CN102868173B - Distributive independent photovoltaic power generation system and method - Google Patents
Distributive independent photovoltaic power generation system and method Download PDFInfo
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- CN102868173B CN102868173B CN201210309575.2A CN201210309575A CN102868173B CN 102868173 B CN102868173 B CN 102868173B CN 201210309575 A CN201210309575 A CN 201210309575A CN 102868173 B CN102868173 B CN 102868173B
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000010248 power generation Methods 0.000 title abstract description 12
- 230000003993 interaction Effects 0.000 claims abstract description 35
- 238000004891 communication Methods 0.000 claims description 9
- 238000004378 air conditioning Methods 0.000 claims description 3
- 230000001939 inductive effect Effects 0.000 claims description 3
- 230000001934 delay Effects 0.000 claims description 2
- 230000005611 electricity Effects 0.000 abstract description 9
- 230000000694 effects Effects 0.000 description 4
- 230000007812 deficiency Effects 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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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
Abstract
The invention discloses a distributive independent photovoltaic power generation system and method. The distributive independent power generation system comprises a plurality of independent photovoltaic power generation systems which are connected in parallel, wherein each independent photovoltaic power generation system is connected to a corresponding load, and the independent photovoltaic systems are controlled by an electric energy interaction management system; the electric energy interaction management system comprises a load on-off information acquisition unit and a storage battery electricity quantity information acquisition unit, wherein the load on-off information acquisition unit is used for acquiring on-off information of the loads, and the storage battery electricity quantity information acquisition unit is used for acquiring electricity quantity information of a storage battery in each independent photovoltaic power generation system; and the electric energy interaction management system further comprises a processing control module which is used for carrying out data processing on the on-off information and the electricity quantity information to output a control signal and carrying out on-off control on the inverter in each independent photovoltaic power generation system, so that the electricity quantity of the storage battery in each independent photovoltaic power generation system keeps at a balanced state.
Description
Technical field
The present invention relates to field of solar thermal power generation, particularly relate to a kind of distributed independent photovoltaic generating system and electricity-generating method.
Background technology
Photovoltaic generating system is the electricity generation system directly solar energy being converted to electric energy, and photovoltaic generating system, because reliability is high, long service life, free from environmental pollution, energy Independent Power Generation, is subject to the favor of numerous various user, has vast potential for future development.
Current angle of solar battery system can be applicable to every household, installs photovoltaic battery panel each domestic consumer, and stored by solar power generation and be supplied to low-power load use, the low-power loads such as such as electricity-saving lamp, television set, fan, computer, mini-bar use.
But present photovoltaic generating system is completely independently unit, can not be interconnected, completely isolated each other, independent photovoltaic inverter can not be incorporated into the power networks, can only provide electric power by isolated operation, and the photovoltaic generating system carrying load ability of independent operating is very little, can not with the larger air-conditioning of power and electric machinery load, and it is limited that unique user installs angle of solar battery system energy output, and bringing onto load is very short for running time.
Therefore, prior art has yet to be improved and developed.
Summary of the invention
In view of above-mentioned the deficiencies in the prior art, the object of the present invention is to provide a kind of distributed photovoltaic power generation system and electricity-generating method, be intended to solve the problem that existing photovoltaic generating system output power is low, power-on time is short.
Technical scheme of the present invention is as follows:
A kind of distributed independent photovoltaic generating system, wherein, it comprises some independent photovoltaic generating systems be connected in parallel, and each independent photovoltaic generating system is connected in corresponding load, and described independent photovoltaic generating system is controlled by an interaction management system;
Described interaction management system comprises a load start and stop information acquisition unit and accumulator electric-quantity information acquisition unit, described load start and stop information acquisition unit is for gathering the start and stop information of load, and described accumulator electric-quantity information acquisition unit is for gathering the information about power of the storage battery in each independent photovoltaic generating system; Described interaction management system also comprises a processing and control module, control signal is exported for carrying out data processing to described start and stop information and information about power, on off control is carried out to the inverter in independent photovoltaic generating system, makes the accumulator electric-quantity of each independent photovoltaic generating system keep poised state.
Described distributed independent photovoltaic generating system, wherein, described load is provided with wireless communication apparatus, and described wireless communication apparatus is used for the start and stop information of inductive load, and the start and stop information of load is sent to interaction management system.
