CN103117564B - Coordinated control system and method for wind-solar hybrid power generation - Google Patents
Coordinated control system and method for wind-solar hybrid power generation Download PDFInfo
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Abstract
The invention provides coordinated control system and method for wind-solar hybrid power generation. The system comprises a system master station and a system slave station. The system master station is in communication connection with the system slave station through an industrial Ethernet. The system is in a distributed structure, the system master station is connected with the system slave station through the industrial Ethernet, and accordingly fast transmission of mass data is achieved. Information interaction with a monitoring center is achieved by GPRS (general packet radio service) or CDMA (code division multiple access) wireless communication, so that the problems such that wire communication of remote base stations under the limitation of geographical environments of islands, deserts and the like fails, or signal jamming possibly caused by long-range communication line connection can be avoided. Development is focused on effective recharge and discharge and normal operation in storage batteries, so that reliable power supply is guaranteed for remote communication base stations, and the service lives of the storage batteries are prolonged.
Description
Technical field
The invention belongs to power automation field, be specifically related to a kind of wind light mutual complementing power generation coordinated control system and method.
Background technology
The lasting raising of national life level due to China, the popularity rate of mobile phone is more and more higher, coverage rate for movable signal also requires more and more wider, the construction of communication base station from urban district, rural area progressively to remote island, high mountain, desert cover, these outlying communication base stations cannot access civil power owing to being subject to the constraint of geographical environment.The wind light mutual complementing power station that utilizes wind generating technology and photovoltaic power generation technology to form, for outlying communication base station provides part or all of electric energy, thereby makes up because civil power cannot access the supply of electric power deficiency causing.The communication equipment great majority of base station need DC power supply, and in wind light mutual complementing power station, what photovoltaic solar sent is direct current, can directly or in the mode of connecting provide the DC power supply that meets these equipment requirements.
For in base station, other needs the equipment of Alternating Current Power Supply, the alternating current that can send by wind power generation, diesel generation, or increase by solar power generation the AC power that DC/AC inverter meets these equipment requirements.Along with the aggravation of market competition, mobile communication subscriber is more and more higher to the requirement of network quality, because power failure causes the phenomenon of base station service quit, also must avoid as far as possible.For ensureing the reliable power supply of remote base station, wind light mutual complementing power station also needs to configure the storage battery of larger capacity.Because remote base station is all unattended operation, and remote, so need to configure full automatic coordinated control system and perfect coordination control strategy for wind and solar hybrid generating system.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the invention provides a kind of wind light mutual complementing power generation coordinated control system and method, adopt distributed frame, between system main website and system slave station, adopted Industrial Ethernet to connect, can realize the quick transmission of mass data; Adopt GPRS or cdma wireless communication mode and Surveillance center to realize the mutual of information, the geographical environment restrictions such as island, desert can be avoided being located in due to remote base station and wire communication cannot be carried out, or because the connection of long distance connects the problems such as signal interference that may cause.
In order to realize foregoing invention object, the present invention takes following technical scheme:
A kind of wind light mutual complementing power generation coordinated control system is provided, and described wind light mutual complementing power generation coordinated control system comprises system main website and system slave station, and described system main website and system slave station communicate connection by Industrial Ethernet.
Described system main website comprises master controller and liquid crystal display, and described master controller adopts PC or built-in PC.
Described master controller adopts Industrial Ethernet network interface card and described terminal on the spot to communicate, and adopts GPRS or CDMA and Surveillance center to carry out radio communication.
Described system slave station comprises terminal on the spot, and described terminal on the spot comprises photovoltaic generation terminal, wind power generation terminal, diesel generation terminal, storage battery terminal, environmental monitoring terminal and load terminal; Described load terminal comprises important communication load terminal, secondary communication load terminal and AC load terminal.
Described important communication load terminal comprises transceiver, transfer management machine, transmitting extended equipment and satellite equipment; Described secondary communication load terminal comprises optical transmitter and receiver, data service unit, antenna and launching tower.
