Optimization of inverter control strategy based on low voltage control device of rural power grid

With the development of science and technology, the power system structure of rural power grid is becoming more and more complex. Due to the long power supply radius of rural power grid, uneven load distribution, aging equipment and other reasons, the voltage fluctuation problem of terminal power grid is particularly prominent. In order to ensure that the user side voltage meets the national standard, the synchronous inverter control strategy of the low voltage control device of the rural power grid becomes the key point of the low voltage control device of the rural power grid. In this paper, an optimization of inverter control strategy based on low voltage control device of rural power grid is considered. First, the model of single-phase voltage half-bridge inverter circuit is established. Secondly, the PI-P control strategy commonly used in traditional industry is established, and its shortcomings are pointed out by analyzing the voltage loop bod diagram. Secondly, PR-P control strategy is established to analyze and compare the frequency domain. Finally, the optimized control strategy is verified by simulation and experiment. The final results show that the optimized strategy can better stabilize the voltage waveform on the user side, and realize the stable operation of the low voltage treatment device in rural power grid..