CN103457514B - Dual-mode solar photovoltaic power generation system - Google Patents
Dual-mode solar photovoltaic power generation system Download PDFInfo
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- CN103457514B CN103457514B CN201310387650.1A CN201310387650A CN103457514B CN 103457514 B CN103457514 B CN 103457514B CN 201310387650 A CN201310387650 A CN 201310387650A CN 103457514 B CN103457514 B CN 103457514B
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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
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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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
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
Abstract
The invention provides a dual-mode solar photovoltaic power generation system which is composed of four parts, namely a distribution type photovoltaic power generation subsystem, an energy storage subsystem, a load and an integrated management subsystem. According to the dual-mode solar photovoltaic power generation system, the energy storage subsystem is used as an energy buffering common platform, the integrated management subsystem is used as an integrated management platform, and therefore unified optimization objectives of power generation with maximal efficiency, operation with maximal economic benefit and securitization of demand responses are achieved for distribution type solar photovoltaic power generation.
Description
Technical field
The present invention relates to a kind of bimodulus solar photovoltaic generation system, especially relate to a kind of bimodulus solar photovoltaic generation system being mainly used in the distributed roof photovoltaic power station built on the building of city, garden, community etc.
Background technology
The renewable energy power generation such as solar power generation, wind power generation, tidal power, for solving energy crisis and the problem of environmental pollution of human society growing tension, provides an alternative resolving ideas and way.Ether energy photovoltaic generation is example, along with the expanding day of the scale of whole world installation in recent years, is just becoming the important technical of renewable energy utilization.
Solar energy power generating simply can be divided into two kinds of modes, a kind of is centralized solar photovoltaic power plant, by building the large solar photovoltaic power station of tens megawatts and even the hundreds of mw scale concentrated in flakes, convert solar energy acquisition to electric energy, through conveying and the allotment of bulk power grid, be supplied to user and use.Centralized solar photovoltaic power plant, because solar power generation has intermittence and instable feature, often causes great impact to electrical network, causes adverse effect to the safety of electrical network; And centralized production of energy method, still do not break away from the production and application pattern of traditional electric energy, cause a large amount of valuable electric energy to produce a large amount of irreversible loss in the course of conveying of multistage conversion and long distance.Also have one to be distributed solar photovoltaic power plant, scale several megawatt and even several kilowatts not etc., generally to be built on building roof or the ground etc. near user.Distributed solar photovoltaic power plant, near user side, do not need High Pressure Difference to change and conveying, the middle loss of process decreases, and the utilization ratio of new forms of energy is improved.But, remain gap due to solar power generation with instability, may adverse effect be caused to the quality of power supply of user; And namely send out i.e. use, can not demand response; When under generation grid fault conditions, distributed solar photovoltaic power plant also must be out of service, can not reach from the autonomous target of net.
In existing technical scheme, general employing is by configuring the mode of energy-storage system, by distributed solar energy photovoltaic generating system, turn the integrated system of a distributed solar energy power generating and energy storage integrated into, to solve the problem of new forms of energy instability, can solve again from the autonomous problem of net.But, owing to needing to configure fairly large energy-storage system, cause cost increase.
Summary of the invention
The technical problem to be solved in the present invention is, overcomes the above-mentioned defect that prior art exists, provides a kind of energy utilization rate high, the bimodulus solar photovoltaic generation system of working stability.
The technical solution adopted for the present invention to solve the technical problems is: bimodulus solar photovoltaic generation system, is made up of distributed photovoltaic power generation subsystem, energy storage subsystem, load, integrated management subsystem four parts;
Described distributed photovoltaic power generation subsystem comprises solar battery array, DC power distribution cabinet, photovoltaic DC-to-AC converter, solar battery array is electrically connected with DC power distribution cabinet, DC power distribution cabinet is electrically connected with photovoltaic DC-to-AC converter by K switch 1, photovoltaic DC-to-AC converter is electrically connected with AC power distribution cabinet/AC distribution panel by K switch 2, and AC power distribution cabinet/AC distribution panel is by the external civil power of K switch 0; Distributed photovoltaic power generation subsystem mainly realizes gathering solar energy and changes direct current energy into, and is converted to AC energy further.