Described distributed independent photovoltaic generating system, wherein, described independent photovoltaic generating system also comprises photovoltaic battery panel, controller, described photovoltaic battery panel is used for solar energy to be converted to electric energy, the electrical power storage that described controller is used for photovoltaic battery panel to produce is in storage battery, described controller also for the electrical energy discharge that will store in storage battery to inverter, by inverter, direct current is converted to alternating current for load.
Described distributed independent photovoltaic generating system, wherein, described load is electricity-saving lamp, television set, fan, computer, refrigerator, air-conditioning.
A kind of distributed independent photovoltaic electricity-generating method, wherein, comprises step:
Be connected in parallel by some independent photovoltaic generating systems, each independent photovoltaic generating system is connected in corresponding load, and described independent photovoltaic generating system is controlled by an interaction management system;
Described interaction management system gathers the information about power of the storage battery in the start and stop information of load and each independent photovoltaic generating system, data processing is carried out to described start and stop information and information about power and exports control signal, on off control is carried out to the inverter in independent photovoltaic generating system, makes the accumulator electric-quantity of each independent photovoltaic generating system keep poised state.
Beneficial effect: distributed independent photovoltaic generating system of the present invention and electricity-generating method, independent photovoltaic generating system is connected in parallel, carry out on off control and carry out data processing to accumulator electric-quantity information exporting control signal to the inverter in independent photovoltaic generating system corresponding to load by interaction management system, on off control is carried out to inverter, makes the accumulator electric-quantity of each independent photovoltaic generating system keep poised state.The present invention will independently link together by photovoltaic system, establish stable electrical network, can start high power load, can save again electric energy loss, also make the charge capacity of each independent photovoltaic generating system keep balance.
Accompanying drawing explanation
Fig. 1 is the control chart of the distributed independent photovoltaic generating system of the present invention.
Fig. 2 is the confession electrograph of the distributed independent photovoltaic generating system of the present invention.
Fig. 3 is the structural representation of the independent photovoltaic generating system in the present invention.
Embodiment
The invention provides a kind of distributed independent photovoltaic generating system and electricity-generating method, for making object of the present invention, technical scheme and effect clearly, clearly, the present invention is described in more detail below.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Shown in composition graphs 1 and Fig. 2, Fig. 1 and Fig. 2 is respectively the control chart of distributed independent photovoltaic generating system of the present invention and supplies electrograph, as shown in the figure, described distributed independent photovoltaic generating system comprises: some independent photovoltaic generating systems 100 be connected in parallel, each independent photovoltaic generating system 100 is connected in corresponding load 120, and each independent photovoltaic generating system 100 all carries out control and management by interaction management system 110.
Below each several part of distributed independent photovoltaic generating system of the present invention is described in detail.
Independent photovoltaic generating system in the present invention, as shown in Figure 3, comprise storage battery 103, inverter 104, photovoltaic battery panel 101, controller 102, described photovoltaic battery panel 101 is for being converted to electric energy by solar energy, described controller 102 for electrical power storage that photovoltaic battery panel 101 is produced in storage battery 103, described controller 102 also for will in storage battery 103 store electrical energy discharge to inverter 104, by inverter 104, direct current is converted to alternating current for load 120, the effect of this controller 102 is the operating states controlling whole system, and additives for overcharge protection is played to storage battery 103, the effect of over.Described controller 102 also should possess the function of temperature-compensating, namely a temperature inductor and thermostat unit is provided with, described temperature inductor can sense the temperature of controller, and described thermostat unit can heat controller according to the temperature sensed or lower the temperature controller is in safe temperature.
Interaction management system 110 in the present invention comprises a load start and stop information acquisition unit, for gathering the start and stop information of load, described interaction management system 110 also comprises accumulator electric-quantity information acquisition unit, for gathering the information about power of the storage battery 103 in each independent photovoltaic generating system 100, described interaction management system 110 also comprises a processing and control module, for carrying out data processing to the start and stop information collected and information about power and export control signal, on off control is carried out according to the inverter 104 of described control signal to storage battery 103 correspondence, the accumulator electric-quantity of each independent photovoltaic generating system 100 is made to keep poised state, such as when the load of user does not have not in use, its accumulator electric-quantity is higher, and user be in and working load time, then accumulator electric-quantity is lower, according to this feature, the accumulator electric-quantity information that described interaction management system 110 collects, process is carried out to information about power and exports control signal, control some inverters depositing the low storage battery of electricity corresponding to quit work, namely allow and deposit the low storage battery stopping electric discharge of electricity, make to deposit the high storage battery preferential discharge of electricity, for the startup of some high power loads, described interaction management system 110 preferentially starts by the inverter near this high power load, thus avoid the electric energy loss of long distance power transmission.
