Research on Bi-level Optimal Operation of Microgrid in Distribution Network

摘要

In view of the current large-scale centralized wind power and photovoltaic power generation in different regions of China, there is a serious phenomenon of abandoning wind and photovoltaic power, in order to enhance the capacity to absorb wind/photovoltaic power, this paper establishes a bi-level optimal operation model with source-load interaction in the framework of AC/DC hybrid microgrid connected to the distribution network. In load level, demand response model based on time-of-use price is introduced to satisfy users satisfaction as a premise, which guides users to change their electricity consumption habits so as to make certain shift in load and improve the accommodation rate of wind/photovoltaic power; The source level uses the output of the wind turbine, photovoltaic array, micro turbine and fuel cell as the decision variables and the daily economic cost as the objective function to obtain the optimal output combination. Finally, Based on the power consumption data of industrial users in a certain area, this linear optimization model is simulated and solved by using MATLAB, and simulation results verifies the validity and rationality of the proposed optimization operation model.