CN118539467B - Wind farm primary frequency modulation field level control method and device for multiple types of fans - Google Patents
Wind farm primary frequency modulation field level control method and device for multiple types of fans Download PDFInfo
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Classifications
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- 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
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- 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
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- 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
- H02J2300/28—The renewable source being wind energy
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- 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
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
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Abstract
The application discloses a wind farm primary frequency modulation field level control method and device of a plurality of types of fans in the field of wind power generation, wherein the method comprises the following steps: calculating the frequency deviation of the wind power plant according to the acquired grid-connected point frequency and the rated frequency of the power grid; if the frequency deviation of the wind power plant exceeds the dead zone range, calculating primary frequency modulation adjustment power of the wind power plant, and distributing the primary frequency modulation adjustment power of the wind power plant to each energy pipe platform in an equal margin mode according to the rated capacity of each energy pipe platform; the energy management platform is responded to complete fan control adjustment according to the received primary frequency modulation adjustment power, and the adjusted power of all the energy management platforms in the adjustment period is calculated according to the real-time power of each energy management platform and the initial power when the primary frequency modulation action is triggered; calculating fan adjustment deviation, and if the absolute value of the fan adjustment deviation is larger than the deviation threshold, distributing the fan adjustment deviation to each energy pipe platform according to the power upper limit and the power lower limit of each energy pipe platform by equal margin. The stability of the power grid frequency is enhanced.
Description
Technical Field
The application relates to a wind farm primary frequency modulation field level control method and device for multiple types of fans, and belongs to the technical field of wind power generation.
Background
In recent years, wind energy is used as a clean novel energy source, and is an important research object for developing and utilizing renewable energy sources due to the characteristics of abundant reserves, low cost, and the like. With the rapid development of wind power generation, the proportion of wind power in a power system is continuously improved, however, because the wind power generation has the characteristics of intermittence, randomness and fluctuation, a series of impacts are caused to the safe and stable operation of a power grid, and the problem of influencing the frequency of the power grid is particularly remarkable. Therefore, in order to maintain safe and stable operation of the power system and maintain stable frequency of the power grid system, active power and frequency control potential of the wind power plant are simultaneously excavated, the power grid friendly wind power plant is built, and the wind power plant is required to jointly adjust the power grid frequency as the traditional machine set.
At present, a wind power plant corresponding transformation scheme and a control method adopting a single fan tend to be mature, however, partial wind power plants adopt a plurality of fans to generate electricity, a plurality of energy management platforms are arranged in a station, as the number of energy management platforms is large and the respective controlled capacities are different, the primary frequency modulation regulation performance of the wind power plant is unstable, the frequency of a power grid cannot be effectively stabilized, the function is improved, and the wind power plant is beneficial to supporting the safe and stable operation of the power grid.
Disclosure of Invention
The purpose is as follows: in view of at least one of the technical problems, the application provides a wind farm primary frequency modulation field level control method and device for multiple types of fans, which can improve the capability of wind farm for responding to primary frequency modulation and enhance the stability of power grid frequency.
In order to achieve the above purpose/solve the above technical problems, the present application is realized by adopting the following technical scheme.
In a first aspect, the application provides a wind farm primary frequency modulation field level control method of a multi-type fan, comprising the following steps:
Calculating the frequency deviation of the wind power plant according to the acquired grid-connected point frequency and the rated frequency of the power grid;
If the frequency deviation of the wind power plant exceeds the dead zone range, calculating primary frequency modulation adjustment power of the wind power plant, and distributing the primary frequency modulation adjustment power of the wind power plant to each energy pipe platform in an equal margin mode according to the rated capacity of each energy pipe platform;
the method comprises the steps of responding to the energy management platform to complete fan control adjustment according to received primary frequency modulation adjustment power, and obtaining real-time power of each energy management platform and initial power when primary frequency modulation action is triggered;
Calculating the regulated power of all energy management platforms in the regulation period according to the real-time power of each energy management platform and the initial power when primary frequency modulation action is triggered; calculating fan regulation deviation according to the primary frequency modulation regulation power of the wind power plant and the regulated power of all energy tube platforms,
If the absolute value of the fan adjusting deviation is larger than the deviation threshold, the fan adjusting deviation is unstable in adjustment, and the fan adjusting deviation is distributed to all energy pipe platforms according to the power upper limit and the power lower limit of all energy pipe platforms in an equal margin mode.
In some embodiments, the deviation threshold is 2% of the sum P Total (S) of rated capacities of all energy platforms.