Described photovoltaic generation terminal, wind power generation terminal, diesel generation terminal, storage battery terminal, environmental monitoring terminal and load terminal all adopt Industrial Ethernet chip and application layer cpu chip, described Industrial Ethernet chip and described Industrial Ethernet are carried out exchanges data, and described application layer cpu chip carries out AD sampling, data calculating and processing, switching value input signal is processed and control relay output is processed.
Wind and solar hybrid generating system comprises wind light mutual complementing power generation coordinated control system, photovoltaic power generation equipment, wind-driven generator, diesel engine generator and storage battery.
A kind of wind light mutual complementing power generation control method for coordinating is provided simultaneously, said method comprising the steps of:
Step 1: gather environmental information and dynamic Information:
Step 2: calculate photovoltaic power generation equipment power output P
pV, wind driven generator output power P
wT, diesel engine generator power output P
dEwith load capacity P
l, and computational load capacity P
lwith power supply gross power P
sdifference P
net, P
net=P
l-P
s, wherein: P
s=P
pV+ P
wT+ P
dE;
Step 3: judgement P
netwhether be greater than 0, if perform step 4, perform step 6 if not;
Step 4: the state-of-charge SOC that judges current storage battery
twhether be more than or equal to the state-of-charge lower limit SOC of storage battery
minif, perform step 5, reduce if not load and to after charge in batteries, perform step 8;
Step 5: can judgement storage battery supply with P completely
netif supply with P by storage battery
netrear execution step 8, performs step 8 after reducing if not load terminal;
Step 6: the state-of-charge SOC that judges current storage battery
twhether be less than or equal to the state-of-charge upper limit SOC of storage battery
maxif, perform step 7, increase if not after load or minimizing diesel engine generator are exerted oneself and perform step 8;
Step 7: to charge in batteries, and judge whether to receive completely | P
net|, if | P
net| all, for to after charge in batteries, perform step 8; If not first to charge in batteries, then after increasing load or reduce diesel engine generator and exerting oneself, execution step 8;
Step 8: calculate next state-of-charge SOC of storage battery constantly
t+1.
In described step 1, by environmental monitoring terminal, gather environmental information, described environmental information comprises ambient temperature, solar irradiance and wind speed, and described dynamic Information comprises that diesel engine generator is exerted oneself, load current and load voltage; By diesel engine generator, gather diesel engine generator and exert oneself, and gather load current and load voltage by load terminal.
In described step 2, according to described ambient temperature and solar irradiance, calculate photovoltaic power generation equipment power output P
pV, according to wind speed, calculate wind driven generator output power P
wT, according to diesel engine generator output calculation diesel engine generator power output P
dE, and according to load current and load voltage computational load capacity P
l.
Compared with prior art, beneficial effect of the present invention is:
1. adopted distributed frame, master controller and adopt on the spot Industrial Ethernet to connect between terminal, can realize the quick transmission of mass data;
2. adopt GPRS or cdma wireless communication mode and Surveillance center to realize the mutual of information, the geographical environment restrictions such as island, desert can be avoided being located in due to remote base station and wire communication cannot be carried out, or because the connection of long distance connects the problems such as signal interference that may cause;
3. around effectively discharging and recharging and normally moving of storage battery, carry out, both ensured the reliable power supply of outlying communication base station, extended again the useful life of storage battery;
4. keeper can check by the mode of SMS or multimedia message the real-time running state of coordinated control system.
Accompanying drawing explanation
Fig. 1 is wind light mutual complementing power generation coordinated control system structural representation in the utility model embodiment;
Fig. 2 is wind and solar hybrid generating system structural representation in the utility model embodiment;
Fig. 3 is wind light mutual complementing power generation control method for coordinating flow chart in the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
As Fig. 1, a kind of wind light mutual complementing power generation coordinated control system is provided, described wind light mutual complementing power generation coordinated control system comprises system main website and system slave station, described system main website and system slave station communicate connection by Industrial Ethernet.
