配电网潮流的混合模型降规模计算

为了减少大规模配电网潮流分析的计算量,在分析了等效电压降落模型法(VDM)和等效线损模型法(LLM)的基础上,提出了二者相混合的配电网潮流算法.该方法的计算精度比较高,可大大减少参与迭代计算的节点数,而且各负荷点的电压以及配电网的线损不需迭代就可以直接计算得到,从而精确得到整个配电网的线损.经过对IEEE中30节点的实际配电网的计算,验证了该方法的有效性.

Reduced Calculation of Power Flow for Distribution Networks Based on Hybrid Model

In order to reduce the calculation amount of power flow in large-scale distribution networks,a method of power flow algorithm hybrid model of voltage drop model(VDM) and line losses model(LLM) is presented after analyzing VDM and LLM.By using the presented method,the number of nodes having a hand in the iteration is obviously reduced;and the voltage at each load point and the line losses of distribution network can be directly obtained without iteration;thereby the line losses of the whole distribution network can be accurately determined.The calculation results show that the presented method is effective through a calculation of a real distribution network with 30 nodes in IEEE.