Abstract: The uncertainty of distributed renewable energy generation has brought serious negative influence on the optimization planning of microgrid system. This paper studies the robustness constraints based on the deviation between real deviation and estimated deviation of distributed generation, constructs the robust optimization model with system planning cost and operation cost as objective function, and proposes related NSGA-II optimization algorithm. At last, the example analysis results show that the proposed robust optimization model can get the optimal system planning scheme under the certain conditions of robust constraints and system operation constraints, which can provide decision basis for the robust optimization planning of microgrid system.

Key words: microgrid, robust optimization, distributed generation, NSGA-II algorithm