110 kV馈线单相断线故障的分析与对策  

Analysis of and Countermeasures Against the Single-phase Disconnection Fault of 110 kV Feeders

作　　者：王兴佳 WANG Xingjia(Maoming Power Supply Bureau of Guangdong Power Grid Co.,Ltd.,Guangdong Maoming 525000,China)

机构地区：[1]广东电网有限责任公司茂名供电局,茂名525000

出　　处：《广西电力》2021年第2期95-99,共5页Guangxi Electric Power

基　　金：广东电网科技职创项目(项目编号030900KK52190010)。

摘　　要：本文使用对称分量法对110kV馈线单相断线故障进行了理论分析,得出此类故障的电气特征量,并结合实例分析了发生单相断线时变电站内继电保护及自动化装置的动作行为,指出目前变电站内继电保护及自动化装置对单相断线故障处理存在的不足,并提出了对策,为今后变电站继电保护的配置和设计提供参考,提高供电可靠性。The symmetrical component method is used to theoretically analyze the single-phase disconnection fault of 110 kV feeders,and the electrical characteristics faults of this kind are obtained.With real examples,the action behavior of the relay protection in substations when a single-phase disconnection occurs is analyzed.The shortcomings of the current method of single-phase disconnection fault handling through relay protection in substations are pointed out and countermeasures are proposed,providing a reference point for future configuration and design of the relay protection in substations,so as to improve power supply reliability.

关 键 词：单相断线 中性点过电压保护 备自投装置 供电可靠性 

分 类 号：TM77[电气工程—电力系统及自动化]