三相最大不平衡度对低压线损率影响的量化分析与应用

Quantitative Analysis of Influence of Three-phase Maximum Imbalance Degree on Low Voltage Line Loss Rate and Its Application

为了量化分析三相最大不平衡度对低压线损率的影响,分析三相不平衡度与线损增加率的关系,构建三相最大不平衡度与线损增加率的数学模型,采用消元分析法将模型等效转化,最终通过迭代法得出了二者之间的量化关系。某供电局实际应用情况表明,三相不平衡度与线损增加率的量化关系为整治三相负荷不平衡问题提供了理论依据。

In order to quantitatively analyze the influence of three-phase maximum imbalance degree on low voltage line loss rate,the relation between three-phase maximum imbalance degree and line loss increasing rate is analyzed and the mathematical model of three-phase maximum imbalance degree and line loss increasing rate is built.Elimination analysis method is used to equivalently transform the model.Finally the quantitative relation between three-phase maximum imbalance degree and line loss increasing rate is obtained by iteration method.Practical applications in a power supply bureau show that the quantitative relation between three-phase maximum imbalance degree and line loss increasing rate provides theoretical basis for the reduction of low voltage line loss rate and the regulation of three-phase load imbalance problem.