In some embodiments, calculating wind farm primary modulation adjustment power Δp includes:
，
Wherein DeltaP is wind farm primary frequency modulation adjustment power, ƒ L and ƒ H are respectively a low-frequency dead zone and a high-frequency dead zone, ƒ L=50-ƒd,ƒH=50+ƒd,ƒd is primary frequency modulation dead zone, P e is wind farm rated power, ƒ N is grid rated frequency, For the gap adjustment, ƒ is the grid-tie frequency.
In some embodiments, the equally-margin distribution of the wind farm primary frequency modulation adjustment power Δp according to the rated capacity of each energy pipe platform includes:
And obtaining the rated capacity sum of all the energy management platforms according to the rated capacity of each energy management platform, calculating the proportion of the rated capacity of each energy management platform in the rated capacity sum of all the energy management platforms, and issuing the primary frequency modulation adjustment power delta P of the wind power plant to each energy management platform according to the corresponding margin such as the proportion and the like.
In some embodiments, the adjusted power Δp ' of the energy management platform within the adjustment period is calculated from the real-time power of each energy management platform and the initial power when the primary frequency modulation action is triggered;
ΔP'=P Currently, the method is that -P Initial initiation ，
Wherein Δp ' is the regulated power of the manageable platform, P Currently, the method is that is the real-time power of the manageable platform, and P Initial initiation is the initial power of the manageable platform when the primary frequency modulation action is triggered.
In some embodiments, calculating the fan adjustment bias Δp 1 includes:
ΔP1=ΔP-ΔP'，
Wherein DeltaP 1 is fan adjustment deviation, deltaP is wind farm primary frequency modulation adjustment power, and DeltaP ' is energy management platform adjusted power.
In some embodiments, the fan adjustment deviation Δp 1 is distributed to each energy management platform according to the power upper limit and the power lower limit of each energy management platform by equal margin, including:
If the fan adjusting deviation delta P 1 is larger than 0, calculating the power adjustable quantity of each energy management platform according to the real-time power and the power upper limit of each energy management platform; if the fan adjusting deviation delta P 1 is smaller than 0, calculating the power adjustable quantity of each energy management platform according to the real-time power and the power lower limit of each energy management platform;
And obtaining the sum of the power adjustable amounts of all the energy management platforms according to the power adjustable amounts of all the energy management platforms, calculating the proportion of the power adjustable amounts of all the energy management platforms in the sum of the power adjustable amounts of all the energy management platforms, and transmitting the fan adjusting deviation delta P 1 to all the energy management platforms according to the corresponding proportion equal margin.
In some embodiments, the method further comprises:
If the absolute value |DeltaP 1 | of the fan adjusting deviation is smaller than or equal to 2% of the sum of rated capacities P Total (S) of all energy pipe platforms, the fan adjusting deviation is stable, and primary frequency modulation of the wind power plant is completed.
In a second aspect, the present application provides a wind farm primary frequency modulation farm level control device for multiple types of fans, comprising:
A first calculation module for: calculating the frequency deviation of the wind power plant according to the acquired grid-connected point frequency and the rated frequency of the power grid;
A first allocation adjustment module for: if the frequency deviation of the wind power plant exceeds the dead zone range, calculating primary frequency modulation adjustment power of the wind power plant, and distributing the primary frequency modulation adjustment power of the wind power plant to each energy pipe platform in an equal margin mode according to the rated capacity of each energy pipe platform;
An acquisition module for: the method comprises the steps of responding to the energy management platform to complete fan control adjustment according to received primary frequency modulation adjustment power, and obtaining real-time power of each energy management platform and initial power when primary frequency modulation action is triggered;
A second calculation module for: calculating the regulated power of all energy management platforms in the regulation period according to the real-time power of each energy management platform and the initial power when primary frequency modulation action is triggered; calculating fan regulation deviation according to the primary frequency modulation regulation power of the wind power plant and the regulated power of all energy tube platforms,
A second distribution adjustment module for: if the absolute value of the fan adjusting deviation is larger than the deviation threshold, the fan adjusting deviation is unstable in adjustment, and the fan adjusting deviation is distributed to all energy pipe platforms according to the power upper limit and the power lower limit of all energy pipe platforms in an equal margin mode.
In a third aspect, the present application provides a computer readable storage medium having stored thereon a computer program which when executed by a processor performs the steps of the method of the first aspect.
In a fourth aspect, the present application provides a computer device comprising a memory storing a computer program and a processor implementing the steps of the method of the first aspect when the processor executes the computer program.
