Abstract：Modern power systems may experience untypical forced wideband oscillations, and traditional methods are difficult to identify the source of such forced oscillations. This paper proposes a universal identification method for forced oscillation sources based on voltage oscillation ratio (VOR), using wide-frequency measurement data provided by the broadband measurement system. The VOR is the ratio of the oscillation voltage amplitude relative to the steady-state voltage amplitude, which can effectively reflect the physical characteristics that the forced oscillation source has the maximum relative amplitude of oscillation voltage. This method is suitable for identification of low-frequency oscillation and sub/super-synchronous oscillation. This method is applicable in different voltage levels and can reduce the impact of measurement errors of transformers and broadband measurement devices. The effectiveness of this proposed method is verified through simulation cases and on-site cases.
陈玉林, 张杰, 杨利民, 王坤. 基于宽频测量数据和电压振幅比的强迫振荡源定位[J]. 电气技术, 2025, 26(3): 53-58.
CHEN Yulin, ZHANG Jie, YANG Limin, WANG Kun. Forced oscillation source identification based on wide-frequency measurement and voltage oscillation ratio. Electrical Engineering, 2025, 26(3): 53-58.
2025, Vol. 26 
