Method for calculating power flow of power distribution networks

一种配电网潮流计算方法

Abstract

The invention provides a method for calculating power flow of power distribution networks. The method includes building node and branch information matrixes; carrying out current back-substitution updating and voltage push-forward updating on each node by the aid of progressive comparison processes; constructing error matrixes; comparing the error matrixes to convergence values to obtain power flow solution. The method has the advantages that parameters of the power distribution networks are known, and accordingly the node and branch information matrixes are easy to acquire; power of the various nodes does not need to be calculated in power flow calculation procedures on the basis of the progressive comparison processes, principles are simple as compared with Jacobian matrixes in Newton-Ralfson's methods, programming is easy to implement, the method is high in convergence speed and data accuracy, and precise power flow data can be provided for operation and maintenance staffs for the power distribution networks.
本发明提供一种配电网潮流计算方法,通过建立节点支路信息矩阵,利用渐进对比法,实现每个节点的电流回代更新和电压前推更新,构建误差矩阵,与收敛值比较,获取潮流解,由于配电网的参数已知,故获取节点支路信息矩阵较为简单。同时,本发明基于渐进对比法的潮流计算过程无需计算各节点的功率,与牛顿拉夫逊法中的雅克比矩阵比较,本发明的原理简单,编程实现简单,收敛速度快,数据精确度高,可为配电网运行维护人员提供更为确切的潮流数据。

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