In a fifth aspect, the present application provides a computer program product comprising a computer program which, when executed by a processor, implements the steps of the method of the first aspect.
Compared with the prior art, the application has the beneficial effects that: the wind farm primary frequency modulation field level control method and device for the multi-type fans provided by the application have the following advantages: the upper and lower adjustable limits of the active power of each type of fan of the wind power plant and the current primary frequency modulation regulating instruction are considered, so that reasonable distribution of power among different fans is realized, the primary frequency modulation response capability of the wind power plant is improved, the stability of the power grid frequency is enhanced, and safe and stable operation of a power grid at a receiving end is ensured.
Drawings
FIG. 1 is a schematic diagram of an application scenario according to an embodiment of the present application;
FIG. 2 is a flow chart of a method for controlling primary frequency modulation field level of a wind farm for multiple types of fans according to an embodiment of the application;
FIG. 3 is a schematic diagram of wind farm primary modulation power calculation according to an embodiment of the present application.
Detailed Description
The following detailed description of the present application is made with reference to the accompanying drawings and specific embodiments, and it is to be understood that the specific features of the embodiments and the embodiments of the present application are detailed description of the technical solutions of the present application, and not limited to the technical solutions of the present application, and that the embodiments and the technical features of the embodiments of the present application may be combined with each other without conflict.
In the description of the present application, the meaning of a number is one or more, the meaning of a number is two or more, and greater than, less than, exceeding, etc. are understood to exclude the present number, and the meaning of a number is understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present application, the descriptions of the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The term "and/or" is merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. The character "/", generally indicates that the front and rear associated objects are an or relationship.
In one possible application scenario, as shown in fig. 1, a wind farm system uses a plurality of fans to generate power, and a plurality of energy management platforms are arranged in the farm, including a primary frequency modulation device, a grid connection point and a plurality of energy management platforms, and the primary frequency modulation device exchanges information with the grid connection point and the plurality of energy management platforms.
Example 1
As shown in fig. 2, the present embodiment provides a wind farm primary frequency modulation field level control method of a multi-type fan, which can be operated on a primary frequency modulation device side, and the method includes:
s1, calculating frequency deviation of a wind power plant according to the acquired grid-connected point frequency and the rated frequency of a power grid;
in some embodiments, in this step S1, a wind farm frequency is calculated The deviation specifically includes:
=ƒ-ƒN，
Wherein ƒ is grid-connected point frequency, and ƒ N is grid rated frequency;
S2, if the frequency deviation of the wind power plant exceeds the dead zone range (ƒ L、ƒH), calculating primary frequency modulation adjustment power delta P of the wind power plant, and distributing the primary frequency modulation adjustment power delta P of the wind power plant to each energy pipe platform according to the rated capacity of each energy pipe platform by equal margin;
in other embodiments, if the wind farm frequency deviation does not exceed the dead band range, then no primary frequency modulation is required and no subsequent steps are performed.
In some embodiments, in this step S2, calculating a wind farm primary modulation adjustment power Δp includes:
，
Wherein DeltaP is wind farm primary frequency modulation adjustment power, ƒ L and ƒ H are respectively a low-frequency dead zone and a high-frequency dead zone, ƒ L=50-ƒd,ƒH=50+ƒd,ƒd is primary frequency modulation dead zone, P e is wind farm rated power, ƒ N is grid rated frequency, For the gap adjustment, ƒ is the grid-tie frequency.
The primary frequency modulation dead zone is an insensitive zone of the primary frequency modulation control system to frequency deviation near the rated frequency;
the difference rate reflects the slope of the primary frequency modulation static characteristic curve and is the ratio of the per unit value of the system frequency variation to the per unit value of the active power variation.
In some embodiments, in the step S2, the distributing and issuing the primary frequency modulation adjustment power Δp of the wind farm according to the rated capacity of each energy pipe platform includes:
And obtaining the rated capacity sum of all the energy management platforms according to the rated capacity of each energy management platform, calculating the proportion of the rated capacity of each energy management platform in the rated capacity sum of all the energy management platforms, and issuing the primary frequency modulation adjustment power delta P of the wind power plant to each energy management platform according to the corresponding margin such as the proportion and the like.
S3, responding to the energy management platform to complete fan control adjustment according to the received primary frequency modulation adjustment power DeltaP Regulation of , and acquiring the real-time power of each energy management platform and the initial power when the primary frequency modulation action is triggered;
In some embodiments, in the step S3, each energy management platform calculates the energy management platform active target value P Target object =P Initial initiation +ΔP Regulation of according to the initial power P Initial initiation and the received primary modulation power Δp Regulation of when the primary modulation action is triggered.
