超高压电网故障电流限制器在电网中的应用评价

Application Evaluation on the EHV Fault Current Limiter in Power Grid

随着电网的发展,短路电流超标成为限制电网发展的瓶颈。采用串联谐振型故障电流限制器正常运行时对电网没有影响,而在电网故障时,可以快速启动,将系统短路电流限制到安全数值以下。描述了安装在瓶窑-仁和线路上的我国首套故障电流限制器的原理、结构及实际系统人工短路试验情况,分析了其性能及动作结果,并提出了改进建议。

With the advancement of power grid,the outpouring of short-circuit current constitutes the development bottleneck.However the series resonance type fault current limiter（FCL） can be adopted as alternative to pick up quickly to limit the short current within safe value in case of system fault,but have no impact on the grid normally.This paper presents the principle,structure and man-made short-circuit test of our country′s first set of FCL installed in the line between Pingyao and Renhe.The performance and results are analyzed and some suggestions for improvement are proposed thereby.