CN204905890U - Large -scale wind -powered electricity generation field and network system - Google Patents
Large -scale wind -powered electricity generation field and network system Download PDFInfo
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- CN204905890U CN204905890U CN201520572521.4U CN201520572521U CN204905890U CN 204905890 U CN204905890 U CN 204905890U CN 201520572521 U CN201520572521 U CN 201520572521U CN 204905890 U CN204905890 U CN 204905890U
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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
- Y02E10/76—Power conversion electric or electronic aspects
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Abstract
The utility model relates to a large -scale wind -powered electricity generation field and network system, including a plurality of subregion wind -powered electricity generation field, every subregion wind -powered electricity generation field includes collects the circuit for a plurality of times, collects the circuit for every time and has a plurality of typhoons machine, and every typhoon machine is connected with step up transformer elementarily, to subregion wind -powered electricity generation field closely, the generating line is common to be connected with a grade step up transformer eventually through collecing elementarily to collect the circuit for every time, to remote subregion wind -powered electricity generation field, collect the circuit for every time and is connected through collecing common and the secondary step up transformer of generating line elementarily earlier, all secondary step up transformer rethreads are secondary to be collectd a generating line level step up transformer at common and end and is connected, every ultimate step up transformer through whole level collect the generating line common with see the line connection off. The utility model discloses according to the capacity in the wind -powered electricity generation base of planning with see the circumstances of dissolving off, branchs section construction wind -powered electricity generation compiles the station, realizes the wind -powered electricity generation and concentrates the online, reduces the wind -powered electricity generation and takes off the net and to the influence of major network, reduced the investment of seeing circuit and booster stations off, sparingly inserts the interval, is convenient for manage.
Description
Technical field
The utility model belongs to wind power generation and technical field of electric power transmission, is specifically related to a kind of Large Scale Wind Farm Integration grid-connected system.
Background technology
Along with China's wind-powered electricity generation installation scale increases fast, each department wind power base concentrates grid-connected project progressively to put into operation, select suitable connect-in strategy and grid-connected system can improve wind farm grid-connected safety and reliability, to reducing investment outlay, improve earning rate, increasing energy output has very important realistic meaning.The wind power base wind energy turbine set distribution of common planning is concentrated, and send consistent with direction of dissolving, each wind energy turbine set adopts long distance delivery to surf the Net separately, and electric energy loss is comparatively large, and inconvenience management.
Summary of the invention
The purpose of this utility model is that propose a kind of Large Scale Wind Farm Integration grid-connected system, raising wind energy turbine set connection reliability, increases operation benefits with wind energy turbine set booster stations transformer for node.
The purpose of this utility model is achieved in that a kind of Large Scale Wind Farm Integration grid-connected system, comprise several subregion wind energy turbine set, each subregion wind energy turbine set comprises some times and collects circuit, often returns to collect circuit and have some Fans, and every Fans is connected with elementary step-up transformer; For in-plant subregion wind energy turbine set, often return and collect circuit and be jointly connected with whole level step-up transformer by elementary collection bus; For remote subregion wind energy turbine set, often return and collect circuit and be first jointly connected with secondary step-up transformer by elementary collection bus, all secondary step-up transformers are connected with whole level step-up transformer jointly by secondary collection bus again; Each ultimate step-up transformer by whole level collection bus common with send connection.
Further, elementary step-up transformer is 35kV/0.69kV, and secondary step-up transformer is 110kV/35kV, and whole level step-up transformer is 220kV/110kV/35kV.
Further, elementary step-up transformer main tapping rated voltage adopts (36.5 ± 2 × 2.5%) kV/0.69kV, secondary step-up transformer main tapping rated voltage adopts (121 ± 8 × 1.25%) kV/36.5kV, and whole level step-up transformer main tapping rated voltage adopts (230 ± 8 × 1.25%) kV/121kV/36.5kV.
Further, whole level step-up transformer wiring group selects YN, yn0, d11, and secondary step-up transformer wiring group selects YN, d11, and elementary step-up transformer wiring group selects D, yn11.
Further, often return and collect circuit and have 16 ~ 17 Fans, each subregion wind energy turbine set comprises 12 ~ 14 times and collects circuit.