Specifically, can be provided with wireless communication apparatus in each load 120, described wireless communication apparatus is used for the start and stop information of inductive load 120, and the start and stop information of load 120 is sent to interaction management system 110.Like this when load 120 starts or shuts down, the start and stop inductor of wireless communication apparatus senses the start and stop message of load, this start and stop information is sent to interaction management system 110 by described wireless communication apparatus, described interaction management system 110 is by after the process of processing and control module, the instruction of start and stop is sent to inverter 104, such as when load 120 starts, start inverter 104, when load 120 is shut down, close inverter 104 or make inverter 104 enter into holding state, thus according to the service condition of load 120, reduce the electric energy loss of inverter 104, saves energy.In addition, even more preferably interaction management system controls the inverter in neighbouring independent photovoltaic generating system 100, thus namely improve control efficiency, can reduce again the waste of electric energy; One delay controller is set in load 120, for the start and stop of delays time to control load 120, when load is opened or close, can not power-off immediately or energising, thus give wireless communication apparatus and interaction management system certain processing time, control inverter start and stop, avoid the problem because electrical network power output deficiency causes power failure, the delay time of delay controller can be set to 2min simultaneously.
Interaction management system 110 in the present invention adopts high-speed CPU microprocessor and high-precision A/D analog to digital converter, a microcomputer data acquisition and monitor control system, can Real-time Collection independent photovoltaic generating system 100 is current fast operating state, thus according to the situation of load 120 and independent photovoltaic generating system 100, each device in independent photovoltaic generating system 100 is regulated, in addition, described interaction management system, can be undertaken managing concentratedly and far distance controlled by multiple photovoltaic system substation.
Inverter 104 in the present invention can adopt sinewave inverter; inverter 104 effect of the present invention the DC voltage that photovoltaic battery panel 101 produces is converted into AC to export; the major requirement of inverter be reliable, efficiency is high, wave distortion is little; power factor (PF) is high; in reliability and restorability, require that inverter should have certain antijamming capability, adaptive capacity to environment, momentary overload capacity and various defencive function.
Based on said system, the present invention also provides a kind of distributed independent photovoltaic electricity-generating method, and it comprises step:
Be connected in parallel by some independent photovoltaic generating systems, each independent photovoltaic generating system is connected in corresponding load, and described independent photovoltaic generating system is controlled by an interaction management system;
Described interaction management system gathers the information about power of the storage battery in the start and stop information of load and each independent photovoltaic generating system, data processing is carried out to described start and stop information and information about power and exports control signal, on off control is carried out to the inverter in independent photovoltaic generating system, makes the accumulator electric-quantity of each independent photovoltaic generating system keep poised state.
In sum, photovoltaic generating system of the present invention and electricity-generating method, to the load start and stop information of the independent photovoltaic generating system of every household and accumulator electric-quantity information be distributed in by radioing to interaction management system, by interaction management system on off control is carried out to the inverter in independent photovoltaic generating system corresponding to load and the inverter corresponding to storage battery according to accumulator electric-quantity information carries out on off control,, make the accumulator electric-quantity of each independent photovoltaic generating system keep poised state.The present invention will independently link together by photovoltaic system, establish stable electrical network, can start high power load, can save again electric energy loss, also make the charge capacity of each independent photovoltaic generating system maintain balance.
Should be understood that, application of the present invention is not limited to above-mentioned citing, for those of ordinary skills, can be improved according to the above description or convert, and all these improve and convert the protection range that all should belong to claims of the present invention.
