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Improved WLS-TF algorithm for dynamic synchronized angle and frequency estimation

机译:改进的动态同步角度和频率估计的WLS-TF算法

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This paper proposes an improved method for estimating synchronized angle and frequency under both steady-state and dynamic conditions based on the weighted least squares Taylor expansion Fourier (WLS-TF) method. The WLS-TF method using classical windows as weighting factors assumes the input signal is a narrowband band-pass signal, and it has efficient performance under most conditions. However, error arises when the signal is not a band-pass signal, which is the case for the waveforms of power system. This paper extends the band-pass signal model to a more general signal model that considers 2 order harmonic and proposes a new method to estimate the frequency. Examples of the proposed method are illustrated following different steady-state and dynamic conditions considered in power system.
机译:本文提出了一种改进的方法,用于基于加权最小二乘泰勒膨胀傅里叶(WLS-TF)方法在稳态和动态条件下估计同步角和频率的改进方法。 使用经典窗口作为加权因子的WLS-TF方法假设输入信号是窄带带通信信号,并且在大多数条件下具有有效的性能。 但是,当信号不是带通信信号时,出现错误,这是电力系统波形的情况。 本文将带通信信号模型扩展到更一般的信号模型,该模型考虑了2个次谐波,并提出了一种估计频率的新方法。 在电力系统中考虑的不同稳态和动态条件下示出了所提出的方法的示例。

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