CN116526229A - Connector for photovoltaic power generation lifting cabin - Google Patents
Connector for photovoltaic power generation lifting cabin Download PDFInfo
- Publication number
- CN116526229A CN116526229A CN202310585483.5A CN202310585483A CN116526229A CN 116526229 A CN116526229 A CN 116526229A CN 202310585483 A CN202310585483 A CN 202310585483A CN 116526229 A CN116526229 A CN 116526229A
- Authority
- CN
- China
- Prior art keywords
- power generation
- connector
- photovoltaic power
- power
- wiring terminal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010248 power generation Methods 0.000 title claims abstract description 45
- 230000009466 transformation Effects 0.000 claims description 21
- 239000007788 liquid Substances 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/70—Structural association with built-in electrical component with built-in switch
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
-
- 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
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention belongs to the technical field of photovoltaic power generation, and particularly relates to a connector for a photovoltaic power generation lifting cabin, which is used for solving the problem of electric energy loss of photovoltaic power generation at night. The invention can achieve the purposes of saving energy, cutting off faults and prolonging the service life of equipment, when faults occur between the low-voltage outlet side of the transformer and the circuit breaker, the whole circuit can be monitored and protected through the detection of the connector to the current, and the whole range can be protected.
Description
Technical Field
The invention belongs to the technical field of photovoltaic power generation, and particularly relates to a connector for a photovoltaic power generation lifting cabin.
Background
The estimated installed capacity of the power supply in 2025 is 29.5 hundred million kilowatts, the installed ratio of clean energy is increased to 57.5% in 2025 from 41.9% in 2019, and the installed capacity of the coal power supply is reduced to 37.3%, so that the function of the power supply is changed from the base load type power supply to the regulated power supply.
The photovoltaic power generation mainly adopts sunshine to generate power in daytime, does not generate generated energy at night, and if the power generation side and the power transformation side of the whole power station are not cut off, the electric energy stored in the power transformation side can flow back to the power generation side at night, and a series of electric energy losses such as equipment loss, line loss, instrument loss and the like are generated, so that the great energy waste is caused. At present, when the power generation side at night does not generate power any more, the anti-islanding device in the power generation side inversion system cannot detect the generated power, power transmission from the power generation side to the power transformation side can be automatically cut off, power loss is reduced, but the connecting cable is still in a charged state, and power loss can still be generated, so that the situation is a technical pain point which is urgently needed to be solved by the industry.
Disclosure of Invention
The invention aims to solve the technical problems, and provides a connector for a photovoltaic power generation lifting cabin, which can effectively reduce electric quantity loss when a photovoltaic power station does not generate power, so as to achieve the purpose of saving energy. Meanwhile, the problem of fault removal between the boost cabins from the power generation side to the power transformation side can be solved by the scheme. By applying the technical scheme, the purposes of saving energy, cutting faults and prolonging the service life of equipment can be achieved.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the connector is a sealing device with conductive liquid inside, and is connected between a power generation side and a power transformation side of the photovoltaic power generation lifting cabin;
the connector is provided with a micro switch, and two feelers of the micro switch extend into the connector and are immersed in the conductive liquid.
Further, the left end and the right end of the connector are respectively provided with a power generation side wiring terminal and a power transformation side wiring terminal which are connected with the power generation side and the power transformation side.
Further, the connector is arranged inside the lifting seat, an external wiring terminal is arranged on the lifting seat, and the micro switch is electrically connected with the external wiring terminal.
Further, the top of rising seat sets up the manhole.
The invention can achieve the purposes of saving energy, cutting off faults and prolonging the service life of equipment through the connector.
When faults occur between the low-voltage outlet side of the transformer and the circuit breaker, the whole circuit can be monitored and protected through the detection of the connector on the current, and the whole range can be protected. Meanwhile, the connector is of a fully-sealed design scheme, is not influenced by environmental factors, and is wider in application range.
Drawings
Fig. 1: the invention discloses a structure schematic diagram of a connector for a photovoltaic power generation lifting cabin.
In the figure: 1. a transformer; 2. a lifting seat; 3. a conductive liquid; 4. a connector; 5. a fixed bracket I; 6. a fixed bracket II; 7. a micro-switch; 8. antenna I; 9. feeler II; 10. a signal line; 11. an external connection terminal; 12. a power generation-side connection terminal; 13. a transformer-side connecting terminal; 14. copper bars of the inverter; 15. copper bars of the transformer; 16. a manhole; 17. and (3) a cable.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1, a connector 4 is connected inside a lifting seat 2 through a fixing support I5 and a fixing support II 6, the lifting seat 2 is welded on the side wall of a transformer 1, a power generation side wiring terminal 12 and a power transformation side wiring terminal 13 of the connector 4 are connected with a power generation side inverter copper bar 14 and a power transformation side transformer copper bar 15 through bolts, a micro switch 7 is arranged on the upper portion of the connector 4, an antenna I8 and an antenna II 9 of the micro switch 7 extend into the connector 4 and are immersed in a conductive liquid 3, an external wiring terminal 11 is arranged at the top of the lifting seat 2, signals of the micro switch 7 are transmitted to the external wiring terminal 11 through a signal wire 10, an overhaul hole 16 is formed at the top of the lifting seat 2 and used for later overhaul and maintenance, and a cover plate is arranged on the overhaul hole 16.
