完善虚回路设计提升线变组方式下保护配合可靠性  

Improve the Virtual Circuit Design and the Reliability of Protection Coordination under the Mode of Changing Unit of Line Transformer

作　　者：刘雪飞[1] 张杰[1] 商敬安 潘琦 陈建[1] LIU Xuefei;ZHANG Jie;SHANG Jingan;PAN Qi;CHEN Jian(State Grid Tianjin Electric Power Company,Tianjin 300000,China)

机构地区：[1]国网天津市电力公司,天津300000

出　　处：《自动化应用》2023年第1期152-154,共3页Automation Application

摘　　要：通过分析线变组方式下钱路保护、断路器保护、主变保护、智能终端间虚回路设计情况,以及部分保护异常时其余保护装置的动作行为,提出通•过合理调整虚回路设计,规避部分保护异常情况下其他保护的异常动作行为,提高二次系统整体配合度和运行可靠性。This paper analyzes the design of line protection,circuit breaker protection,main transformer protection and virtual circuit between intelligent terminals under the mode of line transformer unit,and the action of other protection devices when some protections are abnormaL According to this,it is proposed that by adjusting the virtual circuit design reasonably,the abnormal action behavior of other protections under abnormal conditions of some protections can be avoided,and the overall coordination degree and operation reliability of the secondary system can be improved.

关 键 词：智能变电站 虚回路 保护配合 

分 类 号：TM63[电气工程—电力系统及自动化]