距离保护远后备功能可靠性分析  

Reliability Analysis of Distance Protection Remote Backup Function

作　　者：许德操[1] 袁志毅[1] 吴永刚[1] 

机构地区：[1]青海省电力公司电力调度中心,青海西宁810008

出　　处：《青海电力》2009年第3期1-3,19,共4页Qinghai Electric Power

摘　　要：为了对110 kV长线路末端变压器起到远后备功能,部分保护设备采用圆阻抗距离继电器和四边形距离继电器相或构成距离继电器。文章从原理分析、动模实验对此类保护功能可靠性进行试验研究,试验结果证明,110 kV线路末端采用Y△/类型接线的变压器低压侧故障时能够正确动作,起到远后备的功能。As the remote backup protection for the transformer on the end of 110kV long transmission line, parts of protection structure adopt distance relay with circular characteristics and quadrangle characteristics composing the distance relay, the paper makes test and research on the reliability of the protection based on dynamic simulation and principle analysis. The test result proved that the transformer on the end of 110kV transmission line adopts Y/△ wir- ing obtains accurate action when the low voltage side fault, and it will implement remote backup function.

关 键 词：动模试验 距离继电器 远后备 

分 类 号：TM773[电气工程—电力系统及自动化]