However, in actual adjustment, the active power of the energy pipe platform of each energy pipe platform cannot exceed the upper power limit and the lower power limit of the corresponding energy pipe platform. Therefore, if P Target object is greater than the upper power limit of the energy management platform, the real-time power of the energy management platform is adjusted to the upper power limit of the energy management platform; if P Target object is smaller than the lower power limit of the energy management platform, the real-time power of the energy management platform is adjusted to the lower power limit of the energy management platform.
In some embodiments, in the step S3, the fan adjustment deviation is further calculated by acquiring the real-time power P Currently, the method is that of each energy management platform and the initial power P Initial initiation when the primary frequency modulation action is triggered, for the subsequent calculation of the adjusted power Δp ' of all energy management platforms.
S4, calculating the regulated power delta P ' of all energy management platforms in the regulation period according to the real-time power of each energy management platform and the initial power when primary frequency modulation action is triggered; calculating a fan adjusting deviation delta P 1 according to the primary frequency modulation adjusting power delta P of the wind power plant and the adjusted power delta P ' of all energy pipe platforms;
In some embodiments, in the step S4, the adjusted power Δp ' of the energy management platform in the adjustment period is calculated according to the real-time power of each energy management platform and the initial power when the primary frequency modulation action is triggered;
ΔP'=P Currently, the method is that -P Initial initiation ，
Wherein Δp ' is the regulated power of the manageable platform, P Currently, the method is that is the real-time power of the manageable platform, and P Initial initiation is the initial power of the manageable platform when the primary frequency modulation action is triggered.
In some embodiments, in this step S4, a fan adjustment deviation Δp 1 is calculated from the wind farm primary frequency modulation adjustment power Δp and the adjusted power Δp ' for all energy pipe platforms; comprising the following steps:
ΔP1=ΔP-ΔP'，
Wherein DeltaP 1 is fan adjustment deviation, deltaP is wind farm primary frequency modulation adjustment power, and DeltaP ' is energy management platform adjusted power.
Next, it is determined whether the adjustment is stable based on the fan adjustment deviation Δp 1 and the sum of rated capacities P Total (S) of all the energy management platforms.
And S5, if the absolute value |DeltaP 1 | of the fan adjusting deviation is greater than 2% of the rated capacity sum P Total (S) of all the energy pipe platforms, indicating that the adjustment is unstable, and distributing the fan adjusting deviation DeltaP 1 to each energy pipe platform according to the power upper limit and the power lower limit of each energy pipe platform by equal margin.
In some embodiments, in the step S5, the fan adjustment deviation Δp 1 is distributed to each energy management platform according to the power upper limit and the power lower limit of each energy management platform by equal margin, and specifically includes:
If the fan adjusting deviation delta P 1 is larger than 0, calculating the power adjustable quantity of each energy management platform according to the real-time power and the power upper limit of each energy management platform; if the fan adjusting deviation delta P 1 is smaller than 0, calculating the power adjustable quantity of each energy management platform according to the real-time power and the power lower limit of each energy management platform;
And obtaining the sum of the power adjustable amounts of all the energy management platforms according to the power adjustable amounts of all the energy management platforms, calculating the proportion of the power adjustable amounts of all the energy management platforms in the sum of the power adjustable amounts of all the energy management platforms, and transmitting the fan adjusting deviation delta P 1 to all the energy management platforms according to the corresponding proportion equal margin.
Correspondingly, each energy pipe platform performs fan control adjustment according to the distributed respective fan adjustment deviation amount, and stable adjustment of primary frequency modulation of the wind power plant can be realized.
In other embodiments, if the absolute value of the fan adjustment deviation |Δp 1 | is less than or equal to 2% of the sum of rated capacities P Total (S) of all energy management platforms, indicating stable adjustment, the wind farm primary frequency modulation is completed.
