SUN Yan-zhou, QIU Yu-chang. MEASUREM ENT OF CAPACITIVE CURRENT IN POWER DISTRIBUTION NETWORK[J]. High voltageapparatus, 2002, (5): 27-28+32.DOI:
MEASUREM ENT OF CAPACITIVE CURRENT IN POWER DISTRIBUTION NETWORK
摘要
对采用相对地附加电容测量配电网电容电流的方法进行了误差分析
并提出减小误差可采取的措施。介绍了从二次侧测量配电网电容电流的方法
根据情况可分别从消弧线圈的零序PT或电网的PT开口三角端注入变频恒流信号
从而计算出电容电流。
Abstract
One method for measuring the capacitive current by using an additional capacitor in power distribution network is analyzed.Some possible measures to reduce errors are given.Another method by injecting current with variable frequency is introduced in this paper.