CN103683466A - Emergent direct supply off-grid photovoltaic power supply system based on existing photovoltaic controller - Google Patents
Emergent direct supply off-grid photovoltaic power supply system based on existing photovoltaic controller Download PDFInfo
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- CN103683466A CN103683466A CN201210341210.8A CN201210341210A CN103683466A CN 103683466 A CN103683466 A CN 103683466A CN 201210341210 A CN201210341210 A CN 201210341210A CN 103683466 A CN103683466 A CN 103683466A
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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
Abstract
The invention belongs to the technical field of photovoltaic power generation and supply and particularly relates to an emergent direct supply off-grid photovoltaic power supply system based on an existing photovoltaic controller. According to the technical scheme of the invention, a photovoltaic power power-on emergent direct supply power path, a photovoltaic power power-off emergent direct supply power path and a photovoltaic power power-off emergent power storage power path are set up in a communicating way, and power is directly supplied to a user emergent lamp and a storage battery pack, so that the power of photovoltaic power generation can be fully utilized when a photovoltaic system stops running due to a failure to cause that power cannot be used even though power exists in the photovoltaic system; meanwhile, power is stored in the storage battery pack through a throttling and threshold circuit, and damage to storage batteries due to the abnormality of the photovoltaic system is greatly reduced. When set working power exists in the system, emergent power supply is automatically converted to system power supply by a bypass threshold control switch, so that users can timely, effectively and sufficiently utilize the photovoltaic power generation system and utilize the photovoltaic power to an utmost degree in an automatically-regulated environment. The use efficiency of the photovoltaic system is improved, photovoltaic utilizing rate is increased, photovoltaic utilizing time is prolonged, and the photovoltaic power generation and supply system which is convenient and efficient is provided to the users.
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 for outlying areas without electricity, have been made contribution for solving basic living electricity consumption without electric resident from net photovoltaic generation electric power system.But prior art and system, as shown in Figure 1, its each circuit module and storage battery are interrelated centered by photovoltaic controller, and any part all can affect system by problem and form operation.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 is 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, cannot utilize the electricity operation charging of assembly institute and power supply, even if photovoltaic module has generating, also waste, can not utilize, delay the power supply phase, the difficulty that causes electricity to use to user; Meanwhile, because system is in stopped status, overlong time can accumulators cause damage, reduces system useful life.
Summary of the invention
The above-mentioned shortcomings and deficiencies that exist in order to overcome prior art and product, make photovoltaic system when having caused electricity to use because of fault is out of service, can make full use of the electric power in the time of generating electricity, at least solve the emergency service problems such as 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, comprising: 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 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, and 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 with protective circuit (15), forms the start 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 emergency electric power load connectivity port (12) through emergency service bus (11) and current limliting with protective circuit (15), forms and shuts down the 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 the 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) connects bypass threshold control switch (10) and connects batteries (4) with photovoltaic controller (2), charging bus (5), charging and electric discharge allotment switch (13b) in turn and be connected in series, formation photovoltaic electric power electric power storage supply path;
Batteries (4), by charging and discharge allotment switch (13b) and electric power storage power supply buses (6) connect DC load connectivity port (14), forms electric power storage direct current 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) 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), and construction system supply path, for system operation provides electric energy;
System controller (9) by system bus (16) connect respectively bypass threshold control switch (10), emergency bus is automatically controlled and manual switch (13a) and charging and electric discharge allotment switch (13b), 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; System normally starts when operation, first controls the automatically controlled and manual switch (13a) of the emergency bus disconnecting 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, by bypass threshold control switch (10), automatically the power supply of photovoltaic electrification component (1) is conducting to emergency service bus (11) and to emergency electric power load port (12) emergency service of starting shooting, is the emergency service of system operation situation through current limliting and protective circuit (15); When bypass threshold control switch (10) is received electric power that photovoltaic electrification component (1) supplies with and is greater than the power threshold of system Start-up and operating performance of setting, conducting connects the power line of photovoltaic controller (2), system normal power supply; In system, break down and stop power supply or when out of service, because of part and all circuit module all the system of quitting work can not power and control disabler, now automatically and to be manually conducting to emergency service bus (11) and to emergency electric power load port (12), also through current limliting and threshold circuit (18), to batteries (4), to shut down emergency service through current limliting and protective circuit (15) be simultaneously photovoltaic electric power direct-furnish to and manual switch (13a) automatically controlled by emergency bus; When system is normally moved, system controller (9) charges by control and the allotment switch (13b) that discharges makes batteries (4) can realize the controlled process that discharges and recharges, and 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 automatically controlled and manual switch circuit module that manual switch (13a) is normal closed condition, by system bus (16), be connected with system controller (9), form controlled switch control link.
