备自投异常动作分析及改进  

Analysis and Improvement of the Standby Automatic Switching

作　　者：林久通 李红霞 Lin Jiutong;Li Hongxia(State Grid Zhjiang Electric Power Company Hangzhou Power Supply Company,Hangzhou,China)

机构地区：[1]国网浙江省电力公司杭州供电公司,浙江杭州

出　　处：《科学技术创新》2023年第18期221-224,共4页Scientific and Technological Innovation

摘　　要：本文介绍备自投动作原理、设计要求及与其他继电保护配合关系,并进一步探讨了备自投在运行过程中的误动、拒动可能原因。在此基础上,分析了两起备自投装置不正确动作案例。针对误动情况,提出在无压无流基础上增加主变低压侧开关分位的启动逻辑判据;针对由于接线错误导致拒动的情况,提出完善的管理措施。This article introduces the principles,design requirements,and cooperation relationship with other relay protections of the standby automatic switching devices,and further explores the possible reasons for rejecting and incorrect actions of the devices.On this basis,two cases of incorrect operation were analyzed.In response to the rejecting actions,a criterion of the opening low-voltage side switch of the transformer is added to the startup logic on the basis of no voltage and no current;In response to the incorrect actionscaused by wiring errors,comprehensive management measures were proposed.

关 键 词：备自投 动作条件 闭锁条件 继电保护 

分 类 号：TM762.1[电气工程—电力系统及自动化]