Harmonic state estimation based on graph signal processing

This paper presents a novel harmonic state estimation (HSE) methodology based on graph signal processing. The proposed approach can perform HSE without calculating harmonic impedance. The proposed methodology involves graph signal theory for constructing a graph Laplacian matrix and an unconstrained...

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Bibliographic Details
Published in:IET generation, transmission & distribution Vol. 16; no. 6; pp. 1083 - 1095
Main Authors: Wang, Ying, Xu, Rui, Ma, Xiaoyang, Qiu, Wei, Fu, Qiang, Zhou, Runze
Format: Journal Article
Language:English
Published: Wiley 01.03.2022
ISSN:1751-8687, 1751-8695
Online Access:Get full text
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Summary:This paper presents a novel harmonic state estimation (HSE) methodology based on graph signal processing. The proposed approach can perform HSE without calculating harmonic impedance. The proposed methodology involves graph signal theory for constructing a graph Laplacian matrix and an unconstrained optimization function, the adaptive K‐means algorithm for building a prior information model of the target bus, as well as data fuzzification and the domain averaging method for state estimation. Simulations are carried out using a 30‐bus power distribution system, and results are presented and discussed to prove the efficiency of the proposed method. The practical application further verifies the availability of the proposed method.
ISSN:1751-8687
1751-8695
DOI:10.1049/gtd2.12352