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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。
The setting of the relay protection devices for the high and low voltage side switches of the power transformer during the operation of Shanghai Metro Line 9 is analyzed. The fault problems are sorted out according to the operation conditions in the field and the matching of the relay protection devices is detailed Analysis and research. Through the analysis and calculation of protection matching, the corresponding rectification plan was found out. According to the rectification program, the functional verification after adjustment and the selective test of protective relay relay protection action are carried out, which effectively ensures the safe operation of the field equipment.