Example 2
Based on the same inventive concept as embodiment 1, this embodiment provides a wind farm primary frequency modulation field level control device of a multi-type fan, including:
A first calculation module for: calculating the frequency deviation of the wind power plant according to the acquired grid-connected point frequency and the rated frequency of the power grid;
A first allocation adjustment module for: if the frequency deviation of the wind power plant exceeds the dead zone range, calculating wind power plant primary frequency modulation adjustment power delta P, and distributing the wind power plant primary frequency modulation adjustment power delta P to each energy pipe platform in an equal margin mode according to the rated capacity of each energy pipe platform;
An acquisition module for: the method comprises the steps of responding to the energy management platform to complete fan control adjustment according to received primary frequency modulation adjustment power, and obtaining real-time power of each energy management platform and initial power when primary frequency modulation action is triggered;
A second calculation module for: calculating the regulated power delta P ' of all energy management platforms in the regulation period according to the real-time power of each energy management platform and the initial power when primary frequency modulation action is triggered; calculating a fan adjustment deviation delta P 1 according to the primary frequency modulation adjustment power delta P of the wind power plant and the adjusted power delta P ' of all energy pipe platforms,
A second distribution adjustment module for: if the absolute value |DeltaP 1 | of the fan adjusting deviation is larger than the set threshold, the fan adjusting deviation DeltaP 1 is distributed to each energy pipe platform according to the power upper limit and the power lower limit of each energy pipe platform by equal margin, wherein the absolute value |DeltaP 1 | of the fan adjusting deviation is not stable in adjustment.
In some embodiments, the set threshold is 2% of the sum P Total (S) of rated capacities of all energy platforms.
Specific functional implementation of each module is related to the method in reference to embodiment 1, and will not be described in detail.
Example 3
Based on the same inventive concept as the other embodiments, this embodiment provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the method described in embodiment 1.
Example 4
Based on the same inventive concept as the other embodiments, this embodiment provides a computer device comprising a memory storing a computer program and a processor implementing the steps of the method of embodiment 1 when the processor executes the computer program.
Example 5
The same inventive concept as the other embodiments is based on the present embodiment a computer program product comprising a computer program which, when executed by a processor, implements the steps of the method described in embodiment 1.
In summary, the embodiment of the application considers the upper and lower adjustable limits of the active power of each type of fan of the wind power plant and the current primary frequency modulation regulating instruction, realizes reasonable distribution of power among different fans, improves the capability of the wind power plant to respond to primary frequency modulation, enhances the stability of the frequency of a power grid, and ensures safe and stable operation of a power grid at a receiving end.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application 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, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program 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 computer program instructions may also be stored in a computer-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 computer-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 computer program 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.
The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are all within the protection of the present application.
Claims (9)
1. A wind farm primary frequency modulation field level control method of a plurality of types of fans is characterized by comprising the following steps:
Calculating the frequency deviation of the wind power plant according to the acquired grid-connected point frequency and the rated frequency of the power grid;
If the frequency deviation of the wind power plant exceeds the dead zone range, calculating primary frequency modulation adjustment power of the wind power plant, and distributing the primary frequency modulation adjustment power of the wind power plant to each energy pipe platform in an equal margin mode according to the rated capacity of each energy pipe platform;
the method comprises the steps of responding to the energy management platform to complete fan control adjustment according to received primary frequency modulation adjustment power, and obtaining real-time power of each energy management platform and initial power when primary frequency modulation action is triggered;
Calculating the regulated power of all energy management platforms in the regulation period according to the real-time power of each energy management platform and the initial power when primary frequency modulation action is triggered; calculating fan regulation deviation according to the primary frequency modulation regulation power of the wind power plant and the regulated power of all energy tube platforms,
If the absolute value of the fan adjusting deviation is larger than the deviation threshold, the fan adjusting deviation is unstable in adjustment, and the fan adjusting deviation is distributed to all energy pipe platforms according to the power upper limit and the power lower limit of all energy pipe platforms in an equal margin mode; the fan adjusting deviation delta P 1 is distributed to each energy pipe platform according to the power upper limit and the power lower limit of each energy pipe platform by equal margin, and the method comprises the following steps:
If the fan adjusting deviation delta P 1 is larger than 0, calculating the power adjustable quantity of each energy management platform according to the real-time power and the power upper limit of each energy management platform; if the fan adjusting deviation delta P 1 is smaller than 0, calculating the power adjustable quantity of each energy management platform according to the real-time power and the power lower limit of each energy management platform;
And obtaining the sum of the power adjustable amounts of all the energy management platforms according to the power adjustable amounts of all the energy management platforms, calculating the proportion of the power adjustable amounts of all the energy management platforms in the sum of the power adjustable amounts of all the energy management platforms, and transmitting the fan adjusting deviation delta P 1 to all the energy management platforms according to the corresponding proportion equal margin.
