Adjustable Window for Amplitude Estimation Considering the Time-Varying Frequency of Power Systems Signals

被引：0

作者：

Mendonca, Thiago R. F. ^{[1
]}

Pinto, Milena F. ^{[1
]}

Duque, Carlos A. ^{[1
]}

机构：

[1] Fed Univ Juiz de Fora UFJF, Juiz De Fora, MG, Brazil

来源：

2015 IEEE 24TH INTERNATIONAL SYMPOSIUM ON INDUSTRIAL ELECTRONICS (ISIE) | 2015年

关键词：

Adjustable Filter; Frequency Oscillation; Modified Moving Average Filter; Parameter Estimation; Variable Window Length; INTERHARMONICS;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The development of signal processing techniques that allows the estimation of parameters from the power system are crucial to keep the grid within a safe margin of operation. Some methods require a specific sampling rate in order to avoid asynchronous sampling, which may result in errors in estimation algorithms. Due to unbalances between demand and supply, the power signal is time-varying in nature, hindering the selection of an optimal fixed window length. In this work is proposed a technique in which the window length adapts to the actual value of estimated frequency, achieving better performance. The filter utilized to test the method was a moving average filter, but it can be expanded for other algorithms. Results have shown good performance when changing the filter coefficients according to frequency estimation.

引用

页码：1327 / 1332

页数：6

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