东善桥变220kV母差保护改造风险分析与控制

以东善桥500kV变电站220kV母差改造工程为例,深入分析在改造过程中所遇到的危险点.详细分析现场工作环境,制定相关的施工环节,严格控制危险点,在保证旧母差保护正常运行的基础上,安全、可靠的接入新母差保护装置,同时对旧的二次回路优化改造,实现220kV母差保护双重化配置,有效提高了东善桥变电站220kV母差保护和失灵保护动作的可靠性.

Risk analysis and control of 220kV bus differential protection in the east of the East

The 500kV bus differential reconstruction project of 220kV substation of East good bridge is an example,which analyzes the danger point encountered in the process of transformation.A detailed analysis of the work environment,formulate the relevant part of the construction,strictly control the risk,to ensure the old bus differential protection based on the normal operation,safe and reliable access to a new parent differential protection device, at the same time on the two loop optimization transformation of the old, the realization of 220kV bus differential protection dual configuration,effectively improve the reliability of the dongshanqiao substation 220kV bus differential protection and failure protection action.