CN113541160A - Method and device for coordinating and controlling primary frequency modulation system - Google Patents
Method and device for coordinating and controlling primary frequency modulation system Download PDFInfo
- Publication number
- CN113541160A CN113541160A CN202110823921.8A CN202110823921A CN113541160A CN 113541160 A CN113541160 A CN 113541160A CN 202110823921 A CN202110823921 A CN 202110823921A CN 113541160 A CN113541160 A CN 113541160A
- Authority
- CN
- China
- Prior art keywords
- frequency modulation
- modulation system
- primary frequency
- agc
- state
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 78
- 230000002159 abnormal effect Effects 0.000 claims abstract description 26
- 230000009471 action Effects 0.000 claims abstract description 21
- 238000010248 power generation Methods 0.000 claims abstract description 19
- 238000012544 monitoring process Methods 0.000 claims description 22
- 238000004590 computer program Methods 0.000 claims description 21
- 230000008859 change Effects 0.000 claims description 8
- 230000007717 exclusion Effects 0.000 abstract description 10
- 238000010586 diagram Methods 0.000 description 17
- 230000006870 function Effects 0.000 description 14
- 238000004891 communication Methods 0.000 description 10
- 238000012545 processing Methods 0.000 description 9
- 230000003287 optical effect Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/24—Arrangements for preventing or reducing oscillations of power in networks
- H02J3/241—The oscillation concerning frequency
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/002—Flicker reduction, e.g. compensation of flicker introduced by non-linear load
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
- H02J3/48—Controlling the sharing of the in-phase component
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/22—The renewable source being solar energy
- H02J2300/24—The renewable source being solar energy of photovoltaic origin
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention provides a method and a device for coordinating and controlling a primary frequency modulation system. The method is applied to a primary frequency modulation system of a photovoltaic field substation, and comprises the following steps: when the system voltage is normal and the frequency is abnormal, starting frequency modulation action and checking the open-close loop state of the AGC; and after the AGC is determined to be in an open loop state, performing active power adjustment on the power generation unit. According to the method for coordinated control of the primary frequency modulation system, mutual acquisition and supervision are performed through the open-close ring mutual exclusion function between the primary frequency modulation system and the AGC system, so that the primary frequency modulation system and the AGC system can be ensured not to interfere with each other in active power regulation when the frequency of a large power grid abnormally fluctuates, and further make due contribution to a power plant of the large power grid.
Description
Technical Field
The invention relates to the technical field of new energy, in particular to a method and a device for coordinated control of a primary frequency modulation system.
Background
In recent years, with the popularization of new energy technologies, new energy industries such as photovoltaic and the like come up with development opportunities again, and the national power grid actively promotes the establishment and the application of new energy photovoltaic stations. The power grid frequency is one of important indexes for measuring the quality of electric energy, reflects the balance relation between the open and the coincidence of the generating active power and is also one of important indexes for power grid dispatching.
The control of the power grid frequency mainly adopts a primary frequency modulation system or an AGC system. The primary frequency modulation refers to a process that when the new energy power station detects that the frequency of a grid-connected point exceeds a set range, active power output can be rapidly adjusted, and the change of the frequency of a power grid is responded; the primary frequency modulation has the advantages of high action speed, relatively small amplitude and incapability of adjusting the frequency without difference; and AGC is an abbreviation of automatic Generation Control (Auto Generation Control). Sending the command to a relevant power plant or unit according to a control target of a power grid dispatching center, and realizing automatic control of the power of the generator through an automatic control adjusting device of the power plant or unit; it has the action speed slow, can realize there is not poor regulation.
At present, a primary frequency modulation system and an AGC system of a new energy photovoltaic station are different in control target, implementation mode and measurement scale, and have no definite standard, so that the primary frequency modulation and the AGC have uncertainty of a coordination mode in the actual operation debugging process of the station, and the coordination mode of the primary frequency modulation system and the AGC system is thousands of states and cannot be unified due to the subjectivity of a station debugging worker, so that the coordination control coordination mode between the primary frequency modulation system and the AGC system which are the same for each new energy photovoltaic station is thousands of states.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a method and a system for coordinating and controlling a primary frequency modulation system.
In a first aspect, the present invention provides a method for coordinating and controlling a primary frequency modulation system, which is applied to a primary frequency modulation system of a photovoltaic field substation, and includes:
when the system voltage is normal and the frequency is abnormal, starting frequency modulation action and checking the open-close loop state of the AGC;
and after the AGC is determined to be in an open loop state, performing active power adjustment on the power generation unit.
According to the method for coordinating and controlling the primary frequency modulation system provided by the invention, before the AGC is determined to be in the open loop state, the method further comprises the following steps:
and if the AGC is in a closed loop state, sending a remote control open loop instruction to the AGC so that the AGC is updated to be in an open loop state according to the remote control open loop instruction.
