风电参与的电力系统次同步振荡机理研究综述和展望

风电参与的新型次同步振荡事故频发，严重影响了新能源电力系统的安全稳定运行。结合次同步振荡所对应的数学动力学模型、轨线特征，分析归纳风电参与的电力系统次同步振荡的机理分类，即负阻尼振荡、强迫振荡、切换型振荡和其他复杂振荡，并从参数变化角度给出对应的分岔类型；进一步地，基于上述风电参与的新型次同步振荡机理分类，分别阐述对应上述机理的分析方法研究现状；最后，针对目前研究较少的风电参与的切换型次同步振荡，从分段光滑模型及其动力学机理、非光滑分岔分析方法、物理特性、实测验证等角度，给出其研究展望。

Review and prospect of research on sub-synchronous oscillation mechanism for power system with wind power participation

The frequent occurrence of new types of sub-synchronous oscillation involving wind power has seriously affected the safe and stable operation of the new energy power system. The mathematical dynamic model and trajectory characteristics are combined to summarize the mechanism classification of sub-synchronous oscillation of power system with wind power participated, namely, negatively damped oscillation, forced oscillation, switched oscillation and other complex oscillations. The corresponding bifurcation types from the perspective of parameter variation are provided. Furthermore, the research status of the analysis method with respect to the mechanism is described based on the above mechanism classification. Finally, regarding the switched sub-synchronous oscillation involving wind power that has not been widely studied, the research prospect is given in terms of piecewise smooth model and its dynamic mechanism, non-smooth bifurcation analysis method, physical characteristics and actual measurement verification.