A Method of Distribution Reconfiguration with Micro Grid Considering Dynamic Behavior of Thermal Loads

With the development of distributed generation and micro grid, it has been demonstrated to be more reliable and economical that DGs are integrated into the traditional power grid based on micro grid. In this paper, a model suitable for the distribution reconfiguration containing micro grids is presented. To obtain a more realistic scheme on the reconfiguration, the impact of micro grid and dynamic behaviors of thermal loads on the distribution system reconfiguration are mainly concerned. Firstly, the model of distribution system with micro grid is presented. Based on the power supply capacity of micro grids, island partition strategies are proposed by depth-first search and breadth-first search. Secondly, the dynamic behaviors of thermal loads are modeled. Then a reconfiguration model of the distribution system with micro-grids and dynamic thermal loads is presented. Finally, IEEE 33-bus system is employed to validate the effectiveness of the presented method. The results improve that distribution integrated with MG is more reliable especially when a fault in feeder occurs.