According to the method for coordinating and controlling the primary frequency modulation system provided by the invention, after the remote control open-loop instruction is sent to the AGC, the method further comprises the following steps:
and if the AGC state is not monitored to change within the preset time, an alarm is sent.
According to the method for coordinating and controlling the primary frequency modulation system provided by the invention, the method further comprises the following steps:
and if the system voltage is monitored to be abnormal and the frequency is monitored to be abnormal, the frequency modulation action is not started.
In a second aspect, the present invention provides a method for coordinating and controlling a primary frequency modulation system, which is applied to AGC of a photovoltaic field substation, and includes:
monitoring the starting state of a primary frequency modulation system in real time;
and if the primary frequency modulation system is monitored to be in a starting state, updating the primary frequency modulation system to be in an open loop state, so that the active power adjustment is carried out on the power generation unit after the primary frequency modulation system determines that the AGC is in the open loop state.
According to the method for coordinating and controlling the primary frequency modulation system provided by the invention, before the updating is in the open loop state, the method further comprises the following steps:
monitoring the self-opening and closing ring state;
if the closed loop state exists, checking whether a remote control open loop instruction of the primary frequency modulation system is received;
if a remote control open-loop instruction of the primary frequency modulation system is received, executing the remote control open-loop instruction;
and if the remote control open-loop instruction of the primary frequency modulation system is not received, updating the self to be in an open-loop state.
In a third aspect, the present invention further provides a device for coordinating and controlling a primary frequency modulation system, which is applied to a primary frequency modulation system of a photovoltaic farm substation, and the device includes:
the monitoring module is used for monitoring that the system voltage is normal and the frequency is abnormal, starting frequency modulation action and checking the opening and closing ring state of the AGC;
and the adjusting module is used for adjusting the active power of the generating unit after the AGC is determined to be in the open loop state.
In a fourth aspect, the present invention further provides a device for coordinating and controlling a primary frequency modulation system, which is applied to AGC of a photovoltaic field substation, and the device includes:
the monitoring module is used for monitoring the starting state of the primary frequency modulation system in real time;
and the updating module is used for updating the primary frequency modulation system to be in an open loop state if the primary frequency modulation system is monitored to be in the starting state, so that the active power adjustment is carried out on the power generation unit after the primary frequency modulation system determines that the AGC is in the open loop state.
In a fifth aspect, the present invention provides an electronic device, including a memory and a memory storing a computer program, where the processor implements the steps of the method for coordinating and controlling a primary frequency modulation system according to the first aspect, or implements the steps of the method for coordinating and controlling a primary frequency modulation system according to the second aspect when executing the program.
In a sixth aspect, the present invention further provides a processor-readable storage medium, which stores a computer program for causing a processor to execute the steps of the method for primary frequency modulation system coordination control according to the first aspect, or execute the steps of the method for primary frequency modulation system coordination control according to the second aspect.
According to the method and the device for coordinated control of the primary frequency modulation system, mutual acquisition and supervision are performed through the open-close ring mutual exclusion function between the primary frequency modulation system and the AGC system, so that the primary frequency modulation system and the AGC system can be ensured not to interfere with each other in active regulation when the frequency of a large power grid fluctuates abnormally, and further make due contribution to the large power grid for a power plant.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a schematic flow chart of a method for coordinating and controlling a primary frequency modulation system according to the present invention;
FIG. 2 is an overall flow chart of the primary frequency modulation system side in the photovoltaic station primary frequency modulation system and AGC coordination control provided by the invention;
fig. 3 is a second schematic flow chart of a method for coordinating and controlling a primary frequency modulation system according to the present invention;
FIG. 4 is an overall flowchart of the primary frequency modulation system of the photovoltaic station and the AGC side in the AGC coordination control provided by the invention;
FIG. 5 is a schematic diagram of an apparatus for coordinating and controlling a primary frequency modulation system according to the present invention;
FIG. 6 is a second schematic diagram of a device for coordinating and controlling a primary frequency modulation system according to the present invention;
FIG. 7 is a schematic physical structure diagram of an electronic device according to the present invention;
fig. 8 is a second schematic physical structure diagram of an electronic device according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The method and apparatus for coordinating and controlling the primary frequency modulation system of the present invention are described below with reference to fig. 1-8.
Fig. 1 is a schematic flow diagram of a method for coordinating and controlling a primary frequency modulation system provided by the present invention, and as shown in fig. 1, the method for coordinating and controlling a primary frequency modulation system is applied to a primary frequency modulation system of a photovoltaic farm substation, and includes:
and 102, after the AGC is determined to be in an open loop state, performing active power adjustment on a power generation unit.
