基于环网的配电线路相序检测方法研究  

Research on Phase Sequence Detection Method of Distribution Line Based on Ring Network

作　　者：吴琳 顾建全 胡南 陈华 吴胜飞 Wu Lin;Gu Jian-quan;Hu Nan;Chen Hua;Wu Sheng-fei

机构地区：[1]国网浙江省电力有限公司龙泉市供电公司,浙江龙泉323700

出　　处：《电力系统装备》2021年第16期11-13,共3页Electric Power System Equipment

摘　　要：现阶段我国配电线路的拓扑结构因其复杂性无法确保前后线路的相序一致,这样就会出现并网供电、合环转供电、变压器相序接反等情况导致三相电压相序不一致进而无法正常稳定合闸。对基于环网配电线路的相序检测方法进行分析,通过这种方法能够对三相电压的相序进行准确检测,确保并网供电或合环转供电能够正常运行,进而对环网配电线路进行有效地保护。At the present stage,the topology of distribution lines in China can not ensure the consistency of phase sequence between the front and rear lines because of its complexity.In this way,there will be grid connected power supply,closed loop power supply,inverse phase sequence connection of transformer and other situations,resulting in inconsistent phase sequence of three-phase voltage,and then unable to switch on normally and stably.This paper analyzes the phase sequence detection method based on ring network distribution line.This method can accurately detect the phase sequence of three-phase voltage,ensure the normal operation of grid connected power supply or closed loop power supply,and also provide wireless communication function for ring network cabinet,so as to effectively protect ring network distribution line.

关 键 词：环网配电线路 相序检测 方法研究 

分 类 号：TM726[电气工程—电力系统及自动化]