Research on Dynamic Reactive Power Compensation System of Distributed Photovoltaic Inverter under Complex Working Conditions

A dynamic reactive power compensation system based on fuzzy adaptive PI control is proposed to improve the performance of distributed photovoltaic inverters in complex power grid environments. Firstly, the working principle of distributed PV grid-connected inverter and its function in reactive power regulation are analyzed. Then, a new fuzzy adaptive PI control algorithm is designed, which can adjust the control parameters according to the real-time state of the power grid to realize more efficient reactive power compensation. A set of dynamic reactive power compensation system is designed, which can adjust the control parameters adaptively according to the real-time state of the power grid and realize efficient reactive power compensation. The system can maintain a good reactive power compensation effect in a wider range of power grid voltage fluctuations, and significantly improve the stability and reliability of the distributed photovoltaic system. This study provides a new solution for reactive power compensation of distributed photovoltaic inverters under complex working conditions, and has important reference value for further research in related fields.