The present invention is by bypass threshold control switch, be communicated with the emergent direct power supply power path of photovoltaic electric power, it will be directly user's emergency luminaire and batteries (4) power supply, make photovoltaic system when having caused electricity to use because of fault is out of service, can make full use of the electric power of photovoltaic generation, simultaneously, by current limliting and threshold circuit (18), it is batteries (4) electric power storage, greatly reduce the damage causing due to the abnormal accumulators of photovoltaic system, make user can in the environment of auto-control, make full use of timely and effectively photovoltaic generating system, maximally utilise photovoltaic electric power, improved the effective utilization of photovoltaic system, probability and time that photovoltaic utilizes have been increased and have extended, 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, still, technology of the present invention and scheme are not limited to the content that the present embodiment provides.
Accompanying drawing 1 has provided 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 are interrelated centered by photovoltaic controller, and any part all can affect system by problem and form operation.
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 with protective circuit (15), forms the start 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 emergency electric power load connectivity port (12) through emergency service bus (11) and current limliting with protective circuit (15), forms and shuts down the 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 the 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) connects bypass threshold control switch (10) and connects batteries (4) with photovoltaic controller (2), charging bus (5), charging and electric discharge allotment switch (13b) in turn and be connected in series, formation photovoltaic electric power electric power storage supply path;
Batteries (4), by charging and discharge allotment switch (13b) and electric power storage power supply buses (6) connect DC load connectivity port (14), forms electric power storage direct current 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) 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), and construction system supply path, for system operation provides electric energy;
System controller (9) by system bus (16) connect respectively bypass threshold control switch (10), emergency bus is automatically controlled and manual switch (13a) and charging and electric discharge allotment switch (13b), 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; System normally starts when operation, first controls the automatically controlled and manual switch (13a) of the emergency bus disconnecting 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, by bypass threshold control switch (10), automatically the power supply of photovoltaic electrification component (1) is conducting to emergency service bus (11) and to emergency electric power load port (12) emergency service of starting shooting, is the emergency service of system operation situation through current limliting and protective circuit (15); When bypass threshold control switch (10) is received electric power that photovoltaic electrification component (1) supplies with and is greater than the power threshold of system Start-up and operating performance of setting, conducting connects the power line of photovoltaic controller (2), system normal power supply; In system, break down and stop power supply or when out of service, because of part and all circuit module all the system of quitting work can not power and control disabler, now automatically and to be manually conducting to emergency service bus (11) and to emergency electric power load port (12), also through current limliting and threshold circuit (18), to batteries (4), to shut down emergency service through current limliting and protective circuit (15) be simultaneously photovoltaic electric power direct-furnish to and manual switch (13a) automatically controlled by emergency bus; When system is normally moved, system controller (9) charges by control and the allotment switch (13b) that discharges makes batteries (4) can realize the controlled process that discharges and recharges, and 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 automatically controlled and manual switch circuit module that manual switch (13a) is normal closed condition, by system bus (16), be connected with system controller (9), 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 emergent electric power storage electrical path, it will be directly user's emergency luminaire and batteries (4) power supply, make photovoltaic system when having caused electricity to use because of fault is out of service, can make full use of the electric power of photovoltaic generation; Meanwhile, by current limliting and threshold circuit (18), be batteries (4) electric power storage, greatly reduce the damage causing due to the abnormal accumulators of photovoltaic system.When system possesses the work electric weight of setting, by bypass threshold control switch (10), automatically by emergency service, transfer system power supply to, make user can in the environment of auto-control, make full use of timely and effectively photovoltaic generating system, maximally utilise photovoltaic electric power, improved the effective utilization of photovoltaic system, probability and time that photovoltaic utilizes have been increased and have extended, for user provides more convenient, more effective photovoltaic generation electric power system.
