CN103683466B - A kind of emergent direct-furnish based on existing photovoltaic controller is from net photovoltaic power supply system - Google Patents
A kind of emergent direct-furnish based on existing photovoltaic controller is from net photovoltaic power supply system Download PDFInfo
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
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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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Abstract
The invention belongs to photovoltaic generation power supply technique field, be specifically related to a kind of emergent direct-furnish based on existing photovoltaic controller from net photovoltaic power supply system.Technical solution of the present invention is communicated with sets up the emergent direct power supply power path of photovoltaic electric power start and the emergent direct power supply power path of photovoltaic electric power shutdown and photovoltaic electric power to shut down electric power storage electrical path of meeting an urgent need, to directly power for user's emergency luminaire and batteries, making photovoltaic system when having caused electricity to use because of fault is out of service, the electric power of photovoltaic generation can be made full use of; Meanwhile, be batteries electric power storage by current limliting and threshold circuit, greatly reduce the damage because the abnormal accumulators of photovoltaic system causes.When system possesses the work electricity of setting, automatically system power supply is transferred to by emergency service by bypass threshold control switch, user is enable to make full use of photovoltaic generating system timely and effectively in the environment of auto-control, maximally utilise photovoltaic electric power, improve the effective utilization of photovoltaic system, increase and extend probability and the time of photovoltaic utilization, for user provides more convenient, more effective photovoltaic generation electric power system.
Description
Technical field
The invention belongs to photovoltaic generation power supply technique field, be specifically related to a kind of emergent direct-furnish based on existing photovoltaic controller from net photovoltaic power supply system.
Background technology
At present, a large amount of residents is used for outlying areas without electricity from net photovoltaic generation electric power system, has made contribution for solving basic living electricity consumption without electric resident.But prior art and system, as shown in Figure 1, its each circuit module and storage battery interrelated centered by photovoltaic controller, any part all can form operation by influential system by problem.When system causes shutdown not power because of service condition (as storage battery loose contact) and system hardware fault and parts damages (as the protective circuit of system, photovoltaic controller and inverter circuit autoprotection or fault etc.); system there will be the situation that can not power; and this situation gets more and more; to this, user can only wait for that manufacturer carrys out field service.Due to be remote, weather conditions are poor, cause outlying areas without electricity manufacturer to carry out the inconvenience of field service, often need a period of time, are difficult to on-call maintenance; During this period, because system is in stopped status, assembly institute electricity cannot be utilized to run charging and power supply, even if photovoltaic module has generating, also waste, can not utilize, delay the power supply phase, to the difficulty that user causes electricity to use; Meanwhile, because system is in stopped status, overlong time can cause damage by accumulators, reduces system useful life.
Summary of the invention
In order to overcome the above-mentioned shortcomings and deficiencies that prior art and product exist, make photovoltaic system when having caused electricity to use because of fault is out of service, electric power when can generate electricity can be made full use of, at least solve the emergency service problems such as the electricity consumption of illumination and DC electric apparatus, the present invention proposes a kind of emergent direct-furnish based on existing photovoltaic controller from net photovoltaic power supply system, comprise photovoltaic electrification component, photovoltaic controller, inverter circuit, batteries, charging bus, electric power storage power supply buses, photovoltaic power supply bus, AC load connectivity port, system controller, bypass threshold control switch, emergency service bus, emergency electric power load connectivity port, automatically controlled and the manual switch of emergency bus, charging and electric discharge allotment switch, DC load connectivity port, current limliting and protective circuit, system bus, direct current parallelled circuit module and current limliting and threshold circuit form, it is characterized in that:
Photovoltaic electrification component connects bypass threshold control switch and connects emergency electric power load connectivity port through emergency service bus and current limliting and protective circuit, forms start and to meet an urgent need direct power supply power path;
Photovoltaic electrification component connects the automatically controlled and manual switch of emergency bus and connects emergency electric power load connectivity port through emergency service bus and current limliting with protective circuit, forms and shuts down direct power supply power path of meeting an urgent need;
Photovoltaic electrification component connects the automatically controlled and manual switch of emergency bus and connects batteries through emergency service bus and current limliting with threshold circuit, forms and shuts down electric power storage electrical path of meeting an urgent need;
