Stochastic Planning Method of Energy Storage Capacity of Networked Microgrid Considering Power Supply Risk

When planning the energy storage capacity of the microgrid, the remaining electric power of the microgrid is too high or too low because the comprehensive output power is too low. For this, the stochastic planning method of the networked microgrid is proposed. Combined with the volatility of the power generation, the integrated output power of microgrid is taken as an index to evaluate the power supply risk of networked microgrid. In the energy storage capacity planning stage, the internal and external double layer structure is set for the optimal energy storage capacity and no power supply risk. When there is no synchronous increasing relationship between the optimization results of the two, it is taken as the final output result. The experimental test found that the proposed method can effectively adjust the relationship between load and renewable energy, improve the energy utilization efficiency and power supply stability of micro-grid, and has certain application value.