Large Scale Wind Farm Integration grid-connected system of the present utility model is according to the capacity of the wind power base of planning and send the situation of dissolving, point section is built wind-powered electricity generation and is collected station, realize wind-powered electricity generation and concentrate online, reduce wind-powered electricity generation off-grid to the impact of major network, decrease the investment sending circuit and booster stations, save access interval, be convenient to management.
Accompanying drawing illustrates: concrete structure of the present utility model is provided by following drawings and Examples:
Fig. 1 is traditional Large Scale Wind Farm Integration grid-connected system figure;
Fig. 2 is Large Scale Wind Farm Integration grid-connected system figure of the present utility model.
Legend: 1. send circuit, 2.110kV collection bus, 3.110kV/35kV step-up transformer, 4.35kV collection bus, 5. blower fan, 6.35kV/0.69kV step-up transformer, 7.35kV collects circuit, 8.220kV/110kV/35kV step-up transformer, 9.220kV collection bus.
Embodiment: the utility model by the restriction of following embodiment, can not determine concrete execution mode according to the technical solution of the utility model and actual conditions.
Embodiment: as shown in Figure 1, for the boosting connect-in strategy that wind energy turbine set is traditional, wind energy turbine set group capacity is generally 5MW, blower fan adopts single-machine capacity to be the wind turbine generator of 1500kW, every Fans 8 exit potential is 0.69kV, cause 35kV/0.69kV step-up transformer 6 through low-voltage cable and boost to 35kV, then receive 35kV collect on circuit 7 by cable.Often return 35kV to collect circuit 7 and be with 16 ~ 17 Fans 5, each wind energy turbine set is collected circuit 7 through 2 ~ 3 times 35kV and is collected to 35kV collection bus 4, boost to 110kV through 110kV/35kV step-up transformer 3 again, the wind-powered electricity generation sent out in each wind-powered electricity generation place by 110kV collection bus 2 afterwards accesses main electrical network by sending circuit 1.
Wind farm grid-connected scheme of the present utility model, for the Large Scale Wind Farm Integration of installed capacity at about 700MW, being decomposed into multiple installed capacity is that the wind energy turbine set of about 150MW collects station, to reduce the impact of wind-powered electricity generation off-grid on major network.According to overall installed capacity and single wind energy turbine set capacity, consider the conversion efficiency of step-up transformer, and the reactive requirement of coupling system, determine that collecting station configuration 3 capacity is the main transformer of 240MW.
As shown in Figure 2, first wind energy turbine set is divided into several according to installed capacity and collects station, each collect station installed capacity be about 150MW, each station of collecting comprises three 220kV/110kV/35kV step-up transformers 8.Each station of collecting is divided into again several subregion wind energy turbine set, comprises 12 ~ 14 times 35kV in each subregion wind energy turbine set and collect circuit 7, often return 35kV and collect circuit 7 and be with 16 ~ 17 Fans 5, often return 35kV and collect circuit 7 and access 35kV collection bus 4.For in-plant subregion wind energy turbine set, 35kV collection bus 4 is connected to 220kV/110kV/35kV step-up transformer 8; For remote subregion wind energy turbine set, 35kV collection bus 4 is first connected to 110kV/35kV step-up transformer 3, then is connected to 220kV/110kV/35kV step-up transformer 8 by 110kV collection bus; Finally access main electrical network through 220kV collection bus 9 by sending circuit 1 by the high-pressure side of 220kV/110kV/35kV step-up transformer 8.
Due to wind turbine layout dispersion, floor space is comparatively large, apart from collect the nearer subregion wind energy turbine set in station can boost to 35kV after directly access collecting station or collecting station by the access of 35kV switchyard, this kind of access way structure is simple, invests little, and operation maintenance is convenient; Collect station apart from collecting station wind energy turbine set far away by the access of 110kV booster stations, access capacity is large, and fed distance is long, and relaying configuration is complete.Consider the restriction of current 35kV equipment rated current, directly access the every platform main transformer of the wind-powered electricity generation capacity collecting station by 35kV and be no more than 180MW.
Consider that in the running of wind energy turbine set, existing power supply characteristic has part throttle characteristics again, therefore 220kV/110kV/35kV step-up transformer 8 main tapping rated voltage is recommended to adopt (36.5 ± 2 × 2.5%) kV/0.69kV, 110kV/35kV step-up transformer 3 main tapping rated voltage adopts (121 ± 8 × 1.25%) kV/36.5kV, 35kV/0.69kV step-up transformer 6 main tapping rated voltage to adopt (230 ± 8 × 1.25%) kV/121kV/36.5kV.Both meet the power supply characteristic of wind-powered electricity generation safety economy, also rationally can solve power demands during fan starting simultaneously.