Specifically, the current new energy source station mainly comprises a photovoltaic station and a wind power station, wherein the photovoltaic substation mainly utilizes a photovoltaic device to realize a power generation and supply function.
Each photovoltaic field station comprises a primary frequency modulation system and an AGC, each photovoltaic field station is a sub-station and is communicated with the AGC of the main station, the AGC of the main station can send corresponding instructions to the AGC of the sub-station, and after the AGC of the sub-station receives the instructions, the sub-station AGC controls the generator set of the sub-station to generate active power according to the corresponding instructions, so that the adjustment of the voltage frequency of the sub-station is realized.
The primary frequency modulation system carries out data acquisition through serial ports modbus, gathers evaluation device frequency, voltage, realizes the purpose of real-time supervision system voltage and frequency, and the primary frequency modulation system also can gather AGC system switching ring state in real time simultaneously. If the situation that the system voltage is normal is monitored, the frequency is abnormal, a primary frequency modulation system is started to adjust the power output function of the power plant, namely, the frequency modulation action of the primary frequency modulation system is started, and meanwhile, the current opening and closing ring state of the AGC system is judged;
after the AGC of the photovoltaic field substation is determined to be in an open-loop state, the fact that the instruction sent by the AGC cannot reach a motor part of the photovoltaic field substation is meant, and the power generation amount of the photovoltaic field substation cannot be adjusted. On the premise, the primary frequency modulation system adjusts the active power of the photovoltaic field substation, and voltage frequency control of the photovoltaic field substation is achieved. Therefore, the mutual exclusion of the primary frequency modulation system and the AGC on the control of the photovoltaic field substation is ensured, namely the photovoltaic field substation is controlled by the primary frequency modulation system within a certain period of time or by the AGC, so that the situation that the coordination of the primary frequency modulation system and the AGC in operation has uncertainty, which causes the inconsistency of the coordination result of each photovoltaic field substation between the same primary frequency modulation system and the AGC, is avoided.
According to the method for coordinated control of the primary frequency modulation system, mutual acquisition and supervision are performed through the open-close ring mutual exclusion function between the primary frequency modulation system and the AGC system, so that the primary frequency modulation system and the AGC system can be ensured not to interfere with each other in active power regulation when the frequency of a large power grid abnormally fluctuates, and further make due contribution to a power plant of the large power grid.
Optionally, before determining that the AGC is in the open loop state, the method further includes:
and if the AGC is in a closed loop state, sending a remote control open loop instruction to the AGC so that the AGC is updated to be in an open loop state according to the remote control open loop instruction.
Specifically, the primary frequency modulation system monitors the open-loop state of the AGC in real time, and if the AGC is monitored to be in the closed-loop state when the primary frequency modulation system is started, that is, the AGC can send a control instruction to the motor part of the photovoltaic field substation at the current time, and the primary frequency modulation system sends a remote control open-loop instruction to the AGC of the photovoltaic field substation, so that the AGC is updated to be in the open-loop state, and the motor part of the photovoltaic field substation cannot receive the control instruction of the AGC. Therefore, the mutual exclusion of the primary frequency modulation system and the AGC on the control of the photovoltaic field substation is realized, namely, the photovoltaic field substation is controlled by the primary frequency modulation system within a certain period of time or by the AGC.
According to the method for coordinated control of the primary frequency modulation system, mutual acquisition and supervision are performed through the open-close ring mutual exclusion function between the primary frequency modulation system and the AGC system, so that the primary frequency modulation system and the AGC system can be ensured not to interfere with each other in active power regulation when the frequency of a large power grid abnormally fluctuates, and further make due contribution to a power plant of the large power grid.
Optionally, after sending the remote open-loop command to the AGC, the method further includes:
and if the AGC state is not monitored to change within the preset time, an alarm is sent.
Specifically, after the primary frequency modulation system sends a remote open-loop instruction to the AGC, whether the state of the AGC is not changed within a preset time period is monitored, that is, whether the AGC is changed from a closed-loop state to an open-loop state, if not, an emergency alarm is popped up, and an operation and maintenance person in the station manually adjusts the AGC to the open-loop state. For example, the preset time period is 500ms, after the primary frequency modulation system sends the remote control open-loop instruction, the AGC state is monitored for 500ms, and if the AGC does not change to the open-loop state, an emergency alarm is popped up, so that operation and maintenance personnel in the station manually adjust the AGC to the open-loop state.
Therefore, the situation that the AGC cannot change from a closed loop state to an open loop state due to the fact that the AGC does not receive the instruction or the AGC cannot normally execute the remote control open loop instruction can be avoided; at the current moment, if a control instruction sent by the master station AGC is available, the control instruction is sent to the motor of the photovoltaic field substation through the AGC of the photovoltaic field substation, and the photovoltaic field substation does not process the control instruction of the primary frequency modulation system, so that the processing result of the motor is influenced finally.