Described system main website comprises master controller and liquid crystal display, and described master controller adopts PC or built-in PC.
Described master controller adopts Industrial Ethernet network interface card (Network Interface Card, NIC) and described terminal on the spot to communicate, and adopts GPRS or CDMA and Surveillance center to carry out radio communication.
Described system slave station comprises terminal on the spot, and described terminal on the spot comprises photovoltaic generation terminal, wind power generation terminal, diesel generation terminal, storage battery terminal, environmental monitoring terminal and load terminal; Described load terminal comprises important communication load terminal, secondary communication load terminal and AC load terminal.
Described important communication load terminal comprises transceiver, transfer management machine, transmitting extended equipment and satellite equipment; Described secondary communication load terminal comprises optical transmitter and receiver, data service unit, antenna and launching tower.
Described photovoltaic generation terminal, wind power generation terminal, diesel generation terminal, storage battery terminal, environmental monitoring terminal and load terminal all adopt Industrial Ethernet chip and application layer cpu chip, described Industrial Ethernet chip and described Industrial Ethernet are carried out exchanges data, and described application layer cpu chip carries out AD sampling, data calculating and processing, switching value input signal is processed and control relay output is processed.
A little less than strong, winter in solar irradiation summer, and wind-force summer is little, winter is large; When weather is good, solar irradiation is strong and wind-force is little, and during bad weather, solar irradiation is weak and wind-force is large; Daytime, solar irradiation strong wind was little, and the large solar irradiation of wind-force in evening does not have, so can utilize the substantially contrary natural characteristic of both variation tendencies of wind and solar energy, maximize favourable factors and minimize unfavourable ones, cooperatively interact, given play to the maximum utility of renewable resource, wind light mutual complementing technology that Here it is.
The wind and solar hybrid generating system of a set of independent operating comprises wind light mutual complementing power generation coordinated control system, photovoltaic power generation equipment, wind-driven generator, diesel engine generator and storage battery.
Wind and solar hybrid generating system is comprised of power generation, storage, consumption link three parts.Wind power generation and solar power generation partly belong to power generation link, respectively by thering is probabilistic wind energy, solar energy is converted into the stable energy; Imbalance for the energy supply avoiding to greatest extent causing due to external factor such as weather, environment and between consuming, adopts and in system, accesses the storage link that storage battery is born energy, thereby realize adjusting and equilibrium between energy supply and demand; Energy consumes link and refers to the various electric loadings of using, and is divided into DC load and AC load two classes.The DC load that operating voltage is mated with DC bus-bar voltage is connecting system directly, and the unmatched DC load of operating voltage and DC bus-bar voltage is by connecting system after DC converter; When being connected into circuit, AC load need to be equipped with inverter.In addition, in order to strengthen continuity and the stability of system power supply, can consider to introduce standby diesel engine generator, the apolegamy of standby diesel engine generator is to a great extent or according to resources supplIes is determined local wind-force, sunshine.The alternating current that wind-driven generator and diesel engine generator send, after the rectification of AC/DC inverter, become direct current access DC bus, the direct current that photovoltaic generation sends also accesses DC bus be converted to the direct current of relevant voltage grade by DC/DC inverter after, under the control of coordinated control system, DC bus charges to storage battery by DC/DC inverter.The function of coordinated control system comprises controls wind-driven generator, diesel engine generator and the Charge Management of solar energy power generating to storage battery; Realization is the electric discharge management to load to storage battery; The data acquisition function during operation of photovoltaic complementary power generation system; And with the communication function at remote monitoring center.
