芝堰变500 kV两段母线压差偏高的分析

摘要

Voltage monitoring and reactive voltage regulation and control is an important task in power system operation and control. According to 500 kV 3/2 connection of Zhiyan transformer substation, maximum theo-retic bus voltage difference is calculated. Through one-by-one examination of all links of voltage acquisition, the cause of excessive voltage difference of 500 kV buses in Zhiyan transformer substation is detected, name-ly the excessive error of bus measurement and control device. After accuracy regulation, the voltage differ-ence returns to normal scope.%电压监视和无功电压调节控制是电力系统运行控制的一项重要的基本任务，根据芝堰变500 kV 3/2接线方式，推导出母线压差计算公式，对母线最大理论压差进行了计算；从电压采集的各个环节，逐一进行排查，最终查找出芝堰变500 kV母线压差过大的原因是由于母线测控装置误差超标，对精度调整后压差回复到正常范围。