10kV架空配电线路电压损失和功率损失估算

Estimation of Voltage Loss and Power Loss of 10 kV Overhead Distribution Line

10 kV架空配电线路的电压损失和功率损失能够作为线路改造必要性的重要依据。笔者在损失系数法的基础上推导出同时含有集中负荷和分布负荷的电压损失和功率损失的计算方法,然后对10 kV线路主干线进行分段和编号,并参考前推回代法对10 kV架空配电线路的电压损失和功率损失进行估算。以广西农村地区某10 kV线路作为算例,将采用该文方法估算结果与潮流计算结果进行比较分析,得出估算结果与潮流计算结果相差不大且收敛性能良好的结论。

The voltage loss and power loss of 10 kV overhead distribution line can be used as an important basis for the necessity of line transformation.Based on the loss coefficient method the calculation method of voltage loss and power loss with concentrated load and distributed load is deduced.Then the voltage loss and power loss of 10 kV overhead distribution line can be estimated by segmenting and numbering the main line of 10 kV line and referring to the forward and backward substitution method.Taking a 10 kV transmission line in rural areas of Guangxi as an example the estimation results are compared with the power flow calculation results.It is concluded that the estimation results are similar to the power flow calculation results and the convergence performance is good.