二次母线接有谐波源时谐波电流危害预测估算的分析

Analyse of Forecasting and Appraising the Harmonic Current Harm if the Secondary Bus Has Harmonic Source in the Mine Ground Power Substation

具有谐波源的变电所母线,谐波电流的危害程度.可用文中(1).(8).(9)式和表2简捷地进行分析、判断谐波的谐振次数、母线电压畸变率和谐波电流允许值,借以说明谐波电流危害。并用该三式对谐波调研资料进行了分析与对比计算,结果完全符合实际情况,故三式具有普遍意义和应用价值。

The bus in the power substation with the harmonic source and the harm level of harmonic current may use the equation (1)、(8)、(9) and list 2 in the paper to analyse and judge the syntony number of the harmonic, distorted rate of the bus voltage and approved value of the harmonic current to show how harmful the harmonic current is. Besides, we use the three equations to analyse and compare the data in harmonic investigation, the calculated result tallies with the actual situation completely. Therefore the three equations are of universal significance and practical value.