Photovoltaic electrification component connects bypass threshold control switch and is connected in series with photovoltaic controller, photovoltaic power supply bus, direct current parallelled circuit module, inverter circuit, AC load connectivity port in turn, forms photovoltaic Alternating Current Power Supply path;
Photovoltaic electrification component connects bypass threshold control switch and allocates switch in turn with photovoltaic controller, the bus that charge, charging and discharging and connects batteries and be connected in series, formation photovoltaic electric power electric power storage supply path;
Batteries by charge and discharge allotment switch and electric power storage power supply buses connect DC load connectivity port, form electric power storage direct current supply path;
Batteries, by charge and discharge allotment switch and electric power storage power supply buses and direct current parallelled circuit connect inverter circuit and connect AC load connectivity port by inverter circuit, forms electric power storage Alternating Current Power Supply path;
Batteries is by charging and discharge allotment switch and electric power storage power supply buses and direct current parallelled circuit welding system controller, and construction system supply path, for system cloud gray model provides electric energy;
System controller connects the automatically controlled and manual switch of bypass threshold control switch, emergency bus and charging and electric discharge allotment switch respectively by system bus, construction system control link;
Its system control method is: when system is out of service, the automatically controlled and manual switch of emergency bus is normal closure state; During the normal startup optimization of system, first control to disconnect the automatically controlled and manual switch of emergency bus on emergency service bus; When the power of photovoltaic electrification component is less than the minimum power of system Start-up and operating performance, automatically the power supply of photovoltaic electrification component is conducting to emergency service bus by bypass threshold control switch and the emergency service of to carry out to emergency electric power load connectivity port starting shooting through current limliting and protective circuit emergency service and system operation situation; When the electric power that photovoltaic electrification component supply received by bypass threshold control switch is greater than the power threshold of system Start-up and operating performance of setting, conducting connects the power line of photovoltaic controller, system normal power supply; When system jam is stopped power supply or is out of service, because part and whole circuit module all quit work, system can not be powered and controlling functions lost efficacy, and now and manual switch automatically controlled by emergency bus automatically and is manually conducting to emergency service bus and also carries out shutdown emergency service and photovoltaic electric power direct-furnish through current limliting and threshold circuit to batteries through current limliting and protective circuit to emergency electric power load connectivity port simultaneously; When system is normally run, system controller, by controlling charging and electric discharge allotment switch enables batteries realize controlledly carrying out discharge and recharge process, reduces the impaired chance of storage battery, prolonging service life of battery.
A kind of emergent direct-furnish based on existing photovoltaic controller that the present invention proposes is from net photovoltaic power supply system, described automatically controlled and manual switch is the automatically controlled of normal closed condition and manual switch circuit module, be connected with system controller by system bus, form controlled switch control link.
The present invention is by bypass threshold control switch, be communicated with photovoltaic electric power to meet an urgent need direct power supply power path, to directly power for user's emergency luminaire and batteries, make photovoltaic system when having caused electricity to use because of fault is out of service, the electric power of photovoltaic generation can be made full use of, simultaneously, be batteries electric power storage by current limliting and threshold circuit, greatly reduce the damage because the abnormal accumulators of photovoltaic system causes, user is enable to make full use of photovoltaic generating system timely and effectively in the environment of auto-control, maximally utilise photovoltaic electric power, improve the effective utilization of photovoltaic system, increase and extend probability and the time of photovoltaic utilization, for user provides more convenient, more effective photovoltaic generation electric power system.
Accompanying drawing explanation
Fig. 1 is existing in net photovoltaic generation electric power system schematic block diagram;
Fig. 2 is that a kind of emergent direct-furnish based on existing photovoltaic controller is from net photovoltaic power supply system principle schematic block diagram.
Embodiment
As examples of implementation, by reference to the accompanying drawings a kind of emergent direct-furnish based on existing photovoltaic controller is described from net photovoltaic power supply system, but technology of the present invention and scheme are not limited to the content that the present embodiment provides.
Fig. 1 illustrates existing from net photovoltaic generation electric power system schematic block diagram, as shown in Figure 1, prior art and system, its each circuit module and storage battery interrelated centered by photovoltaic controller, any part all can form operation by influential system by problem.
