CN214626408U - Energy storage system for offshore wind turbine generator system debugging - Google Patents
Energy storage system for offshore wind turbine generator system debugging Download PDFInfo
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- CN214626408U CN214626408U CN202120104938.3U CN202120104938U CN214626408U CN 214626408 U CN214626408 U CN 214626408U CN 202120104938 U CN202120104938 U CN 202120104938U CN 214626408 U CN214626408 U CN 214626408U
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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
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The utility model provides an energy storage system for offshore wind turbine generator system debugging, including box energy storage battery system, box unsteady flow boost system, marine booster station cubical switchboard, current collecting line submarine cable, the offshore wind turbine generator system of debugged. The box type variable-current boosting system mainly comprises a converter and a boosting transformer, wherein the converter can provide reactive power to compensate the charging power of the submarine cable and convert the direct current of the storage battery into alternating current; the step-up transformer can step up the low-voltage alternating current to the alternating current consistent with the voltage grade of the offshore booster station switch cabinet. The offshore booster station switch cabinet is used for being connected into the wind turbine generator of each loop and being connected into the energy storage debugging device.
Description
Technical Field
The utility model relates to an offshore wind power generation field, concretely relates to energy storage system for offshore wind turbine generator system debugging.
Background
At present, before the wind turbine generator is connected to the grid, the electric energy is often required to be reversely transmitted to an offshore booster station through a high-voltage main submarine cable by means of an onshore power grid, and is transmitted to each offshore wind turbine generator through a current collection line submarine cable after being subjected to voltage reduction by a main transformer. When the onshore power grid is separated from the offshore wind farm, the source of self-electricity needed by the debugging power supply of the wind turbine generator and the communication system, the yaw motor, the dehumidifier, the heater, the cooling fan and other equipment becomes a big problem.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in overcoming current offshore wind farm after breaking away from land electric wire netting, the power supply difficulty of wind turbine generator system when debugging, fortune dimension to an energy storage system for offshore wind turbine generator system debugging is provided.
The utility model adopts the technical proposal that: an energy storage system for offshore wind turbine commissioning, the energy storage system comprising: the system comprises a box type energy storage battery system, a box type variable-current boosting system, a switch cabinet of an offshore boosting station, a current collecting line submarine cable and a debugged offshore wind turbine generator; the box type energy storage battery system and the box type variable-current boosting system are respectively arranged in respective containers; the box type energy storage battery system is provided with an energy storage battery and a confluence cabinet; the box type variable-current boosting system is provided with a local transformer and a converter.
On the basis of adopting above-mentioned technical scheme, the utility model discloses still can adopt following further technical scheme, or to these further technical scheme combined use:
the equipment of the energy storage battery system is designed in an integrated manner by adopting a container, the equipment of the box-type energy storage battery system is arranged in the same container, battery clusters are positioned at two sides in the container, a patrol channel is reserved in the middle, a temperature-sensitive and smoke-sensitive detector is arranged above the battery clusters, a junction cabinet and a battery control cabinet are arranged in the container of the box-type energy storage battery system, and the battery clusters are connected in parallel with the junction cabinet in the container; the energy storage battery of the energy storage battery system can provide active power for debugging to the debugged wind turbine generator and can also store electric energy generated by the debugged wind turbine generator during normal operation.
The battery cluster of the energy storage battery system is a lithium iron phosphate battery, and the battery core-battery module-battery cluster-battery system is distinct in modularization level, clear in structure and complete in function.
The capacity of the energy storage battery system at least meets the maximum debugging electric energy loss of a loop where the wind turbine generator is located.
The box type variable flow boosting system is designed in an integrated mode through a container, and is a container. The converter and the on-site transformer are arranged in the same container and are respectively arranged in the two sub-cabins; and a converter in the container of the converter and booster system is connected with a confluence cabinet in the container of the energy storage battery system by a direct current cable.
