CN103117564A - 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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- CN103117564A CN103117564A CN2013100295304A CN201310029530A CN103117564A CN 103117564 A CN103117564 A CN 103117564A CN 2013100295304 A CN2013100295304 A CN 2013100295304A CN 201310029530 A CN201310029530 A CN 201310029530A CN 103117564 A CN103117564 A CN 103117564A
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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 the power automation field, be specifically related to a kind of wind light mutual complementing power generation coordinated control system and method.
Background technology
Improve because the national life level of China is lasting, 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 the urban district, the rural area progressively to the island of remoteness, high mountain, desert cover, these outlying communication base stations are because the constraint that is subject to geographical environment can't access civil power.The wind light mutual complementing power station that utilizes wind generating technology and photovoltaic power generation technology to consist of for outlying communication base station provides part or all of electric energy, thereby makes up because civil power can't access the supply of electric power deficiency that causes.The communication equipment great majority of base station need DC power supply, and in the wind light mutual complementing power station, what photovoltaic solar sent is direct current, can be directly or provide in the mode of series connection the DC power supply that satisfies these equipment requirements.
For in the base station, other needs the equipment of Alternating Current Power Supply, the alternating current that can send by wind power generation, diesel generation perhaps increases by solar power generation the AC power that the DC/AC inverter satisfies these equipment requirements.Along with the aggravation of market competition, mobile communication subscriber is more and more higher to the requirement of network quality, also must avoid because power failure causes the phenomenon of base station service quit as far as possible.Be to ensure the reliable power supply of remote base station, the 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, adopted Industrial Ethernet to connect between main website of system and system's slave station, can realize the quick transmission of mass data; Adopt GPRS or cdma wireless communication mode and Surveillance center to realize the mutual of information, can avoid being located in due to remote base station the geographical environments such as island, desert and limit and can't carry out wire communication, perhaps the connection due to long distance connects the problems such as signal interference that may cause.
In order to realize the foregoing invention purpose, 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 main website of system and system's slave station, and main website of described system communicates connection with the system slave station by Industrial Ethernet.
Main website of described system 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 transceiver, 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, the 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 greater than 0, if execution in step 4, execution in step 6 if not;
Step 4: the state-of-charge SOC of the current storage battery of judgement
tWhether more than or equal to the state-of-charge lower limit SOC of storage battery
minIf execution in step 5, reduce if not load and to after charge in batteries, execution in step 8;
Step 5: can the judgement storage battery supply with P fully
netIf supply with P by storage battery
netRear execution in step 8 reduces execution in step 8 after load terminal if not;
Step 6: the state-of-charge SOC of the current storage battery of judgement
tWhether less than or equal to the state-of-charge upper limit SOC of storage battery
maxIf execution in step 7, increase if not load or reduce the diesel engine generator rear execution in step 8 of exerting oneself;
Step 7: to charge in batteries, and judge whether and can receive fully | P
net|, if | P
net| all for to after charge in batteries, execution in step 8; If not first to charge in batteries, then increase load or reduce diesel engine generator exert oneself after, execution in step 8;
Step 8: calculate next state-of-charge SOC of storage battery constantly
t+1
In described step 1, gather environmental information by the environmental monitoring terminal, 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; Gather diesel engine generator by diesel engine generator and exert oneself, and gather load current and load voltage by load terminal.
In described step 2, calculate photovoltaic power generation equipment power output P according to described ambient temperature and solar irradiance
PV, calculate wind driven generator output power P according to wind speed
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 be realized the quick transmission of mass data;
2. adopt GPRS or cdma wireless communication mode and Surveillance center to realize the mutual of information, can avoid being located in due to remote base station the geographical environments such as island, desert and limit and can't carry out wire communication, perhaps the connection due to long distance connects the problems such as signal interference that may cause;
3. carry out around effectively discharging and recharging and normally moving of storage battery, both ensured the reliable power supply of outlying communication base station, extended again the useful life of storage battery;
4. the keeper can check by the mode of SMS or multimedia message the real-time running state of coordinated control system.
Description of drawings
Fig. 1 is wind light mutual complementing power generation coordinated control system structural representation in the embodiment of the present invention;
Fig. 2 is wind and solar hybrid generating system structural representation in the embodiment of the present invention;
Fig. 3 is wind light mutual complementing power generation control method for coordinating flow chart in the embodiment of the present invention.