According to the method for coordinated control of the primary frequency modulation system, mutual acquisition and supervision are performed through the open-close ring mutual exclusion function between the primary frequency modulation system and the AGC system, so that the primary frequency modulation system and the AGC system can be ensured not to interfere with each other in active power regulation when the frequency of a large power grid abnormally fluctuates, and further make due contribution to a power plant of the large power grid.
Optionally, the method further includes:
and if the system voltage is monitored to be abnormal and the frequency is monitored to be abnormal, the frequency modulation action is not started.
Specifically, the photovoltaic field substation monitors the voltage and the frequency of the system in real time after the primary frequency modulation system is started, and if the voltage and the frequency of the system are monitored to be abnormal, the primary frequency modulation system does not start frequency modulation action.
According to the method for coordinated control of the primary frequency modulation system, mutual acquisition and supervision are performed through the open-close ring mutual exclusion function between the primary frequency modulation system and the AGC system, so that the primary frequency modulation system and the AGC system can be ensured not to interfere with each other in active power regulation when the frequency of a large power grid abnormally fluctuates, and further make due contribution to a power plant of the large power grid.
FIG. 2 is an overall flow chart of the primary frequency modulation system side in the photovoltaic station primary frequency modulation system and AGC coordination control provided by the invention; as shown in fig. 2, the primary frequency modulation system is started, data acquisition is carried out through a serial port modbus, and the frequency and the voltage of the frequency measurement device are acquired; meanwhile, the open-close loop state of the AGC system is collected in real time, the frequency and voltage fluctuation of the large power grid are monitored in real time, the frequency fluctuation is abnormal under the condition of stable voltage, the AGC system updates the AGC system to be in a frequency modulation state starting state, the primary frequency modulation system is checked to collect the state of an AGC open-close loop in real time, and if the current AGC system is in an open-loop state, the primary frequency modulation system carries out active adjustment to influence the frequency of the large power grid; and if the current AGC system is in a closed loop state, the primary frequency modulation system sends a remote control open loop instruction to the AGC, and simultaneously, the primary frequency modulation system carries out active power regulation.
Under the condition of abnormal voltage, the frequency fluctuates abnormally, and the primary frequency modulation system cannot update the frequency modulation action state.
After the primary frequency modulation system sends a remote control open-loop instruction, the AGC state is monitored for 500ms, if the AGC is not changed into the open-loop state, an emergency alarm is popped up, and operation and maintenance personnel in the station manually adjust the AGC to the open-loop state.
Fig. 3 is a second schematic flow chart of a method for coordinating and controlling a primary frequency modulation system according to the present invention, and as shown in fig. 3, the method for coordinating and controlling a primary frequency modulation system is applied to AGC of a photovoltaic field substation, and includes:
301, monitoring the starting state of a primary frequency modulation system in real time;
step 302, if the primary frequency modulation system is monitored to be in a starting state, updating the primary frequency modulation system to be in an open loop state, so that the active power adjustment is performed on the power generation unit after the primary frequency modulation system determines that the AGC is in an open loop state.
Specifically, the AGC of the photovoltaic field substation is adjusted all day long, the primary frequency modulation is adjusted only when the voltage is normal and the frequency is abnormal, and the AGC monitors the starting state of the primary frequency modulation system in real time.
If the primary frequency modulation system is monitored to be in a starting state, which represents the situation that the system voltage is normal and the frequency is abnormal, the AGC of the photovoltaic field substation needs to be updated to be in an open loop state, so that a control instruction sent by the AGC cannot reach a motor part of the photovoltaic field substation, and the active power of the motor at the current moment is adjusted according to the instruction of the primary frequency modulation system.
According to the method for coordinated control of the primary frequency modulation system, mutual acquisition and supervision are performed through the open-close ring mutual exclusion function between the primary frequency modulation system and the AGC system, so that the primary frequency modulation system and the AGC system can be ensured not to interfere with each other in active power regulation when the frequency of a large power grid abnormally fluctuates, and further make due contribution to a power plant of the large power grid.
Optionally, before the update itself is in the open loop state, the method further includes:
monitoring the self-opening and closing ring state;
if the closed loop state exists, checking whether a remote control open loop instruction of the primary frequency modulation system is received;
if a remote control open-loop instruction of the primary frequency modulation system is received, executing the remote control open-loop instruction;
and if the remote control open-loop instruction of the primary frequency modulation system is not received, updating the self to be in an open-loop state.
