Research on power system harmonic state estimation

Author

Zhang, Yiquan ; Xu, Yonghai ; Xu, Yuanyuan

Author_Institution

Sch. of Electr. & Electron. Eng., North China Electr. Power Univ., Beijing, China

fYear

2011

fDate

6-9 July 2011

Firstpage

596

Lastpage

600

Abstract

The concepts, functions and implementation methods of power system harmonic state estimation (PSHSE) are discussed in this paper. The harmonic state estimation methods which are being used at present are reviewed. Selecting node voltage phasors as state variables, node voltage phasors, branch current phasors and injected current phasors as measurements variables, the paper establishes the measurement equations of different configuration and the mathematical model of PSHSE. According to the different measurement schemes, this paper proposes the different method. At the end, the paper analysis the method about extending the observability analysis algorithm of traditional power flow state estimation techniques to harmonic state estimation field.

Keywords

observability; power system harmonics; power system measurement; power system state estimation; branch current phasors; injected current phasors; mathematical model; measurement equations; measurement variables; node voltage phasors; observability analysis algorithm; power flow state estimation techniques; power system harmonic state estimation; state variables; Equations; Harmonic analysis; Mathematical model; Pollution measurement; Power system harmonics; State estimation; Transmission line measurements; cholesky decomposition algorithm; harmonic state estimation; observability; singular value decomposition (SVD);

fLanguage

English

Publisher

ieee

Conference_Titel

Electric Utility Deregulation and Restructuring and Power Technologies (DRPT), 2011 4th International Conference on

Conference_Location

Weihai, Shandong

Print_ISBN

978-1-4577-0364-5

Type

conf

DOI

10.1109/DRPT.2011.5993962

Filename

5993962