Figure 2 shows a kind of emergent direct-furnish based on existing photovoltaic controller from net photovoltaic power supply system principle schematic block diagram, as shown in Figure 2, a kind of emergent direct-furnish based on existing photovoltaic controller is from net photovoltaic power supply system, comprise photovoltaic electrification component (1), photovoltaic controller (2), inverter circuit (3), batteries (4), charging bus (5), electric power storage power supply buses (6), photovoltaic power supply bus (7), AC load connectivity port (8), system controller (9), bypass threshold control switch (10), emergency service bus (11), emergency electric power load connectivity port (12), automatically controlled and the manual switch (13a) of emergency bus, charging and electric discharge allotment switch (13b), DC load connectivity port (14), current limliting and protective circuit (15), system bus (16), direct current parallelled circuit module (17) and current limliting and threshold circuit (18) form, it is characterized in that:
Photovoltaic electrification component (1) connects bypass threshold control switch (10) and connects emergency electric power load connectivity port (12) through emergency service bus (11) and current limliting and protective circuit (15), forms start and to meet an urgent need direct power supply power path;
Photovoltaic electrification component (1) connects the automatically controlled and manual switch (13a) of emergency bus and connects emergency electric power load connectivity port (12) through emergency service bus (11) and current limliting with protective circuit (15), forms and shuts down direct power supply power path of meeting an urgent need;
Photovoltaic electrification component (1) connects the automatically controlled and manual switch (13a) of emergency bus and connects batteries (4) through emergency service bus (11) and current limliting with threshold circuit (18), forms and shuts down electric power storage electrical path of meeting an urgent need;
Photovoltaic electrification component (1) connects bypass threshold control switch (10) and is connected in series with photovoltaic controller (2), photovoltaic power supply bus (7), direct current parallelled circuit module (17), inverter circuit (3), AC load connectivity port (8) in turn, forms photovoltaic Alternating Current Power Supply path;
Photovoltaic electrification component (1) connect bypass threshold control switch (10) and in turn with photovoltaic controller (2), the bus (5) that charge, charge and discharge and allocate switch (13b) and connect batteries (4) and be connected in series, formation photovoltaic electric power electric power storage supply path;
Batteries (4) by charge and discharge allotment switch (13b) and electric power storage power supply buses (6) connect DC load connectivity port (14), form electric power storage direct current supply path;
Batteries (4) is by charge and discharge allotment switch (13b) and electric power storage power supply buses (6) and direct current parallelled circuit (17) connect inverter circuit (3) and connect AC load connectivity port (8) by inverter circuit (3), formation electric power storage Alternating Current Power Supply path;
Batteries (4) is by charging and discharge allotment switch (13b) and electric power storage power supply buses (6) and direct current parallelled circuit (17) welding system controller (9), construction system supply path, for system cloud gray model provides electric energy;
System controller (9) connects the automatically controlled and manual switch (13a) of bypass threshold control switch (10), emergency bus and charging and electric discharge allotment switch (13b) respectively by system bus (16), construction system control link;
Its system control method is: when system is out of service, the automatically controlled and manual switch (13a) of emergency bus is normal closure state; During the normal startup optimization of system, first control to disconnect the automatically controlled and manual switch (13a) of emergency bus on emergency service bus (11); When the power of photovoltaic electrification component (1) is less than the minimum power of system Start-up and operating performance, automatically the power supply of photovoltaic electrification component (1) is conducting to emergency service bus (11) by bypass threshold control switch (10) and the emergency service of to carry out to emergency electric power load connectivity port (12) starting shooting through current limliting and protective circuit (15) emergency service and system operation situation; Bypass threshold control switch (10) receive electric power that photovoltaic electrification component (1) supplies be greater than the power threshold of system Start-up and operating performance of setting time, conducting connects the power line of photovoltaic controller (2), system normal power supply; When system jam is stopped power supply or is out of service, because part and whole circuit module all quit work, system can not be powered and controlling functions lost efficacy, and now and manual switch (13a) automatically controlled by emergency bus automatically and is manually conducting to emergency service bus (11) and also carries out shutdown emergency service and photovoltaic electric power direct-furnish through current limliting and threshold circuit (18) to batteries (4) through current limliting and protective circuit (15) to emergency electric power load connectivity port (12) simultaneously; When system is normally run, system controller (9) is by controlling charging and electric discharge allotment switch (13b) makes batteries (4) can realize controlledly carrying out discharge and recharge process, reduce the impaired chance of storage battery, prolonging service life of battery.