Described load is as with can part, comprise a type load (as emergency light) of not interruptible load and two type loads (as air-conditioning) of energy interruption of power supply, AC power distribution cabinet/AC distribution panel is electrically connected with two type loads by K switch 4, K switch 7, and AC power distribution cabinet/AC distribution panel is electrically connected with a type load by K switch 4, K switch 8;
Described energy storage subsystem comprises battery pile and bidirectional energy-storage inverter, and battery pile is electrically connected with bidirectional energy-storage inverter is two-way by K switch 5, and bidirectional energy-storage inverter is electrically connected with AC power distribution cabinet/AC distribution panel is two-way by K switch 6; Energy storage subsystem is as the buffer platform of energy and power, for storing solar energy electricity, being fed to electrical network further by bidirectional energy-storage inverter and utilizing, in support by a part of electric flux simultaneously, under electric power thus supplied, can not discharge to a type load emergency service at utility power failure.
Integrated management subsystem is implemented to control the management of whole bimodulus solar photovoltaic generation system, and command system work in each mode, realizes the functions such as energy acquisition, production, conversion, emergency service, energy storage management subsystem, stored energy release.
Described integrated management subsystem comprises civil power monitoring modular, new forms of energy monitoring modular, BMS monitoring modular, step price database, load monitoring module and mode of operation decision-making module, civil power monitoring modular, new forms of energy monitoring modular, BMS monitoring modular, step price database and load monitoring module are all electrically connected with mode of operation decision-making module is two-way, new forms of energy monitoring modular is connected with the two-way electricity of distributed photovoltaic power generation subsystem, BMS monitoring modular is connected with the two-way electricity of energy storage subsystem, load monitoring module is connected with the two-way electricity of load, civil power monitoring modular is electrically connected with AC power distribution cabinet/AC distribution panel is two-way.
Civil power monitoring modular, the quality of power supply relevant information such as voltage, electric current, power, power factor (PF) of main monitoring civil power.BMS monitoring modular, voltage, electric current, temperature, the SOC(charged state of main monitoring energy storage subsystem), SOH(health status) etc. information.The step price data that step price database purchase is current.Load monitoring module, that monitors load uses energy situation, realizes the excision of a non-type load under case of emergency.New forms of energy monitoring modular mainly monitors the information such as input voltage, input current, input power, output voltage, output current, power output, solar energy irradiance of distributed photovoltaic power generation subsystem.
The mode of operation that described mode of operation decision-making module determines has: parallel network power generation pattern, smooth operation pattern, photovoltaic move peak pattern and from net autonomous mode.
The capacity setting of described energy storage subsystem for: be greater than 2 times of one type load meet an urgent need institute's energy requirement, be less than 10 times of one type load and meet an urgent need institute's energy requirement; Being set to of energy storage subsystem power: get 1.5 times of one type load and start maximum power, 1.2 times of photovoltaic power generation array maximum powers maximum between the two, as the minimum power of energy storage subsystem; Get 3 times of one type load and start maximum power and 1.5 times of photovoltaic power generation array maximum powers minimum value between the two, as the maximum power of energy storage subsystem; Get 1.5 times of one type load due to energy storage subsystem power and start maximum power and 1.2 times of photovoltaic power generation array maximum powers maximum between the two, as the minimum power of energy storage subsystem, thus can meet energy storage subsystem to solar energy power generating power-balance demand, the demand of next type load electricity consumption starting power of case of emergency can be met simultaneously.Specifying the maximum power of energy storage subsystem, is the demand in order to meet cost input and economy.Energy storage subsystem is met an urgent need between required energy at 2 times to 10 times one type loads, can meet needed for emergency service, and also have certain spare capacity to meet photovoltaic power generation quantity simultaneously and move peak demand, energy storage subsystem cost can not be too high, controls at zone of reasonableness.
Civil power off-peak period, energy storage subsystem SOC(charged state) be in high-end trim operation, SOC(charged state) control 70% ~ 90%; When the civil power high price period, energy storage subsystem SOC(charged state) be in low-end trim and run, preferred SOC(charged state) control 20% ~ 50%, now under SOC minimum state, energy storage subsystem carried charge is greater than 1.5 times of one type load and meets an urgent need institute's energy requirement.Deposit peak by energy storage subsystem paddy to put, reduce the use of peak value city electricity to greatest extent, the energy of photovoltaic generation is realized maximum economic worth simultaneously.
