Analysis of Optimized Dispatching of Micro-Grid

Faced with the growing demand for electricity and the shortage of fossil fuels, the development of new sustainable renewable energy has become an urgent need. Some environment-friendly energy source, such as wind power and solar power, becomes increasingly mature. Renewable energy is divided into large-scale centralized access and distributed access according to its access to the power system. Distributed access is mainly used in micro-grid, which refers to a small power distribution system consisting of distributed power supplies, energy storage devices, energy conversion devices, loads, monitoring and protection devices. How to properly manage the micro-grid internal distributed power and energy storage operation, to achieve micro-grid economy, technology, and environmental efficiency maximization has become an important research topic. The economic scheduling problem recently refers to consider the grid side of the time-sharing price, then make full use of micro-grid batteries and other means of control to achieve the optimal economy operation under the forecast of the wind power output, photovoltaic output, and conventional load on a day (the next 24 hours). Based on a micro-grid system consisting of fan, PV, battery and conventional load, this paper analyzes the optimal everyday scheduling of each part of micro-grid and propose a scientific and reasonable strategy to ensure the comprehensive benefit of multiple stakeholders.