Specifically, the AGC of the photovoltaic field substation monitors the opening and closing ring state of the photovoltaic field substation in real time, and if the opening and closing ring state is the closed ring state, the AGC of the photovoltaic field substation is checked whether the AGC of the photovoltaic field substation receives a remote control open-loop instruction sent by a primary frequency modulation system.
If the remote control open-loop instruction is received, the AGC of the photovoltaic field substation executes the remote control open-loop instruction, and the AGC of the photovoltaic field substation is changed into an open-loop state from a closed-loop state; and if the photovoltaic field substation does not receive the AGC update information, the AGC update of the photovoltaic field substation is in an open loop state. Therefore, when the primary frequency modulation system is in a starting state, the AGC is in an open-loop state, namely, the primary frequency modulation system and the AGC of the photovoltaic field substation are kept to be controlled by one of the primary frequency modulation system and the AGC within a certain period of time.
According to the method for coordinated control of the primary frequency modulation system, mutual acquisition and supervision are performed through the open-close ring mutual exclusion function between the primary frequency modulation system and the AGC system, so that the primary frequency modulation system and the AGC system can be ensured not to interfere with each other in active power regulation when the frequency of a large power grid abnormally fluctuates, and further make due contribution to a power plant of the large power grid.
Fig. 4 is an overall flowchart of the primary frequency modulation system of the photovoltaic farm station and the AGC side in the AGC coordinated control, as shown in fig. 4, the AGC and the primary frequency modulation system establish communication through an IEC104 protocol, the AGC collects a frequency modulation action state in the primary frequency modulation system in real time, the start of the frequency modulation action state is monitored, if the primary frequency modulation system is not started, the AGC master station communicates with the AGC substation, the photovoltaic farm substation generates power according to a scheduled instruction, the schedule gives the instruction to the AGC, the AGC splits the schedule instruction to each power generation unit device through some condition checks and some strategy allocations. If the primary frequency modulation system is in a starting state, firstly, the AGC checks the self open-close loop state, the open loop does not perform any processing, the closed loop checks whether the remote control execution of the primary frequency modulation is received, the execution instruction is received, and if the execution instruction is not received, the self open loop state is automatically updated.
Fig. 5 is one schematic diagram of a device for coordinating and controlling a primary frequency modulation system, which is applied to a primary frequency modulation system of a photovoltaic field substation, and the device includes:
the monitoring module 501 is configured to monitor that the system voltage is normal and the frequency is abnormal, start a frequency modulation operation, and check an open/close loop state of the AGC;
an adjusting module 502, configured to perform active power adjustment on the power generating unit after determining that the AGC is in an open loop state.
Optionally, before determining that the AGC is in the open loop state, the apparatus further includes:
a sending module 503, configured to send a remote open-loop instruction to the AGC if the AGC is in a closed-loop state, so that the AGC updates to an open-loop state according to the remote open-loop instruction.
Optionally, after the remote open-loop instruction is sent to the AGC, the sending module 503 is further configured to send an alarm if it is monitored that the state of the AGC does not change within a preset time.
Optionally, the adjusting module 502 is further configured to not start the frequency modulation action if the system voltage is monitored to be abnormal and the frequency is monitored to be abnormal.
Fig. 6 is a second schematic diagram of a device for coordinating and controlling a primary frequency modulation system, which is applied to AGC of a photovoltaic field substation, and the device includes:
the monitoring module 601 is used for monitoring the starting state of the primary frequency modulation system in real time;
an updating module 602, configured to update the primary frequency modulation system to be in an open loop state if it is monitored that the primary frequency modulation system is in a start state, so that the primary frequency modulation system determines that the AGC is in an open loop state, and then performs active power adjustment on the power generation unit.
Optionally, before the update itself is in the open-loop state, the update module 602 is further configured to monitor the open-loop state of the update module itself;
if the closed loop state exists, checking whether a remote control open loop instruction of the primary frequency modulation system is received;
if a remote control open-loop instruction of the primary frequency modulation system is received, executing the remote control open-loop instruction;
and if the remote control open-loop instruction of the primary frequency modulation system is not received, updating the self to be in an open-loop state.
It should be noted that the division of the unit in the present invention is schematic, and is only a logic function division, and there may be another division manner in actual implementation. In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented as a software functional unit and sold or used as a stand-alone product, may be stored in a processor readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
It should be noted that, the apparatus provided in the present invention can implement all the method steps implemented by the method embodiments and achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as the method embodiments in this embodiment are omitted here.
