CN212751806U - Distributed photovoltaic power generation anti-islanding protection device - Google Patents
Distributed photovoltaic power generation anti-islanding protection device Download PDFInfo
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- CN212751806U CN212751806U CN202021564559.4U CN202021564559U CN212751806U CN 212751806 U CN212751806 U CN 212751806U CN 202021564559 U CN202021564559 U CN 202021564559U CN 212751806 U CN212751806 U CN 212751806U
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- 238000010248 power generation Methods 0.000 title claims abstract description 58
- 230000005540 biological transmission Effects 0.000 claims abstract description 48
- 230000005611 electricity Effects 0.000 claims abstract description 16
- 230000000694 effects Effects 0.000 abstract description 16
- 238000012423 maintenance Methods 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000009434 installation Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000006467 substitution reaction Methods 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
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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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
- Y04S10/123—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation the energy generation units being or involving renewable energy sources
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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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y04S20/242—Home appliances
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Abstract
The utility model relates to a prevent island protection technical field specifically is a distributing type photovoltaic power generation prevents island protection device, including photovoltaic power generation equipment, one side fixedly connected with transmission of electricity switch of photovoltaic power generation equipment, photovoltaic power generation equipment's output electricity is connected with photovoltaic inverter, photovoltaic inverter's output electricity is connected with the transformer, the output electricity of transformer is connected with the block terminal. The utility model has the advantages that: through the matched arrangement of the power transmission switch, the photovoltaic inverter, the transformer, the distribution box, the user electrical appliance, the incoming call detector and the signal transmitter, the problem that the existing distributed photovoltaic power generation has island effect and harms the life safety of power maintenance personnel is solved; through the cooperation setting of transmission of electricity switch, photovoltaic inverter, transformer, block terminal, user with electrical apparatus, incoming telegram detector and signal transmitter, can be quick effectual solution island effect problem, solved the current inconvenient condition of preventing that island effect device cost is higher to operate.
Description
Technical Field
The utility model relates to a prevent island protection technical field, especially a distributed photovoltaic power generation prevents island protection device.
Background
Photovoltaic power generation is a technology of directly converting light energy into electric energy by using the photovoltaic effect of a semiconductor interface. The solar energy power generation system mainly comprises a solar panel (assembly), a controller and an inverter, and the main components are electronic components. The solar cells are connected in series and then are packaged and protected to form a large-area solar cell module, and then the photovoltaic power generation device is formed by matching with components such as a power controller and the like. The distributed photovoltaic power generation has important significance for optimizing the structure energy structure, promoting energy conservation and emission reduction and realizing sustainable development of the economic department. With the large-scale access of the large-scale distributed photovoltaic power generation to the power grid, the influences on relay protection configuration, system short-circuit current level, power distribution automation system function application, power quality, field operation safety and the like of the power distribution network can be highlighted. Furthermore, distributed generation is an uncontrollable source with respect to the distribution grid. When the power distribution network is in grid-connected operation with the power distribution network, the power quality, relay protection, power benefit and the like of the power distribution network can be greatly influenced.
The existing distributed photovoltaic power generation has the following defects:
1. the island effect problem exists in the actual operation process, and the life safety of power maintenance personnel is easily damaged;
2. the existing device for solving the island effect has high cost and inconvenient operation.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's shortcoming, provide a distributing type photovoltaic power generation prevents island protection device.
The purpose of the utility model is realized through the following technical scheme: a distributed photovoltaic power generation anti-islanding protection device comprises photovoltaic power generation equipment, wherein a power transmission switch is fixedly connected to one side of the photovoltaic power generation equipment;
the output end of the photovoltaic power generation equipment is electrically connected with a photovoltaic inverter, the photovoltaic power generation equipment is electrically connected with the photovoltaic inverter through a power transmission line, the power transmission line of the photovoltaic power generation equipment comprises a power transmission line and a feedback line, the output end of the photovoltaic inverter is electrically connected with a transformer, and the output end of the transformer is electrically connected with a distribution box;
the output electricity of block terminal is connected with the user and uses electrical apparatus, one side parallel connection that the user used electrical apparatus has the incoming telegram detector, one side fixedly connected with signal transmitter of incoming telegram detector, the switch that transmits electricity includes switch and signal receiver, the switch that transmits electricity passes through signal receiver and feedback line and is connected with the signal transmitter electricity of incoming telegram detector.