In a period of time before sun sunrise and sunset, the radiant illumination of the sun is lower, general distributed photovoltaic power generation subsystem generated output is less than 5% of photovoltaic DC-to-AC converter rated power, now photovoltaic DC-to-AC converter inversion efficiency is low even can not start, and the quality of power supply is also very poor, photovoltaic institute energy output is directly stored in energy storage subsystem by this period, improves the overall generating efficiency of solar energy power generating.
The generated output defining certain moment distributed photovoltaic power generation subsystem is P1; Definition synchronization load electric power is P2; Definition photovoltaic DC-to-AC converter rated power is P3, then the condition that various mode of operation need meet is described below successively:
The condition that must meet under parallel network power generation pattern has: the generated output P1/ load electric power P2 of (1) distributed photovoltaic power generation subsystem is less than 0.2; (2) electricity price is high crest segment electricity price; (3) civil power is normal; (4) the generated output P1/ photovoltaic DC-to-AC converter rated power P3 of distributed photovoltaic power generation subsystem is greater than 0.05; On off state under this pattern: K switch 0, K switch 4, K switch 5, K switch 6, K switch 7, K switch 8, K switch 1, K switch 2 close, and K switch 3 disconnects;
The condition that must meet under smooth operation pattern has: the generated output P1/ load electric power P2 of (1) distributed photovoltaic power generation subsystem is greater than 0.2; (2) electricity price is peak electricity tariff; (3) civil power is normal; (4) the generated output P1/ photovoltaic DC-to-AC converter rated power P3 of distributed photovoltaic power generation subsystem is greater than 0.05; On off state under this pattern: K switch 0, K switch 4, K switch 5, K switch 6, K switch 7, K switch 8, K switch 1, K switch 2 close, and K switch 3 disconnects;
The condition that photovoltaic must meet under moving peak pattern has: (1) electricity price be off-peak period electricity price or the generated output P1/ photovoltaic DC-to-AC converter rated power P3 of distributed photovoltaic power generation subsystem be less than 0.05; (2) civil power is normal; On off state under this pattern: K switch 0, K switch 5, K switch 6, K switch 8, K switch 7, K switch 4, K switch 3 close, and K switch 1, K switch 2 disconnect;
The condition that must meet under net autonomous mode has: (1) civil power is abnormal; On off state under this pattern: K switch 4, K switch 6, K switch 8, K switch 5, K switch 3 close, and K switch 0, K switch 1, K switch 2, K switch 7 disconnect.
The present invention with energy storage subsystem assembly for energy snubber common platform, with integrated management subsystem for comprehensive management platform, distributed solar energy photovoltaic generation is implemented to the unified optimization aim of maximum efficiency generating, maximum economic benefit operation, safe demand response.
Compared with prior art, bimodulus solar photovoltaic generation system of the present invention has following advantage: (1), based on the energy snubber of energy storage subsystem and power pooling feature, achieves distributed photovoltaic power generation subsystem and smoothly accesses and be incorporated into the power networks; (2) based on energy snubber and the power buffering common platform of energy storage subsystem, and total system management coordination, achieve running from net is autonomous of distributed photovoltaic power generation subsystem, meet emergent demand; (3) by utilizing the low light level to generate electricity, improve the whole efficiency of distributed photovoltaic power generation, adding photovoltaic power generation quantity; (4) using by part sun the subject of knowledge and the object of knowledge energy output being transferred to peak period, improve the economic benefit of distributed photovoltaic power generation, improve economy.
Accompanying drawing explanation
Fig. 1 is embodiment of the present invention bimodulus solar photovoltaic generation system structured flowchart;
Fig. 2 is embodiment of the present invention bimodulus solar photovoltaic generation system operational decisions block diagram.
Embodiment
Implementation method of the present invention is described in detail below in conjunction with accompanying drawing.
Be made up of four parts with reference to Fig. 1 the present invention: distributed photovoltaic power generation subsystem, energy storage subsystem, load, integrated management subsystem.