Description of the functionality
According to the characteristics of photovoltaic power generation, the photovoltaic pole plate generates power in the daytime, the power is converted into alternating current through the inverter, the electric energy flows into the transformer through the connector, and the transformer converts low voltage into high voltage and then is integrated into a power grid.
The technical point of the scheme is an integral technical scheme, and the key technical point is a connector.
A connector: the connector 4 is a sealing device, the inside is provided with a conductive liquid 3, the left end and the right end of the connector 4 are respectively provided with a power generation side wiring terminal 12 and a power transformation side wiring terminal 13, and the top is provided with a micro switch 7. The antenna 8 and the antenna 9 of the micro switch 7 extend into the inside of the connector 4 and are immersed in the conductive liquid 3. The conductive liquid 3 is the existing acid-base salt conductive liquid, and can be solution with good conductivity.
Working principle of energy saving and fault removal:
1. when the power generation side starts to generate power in the daytime, current flows from the power generation side to the power transformation side (namely, the step-up transformer side), namely, current flows from the power generation side wiring terminal 12 of the connector 4, at this time, electrons of the internal conductive liquid 3 of the connector 4 are orderly arranged (when no current flows in, the electrons flow from the power generation side to the power transformation side (namely, from right to left), the flowing speed is in direct proportion to the current, and along with the flowing of the electrons, the electric energy is transmitted from the right side of the connector to the left side of the connector, so that the purpose of conducting the electric energy is achieved.
2. When faults such as short circuit occur on the power generation side, large fault current can be generated on the power generation side instantly and far exceeds a normal current value, at the moment, electrons of the conductive liquid 3 begin to flow abnormally and rapidly, the feeler 8 and the feeler 9 of the micro switch 7 detect abnormal states of the electrons, signals are transmitted to the micro switch 7, normally open contacts of the micro switch 7 are closed, the fault signals are transmitted to the external wiring terminal 11 through the signal wire 10, the signals are uploaded to the high-voltage and low-voltage switches through the external wiring terminal 11, and the high-voltage and low-voltage switches are controlled to disconnect the power generation side from the power transformation side, so that the purpose of cutting faults on the power generation side is achieved. Compared with the prior circuit breaker which cannot effectively protect low-voltage overload, the full-range protection can be performed.
3. When the power generation side does not generate power any more at night, the anti-islanding device in the power generation side inversion system can not detect the generated power, and power transmission from the power generation side to the power transformation side can be automatically cut off. At this point, electrons in the conductive liquid will no longer flow and the terminal 12 will be free of electrical energy. Further, the connection cable between the power generation side and the power transformation side will not be electrified.
The scheme can achieve the purpose of saving the electric energy loss of the connecting cable 17 between the power generation side and the power transformation side under the condition that power is not generated at night.
Taking the new photovoltaic installed capacity 87.41GW of 2022, wherein the centralized 36.3GW is taken as an example, according to the calculation of each common 3.125MW power transformation device, the power transformation device 11616 is newly added. The low voltage is considered to be 0.8kV and needs 2X 800mm for each phase 2 The average distance of the cable is calculated as 100 m. Each cable loss calculation:
ΔP＝3I 2 R/1000R＝ρ×L/S
R＝0.0172×100/1600＝0.001075Ω
the line loss is Δp=3×22552× 0.001075/1000=16.4 kW
The non-electricity generating time period per day is calculated according to 12 hours:
each day can save electric energy Δw=16.4x12= 196.8 kw.h
The electric energy Δw= 196.8 ×11616= 2286028.8 kw.h is saved daily in the whole country
Through the calculation, the technical scheme has considerable economic benefit for saving electric energy when not generating electricity at night.
Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present invention.
Claims (4)
1. A connector for a photovoltaic power generation lifting cabin, which is characterized in that: the connector (4) is a sealing device with a conductive liquid (3) inside and is connected between a power generation side and a power transformation side of the photovoltaic power generation lifting cabin;
the connector (4) is provided with a micro switch (7), and two feelers of the micro switch (7) extend into the connector (4) and are immersed in the conductive liquid (3).
2. The connector for a photovoltaic power generation lifting cabin according to claim 1, wherein: the left end and the right end of the connector (4) are respectively provided with a power generation side wiring terminal (12) and a power transformation side wiring terminal (13) which are connected with the power generation side and the power transformation side.
3. The connector for a photovoltaic power generation lifting cabin according to claim 1, wherein: the connector (4) is arranged inside the lifting seat (2), an external wiring terminal (11) is arranged on the lifting seat (2), and the micro switch (7) is electrically connected with the external wiring terminal (11).
4. A connector for a photovoltaic power generation lifting cabin according to claim 3, characterized in that: and the top of the lifting seat (2) is provided with a manhole (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310585483.5A CN116526229A (en) | 2023-05-23 | 2023-05-23 | Connector for photovoltaic power generation lifting cabin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310585483.5A CN116526229A (en) | 2023-05-23 | 2023-05-23 | Connector for photovoltaic power generation lifting cabin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116526229A true CN116526229A (en) | 2023-08-01 |
Family
ID=87399483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310585483.5A Pending CN116526229A (en) | 2023-05-23 | 2023-05-23 | Connector for photovoltaic power generation lifting cabin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116526229A (en) |
-
2023
- 2023-05-23 CN CN202310585483.5A patent/CN116526229A/en active Pending
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