基于柔性接地的配网故障选线及类型判别
Power & Energy(2018)
Abstract
小电流接地配电网单相接地故障选线、弧光接地过电压和故障类型识别一直都是困扰运维人员的难题.为解决这些问题,提出了配网柔性接地技术,通过在配网中性点安装可控硅接地开关,在故障出线产生易被识别的脉冲信号,实现了单相接地故障选线.以此为基础,在母线通过可控硅软开关实现了故障点容性电流转移接地,消除了单相接地弧光过电压,同时利用可控硅开关的合理动作实现了故障类型的准确识别.
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