Described distributed photovoltaic power generation subsystem comprises solar battery array, DC power distribution cabinet, photovoltaic DC-to-AC converter, solar battery array is electrically connected with DC power distribution cabinet, DC power distribution cabinet is electrically connected with photovoltaic DC-to-AC converter by K switch 1, photovoltaic DC-to-AC converter is electrically connected with AC power distribution cabinet/AC distribution panel by K switch 2, and AC power distribution cabinet/AC distribution panel is by the external civil power of K switch 0; Distributed photovoltaic power generation subsystem mainly realizes gathering solar energy and changes direct current energy into, and is converted to AC energy further.
Described load is as with can part, be divided into the type load (as emergency light) of not interruptible load and can two type loads (as air-conditioning) of interruption of power supply, AC power distribution cabinet/AC distribution panel is electrically connected with two type loads by K switch 4, K switch 7, and AC power distribution cabinet/AC distribution panel is electrically connected with a type load by K switch 4, K switch 8; .
Described energy storage subsystem comprises battery pile and bidirectional energy-storage inverter, and battery pile is electrically connected with bidirectional energy-storage inverter is two-way by K switch 5, and bidirectional energy-storage inverter is electrically connected with AC power distribution cabinet/AC distribution panel is two-way by K switch 6; Energy storage subsystem is as the buffer platform of energy and power, solar energy electricity can be stored, also can be fed to electrical network further by bidirectional energy-storage inverter to utilize, in support by a part of electric flux simultaneously, under electric power thus supplied, can not discharge to a type load emergency service at utility power failure.
Integrated management subsystem is implemented to control the management of whole bimodulus solar photovoltaic generation system, and command system work in each mode, realizes the functions such as energy acquisition, production, conversion, emergency service, energy storage management subsystem, stored energy release.
Described integrated management subsystem comprises civil power monitoring modular, new forms of energy monitoring modular, BMS monitoring modular, step price database, load monitoring module and mode of operation decision-making module, civil power monitoring modular, new forms of energy monitoring modular, BMS monitoring modular, step price database and load monitoring module are all electrically connected with mode of operation decision-making module is two-way, new forms of energy monitoring modular is connected with the two-way electricity of distributed photovoltaic power generation subsystem, BMS monitoring modular is connected with the two-way electricity of energy storage subsystem, load monitoring module is connected with the two-way electricity of load, civil power monitoring modular is electrically connected with AC power distribution cabinet/AC distribution panel is two-way.
Civil power monitoring modular, the quality of power supply relevant information such as voltage, electric current, power, power factor (PF) of main monitoring civil power.BMS monitoring modular, voltage, electric current, temperature, the SOC(charged state of main monitoring energy storage subsystem), SOH(health status) etc. information.The step price data that step price database purchase is current.Load monitoring module, that monitors load uses energy situation, realizes the excision of a non-type load under case of emergency.New forms of energy monitoring modular mainly monitors the information such as input voltage, input current, input power, output voltage, output current, power output, solar energy irradiance of distributed photovoltaic power generation subsystem.
The capacity setting of described energy storage subsystem for: be greater than 2 times of one type load meet an urgent need institute's energy requirement, be less than 10 times of one type load and meet an urgent need institute's energy requirement; Being set to of energy storage subsystem power: get 1.5 times of one type load and start maximum power, 1.2 times of photovoltaic power generation array maximum powers maximum between the two, as the minimum power of energy storage subsystem; Get 3 times of one type load and start maximum power and 1.5 times of photovoltaic power generation array maximum powers minimum value between the two, as the maximum power of energy storage subsystem; Get 1.5 times of one type load due to energy storage subsystem power and start maximum power and 1.2 times of photovoltaic power generation array maximum powers maximum between the two, as the minimum power of energy storage subsystem, thus can meet energy storage subsystem to solar energy power generating power-balance demand, the demand of next type load electricity consumption starting power of case of emergency can be met simultaneously.Specifying the maximum power of energy storage subsystem, is the demand in order to meet cost input and economy.Energy storage subsystem is met an urgent need between required energy at 2 times to 10 times one type loads, can meet needed for emergency service, and also have certain spare capacity to meet photovoltaic power generation quantity simultaneously and move peak demand, energy storage subsystem cost can not be too high, controls at zone of reasonableness.