Fig. 7 illustrates a schematic physical structure diagram of an electronic device, and as shown in fig. 7, the electronic device is applied to a primary frequency modulation system of a photovoltaic field substation, and may include: a processor (processor)710, a Communication Interface (Communication Interface)720, a memory (memory)730 and a Communication bus 740, wherein the processor 710, the Communication Interface 720 and the memory 730 communicate with each other via the Communication bus 740. The processor 710 may invoke the computer program in the memory 730 to perform the steps of the method of chirp system coordination control, including, for example:
when the system voltage is normal and the frequency is abnormal, starting frequency modulation action and checking the open-close loop state of the AGC;
and after the AGC is determined to be in an open loop state, performing active power adjustment on the power generation unit.
In addition, the processor 710 may be a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA), or a Complex Programmable Logic Device (CPLD), and may also adopt a multi-core architecture.
The logic instructions in memory 730 may be implemented in software functional units and stored in a computer readable storage medium when sold or used as a stand-alone product. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
Fig. 8 illustrates a schematic physical structure diagram of an electronic device, which is applied to AGC of a photovoltaic field substation, as shown in fig. 8, and may include: a processor (processor)810, a Communication Interface 820, a memory 830 and a Communication bus 840, wherein the processor 810, the Communication Interface 820 and the memory 830 communicate with each other via the Communication bus 840. The processor 810 may invoke the computer program in the memory 830 to perform the steps of the method of tone system coordination control, including, for example:
monitoring the starting state of a primary frequency modulation system in real time;
and if the primary frequency modulation system is monitored to be in a starting state, updating the primary frequency modulation system to be in an open loop state, so that the active power adjustment is carried out on the power generation unit after the primary frequency modulation system determines that the AGC is in the open loop state.
In addition, the processor 810 may be a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA), or a Complex Programmable Logic Device (CPLD), and may also adopt a multi-core architecture.
The logic instructions in memory 830 may be implemented in software functional units and stored in a computer readable storage medium when sold or used as a stand-alone article of manufacture. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In another aspect, the present invention also provides a computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions, which when executed by a computer, enable the computer to perform the steps of the method for coordinated control of a primary frequency modulation system provided by the above methods, the primary frequency modulation system applied to a photovoltaic farm substation, for example, comprising:
when the system voltage is normal and the frequency is abnormal, starting frequency modulation action and checking the open-close loop state of the AGC;
and after the AGC is determined to be in an open loop state, performing active power adjustment on the power generation unit.
In another aspect, the present invention also provides a computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions which, when executed by a computer, enable the computer to perform the steps of the method for coordinated control of a primary frequency modulation system provided by the above methods, applied to an AGC of a photovoltaic farm substation, for example, comprising:
monitoring the starting state of a primary frequency modulation system in real time;
and if the primary frequency modulation system is monitored to be in a starting state, updating the primary frequency modulation system to be in an open loop state, so that the active power adjustment is carried out on the power generation unit after the primary frequency modulation system determines that the AGC is in the open loop state.
In another aspect, the present invention further provides a processor-readable storage medium, where the processor-readable storage medium stores a computer program, where the computer program is configured to enable the processor to execute the method for coordinating and controlling a primary frequency modulation system provided in the foregoing embodiments, and the method is applied to a primary frequency modulation system of a photovoltaic farm substation, and includes:
when the system voltage is normal and the frequency is abnormal, starting frequency modulation action and checking the open-close loop state of the AGC;
and after the AGC is determined to be in an open loop state, performing active power adjustment on the power generation unit.
Optionally, before determining that the AGC is in the open loop state, the method further includes:
and if the AGC is in a closed loop state, sending a remote control open loop instruction to the AGC so that the AGC is updated to be in an open loop state according to the remote control open loop instruction.
Optionally, after sending the remote open-loop command to the AGC, the method further includes:
and if the AGC state is not monitored to change within the preset time, an alarm is sent.
Optionally, the method further includes:
and if the system voltage is monitored to be abnormal and the frequency is monitored to be abnormal, the frequency modulation action is not started.
In another aspect, the present invention further provides a processor-readable storage medium, where the processor-readable storage medium stores a computer program, where the computer program is configured to enable the processor to execute the method for coordinated control of a primary frequency modulation system provided in the foregoing embodiments, and the method is applied to AGC of a photovoltaic farm substation, and includes:
monitoring the starting state of a primary frequency modulation system in real time;
and if the primary frequency modulation system is monitored to be in a starting state, updating the primary frequency modulation system to be in an open loop state, so that the active power adjustment is carried out on the power generation unit after the primary frequency modulation system determines that the AGC is in the open loop state.
Optionally, before the update itself is in the open loop state, the method further includes:
monitoring the self-opening and closing ring state;
if the closed loop state exists, checking whether a remote control open loop instruction of the primary frequency modulation system is received;
if a remote control open-loop instruction of the primary frequency modulation system is received, executing the remote control open-loop instruction;
and if the remote control open-loop instruction of the primary frequency modulation system is not received, updating the self to be in an open-loop state.
