三相三线电能表误接线时更正系数中功率因数角的求法

Calculation for Power Factor Angle of Correction Coefficient in Misconnection of Three-phase-three-wire Watt-hour Meter

误接线是电能计量中严重的差错,会产生很大的计量误差。更正系数是补退电费的重要依据,但更正系数中的功率因数角也是未知数。本文提出用误接线时的有功表、无功表所计电量求解功率因数角的方法,进而可以求得更正系数及退补电量。

Misconnection is the most serious mistake in electrical power measurement. Correction coefficient is important to electric charge refund, but its power factor angle is unknown. This paper introduces the calculation method of power factor angle by using active power and reactive power in misconnection.