Claims (4)
1. a distributed independent photovoltaic generating system, it is characterized in that, it comprises some independent photovoltaic generating systems be connected in parallel, and each independent photovoltaic generating system is connected in corresponding load, and described independent photovoltaic generating system is controlled by an interaction management system;
Described interaction management system comprises a load start and stop information acquisition unit and accumulator electric-quantity information acquisition unit, described load start and stop information acquisition unit is for gathering the start and stop information of load, and described accumulator electric-quantity information acquisition unit is for gathering the information about power of the storage battery in each independent photovoltaic generating system; Described interaction management system also comprises a processing and control module, control signal is exported for carrying out data processing to described start and stop information and information about power, on off control is carried out to the inverter in independent photovoltaic generating system, makes the accumulator electric-quantity of each independent photovoltaic generating system keep poised state;
Described load is provided with wireless communication apparatus, and described wireless communication apparatus is used for the start and stop information of inductive load, and the start and stop information of load is sent to interaction management system;
Described interaction management system controls the inverter in neighbouring independent photovoltaic generating system, arranges a delay controller, for the start and stop of delays time to control load in described load;
Described interaction management system adopts high-speed CPU microprocessor and high-precision A/D analog to digital converter, is a microcomputer data acquisition and monitor control system.
2. distributed independent photovoltaic generating system according to claim 1, it is characterized in that, described independent photovoltaic generating system also comprises photovoltaic battery panel, controller, described photovoltaic battery panel is used for solar energy to be converted to electric energy, the electrical power storage that described controller is used for photovoltaic battery panel to produce is in storage battery, described controller also for the electrical energy discharge that will store in storage battery to inverter, by inverter, direct current is converted to alternating current for load.
3. distributed independent photovoltaic generating system according to claim 1, is characterized in that, described load is electricity-saving lamp, television set, fan, computer, refrigerator, air-conditioning.
4. an electricity-generating method for distributed independent photovoltaic generating system as claimed in claim 1, is characterized in that, comprise step:
Be connected in parallel by some independent photovoltaic generating systems, each independent photovoltaic generating system is connected in corresponding load, and described independent photovoltaic generating system is controlled by an interaction management system;
Described interaction management system gathers the information about power of the storage battery in the start and stop information of load and each independent photovoltaic generating system, data processing is carried out to described start and stop information and information about power and exports control signal, on off control is carried out to the inverter in independent photovoltaic generating system, makes the accumulator electric-quantity of each independent photovoltaic generating system keep poised state.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104348244A (en) * | 2013-07-26 | 2015-02-11 | 国电新能源技术研究院 | Intelligent photovoltaic distribution type generating system |
| CN104426472A (en) * | 2013-08-19 | 2015-03-18 | 天津永明新能源科技有限公司 | Intelligent photovoltaic power generation system innovative application mode |
| CN104699015A (en) * | 2013-12-06 | 2015-06-10 | 珠海格力电器股份有限公司 | Distributed power generation based air-conditioning monitoring system and air conditioning system applying same |
| CN104079239A (en) * | 2014-06-07 | 2014-10-01 | 张祈泰 | Multi-combination device of large-scale solar photovoltaic off-grid power generation system |
| CN104615094B (en) * | 2014-11-24 | 2018-01-02 | 国网辽宁省电力有限公司锦州供电公司 | City level high-density multiple spot distributed photovoltaic cluster monitoring method |
| CN105162197B (en) * | 2015-09-09 | 2018-06-15 | 北京无线电测量研究所 | The electric power system and method for a kind of boundary layer wind-profile radar |
| CN107171358A (en) * | 2017-05-17 | 2017-09-15 | 欧贝黎新能源科技股份有限公司 | A kind of distributed photovoltaic power generation method |
| CN107086655A (en) * | 2017-05-18 | 2017-08-22 | 北京昶远科技有限公司 | A kind of twin screw solar energy unmanned plane energy supplyystem |
| CN108365638B (en) * | 2018-05-04 | 2023-06-16 | 西南科技大学 | Energy micro-grid distributed power control system based on wireless sensor network |
| CN111464111B (en) * | 2020-05-08 | 2021-05-04 | 深圳市拓瑞新能源科技有限公司 | Solar power generation intelligent control system |
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| CN2914445Y (en) * | 2006-06-19 | 2007-06-20 | 新疆新能源研究所 | Combined type triphase solar energy photovoltaic network-combining generating plant |
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