Optionally, the transformer is a step-up transformer, and the distribution box is a user distribution box.
Optionally, the user electrical appliance is a load electrical appliance, and the user electrical appliance is connected in parallel with the incoming call detector.
Optionally, the incoming call detector comprises a standby power supply and an RS-485 single chip microcomputer, and a signal emitter of the incoming call detector is electrically connected with the power transmission switch through a feedback line.
The utility model has the advantages of it is following:
1. the distributed photovoltaic power generation anti-islanding protection device is characterized in that a power transmission switch is fixedly connected to one side of photovoltaic power generation equipment, the photovoltaic power generation equipment is in a normal state, the power transmission switch is opened, electric energy is inverted through a photovoltaic inverter, boosted through a transformer and distributed into user electrical equipment through a distribution box, the channel resistance of a call detector is very small and smaller than ohm at the moment, when the mains supply is powered off, the channel resistance of the call detector is very large, the call detector can detect the mains supply power off, a power-off signal is sent to a signal receiver of the power transmission switch through an RS-485 single chip microcomputer through a signal transmitter through a feedback line, the power transmission switch is immediately closed, the photovoltaic power generation equipment stops transmitting power to a power grid, the islanding effect is solved, the life safety of power maintenance personnel is effectively protected, and the islanding, Photovoltaic inverter, transformer, block terminal, user use electrical apparatus, incoming telegram detector and signal transmitter's cooperation setting, can effectively solve the island problem, solved current distributed photovoltaic power generation and have the island endanger the condition of electric power maintainer life safety.
2. The distributed photovoltaic power generation anti-islanding protection device is characterized in that a power transmission switch is fixedly connected to one side of photovoltaic power generation equipment, the power transmission switch is opened when the photovoltaic power generation equipment is in a normal state, electric energy is inverted through a photovoltaic inverter, boosted through a transformer and distributed into user electrical equipment through a distribution box, the channel resistance of a call detector is very small and smaller than ohm at the moment, when commercial power is cut off, the channel resistance of the call detector is very large, the call detector can detect the commercial power cut-off, a signal of the power cut-off is sent to a signal receiver of the power transmission switch through a signal transmitter through an RS-485 single chip microcomputer through a feedback line, the power transmission switch is immediately closed, the photovoltaic power generation equipment stops transmitting power to a power grid, the call detector is intelligent equipment for detecting whether the commercial power exists or not, safety and, the wiring is convenient, be fit for various indoor environment and use, and the reaction is rapid, and installation cost is lower, and convenient operation is simple, can cooperate feedback line and the convenient solution island effect problem of transmission of electricity switch, through transmission of electricity switch, photovoltaic inverter, transformer, block terminal, user with electrical apparatus, incoming telegram detector and signal transmitter's cooperation setting, can be quick effectual solution island effect problem, solved the current higher inconvenient condition of operation of anti-island effect device cost.
Drawings
Fig. 1 is a schematic structural view of a first viewing angle of the present invention;
fig. 2 is a schematic structural view of a second viewing angle of the present invention;
fig. 3 is a schematic structural view of the present invention from above.
In the figure: the system comprises 1-photovoltaic power generation equipment, 2-power transmission switches, 3-photovoltaic inverters, 4-transformers, 5-distribution boxes, 6-user electrical appliances, 7-incoming electricity detectors and 8-signal transmitters.
Detailed Description
The invention will be further described with reference to the accompanying drawings, but the scope of the invention is not limited to the following description.