Furthermore, the container of a box type variable-current boosting system at least comprises a converter and an on-site transformer. Furthermore, each group of energy storage batteries is provided with a junction station and a plurality of battery clusters, the battery clusters in the group are connected in parallel into the junction box of the group, and the junction box of each group of energy storage batteries is in one-to-one correspondence with the converter.
Each converter is connected with the low-voltage side of the on-site transformer in the same container through a low-voltage cable. The on-site transformer is connected to a switch cabinet of the offshore booster station through a return cable.
Further, the offshore switch cabinet may be a main transformer incoming line cabinet of the offshore booster station, or may be another switch cabinet of the offshore booster station that does not operate during debugging. Further, the original connecting cables and plugs of the main transformer incoming line cabinet or other switch cabinets which are not operated are replaced by the cables for connecting the local transformers and the newly manufactured plug terminals.
The energy storage system for offshore wind turbine generator debugging is used for debugging the wind turbine generator of each loop one by one through a wind turbine generator incoming line cabinet and a corresponding current collection line submarine cable through breaking control of a wind turbine generator incoming line cabinet breaker.
The container used by the box type energy storage battery system and the box type variable-current boosting system is provided with an automatic control and safety guarantee system such as an electric system, a temperature control system, a fire alarm system, a door control system, a lighting system, a safety escape system, an emergency system, a fire fighting system and the like.
The utility model provides an energy storage system for offshore wind turbine generator system debugging can still not possess the condition of being incorporated into the power networks or when breaking away from with land electric wire netting because of the trouble at offshore wind farm, debugs wind turbine generator system. On one hand, the offshore wind power plant can be quickly put into normal power generation operation after meeting grid-connected conditions, the grid-connected time is shortened, and the economic benefit is improved; on the other hand, the normal operation and maintenance requirements of the wind turbine generator after the offshore wind farm is disconnected from the onshore power grid can be met.
The utility model discloses technical scheme has following advantage:
1. the utility model provides an used debugging equipment of energy storage system for offshore wind turbine debugging compares in traditional diesel generating set debugging scheme when debugging for a long time, and the economic nature is more excellent. Because the energy storage system is provided with the converter, the direct current generated by the storage battery is converted into alternating current required by debugging, and meanwhile, the reactive power for compensating the charging power of the submarine cable can be generated, so that a parallel compensation reactor does not need to be additionally arranged. In addition, the energy storage system can not only generate electric energy required by debugging of the wind turbine generator, but also store the electric energy of the wind turbine generator during normal power generation, so that no extra fuel consumption is caused, the environment is not polluted, the cost is lower and the economy is quite obvious particularly in the long-time debugging process.
2. The utility model provides an energy storage system for offshore wind turbine generator system debugs wind turbine generator system on each section cubical switchboard generating line of debugging, only needs 1 inlet wire cubical switchboard. This energy storage system passes through the cable access existing main change inlet wire cabinet of marine booster station, or the cubical switchboard that does not operate during the debugging, is transmitted the electric energy to the wind turbine generator system of being debugged by the current collection circuit submarine cable again, need not newly increase the cubical switchboard for the debugging, and the debugging system feasibility is higher. Further, the utility model discloses an energy storage battery system container, conversion system container of stepping up can place at marine booster station roof layer under the condition that the space allows, need not newly increase the inside cabin of marine booster station, have realized the make full use of platform area to construction cost has been reduced.
Drawings
Fig. 1 is an electrical wiring diagram of an energy storage system for offshore wind turbine commissioning according to an embodiment of the present invention;
fig. 2 is a top view of the box-type energy storage battery system of the present invention;
fig. 3 is a top view of the box-type variable flow boosting system of the present invention.