As Fig. 3, wind and solar hybrid generating system, as the autonomous power supply system of outlying communication base station, need to provide continual electric power energy, therefore very strong for the dependence of storage battery, and storage battery is to guarantee that wind and solar hybrid generating system is stablized and the critical component of continuous service.Randomness, fluctuation feature due to wind light generation, if discharging and recharging effectively of storage battery do not managed, may cause the phenomenons such as overcharge of a battery or overdischarge, this directly affects the service life cycle of storage battery, increase wind and solar hybrid generating system operation expense, reduce system operation reliability.So, guarantee the normal of accumulator charging/discharging process, discharging and recharging effectively of storage battery controlled, key particularly just seems; Meanwhile, the initial investment of storage battery also accounts for a very large part in wind and solar hybrid generating system, and approximately 15% ~ 20%, and storage battery is due to own characteristic and charge-discharge characteristic, is the most flimsy part in whole system.For these reasons, just the coordination control strategy of wind and solar hybrid generating system to be carried out around effectively discharging and recharging and normally moving of storage battery.
The state-of-charge SOC=storage battery remaining ampere-hour capacity/specified ampere-hour capacity of storage battery
SOC
tthe state-of-charge of current storage battery, SOC
t+1next state-of-charge of storage battery constantly, SOC
minthe state-of-charge lower limit of storage battery, SOC
maxbe the state-of-charge upper limit of storage battery, storage battery must meet memory capacity constraints constantly, that is:
SOC
min?SOC
t≤SOC
max
While also having dump power after honourable power meets load, to charge in batteries, and when honourable underpower, first by battery discharging supply load, like this, in the situation that meeting loading demand, utilize energy storage device by unnecessary power storage, and when at wind speed, lower or intensity of illumination is weak again by the energy storage device supply load that discharges, thereby can improve renewable energy utilization efficiency, simultaneously, owing to all storage battery charge state being detected before each decision-making, prevent overcharge of a battery or overdischarge, realized the effective management to storage battery.
A kind of wind light mutual complementing power generation control method for coordinating is provided simultaneously, said method comprising the steps of:
Step 1: gather environmental information and dynamic Information:
Step 2: calculate photovoltaic power generation equipment power output P
pV, wind driven generator output power P
wT, diesel engine generator power output P
dEwith load capacity P
l, and computational load capacity P
lwith power supply gross power P
sdifference P
net, P
net=P
l-P
s, wherein: P
s=P
pV+ P
wT+ P
dE;
According to Science Press in 2008, publish, by Zhao Zhengming, Liu Jianzheng, the design and construction > > of the < < solar photovoltaic generation system that the chief editor's such as Sun Xiaoying and Yuan Liqiang < < solar energy power generating and application > > thereof and Science Press published, edited by solar photoelectric association [day] in 2004 calculates photovoltaic power generation equipment power output P
pV;
According to the < < wind power generation > > that China Electric Power Publishing House published in 2003, warm by Wang Cheng and Zhang Yuan edits, calculate wind driven generator output power P
wT.
Step 3: judgement P
netwhether be greater than 0, if perform step 4, perform step 6 if not;
Step 4: the state-of-charge SOC that judges current storage battery
twhether be more than or equal to the state-of-charge lower limit SOC of storage battery
minif, perform step 5, reduce if not load and to after charge in batteries, perform step 8;
Step 5: can judgement storage battery supply with P completely
netif supply with P by storage battery
netrear execution step 8, performs step 8 after reducing if not load terminal;
Step 6: the state-of-charge SOC that judges current storage battery
twhether be less than or equal to the state-of-charge upper limit SOC of storage battery
maxif, perform step 7, increase if not after load or minimizing diesel engine generator are exerted oneself and perform step 8;
Step 7: to charge in batteries, and judge whether to receive completely | P
net|, if | P
net| all, for to after charge in batteries, perform step 8; If not first to charge in batteries, then after increasing load or reduce diesel engine generator and exerting oneself, execution step 8;
Step 8: calculate next state-of-charge SOC of storage battery constantly
t+1.
