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

机译:用于动态同步角度和频率估计的改进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:本文提出了一种基于加权最小二乘泰勒展开傅立叶(WLS-TF)方法估计稳态和动态条件下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号,并且在大多数情况下具有有效的性能。但是,当信号不是带通信号时会出现错误,这对于电力系统的波形来说就是这种情况。本文将带通信号模型扩展到考虑了二次谐波的更通用的信号模型,并提出了一种估计频率的新方法。在电力系统中考虑了不同的稳态和动态条件后,说明了该方法的示例。

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