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Comprehensive and innovative method for dynamic phasor and frequency estimation

机译：动态相量和频率估计的综合创新方法

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During the incidence of major disturbances in a large interconnected power network, frequency deviates from its nominal value. This deviation affects the estimated parameters of the phasor. This is especially very important during fault in transmission lines and generator terminals, because under fault conditions, the exponentially decaying dc component appears in current and voltage signals. An innovative hybrid method for dynamic phasor and frequency estimation is represented in this paper. Fundamental mathematics of the proposed algorithm is based on utilizing Taylor series and Nonlinear Least Squares. To increase the effectiveness of the phasor and frequency estimation, the least square method is improved. Algorithm performance has been investigated by using signals which are generated in MATLAB and PSCAD/EMTDC software. Evaluation results demonstrate that algorithm is faster and more accurate than present methods in pursuing the signal variations. This characteristic is significant, especially in fault event. In addition, simple calculations and low-latency in estimation are the other advantages of this method. This feature makes the proposed method a good performance in Real-time simulation of power systems.
机译：在大型互联电网中发生重大干扰时，频率会偏离其标称值。该偏差影响相量的估计参数。这在传输线和发电机端子出现故障时尤其重要，因为在故障条件下，电流和电压信号中会出现指数衰减的直流分量。本文提出了一种创新的动态相量和频率估计混合方法。该算法的基础数学是基于利用泰勒级数和非线性最小二乘法的。为了提高相量和频率估计的有效性，改进了最小二乘法。通过使用在MATLAB和PSCAD / EMTDC软件中生成的信号来研究算法性能。评估结果表明，该算法在追求信号变化方面比现有方法更快，更准确。该特性非常重要，尤其是在故障事件中。此外，该方法的另一个优点是计算简单，估计延迟低。该特征使所提出的方法在电力系统的实时仿真中具有良好的性能。

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