普侨特高压直流工程直流保护动作信号无法复归的原因分析及改进措施  

Cause Analysis and Improvement Measures of Relevant Signals Unable to Reset After DC Protection Action in Pu-Qiao UHVDC System

作　　者：彭腾 PENG Teng(Guangzhou Bureau,EHV Power Transmission Company,Guangzhou 510405,China)

机构地区：[1]中国南方电网超高压输电公司广州局,广东广州510405

出　　处：《电工技术》2021年第24期173-174,177,共3页Electric Engineering

摘　　要：针对±800 kV普侨特高压直流工程直流保护动作后相关信号无法复归事件,分析信号产生及无法复归的原因为直流保护出口冻结后,无法手动复归保护,最后提出了修改程序逻辑的改进措施及运维人员快速处置此类故障的方法。After the DC line protection action,the relevant signal cannot be reset in±800 kV Pu-Qiao UHVDC System.The reason for signal generation and failure to reset is that the protection cannot be reset manually after the DC protection outlet is frozen.Finally,the improvement measures to modify the program logic and the methods for operation and maintenance personnel to quickly deal with such failures are proposed.

关 键 词：直流线路纵差保护 DISA功能块 TDM总线故障 

分 类 号：TM721[电气工程—电力系统及自动化]