Comprehensive Performance Assessment of Energy Storage Plants Based on Integrated Fuzzy Evaluation Method for Grid Peaking

Energy storage power plant has good static characteristics, can weaken the peak-to-valley difference through low storage and high generation, effectively relieving the peak regulation pressure of the power grid, and has important application value in the new power system. The performance of energy storage power plant in power grid peaking is judged reasonably, so that it has high economic efficiency, clean environmental protection value and safer power grid operation. First, a comprehensive evaluation index system of energy storage is constructed by proposing indicators covering technical, economic, clean and safety aspects for peaking scenarios. Then, the fuzzy integrated evaluation method was used to calculate the above indicators, and the improved coefficient of variation method was used to assign weights to each evaluation indicator during the calculation. Then, the fuzzy comprehensive evaluation method was used to calculate the comprehensive assessment of the energy storage power plants under the peaking scenario, and the assessment level and the assessment score of the energy storage power plants were obtained. Finally, a regional power grid is used as the object for simulation, and the evaluation grade and evaluation score of each performance of the energy storage power plant under peak regulation are obtained to verify the effectiveness of the proposed method.