2. The method of claim 1, wherein calculating wind farm primary modulation adjustment power Δp comprises:
，
Wherein DeltaP is wind farm primary frequency modulation adjustment power, ƒ L and ƒ H are respectively a low-frequency dead zone and a high-frequency dead zone, ƒ L=50-ƒd,ƒH=50+ƒd,ƒd is primary frequency modulation dead zone, P e is wind farm rated power, ƒ N is grid rated frequency, For the gap adjustment, ƒ is the grid-tie frequency.
3. The method of claim 1, wherein equally-marginally distributing wind farm primary modulation power Δp according to rated capacity of each energy management platform, comprising:
And obtaining the rated capacity sum of all the energy management platforms according to the rated capacity of each energy management platform, calculating the proportion of the rated capacity of each energy management platform in the rated capacity sum of all the energy management platforms, and issuing the primary frequency modulation adjustment power delta P of the wind power plant to each energy management platform according to the corresponding margin such as the proportion and the like.
4. The method of claim 1, wherein the adjusted power Δp ' for the energy management platform during the adjustment period is calculated based on the real-time power of each energy management platform and the initial power at the time of the primary frequency modulation action trigger;
ΔP'=P Currently, the method is that -P Initial initiation ，
Wherein Δp ' is the regulated power of the manageable platform, P Currently, the method is that is the real-time power of the manageable platform, and P Initial initiation is the initial power of the manageable platform when the primary frequency modulation action is triggered.
5. The method of claim 1, wherein calculating a fan adjustment bias Δp 1 comprises:
ΔP1=ΔP-ΔP'，
Wherein DeltaP 1 is fan adjustment deviation, deltaP is wind farm primary frequency modulation adjustment power, and DeltaP ' is energy management platform adjusted power.
6. The method as recited in claim 1, further comprising:
If the absolute value |DeltaP 1 | of the fan adjusting deviation is smaller than or equal to 2% of the sum of rated capacities P Total (S) of all energy pipe platforms, the fan adjusting deviation is stable, and primary frequency modulation of the wind power plant is completed.
7. A wind farm primary frequency modulation field level control device for a plurality of types of fans, comprising:
A first calculation module for: calculating the frequency deviation of the wind power plant according to the acquired grid-connected point frequency and the rated frequency of the power grid;
A first allocation adjustment module for: if the frequency deviation of the wind power plant exceeds the dead zone range, calculating primary frequency modulation adjustment power of the wind power plant, and distributing the primary frequency modulation adjustment power of the wind power plant to each energy pipe platform in an equal margin mode according to the rated capacity of each energy pipe platform;
An acquisition module for: the method comprises the steps of responding to the energy management platform to complete fan control adjustment according to received primary frequency modulation adjustment power, and obtaining real-time power of each energy management platform and initial power when primary frequency modulation action is triggered;
A second calculation module for: calculating the regulated power of all energy management platforms in the regulation period according to the real-time power of each energy management platform and the initial power when primary frequency modulation action is triggered; calculating fan regulation deviation according to the primary frequency modulation regulation power of the wind power plant and the regulated power of all energy tube platforms,
A second distribution adjustment module for: if the absolute value of the fan adjusting deviation is larger than the deviation threshold, the fan adjusting deviation is unstable in adjustment, and the fan adjusting deviation is distributed to all energy pipe platforms according to the power upper limit and the power lower limit of all energy pipe platforms in an equal margin mode; the fan adjusting deviation delta P 1 is distributed to each energy pipe platform according to the power upper limit and the power lower limit of each energy pipe platform by equal margin, and the method comprises the following steps:
If the fan adjusting deviation delta P 1 is larger than 0, calculating the power adjustable quantity of each energy management platform according to the real-time power and the power upper limit of each energy management platform; if the fan adjusting deviation delta P 1 is smaller than 0, calculating the power adjustable quantity of each energy management platform according to the real-time power and the power lower limit of each energy management platform;
And obtaining the sum of the power adjustable amounts of all the energy management platforms according to the power adjustable amounts of all the energy management platforms, calculating the proportion of the power adjustable amounts of all the energy management platforms in the sum of the power adjustable amounts of all the energy management platforms, and transmitting the fan adjusting deviation delta P 1 to all the energy management platforms according to the corresponding proportion equal margin.
8. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the method according to any one of claims 1 to 6.
9. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor implements the steps of the method of any of claims 1 to 6 when the computer program is executed.
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| CN116488192A (en) * | 2022-10-20 | 2023-07-25 | 新疆金风科技股份有限公司 | Frequency response control method and device for wind power plant |
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