基于暂态分量特性的柱上开关保护  

Column switch protection based on transient component characteristics

作　　者：韩笑[1] 王凡 蒋剑涛 孙杰 HAN Xiao;WANG Fan;JIANG Jian-tao;SUN Jie(School of Electric Power Engineering,Nanjing Institute of Technology,Nanjing 211167,China)

机构地区：[1]南京工程学院电力工程学院,南京211167

出　　处：《信息技术》2022年第8期21-26,共6页Information Technology

基　　金：江苏省研究生实践创新计划项目(SJCX21_0944)。

摘　　要：针对配电网发生单相接地故障时电流微弱的问题,设计了基于暂态分量特性的柱上开关保护方案,采用S变换处理各个测点采集的电流,得到电流暂态能量;通过综合分析各个测点的测量结果,判断故障区域,保证柱上开关准确、动作快速。通过仿真实验,验证了保护方案的可行性。Based on the problem of weak current when single-phase grounding fault occurs in distribution network,a protection scheme of column switch based on transient component characteristics is designed.In this scheme,S-transform is used to process the current collected at each measuring point to obtain the current transient energy.By comprehensively analyzing the measurement results of each measuring point,the fault area is judged and the accurate and rapid action of the column switch is ensured.The feasibility of the protection scheme is verified by simulation experiments.

关 键 词：配电网 接地故障 S变换 暂态能量 高采样率 

分 类 号：TM774[电气工程—电力系统及自动化]