Description of reference numerals:
1-box type energy storage battery system; 2-a current transformer; 3-low voltage cable connecting the converter with low voltage side of the on-site transformer; 4-in-situ transformer; 5-box type variable flow boosting system; 6-cable connecting the low voltage side of the local transformer with the switch cabinet; 7-offshore booster station switch cabinet circuit breaker (main transformer incoming line cabinet or switch cabinet not operating during debugging) for accessing the energy storage device; 8-offshore booster station switch cabinet; 9-breaker of inlet cabinet of wind turbine generator; 10-current collecting line submarine cable; 11-a wind turbine generator set boost high-voltage side switch; 12-wind turbine generator; 13-a battery cluster; 14-a combiner cabinet; 15-battery control cabinet; 16-communication cabinet.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
An energy storage system for offshore wind turbine, please refer to fig. 1 to 3. Fig. 1 shows an implementation form of the present invention, which includes: the system comprises a box type energy storage battery system 1 (1 container in total), a box type variable-current boosting system 5 (containing four converters 2 and one on-site transformer 4, 1 container in total), and a maritime booster station switch cabinet 8.
The box-type energy storage battery system is provided with an energy storage battery and a confluence cabinet. A plurality of energy storage batteries are connected in series to form a battery cluster 13, a plurality of battery clusters 13 are arranged in the box type energy storage battery system 1, the battery clusters 13 are positioned on two sides in the container, and a patrol channel is reserved in the middle.
Each group of energy storage batteries is provided with a junction station and a plurality of battery clusters, the battery clusters in the group are connected in parallel into the junction cabinet of the group, and the junction cabinet of each group of energy storage batteries is in one-to-one correspondence with the converter 2.
The converter 2 and the on-site transformer 4 are arranged in the same container and are respectively arranged in two sub-chambers; the converter 1 in the container of the current-converting and voltage-boosting system is connected with the confluence cabinet in the container of the energy storage battery system by a direct-current cable.
Each converter 2 is connected with the low-voltage side of an on-site transformer 4 in the same container by a low-voltage return cable. The on-site transformer 4 is connected to a switch cabinet 8 of the offshore booster station through a return cable 6.
The operation mode of the utility model is specifically explained as follows:
(1) when the wind turbine generator needs to be debugged before grid connection or when an onshore power grid is separated from an offshore wind farm, an alternating current power supply is needed to supply power to equipment such as a communication system, a yaw motor, a dehumidifier, a heater, a cooling fan and the like in the wind turbine generator. The battery cluster 13 generates direct current, and the direct current is inverted into alternating current by the converter 2 and then is boosted by the on-site transformer 4. The electric energy is connected into a switch cabinet 8 of the offshore booster station for connecting the energy storage device through a cable 6. In consideration of the economic efficiency, the space size and other reasons, the capacity of the box-type energy storage battery system 1 generally only considers debugging or maintaining all the wind turbines of one loop at a time. Therefore, the non-debugged wind turbine generator inlet cabinet internal circuit breaker needs to be disconnected, and only the wind turbine generator inlet cabinet internal circuit breaker 9 of the debugged loop and the boost high-voltage side switch 11 of the debugged wind turbine generator in the debugged loop are closed, so that single-loop debugging is realized. Typically each wind turbine 12 requires 12 to 24 hours of commissioning.
(2) After the wind turbine generator 12 in a loop is debugged, the wind turbine generator 12 is connected to the grid one by one. At the moment, the electric quantity of the battery cluster 13 is greatly consumed, the wind turbine generator 12 which is debugged needs to normally operate to generate electricity, the electric energy is transmitted to the offshore booster station through the current collection circuit submarine cable 10, the voltage is reduced through the local transformer 4 and rectified through the converter 2, the battery cluster 13 is reversely charged, and meanwhile various parameters of the grid-connected wind turbine generator 12 are tested.
(3) And after all the wind turbines 12 of a certain loop are debugged, disconnecting the boost high-voltage side switch 11 of the wind turbine of the loop and the circuit breaker 9 in the incoming line cabinet of the wind turbine of the loop. And debugging the wind turbine generator 12 of the next loop according to the method (1).
