摘要
小电流接地系统在我国配电网中被广泛应用,小电流接地方式下的单相接地故障处理是一项系统技术。针对单相接地故障处理的效果一直不甚理想的问题,有必要开展真实运行环境下的单相接地试验,以检验自动跟踪补偿消弧线圈、单相接地故障选线装置的动作性能。本文以某110 kV变电站为例,在真实运行环境下开展了单相接地试验,对消弧线圈的动作特性以及小电流选线装置的动作性能进行系统测试,核实了消弧线圈的补偿速度、补偿深度等指标是否符合相关标准要求,分析了选线装置选线失败的原因,有助于提高小电流接地系统单相接地故障处理能力。
Small current grounding system is widely used in the distribution network of China and the treatment of single phase grounding fault at the small current grounding condition is a system technology.In view of the issue that the treatment result of the single phase grounding fault is not ideal,it is necessary to perform the single phase grounding test at real operation environment so to check the operation performance of automatic tracking compensation arc suppression coil and and line selection device.In this paper,one 110 kV substation in Xi’an is taken as an example,the single phase grounding test at real operation environment is performed,the operation performance of arc suppression coil and the line selection device of small current is systematically tested so to check whether the compensation speed and depth of the arc suppression coil meet related standard requirement.The reason on the failure of the line selection device is analyzed,which lays foundation for improving the correct operation of the device at sing phase grounding.
作者
陈洁羽
万青
王毅钊
权立
张志华
李勇
CHEN Jieyu;WAN Qing;WANG Yizhao;QUAN Li;ZHANG Zhihua;LI Yong(Shaanxi Electric Power Research Institute,Xi’an 710100,China;Xi’an Hengway Electric Technology Co.,Ltd.,Xi’an 710100,China)
出处
《电力电容器与无功补偿》
2022年第3期67-72,共6页
Power Capacitor & Reactive Power Compensation
基金
国家自然科学基金重点项目(U1766208)。
关键词
配电网
小电流接地系统
故障选线
消弧线圈
distribution network
small current grounding system
fault line selection
arc suppression coil
