220kV母线PT断线告警的案例分析  

Case Study on PT Disconnection Alarm of 220kV Busbars

作　　者：张明凯 ZHANG Mingkai(State Grid Yancheng Power Supply Company,Jiangsu 224000,China)

机构地区：[1]国网盐城供电公司,江苏224000

出　　处：《电子技术（上海）》2024年第9期110-111,共2页Electronic Technology

摘　　要：阐述双母线接线形式的系统需要根据运行状态而调整二次电压,为了防止电压损失,电压切换箱中经常会安装一个自保持继电器。为此,分析新扩未验收设备对220kV线路母线PT断线告警的影响。This paper expounds that the system with dual busbar connection needs to adjust the secondary voltage according to the operating status. In order to prevent voltage loss, a self holding relay is often installed in the voltage switching box. It analyzes the impact of newly expanded and unaccepted equipment on the PT disconnection alarm of the 220kV line busbars.

关 键 词：双母线接线 断线告警 自保持继电器 

分 类 号：TM645[电气工程—电力系统及自动化]