CN205178628U - Stand -by power supply system of marine wind field fan - Google Patents
Stand -by power supply system of marine wind field fan Download PDFInfo
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- CN205178628U CN205178628U CN201520839421.3U CN201520839421U CN205178628U CN 205178628 U CN205178628 U CN 205178628U CN 201520839421 U CN201520839421 U CN 201520839421U CN 205178628 U CN205178628 U CN 205178628U
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- blower fan
- wind field
- marine wind
- transformer station
- transformer
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Abstract
The utility model provides a marine wind field fan stand -by power supply system includes power module, the equipment of stepping up, electric power transmission network, step -down equipment and distribution switchgear at least, and power module and the equipment of stepping up pass through electric power transmission network, meet step -down equipment and distribution switchgear again, meet the system to fan 400V. The utility model discloses marine wind field fan stand -by power supply system can improve the safe and reliable and the equipment durability of fan to whole stand -by power supply system economy nature, practicality are good, and it is convenient to implement.
Description
Technical field
The utility model relates to marine wind electric field electrical engineering;
Particularly relate to a kind of significantly improve offshore wind generating fail safe, reliability and survival ability standby power system.
Background technology
Offshore wind turbine is typically equipped with the stand-by power supply such as UPS, super capacitor, but capacity is less, operating time is in 1 ~ 2 hour, cannot ensure that blower fan has been in electricity condition for a long time, also cannot ensure that driftage, dehumidifying, fire-fighting etc. affect the system long-time running of fan safe, along with the large-scale development of offshore wind farm, the fail safe of offshore wind turbine more and more comes into one's own, and provides a kind of effective, lasting, reliable blower fan standby power system to be very necessary.Specifically there is following effect:
1, at construction period, after maritime transformer station centralized control center in place or land builds up, cable laying operation or the access electricity power engineering of sending high-pressure undersea cable also do not complete, and at sea before transformer station or land centralized control center power transmission, part fan may complete lifting, in, current collection sea cable lays, the debugging efforts of blower fan, checking and accepting, production preparation, the work of addendum defect elimination all needs to carry out, and AC power is absolutely necessary.Before whole wind field is powered, emergency standby power can be utilized to power to each blower fan, complete blower fan formally generate electricity before a series of mode work, be conducive to raising the efficiency, accelerate the construction progress of wind field.
2, at run duration, the main situation sending extra large cable fault occurring, because extra large cable is very long for repair time, needs several weeks at the soonest, is the required power supply ensureing platform in this situation, as fire-fighting power supply, charge in batteries power supply etc., needs to exchange emergency standby power; Meanwhile, be protection offshore wind turbine, its dehumidification system, control system, pitch-controlled system, yaw system also need the long-term power supply of emergency power supply.
3, under the extreme weather conditions such as typhoon, having a power failure on a large scale appears in electrical network, and the emergency standby power by maritime transformer station or land centralized control center is powered to blower fan, improves the survival ability of blower fan during this period.
Emergency standby power applies to industry-by-industry, general consideration to utilize in wind energy turbine set primary substation station local coordinate frame as a step-up transformer, 35kV is risen to by 400V, the 35kV bus of access maritime transformer station, again by 35kV sea cable to wind turbine 35kV ring main unit, to use by oneself power supply as blower fan after blower fan transformer pressure-reducing.But because 35kV submarine cable systems exists Large Copacity charge power, blower fan main transformer no-load loss Po is larger simultaneously, during operation, electric energy loss is also quite large, need configure high-power generator, as a 300MW marine wind electric field, generator power can reach kW up to ten thousand, invest huge, operation and maintenance cost is high, extremely uneconomical, in fact cannot become the standby power system of offshore wind turbine.
Utility model content
All deficiencies of prior art in view of the above, the technical problems to be solved in the utility model is to provide a kind of using small power generator as power supply, and the reliable and secure standby power system being delivered to blower fan 400V side of energy, to overcome the above-mentioned defect of prior art.
For achieving the above object and other relevant objects, the utility model provides a kind of marine wind field blower fan standby power system, at least comprises electricity generation module, booster apparatus, electric power transmission network, decompression device and distribution switchgear,
Electricity generation module, adopts the power installed in land transformer station or maritime transformer station to be not more than the generator of 1000kW;
Booster apparatus, adopts the step-up transformer installed in land transformer station or maritime transformer station;
Electric power transmission network, comprises in land transformer station or maritime transformer station 35kV switchgear, 35kV sea cable network, the blower fan high-pressure side looped network equipment doing step-down and use;
Decompression device, main transformer when adopting blower fan normally to run;
Distribution switchgear, adopt the medium voltage switchgear equipment arranged side by side with fan stator loop medium voltage breaker, described medium voltage switchgear equipment disconnects when wind field normally runs, closed during stand-by power supply powering mode.
