摘要
针对单一选线原理的不足,提出了一种综合选线策略,即基于稳态分量的零序导纳法、零序电纳增量法和零序电导法、基于暂态分量的暂态电流互积求和法;基于该综合选线策略开发了一套小电流接地系统单相接地故障选线装置。该选线装置能根据不同的中性点接地方式通过键盘选择不同的选线算法,实现基于稳态接地故障和暂态接地故障的综合选线。实验结果表明,该选线装置对于高阻接地故障、电弧性接地故障等都具有较高的准确性。
For the deficiency of single line selection principle,the paper proposed integrative line selection strategy,namely zero sequence admittance method,zero sequence susceptance increment method and zero sequence conductance method based on steady-state fault component,mutual integral of transient current based on transient-state fault componet.A line selection device for small current single-phase grounding fault was developed based on the above method.The line selection device can select different line selection algorithm according to different neutral grounding through keyboard,and realize integrative line selection based on steady-state and transient grounding fault.The experiment result showed that the line selection device is effective for high impedance grounding fault and arcing grounding fault.
出处
《工矿自动化》
北大核心
2012年第4期34-38,共5页
Journal Of Mine Automation
关键词
小电流接地系统
单相接地故障
零序导纳法
零序电纳增量法
零序电导法
暂态电流互积求和法
综合选线策略
small current grounding system
single-phase grounding fault
zero sequence admittance method
zero sequence susceptance increment method
zero sequence conductance method
mutual integral of transient current
integrative line selection strategy
作者简介
李辉（1986-），男，江苏涟水人，硕士研究生，主要研究方向为供电系统安全与保护。E—mail：jshalisnshui@126．com
