湖北电网2021年220 kV及以上电压等级继电保护设备运行情况分析

Operation Analysis of Relay Protection Equipment with Voltage Levels of 220 kV and above in Hubei Power Grid in 2021

继电保护作为电力系统的第一道防线,是电力系统的重要组成部分。着重对2021年湖北电网保护装置微机化、国产化、设备运行年限、保护正确动作率、继电保护设备缺陷异常情况等方面作了细化分析,全面总结了2021年湖北电网220 kV及以上系统继电保护装置规模和运行情况,对近3年来220 kV及以上继电保护有关指标的变化趋势进行了深入分析。

As the first line of defense of power system,relay protection is an important part of power system.This paper focuses on the detailed analysis of Hubei power grid protection device in 2021 in terms of computerization,localization,equipment operation life,correct operation rate of protection,and defects and abnormalities of relay protection equipment,and comprehensively summarizes the scale and operation of relay protection devices for 220 kV and above systems of Hubei power grid in 2021.Finally,the paper analyzes in depth the change trend of relay protection-related index of 220 kV and above in recent 3 years.