含分布式电源的弱环配电网快速潮流计算研究

Fast Power Flow for the Weakly Meshed Distribution Network with the Distributed Generation

配电网中分布式电源的引进,使得传统的潮流算法不再适用于新型网络。在对分布式电源运行机理和控制特点进行分析的基础上对其进行分类,建立起适合潮流计算的各类分布式电源模型。根据广泛适用于辐射网的前推回代计算方法,引入节点等效注入电流模型来简化潮流计算,算例表明改进算法对含有分布式电源的弱环配电网潮流计算是有效和可行的,且计算速度上还有一定的提高。

Introduction of the distributed power in distribution network makes the traditional flow algorithm no longer suitable for the new type of network. On the basis of analyzing the operation mechanism and control characteristics,distributed power generation is classified and then various models are established accordingly for the flow calculation. According to the forward/backward sweep algorithm which is widely used in distribution network's flow algorithm, the injection current model of the equivalent node is introduced to simplify the flow calculation. The result shows that the presented method is feasible and effective in calculating the flow of the weakly distribution system with multi-type DGs.