基于配电网一二次融合成套设备的接地故障处理方案研究  

Research on Earthing Fault Treatment Based on Primary and Secondary Integration Technology of Distribution Network

作　　者：曾先锋[1] 任百群 宋兵[1] 石勇[1] 朱中华[1] ZENG Xianfeng;REN Baiqun;SONG Bing;SHI Yong;ZHU Zhonghua(NR Electric Co.,Ltd.,Nanjing 211102,Jiangsu,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：《四川电力技术》2022年第1期21-25,共5页Sichuan Electric Power Technology

基　　金：国家重点研发计划资助项目(2018YFB0904800)。

摘　　要：针对单相接地故障检测和快速隔离的难题,提出了基于配电网一二次融合技术的接地故障处理方案。方案通过一二次融合成套设备及小波包暂态零序选线技术,利用来电合闸、无压分闸、合于故障加速跳闸、故障路径优先等策略,有效解决了多分支、多供电方式下单终端选线选段的难题。同时结合现场应用案例,证明了所提方案可以快速实现接地故障区段的定位和隔离,具有普遍的适用性。In order to solve the problems about the detection and quick isolation of single-phase earthing faults in a small current grounding system,an earthing fault treatment scheme is proposed based on primary and secondary integration technology of distribution network.Through a complete set of primary and secondary fusion equipment and wavelet packet transient zero-sequence line selection technology,and combined with the use of incoming call closing,voltage-free opening,closing on fault accelerated tripping,fault path priority and other strategies,the problems of single terminal line selection under multi-branch and multi-power supply modes are effectively solved.At the same time,combined with on-site application cases,it is proved that the proposed scheme can quickly realize the location and isolation of ground fault zone and has universal applicability.

关 键 词：小电流接地系统 单相接地 一二次融合 小波包 故障路径优先 

分 类 号：TM452[电气工程—电器]