In described step 1, by environmental monitoring terminal, gather environmental information, described environmental information comprises ambient temperature, solar irradiance and wind speed, and described dynamic Information comprises that diesel engine generator is exerted oneself, load current and load voltage; By diesel engine generator, gather diesel engine generator and exert oneself, and gather load current and load voltage by load terminal.
In described step 2, according to described ambient temperature and solar irradiance, calculate photovoltaic power generation equipment power output P
pV, according to wind speed, calculate wind driven generator output power P
wT, according to diesel engine generator output calculation diesel engine generator power output P
dE, and according to load current and load voltage computational load capacity P
l.
The method is carried out around effectively discharging and recharging and normally moving of storage battery, while also having dump power after honourable power meets load, to charge in batteries, and when honourable underpower, first by battery discharging supply load, like this, in the situation that meeting loading demand, utilize energy storage device by unnecessary power storage, and when at wind speed, lower or intensity of illumination is weak again by the energy storage device supply load that discharges.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit, although the present invention is had been described in detail with reference to above-described embodiment, those of ordinary skill in the field are to be understood that: still can modify or be equal to replacement the specific embodiment of the present invention, and do not depart from any modification of spirit and scope of the invention or be equal to replacement, it all should be encompassed in the middle of claim scope of the present invention.
Claims (10)
1. a wind light mutual complementing power generation control method for coordinating, is characterized in that: said method comprising the steps of:
Step 1: gather environmental information and dynamic Information;
Step 2: calculate photovoltaic power generation equipment power output P
pV, wind driven generator output power P
wT, diesel engine generator power output P
dEwith load capacity P
l, and computational load capacity P
lwith power supply gross power P
sdifference P
net, P
net=P
l?P
s, wherein: P
s=P
pV+ P
wT+ P
dE;
Step 3: judgement P
netwhether be greater than 0, if perform step 4, perform step 6 if not;
Step 4: the state-of-charge SOC that judges current storage battery
twhether be more than or equal to the state-of-charge lower limit SOC of storage battery
minif, perform step 5, reduce if not load and to after charge in batteries, perform step 8;
Step 5: can judgement storage battery supply with P completely
netif supply with P by storage battery
netrear execution step 8, performs step 8 after reducing if not load terminal;
Step 6: the state-of-charge SOC that judges current storage battery
twhether be less than or equal to the state-of-charge upper limit SOC of storage battery
maxif, perform step 7, increase if not after load or minimizing diesel engine generator are exerted oneself and perform step 8;
Step 7: to charge in batteries, and judge whether to receive completely | P
net|, if | P
net| all, for to after charge in batteries, perform step 8; If not first to charge in batteries, then after increasing load or reduce diesel engine generator and exerting oneself, execution step 8;
Step 8: calculate next state-of-charge SOC of storage battery constantly
t+1.
2. wind light mutual complementing power generation control method for coordinating according to claim 1, it is characterized in that: in described step 1, by environmental monitoring terminal, gather environmental information, described environmental information comprises ambient temperature, solar irradiance and wind speed, and described dynamic Information comprises that diesel engine generator is exerted oneself, load current and load voltage; By diesel engine generator, gather diesel engine generator and exert oneself, and gather load current and load voltage by load terminal.
3. wind light mutual complementing power generation control method for coordinating according to claim 1, is characterized in that: in described step 2, according to described ambient temperature and solar irradiance, calculate photovoltaic power generation equipment power output P
pV, according to wind speed, calculate wind driven generator output power P
wT, according to diesel engine generator output calculation diesel engine generator power output P
dE, and according to load current and load voltage computational load capacity P
l.
4. wind light mutual complementing power generation control method for coordinating according to claim 1, it is characterized in that: described method adopts wind light mutual complementing power generation coordinated control system to realize, described wind light mutual complementing power generation coordinated control system comprises system main website and system slave station, and described system main website and system slave station communicate connection by Industrial Ethernet.
5. wind light mutual complementing power generation control method for coordinating according to claim 4, is characterized in that: described system main website comprises master controller and liquid crystal display, and described master controller adopts PC or built-in PC.
