Performance and Robustness Evaluation of the Resonance Suppression Strategy for the Photovoltaic Grid-connected System Based on the Entropy Weight Method

There are a large number of broadband resonance phenomena during the operation of new energy grid-connected systems. Therefore, the performance and adaptability of resonance suppression strategies in different resonance scenarios are of great significance. This paper proposes an evaluation of the performance and robustness of the resonance suppression strategy for photovoltaic grid-connected systems based on the entropy weight method. Performance indicators are constructed by considering the dynamic response characteristics of photovoltaic grid-connected systems. The performance and robustness of three suppression strategies are analyzed and compared in two scenarios: the LCL-type photovoltaic grid-connected system and the photovoltaic grid-connected system with a reactive power compensation device. The deficiencies in the performance and robustness of a single oscillation suppression strategy are revealed, providing a theoretical basis for the design of a flexible suppression strategy with adaptive design parameters.