Research on the Effect of Renewable Energy Reactive Output on the Voltage Support of the Power Grid

Under the promotion of the national dual carbon strategy, the grid connection technology of renewable energy generation has gradually become a research hotspot. Renewable energy power generation has intermittency and uncertainty, and connecting to the system can easily cause bus voltage fluctuations, posing new challenges to system reactive power and voltage stability. This article theoretically derives the mechanism of the reactive power output from the renewable energy machine on the voltage stability support of the grid connection points, proposes a voltage reactive power sensitivity analysis model, and further verifies the impact of the renewable energy reactive power output on the voltage stability of each grid connection point in the system and the accuracy of the model through simulation analysis of renewable energy access system examples.