Suzhou Electric Appliance Research Institute
期刊号: CN32-1800/TM| ISSN1007-3175

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大规模风电集中接入对系统短路电流的影响分析

来源:电工电气发布时间:2016-03-11 13:11 浏览次数:11

大规模风电集中接入对系统短路电流的影响分析 

周专,吕盼,宋新甫,张增强,刘建亮 
(1 国网新疆电力公司经济技术研究院,新疆 乌鲁木齐 830016;
2 国网新疆电力公司奎屯供电公司,新疆 奎屯 832100)
 
 

摘 要:规模化风电集中接入电网,将对系统提供一定的短路电流,影响设备选型、升压站中低压侧的运行方式等。通过对不同风电机组型号(双馈式和直驱式)及不同容量的单个风电机组对系统提供的短路电流分析,根据风电机组短路PMU 录波曲线和风电机组模型短路仿真曲线,提出了一种工程计算方法,计算出不同型号和不同容量的风电机组等值次暂态电抗,并结合短路电流理论计算模型,分析单个风电场以及风电汇集站对系统提供的短路电流,结果表明,规模化风电的集中接入,对系统提供的短路电流不可忽略。
关键词:风电场;风电机组;次暂态电抗;短路电流
中图分类号:TM614 文献标识码:A 文章编号:1007-3175(2015)11-0013-04


Impact of Large-Scale Wind Power Centralized Access on System Short-Circuit Current 

ZHOU Zhuan, LV Pan, SONG
Xin-fu, ZHANG Zeng-qiang, LIU Jian-liang
 
(1 State Grid Electric Power Company Xinjiang Institute of Economic Research Technology, Urumqi 830016, China;
2 State Grid Xinjiang Power Company Kuitun Power Supply Company, Kuitun 832100, China)
 
 

Abstract: Large-scale wind power centralized access to the power grid caused many problems, such as short-circuit current, equipment selection and mode of operation at middle and low voltage side in booster station etc. Through the different wind turbine generator models (dual-fed and direct drive) and single wind turbine generator of different capacity, this paper analyzed the system short-circuit current. Based on wind turbines short-circuit PMU recorded wave curve and wind turbine generator model short-circuit simulation curve, this paper proposed an engineering calculation method to calculate the different models and capacity wind turbine generator equivalent subtransient reactance. Combining with the theoretical calculation model of short-circuit current, this paper analyzed the system short-circuit current provided by the single wind farm and wind power centralized station. The result shows that the large-scale wind power centralized access provides the un-neglected short-circuit current for the system.
Key words: wind farm; wind turbine generator; subtransient reactance; short-circuit current


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