Claims (2)
1. the 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), exchange the negative load port (8) that connects, 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 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 with protective circuit (15), forms the start 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 emergency electric power load connectivity port (12) through emergency service bus (11) and current limliting with protective circuit (15), forms and shuts down the 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 the 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) connects bypass threshold control switch (10) and connects batteries (4) with photovoltaic controller (2), charging bus (5), charging and electric discharge allotment switch (13b) in turn and be connected in series, formation photovoltaic electric power electric power storage supply path;
Batteries (4), by charging and discharge allotment switch (13b) and electric power storage power supply buses (6) connect DC load connectivity port (14), forms electric power storage direct current 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) 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), and construction system supply path, for system operation provides electric energy;
System controller (9) by system bus (16) connect respectively bypass threshold control switch (10), emergency bus is automatically controlled and manual switch (13a) and charging and electric discharge allotment switch (13b), 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; System normally starts when operation, first controls the automatically controlled and manual switch (13a) of the emergency bus disconnecting on emergency service bus (11); When the power of photovoltaic electrification component (1) is less than system and starts the minimum power of operation, by bypass threshold control switch (10), automatically the power supply of photovoltaic electrification component (1) being conducting to emergency service bus (11) and to emergency electric power load port (12), being carried out powering online with protective circuit (15) through current limliting is the emergency service of system operation situation; When bypass threshold control switch (10) is received system that electric power that photovoltaic electrification component (1) supplies with is greater than setting and started the power threshold of operation, conducting connects the power line of photovoltaic controller (2), system normal power supply; In system, break down and stop power supply or when out of service, because of part and all circuit module all the system of quitting work can not power and control disabler, now automatically and to be manually conducting to emergency service bus (11) and to emergency electric power load port (12), also through current limliting and threshold circuit (18), to batteries (4), to carry out that off-line powers through current limliting and protective circuit (15) be simultaneously photovoltaic electric power direct-furnish to and manual switch (13a) automatically controlled by emergency bus; When system is normally moved, system controller (9) charges by control and the allotment switch (13b) that discharges makes batteries (4) can realize the controlled process that discharges and recharges, and reduces the impaired chance of storage battery, prolonging service life of battery.
According to one kind of claim 1 the emergent direct-furnish based on existing photovoltaic controller from net photovoltaic power supply system, described automatically controlled and automatically controlled and manual switch circuit module that manual switch (13a) is normal closed condition, by system bus (16), be connected with system controller (9), form controlled switch control link.
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| CN201210341210.8A CN103683466B (en) | 2012-09-17 | 2012-09-17 | A kind of emergent direct-furnish based on existing photovoltaic controller is from net photovoltaic power supply system |
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| CN201210341210.8A CN103683466B (en) | 2012-09-17 | 2012-09-17 | A kind of emergent direct-furnish based on existing photovoltaic controller is from net photovoltaic power supply system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104009496A (en) * | 2014-06-12 | 2014-08-27 | 国网上海市电力公司 | Dual-threshold judgment switching circuit for micro grid backflow protection device |
| 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 |
| CN110707679A (en) * | 2019-11-22 | 2020-01-17 | 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 |
| CN111406352A (en) * | 2017-11-28 | 2020-07-10 | Ls电气株式会社 | Energy storage system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104009496A (en) * | 2014-06-12 | 2014-08-27 | 国网上海市电力公司 | Dual-threshold judgment switching circuit for micro grid backflow protection device |
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| 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 |
| CN111406352A (en) * | 2017-11-28 | 2020-07-10 | Ls电气株式会社 | Energy storage system |
| CN111406352B (en) * | 2017-11-28 | 2023-11-10 | Ls电气株式会社 | energy storage system |
| CN110707679A (en) * | 2019-11-22 | 2020-01-17 | 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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| CN103683466B (en) | 2015-08-12 |
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