Fig. 2 is embodiment of the present invention bimodulus solar photovoltaic generation system operational decisions block diagram, is the core operation logic of integrated management subsystem.Various running status and the pattern of illustrative system is come below in conjunction with Fig. 2.
The mode of operation that described mode of operation decision-making module determines has: parallel network power generation pattern, smooth operation pattern, photovoltaic move peak pattern and from net autonomous mode.
The generated output defining certain moment distributed photovoltaic power generation subsystem is P1, is photovoltaic array generated output in the present embodiment; Definition synchronization load electric power is P2; Definition photovoltaic DC-to-AC converter rated power is P3.The condition that then various mode of operation need meet is described below successively.
Parallel network power generation pattern: the condition that must meet under this pattern has the generated output P1/ load electric power P2 of (1) distributed photovoltaic power generation subsystem to be less than 0.2; (2) electricity price is high crest segment electricity price; (3) civil power is normal; (4) the generated output P1/ photovoltaic DC-to-AC converter rated power P3 of distributed photovoltaic power generation subsystem is greater than 0.05.On off state under this pattern: K switch 0, K switch 4, K switch 5, K switch 6, K switch 7, K switch 8, K switch 1, K switch 2 close, and K switch 3 disconnects.Under this mode of operation, there is following characteristics: the generated output P1/ photovoltaic DC-to-AC converter rated power P3 of distributed photovoltaic power generation subsystem is greater than 0.05, show that illumination condition is good, photovoltaic DC-to-AC converter normally can start and carry out the tracking of MPPT(pressure point of maximum efficiency) maximal efficiency work generating; The generated output P1/ load electric power P2 of distributed photovoltaic power generation subsystem is less than 0.2, and show that load need for electricity is large, the ratio that solar power generation power accounts for aggregate supply is low, not easily causes harmful effect to load Electrical Safety; Electricity price is electricity price peak period, and the electric energy that sun the subject of knowledge and the object of knowledge sends obtains maximum economic worth and utilizes; Civil power is normal, the necessary condition of solar grid-connected generating.
Smooth operation pattern: the condition that must meet under this pattern has the generated output P1/ load electric power P2 of (1) distributed photovoltaic power generation subsystem to be greater than 0.2; (2) electricity price is peak electricity tariff; (3) civil power is normal; (4) the generated output P1/ photovoltaic DC-to-AC converter rated power P3 of distributed photovoltaic power generation subsystem is greater than 0.05.On off state under this pattern: K switch 0, K switch 4, K switch 5, K switch 6, K switch 7, K switch 8, K switch 1, K switch 2 close, and K switch 3 disconnects.Under this mode of operation, there is following characteristics: the generated output P1/ photovoltaic DC-to-AC converter rated power P3 of distributed photovoltaic power generation subsystem is greater than 0.05, show that illumination condition is good, photovoltaic DC-to-AC converter normally can start and carry out the tracking of MPPT(pressure point of maximum efficiency) maximal efficiency work generating; The generated output P1/ load electric power P2 of distributed photovoltaic power generation subsystem is greater than 0.2, show that load need for electricity is little, the ratio that solar power generation power accounts for aggregate supply is high, harmful effect may be caused to load Electrical Safety, therefore need to carry out the level and smooth of power with energy-storage system, bidirectional energy-storage inverter works; Electricity price is high crest segment electricity price, and the electric energy that sun the subject of knowledge and the object of knowledge sends obtains maximum economic worth and utilizes; Civil power is normal, the necessary condition of solar grid-connected generating.
Photovoltaic moves peak pattern: the condition that must meet under this pattern have (1) electricity price be off-peak period electricity price or the generated output P1/ photovoltaic DC-to-AC converter rated power P3 of distributed photovoltaic power generation subsystem be less than 0.05; (2) civil power is normal.On off state under this pattern: K switch 0, K switch 5, K switch 6, K switch 8, K switch 7, K switch 4, K switch 3 close, and K switch 1, K switch 2 disconnect.Under this mode of operation, there is following characteristics: electricity price is the par period, the electric energy that sun the subject of knowledge and the object of knowledge sends can not obtain maximum economic worth and utilize, therefore solar energy electricity can be stored in energy storage subsystem, treat that electricity price is powered to load peak period again, reduce the use amount of civil power peak period, play the economic worth that solar energy is maximum; Civil power is normal, the necessary condition of solar grid-connected generating.
