海上风电场集电系统拓扑结构对重燃过电压影响  

Relationship between Topology of Collection Network and Restrike Overvoltage in Offshore Wind Farms

作　　者：程彧 周歧斌[2] 边晓燕[1] 

机构地区：[1]上海电力学院,上海200090 [2]上海市防雷中心,上海201615

出　　处：《电瓷避雷器》2017年第5期1-5,共5页Insulators and Surge Arresters

基　　金：上海市气象局面上课题(编号:MS201602)

摘　　要：海上风电场内部真空断路器开断时易发生重燃,产生重燃过电压危害其安全运行。海上风电场集电线路拓扑结构会影响断路器重燃过电压。比较几种常见拓扑结构优缺点,分析断路器重燃机理,利用ATP-EMTP搭建海上风电场系统模型,讨论拓扑结构对重燃过电压的影响。结果表明断路器发生重燃的线路末端产生过电压最大;对于不同拓扑结构的系统参数,星形拓扑结构产生的过电压更小。研究结果可从过电压防护角度为海上风电场集电系统设计提供参考。In the offshore wind farm, the safe operation will be seriously impacted by the restrike overvohage from multiple re-ignition of vacuum circuit breakers. The topology of collection network in the offshore wind farm will influence the restrike overvohage. To investigate this problem, some typical topology structures were compared and the reignition mechanism of the vacuum circuit breaker was ana- lyzed, and the system model of offshore wind farm was established by using ATP-EMTP to discuss the ef- fect of topology on re-ignition overvoltage. The result shows that the maximum overvohage appears at the end of the cable when reignition happened. Moreover, among different topology＇ s parameters the star topology has the minimum overvoltage. The result can provide some references for the design of the collection network of offshore wind farms from the angle of overvoltage protection.

关 键 词：海上风电场 拓扑结构 真空断路器 重燃过电压 ATP—EMTP 

分 类 号：TM614[电气工程—电力系统及自动化]