The processor-readable storage medium can be any available medium or data storage device that can be accessed by a processor, including, but not limited to, magnetic memory (e.g., floppy disks, hard disks, magnetic tape, magneto-optical disks (MOs), etc.), optical memory (e.g., CDs, DVDs, BDs, HVDs, etc.), and semiconductor memory (e.g., ROMs, EPROMs, EEPROMs, non-volatile memory (NAND FLASH), Solid State Disks (SSDs)), etc.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer-executable instructions. These computer-executable instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the processor-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These processor-executable instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A method for coordinating and controlling a primary frequency modulation system is characterized in that the primary frequency modulation system applied to a photovoltaic field substation comprises the following steps:
when the system voltage is normal and the frequency is abnormal, starting frequency modulation action and checking the open-close loop state of the AGC;
and after the AGC is determined to be in an open loop state, performing active power adjustment on the power generation unit.
2. The method of claim 1, wherein prior to determining that the AGC is in an open loop state, the method further comprises:
and if the AGC is in a closed loop state, sending a remote control open loop instruction to the AGC so that the AGC is updated to be in an open loop state according to the remote control open loop instruction.
3. The method of coordinated control of a primary frequency modulation system according to claim 2, wherein after said sending a remote open loop command to said AGC, said method further comprises:
and if the AGC state is not monitored to change within the preset time, an alarm is sent.
4. The method of coordinated control of a primary frequency modulation system according to claim 1, further comprising:
and if the system voltage is monitored to be abnormal and the frequency is monitored to be abnormal, the frequency modulation action is not started.
5. A method for coordinating and controlling a primary frequency modulation system is characterized in that AGC applied to a photovoltaic field substation comprises the following steps:
monitoring the starting state of a primary frequency modulation system in real time;
and if the primary frequency modulation system is monitored to be in a starting state, updating the primary frequency modulation system to be in an open loop state, so that the active power adjustment is carried out on the power generation unit after the primary frequency modulation system determines that the AGC is in the open loop state.
6. A method of co-ordination control of a primary frequency modulation system according to claim 5, wherein before said updating itself to an open loop state, said method further comprises:
monitoring the self-opening and closing ring state;
if the closed loop state exists, checking whether a remote control open loop instruction of the primary frequency modulation system is received;
if a remote control open-loop instruction of the primary frequency modulation system is received, executing the remote control open-loop instruction;
and if the remote control open-loop instruction of the primary frequency modulation system is not received, updating the self to be in an open-loop state.
7. A device for coordinating and controlling a primary frequency modulation system is characterized in that the device is applied to the primary frequency modulation system of a photovoltaic field substation, and the device comprises:
the monitoring module is used for monitoring that the system voltage is normal and the frequency is abnormal, starting frequency modulation action and checking the opening and closing ring state of the AGC;
and the adjusting module is used for adjusting the active power of the generating unit after the AGC is determined to be in the open loop state.
8. The device for the coordinated control of the primary frequency modulation system is applied to AGC of a photovoltaic field substation, and comprises:
the monitoring module is used for monitoring the starting state of the primary frequency modulation system in real time;
and the updating module is used for updating the primary frequency modulation system to be in an open loop state if the primary frequency modulation system is monitored to be in the starting state, so that the active power adjustment is carried out on the power generation unit after the primary frequency modulation system determines that the AGC is in the open loop state.
9. An electronic device comprising a processor and a memory storing a computer program, wherein the processor when executing the computer program performs the steps of the method for coordinated control of a primary frequency modulation system according to any one of claims 1 to 4, or performs the steps of the method for coordinated control of a primary frequency modulation system according to any one of claims 5 to 6.
