PSS对水电厂并网稳定性改善的研究

Study on PSS for Improving the Stability of Hydropower Plant Connecting to Grid

水电厂作为可再生能源中的主力得到快速发展,但水电厂运行的稳定性问题成为抑制水电发展的重要因素,针对水电厂的并网稳定性问题,本文提出采用PSS 投入对抑制水电厂的低频振荡进行改善,通过建立仿真模型对大中小型水电厂的低频振荡问题进行深入研究,由仿真结果分析PSS 对水电厂低频振荡的抑制都有很好效果,提高了水电厂的稳定运行,最后通过实际工程应用对水电厂出现低频振荡事故提出了有效的防范措施,为水电厂安全稳定运行提供参考。

With the rapid development of global energy interconnection, renewable energy has become the focus of development, so hydropower plants as the main force of renewable energy have developed rapidly, but the stability of hydropower plant operation has become an important factor to inhibit the development of hydropower. The PSS input is used to improve the suppression of low frequency oscillation in hydropower plants. Through the establishment of simulation model, the problem of low frequency oscillation in large and medium-sized hydropower plants is deeply studied. The simulation results show that PSS has a good effect on the suppression of low frequency oscillation in hydropower plants, and improves the stable operation of hydropower plants. Finally, through practical engineering application. Effective precautions against low frequency oscillation accidents in hydropower plants are put forward, which can provide reference for safe and stable operation of hydropower plants.