Review on reliability evaluation of new distribution system with micro-grid

The features of distributed generation and micro-grid are described and the new research progress of micro-grid is summarized.The integration of micro-grid changes the radial topology of distribution system and causes the bidirectional power flow.The island operation of micro-grid and the uncertainty of distributed generation output power within micro-grid bring new problems to the reliability assessment of distribution system.Limitations of current researches are summarized,such as the distribution generation modeling without the interactions between micro-grid and distribution system,the islanding strategy and the load modeling,which impede the application to micro-grid.Some research topics are proposed for the reliability assessment of micro-grid and distribution system with micro-grid:reliability assessment index system of the new distribution system with micro-grid;micro-grid operation modes and operating characteristics and their influences on distribution system;reliability modeling for distributed generation and micro-grid considering their operating characteristics;reliability assessment model of distribution system with multiple power sources and its accurate and efficient algorithm.