Research on Resonance Stability Analysis of Offshore Wind Power Transmission System Considering the Influence of Reactive Power Configuration

Offshore-wind-farms(OWT) use submarine cables to connect to the grid, and the capacitive effect of the cables makes their harmonic resonance problems prominent. First, the mechanism of the resonant overvoltage of the transmission system is analyzed, and the equivalent-harmonic-model of this offshore wind farm is set up by harmonic modeling of every internal component of offshore-wind-farm. Subsequently, a coordinated reactive power control strategy is proposed. Finally, taking an offshore-wind-farm as an case, this proposed control strategy was used to analyze the resonance mode existing within it, and the influence of wind-turbine capacity ratio and this installation position of this reactive power compensation equipment was mainly considered, verifying the proposed method. applicability. It can save this spend of reactive-power-compensation setup. The reactive power overvoltage suppression of the entire long-distance submarine cable line is achieved and the quality of the power supply voltage is improved.