Power Distribution System Synchrophasor Measurements with Non-Gaussian Noises: Real-World Data Testing and Analysis

被引：13
|
作者：
Huang C. [1 ]
Thimmisetty C. [2 ]
Chen X. [1 ]
Stewart E. [3 ]
Top P. [1 ]
Korkali M. [1 ]
Donde V. [1 ]
Tong C. [1 ]
Min L. [4 ]
机构：
[1] Lawrence Livermore National Laboratory, Livermore, 94550, CA
[2] Palo Alto Networks, Santa Clara, 95054, CA
[3] National Rural Electric Cooperative Association, Arlington, 22203, VA
[4] Precourt Institute for Energy, Stanford University, Stanford, 94305, CA
来源：
IEEE Open Access Journal of Power and Energy | 2021年 / 8卷
关键词：
Gaussian mixture model (GMM); measurement error; micro-PMU (μPMU); phasor measurement unit (PMU); Power distribution system; state estimation; synchrophasor;
D O I：
10.1109/OAJPE.2021.3081503
中图分类号：
学科分类号：
摘要：
This short paper investigates distribution-level synchrophasor measurement errors with online and offline tests, and mathematically and systematically identifies the actual distribution of the measurement errors through graphical and numerical analysis. It is observed that the measurement errors in both online and offline case studies follow a non-Gaussian distribution, instead of the traditionally assumed Gaussian distribution. It suggests the use of non-Gaussian models, such as Gaussian mixture models, for representing the measurement errors more accurately and realistically. The presented tests and analysis are helpful for the understanding of distribution-level measurement characteristics, and for the modeling and simulation of distribution system applications, such as state estimation. © 2020 IEEE.
引用
收藏
页码：223 / 228
页数：5
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