Sensitivity Analysis of Weighted-Least-Squares Dynamic Phasor Estimator to WideBand Noise

被引：0

作者：

Petri, Dario ^{[1
]}

Belega, Daniel ^{[2
]}

机构：

[1] Univ Trent, Dept Ind Engn, Trento, Italy

[2] Politehn Univ Timisoara, Dept Measurements & Opt Elect, Timisoara, Romania

来源：

2014 AEIT ANNUAL CONFERENCE - FROM RESEARCH TO INDUSTRY: THE NEED FOR A MORE EFFECTIVE TECHNOLOGY TRANSFER (AEIT) | 2014年

关键词：

Taylor weighted least squares (TWLS) algorithm; statistical analysis; steady-state and dynamic conditions; synchrophasor measurements; wideband noise;

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：

This paper investigates the influence of wideband noise on the accuracy of phasor, frequency, and Rate of Change Of Frequency (ROCOF) estimators returned by the Taylor Weighted Least Squares (TWLS) algorithm. Both static and dynamic operating conditions are considered, according to specifications of the IEEE Standard C37.118.1-2011 for synchrophasor measurements in power systems and its Amendment IEEE Standard C37.118.1a-2014. In particular, the effect on estimation accuracy of both the observation interval length and the number of acquired samples/nominal cycle is analyzed by considering as worst case the mean plus twice the standard deviation of the estimation errors. The achieved values are compared with the results achieved when processing noiseless waveforms and the thresholds specified in the above Standards documents. The performed comparison shows that the impact of wideband noise on the estimated phasor parameters can be relevant even though the signal-to-noise ratio is quite high.

引用

页数：6

共 13 条

[1] Dynamic Phasor and Frequency Estimates Through Maximally Flat Differentiators [J].