一起10kV母线电压测量值偏低的原因分析及排查

Cause Analysis and Elimination for Relatively Low Measured Value of the Voltage of 10 kV Bus

引起母线电压测量值偏低的原因有多个,必须逐一进行分析排查。结合江苏洪泽供电公司发生的一起10 kV母线电压测量值严重偏低的异常情况,对其原因进行分析,逐一排查,找出了易被忽略的高压熔丝电阻偏大的隐性原因,并据此提出合理的现场应对措施。

There are several factors leading to relatively low measured value of bus voltage,so the cause analysis and elimination are necessary. Based on the accident of relatively low measured value of the voltage of 10 kV bus in Jiangsu Hongze Power Supply Company,the recessive reason that the resistance of high-voltage fuse is too large was found out through analysis and elimination. Thus, the reasonable treatments are put forward.