Research on the Impact of Wind and Solar Characteristics on the Reliability of Microgrids

Currently, most of China's new energy sources are large-scale wind farms and photovoltaic power generation bases. The grid connection of such In order to ensure the reliability requirements of the power system, inevitable phenomena such as wind and solar curtailment often occur. In order to ensure the reliability requirements of the power system, inevitable phenomena such as wind and solar curtailment often occur, which not only affects the economic efficiency of the power system but also hinders the development of new energy. Studying the output characteristics of new energy, establishing a simulation model for power system operation that is suitable for large-scale new energy integration, and the development of new energy. suitable for large-scale new energy integration, improving the consumption capacity of new energy through optimized configuration of new energy, is conducive to the sustainable development of new energy. conducive to the sustainable development of new energy industry and the reliable and safe economic operation of power system. Therefore, this article will conduct research on reliability evaluation methods for new energy grids that have been added. Firstly, the difference between the new energy grid and the conventional power system lies in the fact that the new energy grids have been added. Firstly, the difference between the new energy grid and the conventional power system lies in the severe impact of weather. Historical meteorological data is used for analysis, and weather type clustering is carried out based on the characteristics of weather type. Historical meteorological data is used for analysis, and weather type clustering is carried out based on the characteristics of wind and solar power output. Secondly, analyze the influencing factors of wind and solar power generation, establish an indicator system to evaluate the complementarity of wind and solar power generation. Secondly, analyze the influencing factors of wind and solar power generation, establish an indicator system to evaluate the complementarity of the new energy grid, which is divided into reliability indicators and stability indicators, and then calculate the complementarity of the new energy grid. Secondly, analyze the influencing factors of wind and solar power generation, establish an indicator system to evaluate the complementarity of the new energy grid, which is divided into reliability indicators and stability indicators, and then calculate the complementarity indicators under different weather types and loads. Finally, with the maximum safety margin as the objective function and power balance, power limitations of renewable energy generators, reliability constraints, and stability constraints as constraints, the optimal wind and power balance will be realized. Finally, with the maximum safety margin as the objective function and power balance, power limitations of renewable energy generators, reliability constraints, and stability constraints, the optimal wind to solar integration ratio under this operating condition is found through particle swarm optimization algorithm. Finally, a microgrid in a certain region was used as an example for verification.