用推算法间接测量电压互感器计量误差

Indirect Measurement of Voltage Transformer Metering Error by Reckoned Method

论述了电压互感器在系统停电情况下,分别在额定负载和1/4额定负载时,对电压互感器进行误差测试,通过测量得到不同电压数值下的比差和角差;再通过测量得到电压互感器实际二次负载数据,采用推算法间接测量出电压互感器在实际二次负载下的计量误差。

Under the condition of power failure, the measure errors have tested in rated load and 1/4 rated load respectively. Based on the different ratio error and angle error got by the tests, and the actual parameter measured by second loop test, the actual metering error of voltage transformer in second loop can be detected by reckoned method indirectly.