主动配电网单相接地故障定位方法
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摘要
主动配电网单相接地故障定位有利于缩短停电时间,提高配网运行可靠性。但是,传统配电网的故障定位方法已经不能满足主动配电网的故障定位要求。因此,分析主动配电网单相接地故障特征,阐述大电流和小电流接地系统单相接地区段定位方法。当系统为大电流接地方式时,其故障定位方法与相间故障相同;当系统为小电流接地方式时,需要采集暂态电流。
Active distribution network single-phase grounding fault location is conducive to shortening the outage time and improving the reliability of distribution network operation. However, the traditional fault location methods of distribution network cannot meet the requirements of active distribution network fault location. Therefore,the characteristics of singlephase grounding fault in active distribution network are analyzed,and the location method of single-phase grounding section in large current and small current grounding system is expounded. When the system is grounded by large current, its fault location method is the same as that of phase-to-phase fault. When the system is grounded by small current,it is necessary to collect transient current.
Active distribution network single-phase grounding fault location is conducive to shortening the outage time and improving the reliability of distribution network operation. However, the traditional fault location methods of distribution network cannot meet the requirements of active distribution network fault location. Therefore,the characteristics of singlephase grounding fault in active distribution network are analyzed,and the location method of single-phase grounding section in large current and small current grounding system is expounded. When the system is grounded by large current, its fault location method is the same as that of phase-to-phase fault. When the system is grounded by small current,it is necessary to collect transient current.
引文
[1]刘健,张小庆,同向前,等.含分布式电源配电网的故障定位[J].电力系统自动化,2013,37(2):36-42.
[2]周湶,郑柏林,廖瑞金,等.基于粒子群和差分进化算法的含分布式电源的配电网故障区段定位[J].电力系统保护与控制,2013,41(4):33-37.
[2]周湶,郑柏林,廖瑞金,等.基于粒子群和差分进化算法的含分布式电源的配电网故障区段定位[J].电力系统保护与控制,2013,41(4):33-37.