The above-mentioned embodiments are only examples for clearly illustrating the present invention, and do not limit the present invention. The present invention may be subject to various changes and modifications by those skilled in the art. Any modification, equivalent replacement, obvious change and the like which are within the principle and the theoretical scope of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. An energy storage system for offshore wind turbine commissioning, the energy storage system comprising: the system comprises a box type energy storage battery system, a box type variable-current boosting system, a switch cabinet of an offshore boosting station, a current collecting line submarine cable and a debugged offshore wind turbine generator; the box type energy storage battery system and the box type variable-current boosting system are respectively arranged in respective containers; the box type energy storage battery system is provided with an energy storage battery and a confluence cabinet; the box type variable-current boosting system is provided with a local transformer and a converter.
2. The energy storage system for offshore wind turbine debugging of claim 1, wherein the equipment of the energy storage battery system is designed integrally by adopting a container, the equipment of the box-type energy storage battery system is arranged in the same container, a junction cabinet and a battery control cabinet are arranged in the container of the box-type energy storage battery system, and the battery clusters of the box-type energy storage battery system are connected in parallel to the junction cabinet in the container;
the energy storage battery of the energy storage battery system can provide active power for debugging to the debugged wind turbine generator and can also store electric energy generated by the debugged wind turbine generator during normal operation.
3. An energy storage system for offshore wind energy plant commissioning of claim 1 wherein: the capacity of the energy storage battery system at least meets the maximum debugging electric energy loss of a loop where the wind turbine generator is located.
4. An energy storage system for offshore wind energy plant commissioning of claim 1 wherein: the box type current-converting and voltage-boosting system adopts the container integrated design, and a current transformer and a local transformer are arranged in the same container; and a converter in the container of the converter and booster system is connected with a confluence cabinet in the container of the energy storage battery system by a direct current cable.
5. An energy storage system for offshore wind energy plant commissioning of claim 4 wherein: the capacity of the converter at least meets the maximum charging power of a loop where the wind turbine generator is located.
6. An energy storage system for offshore wind energy plant commissioning of claim 1 wherein: the container used by the box type energy storage battery system and the box type variable-current boosting system is provided with an electric system, a temperature control system, a fire alarm system, a door control system, a lighting system, a safety escape system, an emergency system and a fire fighting system.
7. An energy storage system for offshore wind energy plant commissioning of claim 1 wherein: and an on-site transformer in the box type variable-current boosting system is connected to a switch cabinet of the offshore boosting station through a cable.
8. An energy storage system for offshore wind energy plant commissioning of claim 7 wherein: the switch cabinet of the offshore booster station for accessing the energy storage system is a main transformer incoming line cabinet of the offshore booster station or other switch cabinets of the offshore booster station which do not run during debugging; and the debugged loop is accessed through the wind turbine generator incoming line cabinet.
9. An energy storage system for offshore wind energy plant commissioning of claim 1 wherein: each section of bus of the offshore booster station switch cabinet needs to be connected with one grounding transformer, and a breaker of a main transformer incoming line cabinet of the offshore booster station is opened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120104938.3U CN214626408U (en) | 2021-01-14 | 2021-01-14 | Energy storage system for offshore wind turbine generator system debugging |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120104938.3U CN214626408U (en) | 2021-01-14 | 2021-01-14 | Energy storage system for offshore wind turbine generator system debugging |
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| CN214626408U true CN214626408U (en) | 2021-11-05 |
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| CN202120104938.3U Active CN214626408U (en) | 2021-01-14 | 2021-01-14 | Energy storage system for offshore wind turbine generator system debugging |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117220171A (en) * | 2023-08-31 | 2023-12-12 | 南方电网调峰调频(广东)储能科技有限公司 | Variable-flow lifting cabin and immersed liquid cooling energy storage system |
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2021
- 2021-01-14 CN CN202120104938.3U patent/CN214626408U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117220171A (en) * | 2023-08-31 | 2023-12-12 | 南方电网调峰调频(广东)储能科技有限公司 | Variable-flow lifting cabin and immersed liquid cooling energy storage system |
| CN117220171B (en) * | 2023-08-31 | 2024-05-03 | 南方电网调峰调频(广东)储能科技有限公司 | Variable-flow lifting cabin and immersed liquid cooling energy storage system |
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