刘鹏翔,罗宇恒,贾燕冰.基于EWT和改进Prony算法的含风电区域电网低频振荡模态及影响因素研究[J].电测与仪表,2021,58(5):46-54. Liu Pengxiang,Luo Yuheng,Jia Yanbing.Research on low-frequency oscillation mode and influencing factors of inter-area power grid containing wind power based on EWT and improved Prony algorithm[J].Electrical Measurement & Instrumentation,2021,58(5):46-54.
基于EWT和改进Prony算法的含风电区域电网低频振荡模态及影响因素研究
Research on low-frequency oscillation mode and influencing factors of inter-area power grid containing wind power based on EWT and improved Prony algorithm
The increasement of the wind power penetration rate in regional inter-area power grid reduces the inertia of the power system. Meanwhile, due to the increasing random volatility and uncertainty of wind power, the fluctuation range of transmission power between regional power grids is expanded. The identification method and influencing factors of the low-frequency oscillation mode of the regional power grid containing wind power need to be studied in depth. The low-frequency oscillation mode identification method based on the empirical wavelet transform (EWT) and improved Prony method is proposed. And the influences of the change of inertia of the power grid and the fluctuation of wind power on the inter-area oscillation mode are analyzed in the extended four-machine two-area system. Based on the study of the influence of virtual inertia control parameters of doubly-fed wind turbines on the oscillation mode under the limit of transmission power, a virtual inertia parameter setting value for suppressing low-frequency oscillations of regional power grids containing wind power is proposed.