Special a kind of situation, when the generated output P1/ photovoltaic DC-to-AC converter rated power P3 of distributed photovoltaic power generation subsystem is less than 0.05, show that illumination condition is poor, photovoltaic DC-to-AC converter now possibly normally cannot start and carry out the tracking of MPPT(pressure point of maximum efficiency) maximal efficiency work generating, even if or can normally start, but the efficiency of inversion generating is also very low, now, directly can be stored solar energy-electric energy by energy storage subsystem, in low-power small area analysis situation, the charge efficiency of energy storage subsystem is high all the better, even therefore can realize under low light condition, still can realize the generating of distributed photovoltaic power generation subsystem and be stored in battery energy storage system.Solar energy whole generating capacity is utilized to improve more than 5% like this.
From net autonomous mode: condition (1) civil power that must meet under this pattern is abnormal.On off state under this pattern: K switch 4, K switch 6, K switch 8, K switch 5, K switch 3 close, and K switch 0, K switch 1, K switch 2, K switch 7 disconnect.Under this mode of operation, there is following characteristics: civil power is abnormal, under the energy allotment and cushioning effect of energy storage subsystem, distributed photovoltaic power generation subsystem and energy storage subsystem provide emergency power jointly to a type load, ensure need for electricity and the Electrical Safety of important load.
In a word, compared with prior art, building energy storage provided by the present invention is met an urgent need energy conserving system, has following feature and advantage:
(1) based on energy snubber and the power pooling feature of energy storage subsystem, achieve distributed photovoltaic power generation system and smoothly access and be incorporated into the power networks;
(2) based on energy snubber and the power buffering common platform of energy storage subsystem, and total system management coordination, achieve running from net is autonomous of distributed photovoltaic power generation subsystem, meet emergent demand;
(3) by utilizing the low light level to generate electricity, improve the whole efficiency of distributed photovoltaic power generation, adding photovoltaic power generation quantity;
(4) using by part sun the subject of knowledge and the object of knowledge energy output being transferred to peak period, improve the economic benefit of distributed photovoltaic power generation, improve economy.
The above is only preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvement and modification, these improve and modify and also should be considered as protection scope of the present invention.
Claims (2)
1. bimodulus solar photovoltaic generation system, is characterized in that, is made up of distributed photovoltaic power generation subsystem, energy storage subsystem, load, integrated management subsystem four parts;
Described distributed photovoltaic power generation subsystem comprises solar battery array, DC power distribution cabinet, photovoltaic DC-to-AC converter, solar battery array is electrically connected with DC power distribution cabinet, DC power distribution cabinet is electrically connected with photovoltaic DC-to-AC converter by K switch 1, photovoltaic DC-to-AC converter is electrically connected with AC power distribution cabinet/AC distribution panel by K switch 2, and AC power distribution cabinet/AC distribution panel is by the external civil power of K switch 0; Distributed photovoltaic power generation subsystem mainly realizes gathering solar energy and changes direct current energy into, and is converted to AC energy further;
Described load comprises a type load of not interruptible load and two type loads of energy interruption of power supply, and AC power distribution cabinet/AC distribution panel is electrically connected with two type loads by K switch 4, K switch 7, and AC power distribution cabinet/AC distribution panel is electrically connected with a type load by K switch 4, K switch 8;
Described energy storage subsystem comprises battery pile and bidirectional energy-storage inverter, and battery pile is electrically connected with bidirectional energy-storage inverter is two-way by K switch 5, and bidirectional energy-storage inverter is electrically connected with AC power distribution cabinet/AC distribution panel is two-way by K switch 6; Energy storage subsystem is as the buffer platform of energy and power, for storing solar energy electricity, being fed to electrical network further by bidirectional energy-storage inverter and utilizing, in support by a part of electric flux simultaneously, can not under electric power thus supplied, discharge to a type load emergency service at utility power failure;
Integrated management subsystem is implemented to control the management of whole bimodulus solar photovoltaic generation system;