As shown in fig. 1-3, a distributed photovoltaic power generation anti-islanding protection device includes a photovoltaic power generation device 1, and a power transmission switch 2 is fixedly connected to one side of the photovoltaic power generation device 1; the output end of the photovoltaic power generation equipment 1 is electrically connected with a photovoltaic inverter 3, the photovoltaic power generation equipment 1 is electrically connected with the photovoltaic inverter 3 through a power transmission line, the power transmission line of the photovoltaic power generation equipment 1 comprises a power transmission line and a feedback line, the output end of the photovoltaic inverter 3 is electrically connected with a transformer 4, and the output end of the transformer 4 is electrically connected with a distribution box 5; the output end of the distribution box 5 is electrically connected with a user electrical appliance 6, one side of the user electrical appliance 6 is connected with a call detector 7 in parallel, one side of the call detector 7 is fixedly connected with a signal transmitter 8, the power transmission switch 2 comprises a switch and a signal receiver, and the power transmission switch 2 is electrically connected with the signal transmitter 8 of the call detector 7 through the signal receiver and a feedback circuit.
As an optimal technical solution of the utility model: when the mains supply is powered off, the channel resistance of the incoming call detector 7 is very large, the incoming call detector 7 can detect the mains supply power failure, and sends a power failure signal to the signal receiver of the power transmission switch 2 through the signal transmitter 8 through the RS-485 single chip microcomputer, the power transmission switch 2 is immediately closed, the photovoltaic power generation equipment 1 stops transmitting power to the power grid, the transformer 4 is a step-up transformer, the distribution box 5 is a user distribution box, the user electrical equipment 6 is a load electrical equipment, the user electrical equipment 6 is connected with the incoming call detector 7 in parallel, the incoming call detector 7 comprises a standby power supply and the RS-485 single chip microcomputer, the incoming call detector 7 is an intelligent device for detecting whether the mains supply exists or not, and the device is safe, reliable, small in size, only has a fist size, convenient to wire connection, suitable for use in various indoor environments, rapid in response, low in installation cost, convenient and, the incoming call detector 7 has three channels, the working voltage is 220V, and the signal emitter 8 of the incoming call detector 7 is electrically connected with the power transmission switch 2 through a feedback line.
The working process of the utility model is as follows: under normal state, the photovoltaic power generation equipment 1 is opened, the electric energy is inverted through the photovoltaic inverter 3, the voltage is boosted through the transformer 4, the electric energy is distributed to the user electrical appliance 6 through the distribution box 5, the channel resistance of the incoming call detector 7 is very small and less than 60 ohms at the moment, when the commercial power is cut off, the channel resistance of the incoming call detector 7 is very large, the incoming call detector 7 can detect the commercial power cut-off, the signal of the power cut-off is sent to the signal receiver of the power transmission switch 2 through the RS-485 single chip microcomputer through the signal transmitter 8 through the feedback line, the power transmission switch 2 is immediately closed, the photovoltaic power generation equipment 1 stops transmitting power to the power grid, and the problem of the island effect is.
In summary, when the distributed photovoltaic power generation anti-islanding protection device is used, a power transmission switch 2 is fixedly connected to one side of a photovoltaic power generation device 1, the power transmission switch 2 is turned on when the photovoltaic power generation device 1 is in a normal state, electric energy is inverted by a photovoltaic inverter 3, boosted by a transformer 4 and distributed to a user electrical appliance 6 by a distribution box 5, at this time, the channel resistance of an incoming call detector 7 is very small and less than 60 ohms, when commercial power is cut off, the channel resistance of the incoming call detector 7 is very large, the incoming call detector 7 can detect the commercial power cut-off, and sends a power cut-off signal to a signal receiver of the power transmission switch 2 through a feedback line by an RS-485 single chip microcomputer through a signal emitter 8, the power transmission switch 2 is immediately turned off, and the photovoltaic power generation device 1 stops transmitting power to a power grid, the life safety of power maintenance personnel is effectively protected, the problem of island effect can be effectively solved through the matched arrangement of the power transmission switch 2, the photovoltaic inverter 3, the transformer 4, the distribution box 5, the user electrical appliance 6, the incoming call detector 7 and the signal emitter 8, and the problem that the existing distributed photovoltaic power generation has island effect and harms the life safety of the power maintenance personnel is solved; by fixedly connecting a power transmission switch 2 on one side of a photovoltaic power generation device 