辐射型配电网重构的启发式算法

研究了配电网的重构方法。根据配电网的特点，在配电网二次电流矩模型的基础上，利用从二次电流矩平衡角度分析得出的结论，通过理论分析，得出一种新的配电网重构方法。方法表明：在配电网重构中，环网无功功率分点两侧电流最小的支路即为需要断开的支路。该方法不需考虑网络拓扑的约束，不受网络初始结构的影响，确定一个断开开关只需计算一次潮流，因而能有效提高求解速度。与二次电流矩方法相比，本文所提方法计算过程更加简捷、计算量更小。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。

Probe into the Heuristic Algorithm for Radial Distribution Network Reconfiguration

The optimal algorithms about distribution network reconfiguration are researched. According to the feature of distribution systems, on the base of distribution networks＇ quadratic current moment model, using the conclusion drew by analyzing the quadratic current moment＇s balance, a new algorithm for the distribution network reconfiguration is proposed based on theory analysis. The method indicates that the optimal breaking circuitry is in the side of reactive power bifurcation node. The proposed method is not affbcted by network＇s initial structure, and the restriction of network＇s topology may not be considered. Furthermore, a disconnection switch is confiruled by calculating network＇s load flow only once, so it can effectively improve calculating rate. Compared with the quadratic current moment method, this method has a more simple calculation process and smaller calculation quantity. The effectiveness of the proposed method is verified by typical case study results on distribution system.