关键词: 本地功率, 实际功率, 异常用电, 实时监测

Abstract:

The unbalanced load results in electrical energy measurement error,which is commonly attributed to the line loss in master substation.This article presents a judgment of whether users have unbalanced load by and quantifies the measurement error.The voltage and current value in the power system of three-phase four-wire system power are calculated and the actual power is compared with the local power reference obtained by three-phase four-wire system power calculation to judge the existence of unbalanced load.It is important for anti-theft and loss reduction in power system.Simulations show that there is measurement error when users have unbalanced load,which results in a inadequate measurement of the electric energy consumed by such users.
[WT]

Key words: local power;actual power;abnormal electricity;real-time monitoring