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    • 2. 发明公开
    • Method and arrangement for estimating angular frequency
    • Verfahren und Anordnung zurEinschätzungder Winkelfrequenz
    • EP2372376A1
    • 2011-10-05
    • EP10158614.7
    • 2010-03-31
    • ABB Research Ltd
    • Escobar, GerardoCoccia, AntonioSerpa, Leonardo-AugustoPettersson, SamiDe-Novaes, Yales
    • G01R19/25
    • G01R23/02G01R19/2513
    • Method and arrangement for estimating the frequency and the positive sequence of a fundamental component of a measured three-phase voltage (ν αβ ) the method comprising the steps of measuring the three-phase voltage (ν αβ ), calculating estimates of the fundamental frequency voltage component (ν̂ αβ,1 ) and the difference (ϕ̂ αβ,1 ) between positive and negative sequence components of the fundamental frequency voltage from the error (ν̂ αβ ) between the measured three-phase voltage (ν αβ ) and the calculated estimate of the fundamental frequency voltage component (ν̂ αβ,1 ) and from an estimate of the angular frequency (ω̂ 0 ) of the fundamental voltage component, wherein the estimate of the angular frequency (ω̂ 0 ) of the fundamental voltage component is calculated from the estimated difference (ϕ̂ αβ,1 ) and from the error (ν̃ αβ ) between the measured three-phase voltage and the calculated estimate of the fundamental component.
    • 用于估计测量的三相电压(½±²)的基波分量的频率和正序的方法和装置,该方法包括以下步骤:测量三相电压(½±²),计算基波 频率电压分量(½±²,1)和基频电压的正负序分量之间的差(Õ±²,1)从测量的三相电压(½±²)之间的误差(½±²) )和基频电压分量(½±²,1)的计算估计值和基本电压分量的角频率(É0)的估计,其中基频的角频率(É0)的估计 根据估计的差(Õ±²,1)和测量的三相电压与基本分量的计算估计之间的误差(½±²)计算电压分量。