For effectively suppressing higher harmonic current, be beneficial to the excision of single-phase grounding fault, make full use of the capacity of equipment of transformer, 220kV/110kV/35kV step-up transformer 8 wiring group selects YN, yn0, d11, according to the selection of wiring group collecting station owner's transformer, 110kV/35kV step-up transformer 3 wiring group selects YN, d11,35kV/0.69kV step-up transformer 6 wiring group selects D, yn11, achieves the conversion of Y/D, D/Y system.
Above technical characteristic is only embodiment of the present utility model, can increase and decrease inessential technical characteristic according to actual needs, meet the needs of different situations.
Claims (5)
1. a Large Scale Wind Farm Integration grid-connected system, is characterized in that: comprise several subregion wind energy turbine set, and each subregion wind energy turbine set comprises some times and collects circuit, often returns to collect circuit and have some Fans, and every Fans is connected with elementary step-up transformer; For in-plant subregion wind energy turbine set, often return and collect circuit and be jointly connected with whole level step-up transformer by elementary collection bus; For remote subregion wind energy turbine set, often return and collect circuit and be first jointly connected with secondary step-up transformer by elementary collection bus, all secondary step-up transformers are connected with whole level step-up transformer jointly by secondary collection bus again; Each ultimate step-up transformer by whole level collection bus common with send connection.
2. Large Scale Wind Farm Integration grid-connected system as claimed in claim 1, it is characterized in that: elementary step-up transformer is 35kV/0.69kV, secondary step-up transformer is 110kV/35kV, and whole level step-up transformer is 220kV/110kV/35kV.
3. Large Scale Wind Farm Integration grid-connected system as claimed in claim 2, it is characterized in that: elementary step-up transformer main tapping rated voltage adopts 36.5 ± 2 × 2.5%kV/0.69kV, secondary step-up transformer main tapping rated voltage adopts 121 ± 8 × 1.25%kV/36.5kV, and whole level step-up transformer main tapping rated voltage adopts 230 ± 8 × 1.25%kV/121kV/36.5kV.
4. the Large Scale Wind Farm Integration grid-connected system as described in claims 1 to 3 any one, is characterized in that: whole level step-up transformer wiring group selects YN, yn0, d11, secondary step-up transformer wiring group selects YN, d11, elementary step-up transformer wiring group selects D, yn11.
5. the Large Scale Wind Farm Integration grid-connected system as described in claims 1 to 3 any one, is characterized in that: often return and collect circuit and have 16 ~ 17 Fans, each subregion wind energy turbine set comprises 12 ~ 14 times and collects circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201520572521.4U CN204905890U (en) | 2015-08-03 | 2015-08-03 | Large -scale wind -powered electricity generation field and network system |
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| CN201520572521.4U CN204905890U (en) | 2015-08-03 | 2015-08-03 | Large -scale wind -powered electricity generation field and network system |
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| CN204905890U true CN204905890U (en) | 2015-12-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113206513A (en) * | 2021-04-28 | 2021-08-03 | 中国能源建设集团广东省电力设计研究院有限公司 | Super-high pressure delivery system for offshore wind farm |
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2015
- 2015-08-03 CN CN201520572521.4U patent/CN204905890U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113206513A (en) * | 2021-04-28 | 2021-08-03 | 中国能源建设集团广东省电力设计研究院有限公司 | Super-high pressure delivery system for offshore wind farm |
| CN113206513B (en) * | 2021-04-28 | 2023-06-16 | 中国能源建设集团广东省电力设计研究院有限公司 | Ultra-high pressure sending-out system of offshore wind farm |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210323 Address after: 100032 9th floor, 6 Fuchengmen North Street, Xicheng District, Beijing Patentee after: LONGYUAN (BEIJING) WIND POWER ENGINEERING & CONSULTING Co.,Ltd. Address before: 830063 f / F, urban construction building, 133 Nanhu South Road, Urumqi, Xinjiang Uygur Autonomous Region Patentee before: XINJIANG WIND POWER ENGINEERING CONSULTING Co.,Ltd. |
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| TR01 | Transfer of patent right |