10. A non-transitory computer readable storage medium, having a computer program stored thereon, wherein the computer program, when being executed by a processor, implements the steps of the method for coordinated control of a primary frequency modulation system according to any one of claims 1 to 4, or implements the steps of the method for coordinated control of a primary frequency modulation system according to any one of claims 5 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110823921.8A CN113541160A (en) | 2021-07-21 | 2021-07-21 | Method and device for coordinating and controlling primary frequency modulation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110823921.8A CN113541160A (en) | 2021-07-21 | 2021-07-21 | Method and device for coordinating and controlling primary frequency modulation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113541160A true CN113541160A (en) | 2021-10-22 |
Family
ID=78129127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110823921.8A Pending CN113541160A (en) | 2021-07-21 | 2021-07-21 | Method and device for coordinating and controlling primary frequency modulation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113541160A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109494762A (en) * | 2018-10-15 | 2019-03-19 | 国网陕西省电力公司电力科学研究院 | Photovoltaic plant primary frequency modulation control method and system based on more main website coordinated controls |
| US20200169219A1 (en) * | 2017-12-31 | 2020-05-28 | Beijing Goldwind Science & Creation Windpower Equipment Co., Ltd. | Photovoltaic power plant and primary frequency modulation control method therefor |
| CN112311009A (en) * | 2020-10-28 | 2021-02-02 | 国网经济技术研究院有限公司 | Fusion power station and multi-station fusion participation power grid coordination control method and system |
| CN112366731A (en) * | 2020-11-05 | 2021-02-12 | 国能日新科技股份有限公司 | Power grid frequency adjusting method, system, server and storage medium |
| CN112583030A (en) * | 2020-12-07 | 2021-03-30 | 北京奥德威特电力科技股份有限公司 | Wind-solar-storage primary frequency modulation coordination control system and method based on edge calculation |
| CN112865135A (en) * | 2021-01-15 | 2021-05-28 | 国网江苏省电力有限公司 | Primary frequency modulation priority control method for new energy station |
| CN112928778A (en) * | 2021-01-27 | 2021-06-08 | 许继集团有限公司 | Power and frequency regulation control method for photovoltaic energy storage power station |
-
2021
- 2021-07-21 CN CN202110823921.8A patent/CN113541160A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20200169219A1 (en) * | 2017-12-31 | 2020-05-28 | Beijing Goldwind Science & Creation Windpower Equipment Co., Ltd. | Photovoltaic power plant and primary frequency modulation control method therefor |
| CN109494762A (en) * | 2018-10-15 | 2019-03-19 | 国网陕西省电力公司电力科学研究院 | Photovoltaic plant primary frequency modulation control method and system based on more main website coordinated controls |
| CN112311009A (en) * | 2020-10-28 | 2021-02-02 | 国网经济技术研究院有限公司 | Fusion power station and multi-station fusion participation power grid coordination control method and system |
| CN112366731A (en) * | 2020-11-05 | 2021-02-12 | 国能日新科技股份有限公司 | Power grid frequency adjusting method, system, server and storage medium |
| CN112583030A (en) * | 2020-12-07 | 2021-03-30 | 北京奥德威特电力科技股份有限公司 | Wind-solar-storage primary frequency modulation coordination control system and method based on edge calculation |
| CN112865135A (en) * | 2021-01-15 | 2021-05-28 | 国网江苏省电力有限公司 | Primary frequency modulation priority control method for new energy station |
| CN112928778A (en) * | 2021-01-27 | 2021-06-08 | 许继集团有限公司 | Power and frequency regulation control method for photovoltaic energy storage power station |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8275486B2 (en) | Electric power system automation using time coordinated instructions | |
| US10642241B2 (en) | Systems, methods and apparatus for improved generation control of microgrid energy systems | |
| CN113517706A (en) | Primary frequency modulation coordination control method, system, equipment and storage medium for wind storage system | |
| US20120185838A1 (en) | Method and system for secure firmware updates in programmable devices | |
| CN1997824A (en) | Active power regulating system of a wind farm | |
| WO2014106095A1 (en) | Responding to local grid events and distributed grid events | |
| EA021216B1 (en) | System and method for regulation of a regenerative energy generation installation | |
| CN114158115B (en) | Power supply management method, device and system of wireless test equipment | |
| CN113541160A (en) | Method and device for coordinating and controlling primary frequency modulation system | |
| CN114763782A (en) | Method for controlling compliance of renewable energy farm with grid-oriented specifications | |
| CN110994696A (en) | Power grid voltage control method and system for new energy high-permeability area | |
| CN108539800A (en) | AGC closed loop test method and device | |
| CN113554243A (en) | Remote scheduling method and device for power plant, computer equipment and storage medium | |
| CN110729715A (en) | Power distribution network line fault recovery method and device | |
| CN104767213A (en) | Energy storage system output overshoot suppression control method and device | |
| US11605946B2 (en) | Autonomous restoration of power systems after natural disasters | |
| Temiz et al. | An AGC Algorithm for Multi-Area Power Systems in Network Splitting Conditions | |
| Nascimento et al. | Dispatchable power source control for battery bank charging through a bidirectional grid forming converter in isolated microgrid | |
| US11411403B2 (en) | Controlling power distribution at deadband states | |
| CN110704406B (en) | Energy data processing method, device and equipment | |
| CN117522130A (en) | Equipment control strategy presetting method and device based on risk assessment | |
| CN116436073A (en) | Parameter configuration method and system for preventing continuous low voltage ride through of distributed new energy | |
| JP2023108515A (en) | Power system and control method | |
| CN115765036A (en) | Wind, light, firewood and storage integrated energy guarantee and energy management system | |
| CN118465581A (en) | Energy storage power station SOC calibration method, system, electronic equipment and readable medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211022 |