Preferably, described generator is arranged in land wind field centralized control center or marine primary substation.
Preferably, described generator is hard-wired diesel engine generator or moving emergency power supply generator car.
Preferably, 35kV switch cubicle when described electric power transmission network is normal operation in marine wind field and the extra large cable current collection circuit network of blower fan, and blower fan 35kV ring main unit.
Preferably, described booster apparatus is a hard-wired step-up transformer and a 35kV switch cubicle, and rated voltage ratio is 0.4/2.2kV or 0.4/4.7kV.
Preferably, described decompression device is the main transformer of blower fan, and rated voltage ratio is 2.2/0.4kV or 4.7/0.4kV.
Due to square being directly proportional of extra large cable charge power and transformer noload losses and voltage; the voltage of sea cable electric power transmission network reduces; to greatly reduce system charge power and electric energy loss; by above technical scheme; the existing extra large cable network of the utilization of power that diesel engine generator sends by the utility model and power transmission and transforming equipment are delivered to blower fan 400V side; for blower fan each system in shutdown situation; effectively ensure that the safe and reliable of blower fan and equipment durability, and whole standby power system economy, practicality are good.
Accompanying drawing explanation
Fig. 1 shows the systematic schematic diagram of the utility model marine wind field blower fan standby power system.
Element numbers illustrates:
1 electricity generation module
2 booster apparatus
3 electric power transmission networks
4 decompression devices
5 distribution switchgears
Embodiment
By particular specific embodiment, execution mode of the present utility model is described below, person skilled in the art scholar the content disclosed by this specification can understand other advantages of the present utility model and effect easily.
Refer to Fig. 1.Notice, structure, ratio, size etc. that this specification institute accompanying drawings illustrates, content all only in order to coordinate specification to disclose, understand for person skilled in the art scholar and read, and be not used to limit the enforceable qualifications of the utility model, therefore the not technical essential meaning of tool, the adjustment of the modification of any structure, the change of proportionate relationship or size, do not affecting under effect that the utility model can produce and the object that can reach, still all should drop on technology contents that the utility model discloses and obtain in the scope that can contain.Simultaneously, quote in this specification as " on ", D score, "left", "right", " centre " and " one " etc. term, also only for ease of understanding of describing, and be not used to limit the enforceable scope of the utility model, the change of its relativeness or adjustment, under changing technology contents without essence, when being also considered as the enforceable category of the utility model.
Consult shown in Fig. 1, the utility model provides a kind of marine wind field blower fan standby power system, at least comprise electricity generation module 1, booster apparatus 2, electric power transmission network 3, decompression device 4 and distribution switchgear 5, electricity generation module 1 and booster apparatus 2 are by electric power transmission network 3, connect decompression device 4 and distribution switchgear 5 again, be connected to blower fan 400V system.
Electricity generation module 1 adopts the stationary diesel generator or moving emergency power supply generator car that are arranged in land wind field centralized control center or marine primary substation.The power of generator is not more than 1000kW, preferred 800kW.
The step-up transformer that booster apparatus 2 adopts land transformer station or maritime transformer station internal fixtion to install and a 35kV switch cubicle, rated voltage ratio is 0.4/2.2kV or 0.4/4.7kV.
Electric power transmission network 3 is specially the 35kV sea cable current collection circuit network of normal 35kV switch cubicle when running and blower fan in marine wind field, and blower fan 35kV blower fan high-pressure side looped network equipment.Main transformer when decompression device 4 specifically adopts blower fan normally to run, rated voltage ratio is 2.2/0.4kV or 4.7/0.4kV.
Distribution switchgear 5 adopts the medium voltage switchgear equipment arranged side by side with fan stator loop medium voltage breaker, and medium voltage switchgear equipment disconnects when wind field normally runs, closed during stand-by power supply powering mode, is connected to blower fan 400V system.
The rated voltage of fan stator is Un1, for making still to supply 400V electricity consumption by blower fan main transformer under emergency power shape, then the rated voltage of grid is 35/Un1 × 0.4kV, the well matched main transformer of offshore wind turbine one, and its high-pressure side is 35kV, low-pressure side is stator rated voltage, along with the increase of offshore wind turbine single-machine capacity, fan outlet rated voltage all increases, and 6MW blower fan as sharp in China is 6.3kV, the electric 3.6MW in Shanghai is 3kV, and Hunan electricity 5MW blower fan is 3.2kV.To 6.3kV, extra large cable electric power transmission network rated voltage is 2.2kV, and to 3kV, extra large cable electric power transmission network rated voltage is 4.7kV.Through verification, for the auxiliary power load power of blower fan, within the scope of 25km, adopt above-mentioned network voltage, line drop is less than 5%, meets general distribution network electric energy quality requirement.
