Research on the Reactive Voltage Mixing Control Strategy of the Distribution Network for “Source-Grid-Load-Storage”

Abstract

With the rapid development of distributed energy, due to the intermittent, random, and strong volatility of distributed energy, the grid connection of distributed energy will lead to reverse currents and cause power quality problems such as voltage crossing limits if the power is not consumed. This paper analyzes the impact of “source-grid-load-storage” resources on the power grid based on the “source-grid-loadstorage” interactive regulation system of a city. Using reactive power compensation as the regulation tool, a coordinated control framework is designed, and a coordinated and optimized control strategy is proposed to adapt to multiple operation scenarios, as well as a centralized optimization strategy and specific processes targeting active and reactive power. It effectively solves the problem of power consumption of distributed energy and the problem of power quality such as voltage crossing limit. To some extent, it alleviates the problem of new energy consumption. At the same time, the operation strategy of the “source-grid-load-storage” regulation system is optimized, so that the operation of the “source-grid-load-storage” regulation system is more reasonable. It promotes the development of new energy technologies and helps to achieve the goal of “carbon peak and carbon neutrality”.