Mechanism analysis and control strategy of paralled SVGs to avoid reactive power circulation at the same station

With the increasing penetration of wind power, the application of SVG can meet the needs of reactive power compensation in new energy stations, but the parallel operation of multiple SVGs will bring about the problem of reactive power circulation. The problem of reactive power circulation will lead to the frequent occurrence of SVG overheating accidents and increase the power loss, which will cause huge economic losses. In practical engineering, the internal parameters of SVGs of different manufacturers and different models are different. At the same time, the reactive power circulation caused by the control of SVG itself, especially the inconsistent control parameters of two SVGs, will also cause reactive power circulation. This paper takes the parallel operation of two SVGs in the same new energy station as the research scenario, and puts forward the mechanism of reactive circulation based on inconsistent parameter settings. This paper provides a new research idea for restraining reactive power circulation and also puts forward the corresponding suppression measures of reactive power circulation, and makes a simulation analysis in DSL. This paper provides a new research idea for suppressing reactive power circulation.