Study on the Optimization of Primary Frequency Regulation for Micro-grid in Islanding Mode

Inhalt:
With time, the use of distributed energy has become a new trend in the power grid. Islanded micro-grids generally consist of wind, solar, diesel and battery. In this mode, the stability in frequency is poor, requiring the generator set to reserve a portion of the primary FM backup capacity. If the microgrid is built in an area with high penetration of distributed power supply, when the frequency problem occurs, it needs PV power and wind turbine with energy storage device to operate at reduced load, and then joint frequency regulation with diesel generator, which is harmful to the environment, so its capacity should be limited. The purpose of this paper is to minimize the cost of primary frequency regulation reserve capacity of micro-grids. Frequency regulation control mode is set according to the output forecast, and the opportunity constrained planning model is established and solved with genetic particle swarm algorithm (PSO) to obtain a scheme for optimal cost of primary frequency regulation reserve and energy storage allocation