考虑风机出力随机性的微电网最大负荷支撑

In case of over-limit and oscillation of frequency and voltage due to serious fault in large power network，micro-grid would turn into islanded operation mode. The research of maximum load an islanded micro-grid can supply is significant for both reliable and economic requirements. This essay proposes the concept of capacity margin for stable operation of islanded micro-grid and a load shedding scheme which considers load weight coefficient. The binary particle swarm optimization is applied to optimize the structure of micro-grid with objective function of the minimum economic losses in the case of electricity shortage of micro-source. Results obtained from medium voltage micro-gird are presented to verify the effectiveness of this strategy.