基于电流叠加法的网损分摊算法

Method for allocation of power losses based on current superposition arithmetic

提出基于线性电路叠加原理的功率贡献计算方法,用各电源共同作用时的负载电压与单独作用时的负载电流的乘积表示电源对负载的功率贡献,并用这种方法解决电力市场中的网损分摊问题。用电源共同作用时的线路压降和单独作用时的线路电流的乘积计算各个电源在各条支路上引起的网损,计算系统网损在各个电源中的分摊。根据电源对负荷的功率贡献因子计算电源和负荷分别承担网损及它们按比例承担时的系统网损分摊。该方法原理简明、计算量小、方便灵活、合理性强。以IEEE-14节点系统为例进行仿真计算,验证了该方法的合理性。

A novel method based on superposition principle of linear circuit was proposed to allocate the power losses. Method of current superposition was used and power contribution of each power source was represented by the product of total voltage and individual current. The net loss of each branch caused by individual power source was computed by the product of total voltage drop and individual current. Losses allocation between the power sources and loads in certain percentage was calculated on the basis of the factors of contributions of individual generators to loads. The allocation of the active power losses and that of the reactive power losses can be calculated at the same time. The simplicity and good adaptability of the method is obvious. The rationality of the method is proved by the examples of IEEE 14 bus system.