Through theoretical analyses , the zero - phase - sequence current is the reason of the metering error 理論分析這一誤差的產(chǎn)生是由于零序電流的存在。
In the electric power system of neutral point effectively , if parameter is not symmetric , the zero - phase - sequence current will appear 在中性點(diǎn)有效接地系統(tǒng)中,如果參數(shù)不對稱就會產(chǎn)生零序電流。