ZnO避雷器式故障限流器的实用拓扑设计  

Practical Topology Design of MOA-Based Fault Current Limiter

作　　者：李庆民[1] 肖茂友[1] 娄杰[1] 李清泉[1] 刘汝水[2] 

机构地区：[1]山东大学电气工程学院,济南250061 [2]山东电力研究院,济南250021

出　　处：《电力系统及其自动化学报》2007年第3期46-50,共5页Proceedings of the CSU-EPSA

基　　金：山东省自然科学基金(Q2004F03);山东省中青年科学家科研基金(2005BS01011)资助

摘　　要：为限制短路故障电流的增大,基于常规设备的故障电流限制器有望在电力系统中首先获得实用。针对ZnO避雷器式故障限流器中M OA吸能过大的问题,提出了一种由电容器、带中间抽头的串联电抗器、ZnO避雷器、可控间隙以及旁路开关组成的新型电路拓扑,以降低对避雷器暂态吸能能力的要求,并改善限流器的动态特性。文中给出了新型限流拓扑中各个元件参数的优化设计原则,并通过对110 kV系统短路故障的仿真分析,验证了新型限流拓扑设计的有效性。To pursue a preferable solution in suppressing the ever-increasing short-circuit fault currents, fault current limiters （FCL） based on routine elements may find earliest applications in power systems. Being composed of a capacitor, an in-series inductor with internal tap changer, ZnO arresters, a triggered gap and a bypass circuit breaker, a practical topology design is presented for the ZnO arrester-based FCL, which can greatly reduce the capacity requirement of ZnO arresters for transient energy absorption as well as ameliorate the dynamic performance of the FCL. The criteria for optimal parameter design of each element within the new topology is given, and the effectiveness of the proposed current-limiting topology is verified through simulations of a typical short-circuit fault in 110 kV system.

关 键 词：故障限流器 氧化锌避雷器 串联谐振 触发间隙 旁路开关 

分 类 号：TM471[电气工程—电器]