During system cloud gray model, the each inlet wire main switch of land transformer station or maritime transformer station main transformer 35kV side should be disconnected, with grid disconnection, close the block switch of 35kV bus again, diesel engine generator by special step-up transformer and special switch cabinet to 35kV busbar charging, close each blower fan circuit switching to the cable charging of 35kV sea, and extra large cable is running under several kV voltages of its rated voltage, for blower fan 400V electricity consumption after the main transformer step-down of blower fan.
Diesel engine generator, special switch cabinet, each blower fan circuit switching cabinet, blower fan ring main unit and blower fan special IVdistribution switch equipment all need to configure a set of protection, and when this system cloud gray model, the protection of blower fan normal power generation operating mode all should be removed.
In sum, the utility model marine wind field blower fan standby power system is at wind field construction, blower debugging and run duration, and during the extreme climates such as typhoon, all play an important role, the safe and reliable of blower fan and equipment durability can be improved, and whole standby power system economy, practicality are good, it is convenient to implement.So the utility model effectively overcomes various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present utility model and effect thereof only, but not for limiting the utility model.Any person skilled in the art scholar all without prejudice under spirit of the present utility model and category, can modify above-described embodiment or changes.Therefore, such as have in art and usually know that the knowledgeable modifies or changes not departing from all equivalences completed under the spirit and technological thought that the utility model discloses, must be contained by claim of the present utility model.
Claims (6)
1. a standby power system for marine wind field blower fan, is characterized in that, at least comprises electricity generation module, booster apparatus, electric power transmission network, decompression device and distribution switchgear,
Electricity generation module, adopts the power installed in land transformer station or maritime transformer station to be not more than the generator of 1000kW;
Booster apparatus, adopts the step-up transformer installed in land transformer station or maritime transformer station;
Electric power transmission network, comprises in land transformer station or maritime transformer station 35kV switchgear, 35kV sea cable network, the blower fan high-pressure side looped network equipment doing step-down and use;
Decompression device, main transformer when adopting blower fan normally to run;
Distribution switchgear, adopt the medium voltage switchgear equipment arranged side by side with fan stator loop medium voltage breaker, described medium voltage switchgear equipment disconnects when wind field normally runs, closed during stand-by power supply powering mode.
2. the standby power system of marine wind field blower fan according to claim 1, is characterized in that, described generator is arranged in land wind field centralized control center or marine primary substation.
3. the standby power system of marine wind field blower fan according to claim 2, is characterized in that, described generator is hard-wired diesel engine generator or moving emergency power supply generator car.
4. the standby power system of marine wind field blower fan according to claim 1, is characterized in that, 35kV switch cubicle when described electric power transmission network is normal operation in marine wind field and the extra large cable current collection circuit network of blower fan, and blower fan 35kV ring main unit.
5. the standby power system of the marine wind field blower fan according to any one of claim 1-4, is characterized in that, described booster apparatus is a hard-wired step-up transformer and a 35kV switch cubicle, and rated voltage ratio is 0.4/2.2kV or 0.4/4.7kV.
6. the standby power system of the marine wind field blower fan according to any one of claim 1-4, it is characterized in that, described decompression device is the main transformer of blower fan, rated voltage ratio is 2.2/0.4kV or 4.7/0.4kV.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520839421.3U CN205178628U (en) | 2015-10-27 | 2015-10-27 | Stand -by power supply system of marine wind field fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520839421.3U CN205178628U (en) | 2015-10-27 | 2015-10-27 | Stand -by power supply system of marine wind field fan |
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| Publication Number | Publication Date |
|---|---|
| CN205178628U true CN205178628U (en) | 2016-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520839421.3U Withdrawn - After Issue CN205178628U (en) | 2015-10-27 | 2015-10-27 | Stand -by power supply system of marine wind field fan |
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| Country | Link |
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| CN (1) | CN205178628U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107086661A (en) * | 2017-04-26 | 2017-08-22 | 明阳智慧能源集团股份公司 | The design method and input method of a kind of wind power plant driftage emergency power system |
-
2015
- 2015-10-27 CN CN201520839421.3U patent/CN205178628U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107086661A (en) * | 2017-04-26 | 2017-08-22 | 明阳智慧能源集团股份公司 | The design method and input method of a kind of wind power plant driftage emergency power system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160420 Effective date of abandoning: 20220406 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20160420 Effective date of abandoning: 20220406 |