故障限流器与输电线路纵联保护相配合问题的研究  

Study on Fault Current Limiter and Power Transmission Pilot Protection Matching Issue

作　　者：董权力[1] 王佳成[2] 时斌[1] 李浩[1] 

机构地区：[1]东南大学电气工程学院,江苏南京210096 [2]南京南瑞继保电气有限公司,江苏南京211102

出　　处：《电工电气》2014年第6期18-23,50,共7页Electrotechnics Electric

摘　　要：介绍了方向闭锁式纵联保护原理,通过Matlab软件搭建仿真模型,描述了桥式限流器的限流电感不同时对电路产生的影响,分析了故障限流器对限流电感及距离纵联保护的影响,结果表明,加入故障限流器能改善电流互感器的性能,防止其饱和,减小不平衡电流,也可能造成以序分量为判断依据的功率方向继电器误动,妨碍应用了功率方向元件的纵联保护正确工作。Introduction was made to the pilot protection principle of directional locking type. By Matlab software simulation model, this paper described the impact on circuits at time of different current limiting induction of bridge current limiter, analyzing impact of fault cur-rent limiter on current limiting induction and distance pilot protection. The result shows that with the fault current limiter added, the per-formance of current transformer could be improved, so as to prevent it from saturation, to reduce unbalanced current, but to cause power direction relay unwanted operation with sequence component as judging basis, which affects pilot protection correct work of applied power direction element.

关 键 词：故障限流器 纵联保护 短路电流 输电线路 

分 类 号：TM773[电气工程—电力系统及自动化]