Described integrated management subsystem comprises civil power monitoring modular, new forms of energy monitoring modular, BMS monitoring modular, step price database, load monitoring module and mode of operation decision-making module, civil power monitoring modular, new forms of energy monitoring modular, BMS monitoring modular, step price database and load monitoring module are all electrically connected with mode of operation decision-making module is two-way, new forms of energy monitoring modular is connected with the two-way electricity of distributed photovoltaic power generation subsystem, BMS monitoring modular is connected with the two-way electricity of energy storage subsystem, load monitoring module is connected with the two-way electricity of load, civil power monitoring modular is electrically connected with AC power distribution cabinet/AC distribution panel is two-way,
Civil power monitoring modular, voltage, electric current, power, the power factor (PF) quality of power supply relevant information of monitoring civil power; BMS monitoring modular, voltage, electric current, temperature, charged state, the health status information of monitoring energy storage subsystem; The step price data that step price database purchase is current; The use energy situation of load monitoring module monitors load, realizes the excision of a non-type load under case of emergency; The input voltage of new forms of energy monitoring module monitors distributed photovoltaic power generation subsystem, input current, input power, output voltage, output current, power output, solar energy irradiance information;
The mode of operation that described mode of operation decision-making module determines has: parallel network power generation pattern, smooth operation pattern, photovoltaic move peak pattern and from net autonomous mode;
The capacity setting of described energy storage subsystem becomes: be greater than 2 times of one type load meet an urgent need institute's energy requirement, be less than 10 times of one type load and meet an urgent need institute's energy requirement; The power setting of energy storage subsystem becomes: get 1.5 times of one type load and start maximum power and 1.2 times of solar battery array maximum powers maximum between the two, as the minimum power of energy storage subsystem; Get 3 times of one type load and start maximum power and 1.5 times of solar battery array maximum powers minimum value between the two, as the maximum power of energy storage subsystem;
Civil power off-peak period, the charged state of energy storage subsystem is in high-end trim and runs, and charged state controls 70% ~ 90%; When the civil power high price period, the charged state of energy storage subsystem is in low-end trim and runs, and charged state controls 20% ~ 50%, and now, under SOC minimum state, energy storage subsystem carried charge is greater than 1.5 times of one type load and meets an urgent need institute's energy requirement.
2. bimodulus solar photovoltaic generation system according to claim 1, is characterized in that, the generated output defining certain moment distributed photovoltaic power generation subsystem is P1; Definition synchronization load electric power is P2; Definition photovoltaic DC-to-AC converter rated power is P3; The condition that then various mode of operation need meet is described below successively:
The condition that must meet under parallel network power generation pattern has: the generated output P1/ load electric power P2 of (1) distributed photovoltaic power generation subsystem is less than 0.2; (2) electricity price is high crest segment electricity price; (3) civil power is normal; (4) the generated output P1/ photovoltaic DC-to-AC converter rated power P3 of distributed photovoltaic power generation subsystem is greater than 0.05; On off state under this pattern: K switch 0, K switch 4, K switch 5, K switch 6, K switch 7, K switch 8, K switch 1, K switch 2 close, and K switch 3 disconnects;
The condition that must meet under smooth operation pattern has: the generated output P1/ load electric power P2 of (1) distributed photovoltaic power generation subsystem is greater than 0.2; (2) electricity price is peak electricity tariff; (3) civil power is normal; (4) the generated output P1/ photovoltaic DC-to-AC converter rated power P3 of distributed photovoltaic power generation subsystem is greater than 0.05; On off state under this pattern: K switch 0, K switch 4, K switch 5, K switch 6, K switch 7, K switch 8, K switch 1, K switch 2 close, and K switch 3 disconnects;
The condition that photovoltaic must meet under moving peak pattern has: (1) electricity price be off-peak period electricity price or the generated output P1/ photovoltaic DC-to-AC converter rated power P3 of distributed photovoltaic power generation subsystem be less than 0.05; (2) civil power is normal; On off state under this pattern: K switch 0, K switch 5, K switch 6, K switch 8, K switch 7, K switch 4, K switch 3 close, and K switch 1, K switch 2 disconnect;
The condition that must meet under net autonomous mode has: (1) civil power is abnormal; On off state under this pattern: K switch 4, K switch 6, K switch 8, K switch 5, K switch 3 close, and K switch 0, K switch 1, K switch 2, K switch 7 disconnect.
