上海轨道交通9号线变电所变压器开关的保护匹配

Relay Protection of Transformer Switch in Substation of Shanghai Rail Transit Line 9

对上海轨道交通9号线运行中的动力变压器高、低压侧开关的继电保护装置的设定进行了分析,根据现场运行情况对故障问题进行梳理,并对继电保护装置的匹配性进行详细的分析和研究。通过对保护匹配问题进行分析和计算,找出了相应的整改方案。根据整改方案进行了调整后的功能验证及保护开关继电保护动作的选择性检验,有效地保证了现场设备的安全运行。

This paper introduces the relay protection of transformer＇s breaker, summarizes the relative site problems in passenger stations during the operation period of Shanghai metro Line 9. The matching parameters in relay protection devices between primary and secondary transformer have been calculated through expressions. According to the result, the paper puts forward a regulative scheme which has testified the selectivity and characteristic of the relay protection, and will guarantee the safe operation of relay protection devices in service.