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 main website of system and system's slave station, main website of described system communicates connection with the system slave station by Industrial Ethernet.
Main website of described system 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 transceiver, 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, the 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, the solar irradiation strong wind was little, and the large solar irradiation of wind-force in evening does not have, so can utilize the substantially opposite 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 one cover 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 the power generation link, will have probabilistic wind energy respectively, solar energy is converted into the stable energy; For the energy supply avoiding to greatest extent causing due to external factor such as weather, environment and the imbalance between consuming, adopt in system the access storage battery to bear the storage link of 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 of operating voltage and DC bus-bar voltage coupling 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 the continuous and stable of system power supply, can consider to introduce the reserve diesel engine generator, the apolegamy of reserve diesel engine generator to a great extent or according to the wind-force of locality, sunshine resources supplIes determine.The alternating current that wind-driven generator and diesel engine generator send, become direct current access dc bus after the rectification of AC/DC inverter, the direct current that photovoltaic generation sends also accesses dc bus be converted to the direct current of relevant voltage grade by the DC/DC inverter after, under the control of coordinated control system, dc bus charges to storage battery by the DC/DC inverter.The function of coordinated control system comprises controls wind-driven generator, diesel engine generator and solar energy power generating to the Charge Management of storage battery; Realization is to the discharge management of storage battery to load; 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 need to provide continual electric power energy as the autonomous power supply system of outlying communication base station, and is 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 characteristics 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 the wind and solar hybrid generating system operation expense, reduce system operation reliability.So, guarantee the normal of accumulator charging/discharging process, namely discharging and recharging effectively of storage battery controlled, particularly key just seems; Simultaneously, 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 the most flimsy part in whole system due to own characteristic and charge-discharge characteristic.For these reasons, to carry out around effectively discharging and recharging and normally moving of storage battery with regard to the coordination control strategy that makes wind and solar hybrid generating system.
The remaining ampere-hour capacity of state-of-charge SOC=storage battery of storage battery/specified ampere-hour capacity
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 satisfy memory capacity constraints constantly, that is:
SOC
min?SOC
t≤SOC
max
When also having dump power after honourable power satisfies load, to charge in batteries, and when honourable underpower, at first by the battery discharging supply load, like this, utilize energy storage device with unnecessary power storage in the situation that satisfy loading demand, and when lower or intensity of illumination is weak at wind speed again by the energy storage device supply load that discharges, thereby can improve renewable energy utilization efficient, 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 published in 2008, by Zhao Zhengming, " design and construction of solar photovoltaic generation system " that Liu Jianzheng, the chief editor's such as Sun Xiaoying and Yuan Liqiang " solar energy power generating and application thereof " and Science Press published in 2004, edited by solar photoelectric association [day] calculates photovoltaic power generation equipment power output P
PV
Calculate wind driven generator output power P according to China Electric Power Publishing House published in 2003, warm by Wang Cheng and Zhang Yuan edits " wind power generation "
WT
Step 3: judgement P
netWhether greater than 0, if execution in step 4, execution in step 6 if not;
Step 4: the state-of-charge SOC of the current storage battery of judgement
tWhether more than or equal to the state-of-charge lower limit SOC of storage battery
minIf execution in step 5, reduce if not load and to after charge in batteries, execution in step 8;
Step 5: can the judgement storage battery supply with P fully
netIf supply with P by storage battery
netRear execution in step 8 reduces execution in step 8 after load terminal if not;
Step 6: the state-of-charge SOC of the current storage battery of judgement
tWhether less than or equal to the state-of-charge upper limit SOC of storage battery
maxIf execution in step 7, increase if not load or reduce the diesel engine generator rear execution in step 8 of exerting oneself;
Step 7: to charge in batteries, and judge whether and can receive fully | P
net|, if | P
net| all for to after charge in batteries, execution in step 8; If not first to charge in batteries, then increase load or reduce diesel engine generator exert oneself after, execution in step 8;
Step 8: calculate next state-of-charge SOC of storage battery constantly
t+1
In described step 1, gather environmental information by the environmental monitoring terminal, 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; Gather diesel engine generator by diesel engine generator and exert oneself, and gather load current and load voltage by load terminal.