6. wind light mutual complementing power generation control method for coordinating according to claim 5, is characterized in that: described master controller employing Industrial Ethernet network interface card and on the spot terminal communicate, and adopt GPRS or CDMA and Surveillance center to carry out radio communication.
7. wind light mutual complementing power generation control method for coordinating according to claim 4, it is characterized in that: described system slave station comprises terminal on the spot, described terminal on the spot comprises photovoltaic generation terminal, wind power generation terminal, diesel generation terminal, storage battery terminal, environmental monitoring terminal and load terminal; Described load terminal comprises important communication load terminal, secondary communication load terminal and AC load terminal.
8. wind light mutual complementing power generation control method for coordinating according to claim 7, is characterized in that: described important communication load terminal comprises transceiver, transfer management machine, transmitting extended equipment and satellite equipment; Described secondary communication load terminal comprises optical transmitter and receiver, data service unit, antenna and launching tower.
9. wind light mutual complementing power generation control method for coordinating according to claim 7, it is characterized in that: described photovoltaic generation terminal, wind power generation terminal, diesel generation terminal, storage battery terminal, environmental monitoring terminal and load terminal all adopt Industrial Ethernet chip and application layer cpu chip, described Industrial Ethernet chip and described Industrial Ethernet are carried out exchanges data, and described application layer cpu chip carries out AD sampling, data calculating and processing, switching value input signal is processed and control relay output is processed.
10. wind light mutual complementing power generation control method for coordinating according to claim 4, is characterized in that: wind and solar hybrid generating system comprises wind light mutual complementing power generation coordinated control system, photovoltaic power generation equipment, wind-driven generator, diesel engine generator and storage battery.
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| CN104391484A (en) * | 2013-08-19 | 2015-03-04 | 广东西电动力科技股份有限公司 | Embedded multi-place remote monitoring intelligent power station |
| CN103499957A (en) * | 2013-09-26 | 2014-01-08 | 国家电网公司 | Multi-agent-based management control system for wind-solar complementary power generation system |
| CN103527416A (en) * | 2013-10-23 | 2014-01-22 | 国家电网公司 | User wind and photovoltaic complementary power generation system suitable for sea island micro-grid power supply mode |
| CN103956833A (en) * | 2014-05-20 | 2014-07-30 | 国家电网公司 | Wind and light energy storage power station battery monitoring system and method |
| CN105470989B (en) * | 2016-01-05 | 2018-02-27 | 南通大学 | Modularized wind power generation unit multiple agent EMS and method |
| CN109272258B (en) * | 2018-11-08 | 2020-09-04 | 国网山东省电力公司电力科学研究院 | Regional wind and solar power generation resource evaluation method based on K-means clustering |
| CN210608672U (en) * | 2019-09-17 | 2020-05-22 | 深圳市誉娇诚科技有限公司 | Wind-solar-electricity-storage communication base station standby power supply system capable of saving energy and reducing consumption |
| CN113747548B (en) * | 2020-05-27 | 2023-11-10 | 上海华为技术有限公司 | Electric energy control method and related equipment |
| CN113937749A (en) * | 2021-10-20 | 2022-01-14 | 安徽工程大学 | Power control method of photovoltaic micro-grid hybrid energy storage system |
| CN114285055B (en) * | 2021-12-30 | 2022-06-17 | 金名正元（北京）科技有限公司 | Intelligent power supply management method combining wind-solar power generation |
| CN114785624A (en) * | 2022-05-16 | 2022-07-22 | 深圳市特发信息股份有限公司 | Local area network communication system and power self-supply mutual supply method thereof |
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| CN102709949A (en) * | 2012-06-15 | 2012-10-03 | 中国电力科学研究院 | Micro-grid coordinated control system |
| CN203166549U (en) * | 2013-01-25 | 2013-08-28 | 中国电力科学研究院 | Wind-solar hybrid power-generation coordination control system |
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