基于有功矩法的分布式电源优化配置方法

The Optimal Allocation Method of the Distributed Electric Sources Based on the Active Moment Method

分布式电源(distributed generation,DG)的接入使得配电系统从无源网络转变为有源网络,DG接入的位置、容量以及运行方式对配电网的节点电压、线路潮流、网络损耗等都有较大影响,因此对DG进行优化配置的研究有着重要意义。本文研究了DG的优化配置问题,从网损最小的目标函数出发,分别定义了有功二次矩和有功一次矩,建立了分布式电源优化配置的有功矩模型:按有功二次矩来确定分布式电源的安装位置,按有功一次矩来确定分布式电源的优化配置容量,并在IEEE33节点系统和69节点系统分别进行了仿真,验证了所提方法的正确性和有效性。方法的物理概念清楚、计算过程简捷可靠,具有实用价值。

The distribution system with distributed generation （DG）sources becomes active network. The size and place- ment of DG has important effect on the nodal voltage timal sizing and placement of DG. In this paper, the ,branch flow,power losses and so on. It＇s necessary to study the opquadratic and linear moment of real power are defined respectively for the optimization of DG. The model of the real power moment is established for optimal sizing and placement of DG. The optimal location of DG is determined by the quadric moment of real power and the optimal placement is determined by the linear moment of real power. This method is tested on IEEE 33 and 69 systems. The simulation results verify that this method is brief, correct and computationally efficient.