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| CN103840486B (en) * | 2014-03-07 | 2015-12-30 | 广东志成冠军集团有限公司 | A kind of control method of photovoltaic power supply system grid connection of accumulation energy type |
| CN104167799B (en) * | 2014-08-29 | 2017-10-17 | 阳光电源股份有限公司 | A kind of charge-discharge system, method and photovoltaic generating system |
| CN104362747A (en) * | 2014-11-05 | 2015-02-18 | 芜湖中艺企业管理咨询有限公司 | Intelligent photovoltaic micro-grid energy monitoring management device |
| CN106329555B (en) * | 2015-06-26 | 2019-10-11 | 比亚迪股份有限公司 | The control method of photovoltaic energy storage micro-grid system and photovoltaic energy storage micro-grid system |
| CN106981929A (en) * | 2017-06-07 | 2017-07-25 | 合肥励仙电力工程有限公司 | A kind of energy-conserving and environment-protective wireless remote monitoring system of electric substation communicated based on GPRS |
| CN110071521B (en) | 2018-01-23 | 2021-09-03 | 台达电子企业管理（上海）有限公司 | Power distribution equipment and power distribution method |
| CN109038647A (en) * | 2018-07-09 | 2018-12-18 | 广东铨镁能源集团有限公司 | Photovoltaic energy oxygen system and its electric energy management method |
| CN110112775B (en) * | 2019-05-07 | 2023-11-14 | 中国电力科学研究院有限公司 | Micro-energy network system containing distributed energy storage |
| CN110350579B (en) * | 2019-07-10 | 2022-12-27 | 青海黄河上游水电开发有限责任公司光伏产业技术分公司 | Multi-energy-storage-battery operation model capable of achieving smooth photovoltaic output |
| CN113690878B (en) * | 2021-08-03 | 2023-11-21 | 北京京能能源技术研究有限责任公司 | Three-phase switching control method for micro-grid |
| CN114772815B (en) * | 2022-05-10 | 2023-08-15 | 中建三局绿色产业投资有限公司 | Photovoltaic power generation sewage treatment integrated equipment and control method thereof |
| CN116683730B (en) * | 2023-05-26 | 2023-12-05 | 中节能(监利)太阳能科技有限公司 | Photovoltaic centralized inversion power generation system and device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101345500A (en) * | 2008-05-16 | 2009-01-14 | 广东志成冠军集团有限公司 | Photovoltaic power generation system with grid-connected generation, independent power generation and UPS function |
| CN102361328A (en) * | 2011-10-25 | 2012-02-22 | 中国科学技术大学 | Wind and light complement distributed micro-grid system for comprehensively utilizing commercial power |
| CN102570455A (en) * | 2012-01-12 | 2012-07-11 | 天津市电力公司 | Intelligent microgrid power-supply system |
| CN103138636A (en) * | 2011-11-28 | 2013-06-05 | 北汽福田汽车股份有限公司 | Hybrid power supply system for photovoltaic off network, photovoltaic combined network and energy storage |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2325970A3 (en) * | 2009-11-19 | 2015-01-21 | Samsung SDI Co., Ltd. | Energy management system and grid-connected energy storage system including the energy management system |
-
2013
- 2013-08-31 CN CN201310387650.1A patent/CN103457514B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101345500A (en) * | 2008-05-16 | 2009-01-14 | 广东志成冠军集团有限公司 | Photovoltaic power generation system with grid-connected generation, independent power generation and UPS function |
| CN102361328A (en) * | 2011-10-25 | 2012-02-22 | 中国科学技术大学 | Wind and light complement distributed micro-grid system for comprehensively utilizing commercial power |
| CN103138636A (en) * | 2011-11-28 | 2013-06-05 | 北汽福田汽车股份有限公司 | Hybrid power supply system for photovoltaic off network, photovoltaic combined network and energy storage |
| CN102570455A (en) * | 2012-01-12 | 2012-07-11 | 天津市电力公司 | Intelligent microgrid power-supply system |
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