In described step 2, calculate photovoltaic power generation equipment power output P according to described ambient temperature and solar irradiance
PV, calculate wind driven generator output power P according to wind speed
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, when also having dump power after honourable power satisfies load, to charge in batteries, and when honourable underpower, at first by the battery discharging supply load, like this, utilize energy storage device with unnecessary power storage in the situation that satisfy loading demand, and when lower or intensity of illumination is weak at wind speed again by the energy storage device supply load that discharges.
Should be noted that at last: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit, although with reference to above-described embodiment, the present invention is had been described in detail, 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 break away 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. wind light mutual complementing power generation coordinated control system, it is characterized in that: described wind light mutual complementing power generation coordinated control system comprises main website of system and system's slave station, main website of described system communicates connection with the system slave station by Industrial Ethernet.
2. wind light mutual complementing power generation coordinated control system according to claim 1, it is characterized in that: main website of described system comprises master controller and liquid crystal display, described master controller adopts PC or built-in PC.
3. wind light mutual complementing power generation coordinated control system according to claim 2 is characterized in that: described master controller adopts Industrial Ethernet network interface card and described terminal on the spot to communicate, and employing GPRS or CDMA and Surveillance center carry out radio communication.
4. wind light mutual complementing power generation coordinated control system according to claim 1, it is characterized in that: 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.
5. wind light mutual complementing power generation coordinated control system according to claim 4, it 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 transceiver, data service unit, antenna and launching tower.
6. wind light mutual complementing power generation coordinated control system according to claim 4, 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, the switching value input signal is processed and control relay output is processed.
7. wind light mutual complementing power generation coordinated control system according to claim 1, it 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.
8. 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 greater than 0, if execution in step 4, execution in step 6 if not;
Step 4: the state-of-charge SOC of the current storage battery of judgement
tWhether more than or equal to the state-of-charge lower limit SOC of storage battery
minIf execution in step 5, reduce if not load and to after charge in batteries, execution in step 8;
Step 5: can the judgement storage battery supply with P fully
netIf supply with P by storage battery
netRear execution in step 8 reduces execution in step 8 after load terminal if not;
Step 6: the state-of-charge SOC of the current storage battery of judgement
tWhether less than or equal to the state-of-charge upper limit SOC of storage battery
maxIf execution in step 7, increase if not load or reduce the diesel engine generator rear execution in step 8 of exerting oneself;
Step 7: to charge in batteries, and judge whether and can receive fully | P
net|, if | P
net| all for to after charge in batteries, execution in step 8; If not first to charge in batteries, then increase load or reduce diesel engine generator exert oneself after, execution in step 8;
Step 8: calculate next state-of-charge SOC of storage battery constantly
t+1
9. wind light mutual complementing power generation control method for coordinating according to claim 8, it is characterized in that: in described step 1, gather environmental information by the environmental monitoring terminal, 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; Gather diesel engine generator by diesel engine generator and exert oneself, and gather load current and load voltage by load terminal.
10. wind light mutual complementing power generation control method for coordinating according to claim 8, is characterized in that: in described step 2, calculate photovoltaic power generation equipment power output P according to described ambient temperature and solar irradiance
PV, calculate wind driven generator output power P according to wind speed
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
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| 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 |
| 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 |
| CN105470989A (en) * | 2016-01-05 | 2016-04-06 | 南通大学 | Multi-intelligent-agent energy management system and method for modularized wind power generation unit |
| CN109272258A (en) * | 2018-11-08 | 2019-01-25 | 国网山东省电力公司电力科学研究院 | Region wind light generation stock assessment method based on K-means cluster |
| 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 |
| CN114285055A (en) * | 2021-12-30 | 2022-04-05 | 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 |
| EP4145661A4 (en) * | 2020-05-27 | 2024-01-17 | Huawei Technologies Co., Ltd. | Electric energy control method and related device |
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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 |
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| 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 |
| CN105470989A (en) * | 2016-01-05 | 2016-04-06 | 南通大学 | Multi-intelligent-agent energy management system and method for modularized wind power generation unit |
| CN109272258A (en) * | 2018-11-08 | 2019-01-25 | 国网山东省电力公司电力科学研究院 | Region wind light generation stock assessment method based on K-means cluster |
| EP4145661A4 (en) * | 2020-05-27 | 2024-01-17 | Huawei Technologies Co., Ltd. | Electric energy control method and related device |
| 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 |
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| 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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| CN103117564B (en) | 2014-12-10 |
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