A kind of emergent direct-furnish based on existing photovoltaic controller that the present invention proposes is from net photovoltaic power supply system, described automatically controlled and manual switch (13a) is the automatically controlled of normal closed condition and manual switch circuit module, be connected with system controller (9) by system bus (16), form controlled switch control link.
Technical solution of the present invention is communicated with sets up the emergent direct power supply power path of photovoltaic electric power start and the emergent direct power supply power path of photovoltaic electric power shutdown and photovoltaic electric power to shut down electric power storage electrical path of meeting an urgent need, to be directly user's emergency luminaire and batteries (4) power supply, making photovoltaic system when having caused electricity to use because of fault is out of service, the electric power of photovoltaic generation can be made full use of; Meanwhile, be batteries (4) electric power storage by current limliting and threshold circuit (18), greatly reduce the damage because the abnormal accumulators of photovoltaic system causes.When system possesses the work electricity of setting, automatically system power supply is transferred to by emergency service by bypass threshold control switch (10), user is enable to make full use of photovoltaic generating system timely and effectively in the environment of auto-control, maximally utilise photovoltaic electric power, improve the effective utilization of photovoltaic system, increase and extend probability and the time of photovoltaic utilization, for user provides more convenient, more effective photovoltaic generation electric power system.
Claims (2)
1. one kind based on the emergent direct-furnish of existing photovoltaic controller from net photovoltaic power supply system, comprise photovoltaic electrification component (1), photovoltaic controller (2), inverter circuit (3), batteries (4), charging bus (5), electric power storage power supply buses (6), photovoltaic power supply bus (7), AC load connectivity port (8), system controller (9), bypass threshold control switch (10), emergency service bus (11), emergency electric power load connectivity port (12), automatically controlled and the manual switch (13a) of emergency bus, charging and electric discharge allotment switch (13b), DC load connectivity port (14), current limliting and protective circuit (15), system bus (16), direct current parallelled circuit module (17) and current limliting and threshold circuit (18) form, it is characterized in that:
Photovoltaic electrification component (1) connects bypass threshold control switch (10) and connects emergency electric power load connectivity port (12) through emergency service bus (11) and current limliting and protective circuit (15), forms start and to meet an urgent need direct power supply power path;
Photovoltaic electrification component (1) connects the automatically controlled and manual switch (13a) of emergency bus and connects emergency electric power load connectivity port (12) through emergency service bus (11) and current limliting with protective circuit (15), forms and shuts down direct power supply power path of meeting an urgent need;
Photovoltaic electrification component (1) connects the automatically controlled and manual switch (13a) of emergency bus and connects batteries (4) through emergency service bus (11) and current limliting with threshold circuit (18), forms and shuts down electric power storage electrical path of meeting an urgent need;
Photovoltaic electrification component (1) connects bypass threshold control switch (10) and is connected in series with photovoltaic controller (2), photovoltaic power supply bus (7), direct current parallelled circuit module (17), inverter circuit (3), AC load connectivity port (8) in turn, forms photovoltaic Alternating Current Power Supply path;
Photovoltaic electrification component (1) connect bypass threshold control switch (10) and in turn with photovoltaic controller (2), the bus (5) that charge, charge and discharge and allocate switch (13b) and connect batteries (4) and be connected in series, formation photovoltaic electric power electric power storage supply path;
Batteries (4) by charge and discharge allotment switch (13b) and electric power storage power supply buses (6) connect DC load connectivity port (14), form electric power storage direct current supply path;
Batteries (4) is by charge and discharge allotment switch (13b) and electric power storage power supply buses (6) and direct current parallelled circuit (17) connect inverter circuit (3) and connect AC load connectivity port (8) by inverter circuit (3), formation electric power storage Alternating Current Power Supply path;
Batteries (4) is by charging and discharge allotment switch (13b) and electric power storage power supply buses (6) and direct current parallelled circuit (17) welding system controller (9), construction system supply path, for system cloud gray model provides electric energy;
