方向元件在馈线自动化中的应用研究  

Research on the Application of Directional Elements in Feeder Automation

作　　者：马亮 明明 徐湘垒 刘锋 张鸿魁 MA Liang;MING Ming;XU Xianglei;LIU Feng;ZHANG Hongkui(State Grid Shangrao Power Supply Company,Shangrao 334000,China)

机构地区：[1]国网上饶供电公司,江西上饶334000

出　　处：《通信电源技术》2024年第4期78-82,88,共6页Telecom Power Technology

摘　　要：为提高配电网的供电可靠性,馈线自动化得到广泛应用和推广。随着供电可靠性要求的提高,出现了“电压时间型+继电保护”等具有一定优势的新型馈线自动化模式,在一定程度上缩短了故障处理时间。但是这种模式也存在一些缺陷,如在联络转供后发生新的故障时,原有的保护将会失去选择性,扩大停电范围。基于现场运行经验,将优化后的方向元件加入“电压时间型+继电保护”馈线自动化模式,并将原有的3段式保护扩展为6段式保护,前3段按照联络转供前的拓扑进行配置,后3段按照联络转供后的拓扑进行配置,并通过故障发生时方向元件的判断决定开放前3段保护还是后3段保护,解决了联络转供后保护失去选择性的问题,缩短了故障处理时间,提高了“电压时间型+继电保护”模式馈线自动化的故障处理效率。In order to improve the power supply reliability of distribution network,feeder automation has been widely used and popularized.With the improvement of power supply reliability,a new feeder automation mode with certain advantages,such as“voltage time type+relay protection”,has appeared,which has shortened the fault handling time to some extent.However,there are some defects in this mode,such as the loss of selectivity of the original protection and the expansion of the power outage range when a new fault occurs after the contact transfer.Based on the field operation experience,the optimized directional element is added into the feeder automation mode of“voltage time type+relay protection”,and the original 3-segment protection is extended to 6-segment protection.The first 3 segments are configured according to the topology before contact transfer,and the last 3 segments are configured according to the topology after contact transfer.By judging the directional element when a fault occurs,it is decided whether to open the first 3 segments or the last 3 segments,which solves the problem of loss of selectivity of protection after contact transfer,shortens the fault handling time and improves the efficiency.

关 键 词：方向元件 馈线自动化 继电保护 

分 类 号：TM76[电气工程—电力系统及自动化]