1, the photovoltaic power generation device 1 is in a normal state, the power transmission switch 2 is opened, electric energy is inverted by a photovoltaic inverter 3, is boosted by a transformer 4 and is distributed into a user electrical appliance 6 by a distribution box 5, the channel resistance of a call detector 7 is very small and is less than 60 ohms, when commercial power is cut off, the channel resistance of the call detector 7 is very large, the call detector 7 can detect the commercial power cut-off, and sends a power-off signal to a signal receiver of the power transmission switch 2 through a feedback line by a signal transmitter 8 through an RS-485 single chip microcomputer, the power transmission switch 2 is immediately closed, the photovoltaic power generation device 1 stops transmitting power to a power grid, the call detector 7 is an intelligent device for detecting whether the commercial power exists or not, and is safe and reliable, has a, the wiring is convenient, be fit for various indoor environment and use, and the reaction is rapid, installation cost is lower, the operation is convenient simple, can cooperate feedback line and the convenient solution island effect problem of transmission of electricity switch 2, through transmission of electricity switch 2, photovoltaic inverter 3, transformer 4, block terminal 5, user with electrical apparatus 6, incoming telegram detector 7 and signal transmitter 8's cooperation setting, can be quick effectual solution island effect problem, the current higher inconvenient condition of operation of anti-island effect device cost has been solved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The utility model provides a distributed photovoltaic power generation prevents isolated island protection device which characterized in that: the photovoltaic power generation system comprises photovoltaic power generation equipment (1), wherein a power transmission switch (2) is fixedly connected to one side of the photovoltaic power generation equipment (1);
the output end of the photovoltaic power generation equipment (1) is electrically connected with a photovoltaic inverter (3), the photovoltaic power generation equipment (1) is electrically connected with the photovoltaic inverter (3) through a power transmission line, the power transmission line of the photovoltaic power generation equipment (1) comprises a power transmission line and a feedback line, the output end of the photovoltaic inverter (3) is electrically connected with a transformer (4), and the output end of the transformer (4) is electrically connected with a distribution box (5);
the output electricity of block terminal (5) is connected with the user and uses electrical apparatus (6), the user is connected with electric detector (7) with one side of electrical apparatus (6) and hookup, one side fixedly connected with signal transmitter (8) of electric detector (7), power transmission switch (2) are including switch and signal receiver, power transmission switch (2) are connected with signal transmitter (8) electricity of electric detector (7) through signal receiver and feedback line.
2. The distributed photovoltaic power generation anti-islanding protection device according to claim 1, wherein: the transformer (4) is a step-up transformer, and the distribution box (5) is a user distribution box.
3. The distributed photovoltaic power generation anti-islanding protection device according to claim 1, wherein: the user electrical appliance (6) is a load electrical appliance, and the user electrical appliance (6) is connected with the incoming call detector (7) in parallel.
4. The distributed photovoltaic power generation anti-islanding protection device according to claim 1, wherein: the incoming call detector (7) comprises a standby power supply and an RS-485 single chip microcomputer, and a signal emitter (8) of the incoming call detector (7) is electrically connected with the power transmission switch (2) through a feedback circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021564559.4U CN212751806U (en) | 2020-07-31 | 2020-07-31 | Distributed photovoltaic power generation anti-islanding protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021564559.4U CN212751806U (en) | 2020-07-31 | 2020-07-31 | Distributed photovoltaic power generation anti-islanding protection device |
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| Publication Number | Publication Date |
|---|---|
| CN212751806U true CN212751806U (en) | 2021-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021564559.4U Expired - Fee Related CN212751806U (en) | 2020-07-31 | 2020-07-31 | Distributed photovoltaic power generation anti-islanding protection device |
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| CN (1) | CN212751806U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118100291A (en) * | 2024-04-19 | 2024-05-28 | 辽宁凯普睿电力能源有限公司 | Anti-islanding protection device for grid-connected power generation of new energy power plant |
-
2020
- 2020-07-31 CN CN202021564559.4U patent/CN212751806U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118100291A (en) * | 2024-04-19 | 2024-05-28 | 辽宁凯普睿电力能源有限公司 | Anti-islanding protection device for grid-connected power generation of new energy power plant |
| CN118100291B (en) * | 2024-04-19 | 2024-07-02 | 辽宁凯普睿电力能源有限公司 | Anti-islanding protection device for grid-connected power generation of new energy power plant |
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Granted publication date: 20210319 |