System controller (9) connects the automatically controlled and manual switch (13a) of bypass threshold control switch (10), emergency bus and charging and electric discharge allotment switch (13b) respectively by system bus (16), construction system control link;
Its system control method is: when system is out of service, the automatically controlled and manual switch (13a) of emergency bus is normal closure state; During the normal startup optimization of system, first control to disconnect the automatically controlled and manual switch (13a) of emergency bus on emergency service bus (11); When the power of photovoltaic electrification component (1) is less than the minimum power of system startup optimization, automatically the power supply of photovoltaic electrification component (1) is conducting to emergency service bus (11) by bypass threshold control switch (10) and carries out the emergency service of power supply and system operation situation online through current limliting and protective circuit (15) to emergency electric power load connectivity port (12); Bypass threshold control switch (10) receive electric power that photovoltaic electrification component (1) supplies be greater than the power threshold of system startup optimization of setting time, conducting connects the power line of photovoltaic controller (2), system normal power supply; When system jam is stopped power supply or is out of service, because part and all circuit module all to quit work and system can not be powered and controlling functions lost efficacy, now and manual switch (13a) automatically controlled by emergency bus automatically and is manually conducting to emergency service bus (11) and also carries out that off-line powers through current limliting and threshold circuit (18) to batteries (4) through current limliting and protective circuit (15) to emergency electric power load connectivity port (12) is simultaneously photovoltaic electric power direct-furnish; When system is normally run, system controller (9) is by controlling charging and electric discharge allotment switch (13b) makes batteries (4) can realize controlledly carrying out discharge and recharge process, reduce the impaired chance of storage battery, prolonging service life of battery.
2. according to claim 1 one kind based on the emergent direct-furnish of existing photovoltaic controller from net photovoltaic power supply system, described automatically controlled and manual switch (13a) is the automatically controlled of normal closed condition and manual switch circuit module, be connected with system controller (9) by system bus (16), form controlled switch control link.
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| CN104009496B (en) * | 2014-06-12 | 2016-01-06 | 国网上海市电力公司 | A kind of dual threshold for micro-capacitance sensor anti-backflow device judges switching circuit |
| CN104124690A (en) * | 2014-06-28 | 2014-10-29 | 广东元景能源股份有限公司 | Intelligent household photovoltaic energy storage system |
| WO2019107807A1 (en) * | 2017-11-28 | 2019-06-06 | 엘에스산전 주식회사 | Energy storage system |
| CN110707679B (en) * | 2019-11-22 | 2021-05-14 | 中国联合网络通信集团有限公司 | Voltage control method and photovoltaic power supply device and system |
| CN111181237A (en) * | 2020-01-07 | 2020-05-19 | 中国联合网络通信集团有限公司 | Photovoltaic control method, photovoltaic power supply device and system |
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| US8227937B2 (en) * | 2008-07-02 | 2012-07-24 | Nnw Ventures, Llc | Uninterruptible power supplies, solar power kits for uninterruptible power supplies and related methods |
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Effective date of registration: 20160830 Address after: 100160, 326, North block, building 2, building 1, East Road, Fengtai District Automobile Museum, Beijing, China Patentee after: Beijing potential new energy technology Co., Ltd. Address before: 100102 Chaoyang District, South Lake Road, No. 8, North building, room 2, room, No. 301 Patentee before: Zhou Xiwei |
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Addressee: Beijing potential new energy technology Co., Ltd. Document name: Notification of Passing Examination on Formalities |
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Effective date of registration: 20190611 Address after: 100025 A218, 2nd Floor, Building A, Shifoying Xili 12, Chaoyang District, Beijing Patentee after: Beijing Tianqi Hongyuan New Energy Technology Co., Ltd. Address before: 100160 North Block 326, No. 2 Building, East Road, Automobile Museum, Fengtai District, Beijing Patentee before: Beijing potential new energy technology Co., Ltd. |
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| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Beijing potential new energy technology Co., Ltd. Document name: Notification of Passing Examination on Formalities |