Research on the Mechanism of Reactive Circulation Generation and its Inhibition in New Energy Stations

With the rapid development of the new energy industry, the penetration rate of new energy continues to increase, and the static var generator (SVG) is widely used in new energy stations. The problem of SVG reactive power circulation is gradually becoming prominent. This paper studies the mechanism of reactive power circulation between SVGs based on two research scenarios: parallel operation of SVGs between T-connected new energy stations and parallel operation of SVGs within the same new energy station. For two different scenarios, the mechanism of reactive power circulation based on the influence of power flow constraints between grid nodes and inconsistent parameter settings is proposed. For each scenario, corresponding suppression measures are proposed and simulated in PowerFactory. The results show that the proposed suppression measures can effectively prevent or suppress reactive power circulation between SVGs. This paper innovatively proposes the mechanism of reactive power circulation between SVGs, providing a new research idea for suppressing reactive power circulation.