辐射型配电网重构的功率矩法

The power moment method for radial distribution network reconfiguration

研究了配电网的重构方法。根据配电网'闭环设计,开环运行'的特点,提出了阻抗距离、广义负荷、功率矩的概念,建立了配电网的功率矩模型。通过理论分析,得出了配电网功率矩均衡与优化的关系,即配电网运行的优化程度取决于功率矩的均衡程度,进而提出了基于功率矩均衡的配电网重构方法。该方法不需进行费时的潮流计算,不受网络初始结构的影响,充分利用了配电网的特点。只需根据网络和负荷参数经过少量简单计算即可得到重构结果,具有实用的潜力。典型配电系统算例的测试结果验证了该方法的正确性和有效性。

The optimal algorithms of distribution network reconfiguration are researched.According to the distribution network’s feature,i.e.closed-loop designing and opened-loop running,the concept of impedance distance,generalized load and power moment are defined,the distribution network’s power moment model is also established.Through theoretical analysis,the connection of network’s optimization and power moment is discovered,that the optimization result of distribution network operation is determined by the pry bar balance degree of power moment,then a new network reconfiguration method is put forward.This method uses the distribution network’s characteristic and is not affected by network’s initial structure.The solution procedures become very simple and fast,because the conventional procedures of load flow calculation are reduced.It is simple and direct for analysis and calculation in radial distribution network.The effectiveness of proposed method is verified by typical distribution systems.