Initial Results for Cramér-Rao Lower Bound for Forced Oscillations in Power Systems

Zikai Xu, J. Pierre
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引用次数: 6

Abstract

Forced oscillations threaten the reliability of wide-area power systems, and different approaches to estimate forced oscillation have been explored over the past several years. Though these efforts provide powerful tools to estimate a forced oscillation's amplitude, frequency, and phase, a benchmark for estimation accuracy has not been available. This paper provides initial results in such a benchmark called the Cramér-Rao Lower Bound which is a lower bound on the variance in those estimates. A direct approach to derive Cramer-Ran Lower Bound of forced oscillation in power systems is given. In the end, the MinniWECC model is applied to assess the impact of different factors on the bound.
电力系统强迫振动的cram - rao下界的初步结果
强迫振荡威胁着广域电力系统的可靠性,在过去的几年里,人们探索了不同的方法来估计强迫振荡。尽管这些努力为估计受迫振荡的幅度、频率和相位提供了强有力的工具,但估计精度的基准还没有得到。本文提供了这样一个基准的初步结果,这个基准被称为cram - rao下限,它是这些估计中方差的下限。给出了一种推导电力系统强迫振荡的Cramer-Ran下界的直接方法。最后,应用MinniWECC模型评估不同因素对边界的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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