长距离混合输电线路重合闸判断方法分析  

Analysis of Auto Reclose Method for Long Distance Hybrid Overhead and Underground Cable Transmission Lines

作　　者：沈冬 阎嫦玲[1] 须雷[1] SHEN Dong;YAN Changling;XU Lei(NR Electric Co.,Ltd.,Nanjing 211102,China)

机构地区：[1]南京南瑞继保电气有限公司,江苏南京211102

出　　处：《通信电源技术》2021年第8期169-171,共3页Telecom Power Technology

摘　　要：目前,变电站内配置的继电保护设备可以通过故障分析法和行波测距法等方法来判断故障点所处的位置,但容易受到各种工况的影响,很难做到精确的故障定位。因此提出使用光学互感器的方法,为电缆线路区间配置独立的差动保护设备,来快速识别故障是否存在于电缆线路区间,从而实现重合闸的准确判断。At present,protection relays can analysis the fault location by using fault analysis method or traveling wave method and etc,but all these methods are easily affected by various site working conditions and difficult to locate the fault location accurately.This paper proposes a method of using optical current transformers with using independent differential protection relay to locate fault location weather exist in underground cable or not.So,auto reclose can operate accurately.

关 键 词：混合输电线路 故障定位 重合闸 光学电流互感器 

分 类 号：TM7[电气工程—电力系统及自动化]