故障电流限制器对线路保护的影响分析和整定运行措施

Analysis on Impact of Fault Current Limiter on Line Protection and Adjusting Operation Measures

为限制短路电流水平,故障电流限制器作为新的技术措施进入科技应用阶段。故障电流限制器正常运行时不改变潮流分布,检测到故障时增加线路阻抗限制短路电流,在此故障暂态过程中,增加线路阻抗将对线路保护的动作行为产生不利影响。分析了故障电流限制器对线路保护的影响情况,阐述保护装置采取的技术手段和实际运行采取的整定措施。

In order to limit the short circuit current,the fault current limiter（FCL） is entering the application as a new technical measure.The fault current limiter does not change the distribution of power flow during normal operation,but it will increase the line impedance to limit the short circuit current when a short circuit fault detected.In this fault transient process,the increase of the line impedance will have adverse effects on the action behavior of line protection.The impact of the fault current limiter on the line protection was analyzed.The technical measures of the protection devices and the adjusting measures during the practical operation were elaborated.