DocumentCode :
2119809
Title :
Sub-harmonic state estimation in power systems
Author :
Van Long Pham ; Wong, Kit Po ; Watson, Neville ; Arrillaga, Jos
Author_Institution :
Dept. of Electr. & Electron. Eng., Western Australia Univ., Nedlands, WA, Australia
Volume :
2
fYear :
2000
fDate :
2000
Firstpage :
1168
Abstract :
This paper presents an approach for system-wide sub-harmonic estimation using state estimation (SE) algorithm together with the wavelet-transform (WT)-based algorithm. The WT-based algorithm is used to identify sub-harmonics in the measured power system waveforms. SE is then performed to estimate the sub-harmonic levels for the whole system based on a few selected measurements. Symbolic observability analysis (OA) method is applied to determine the system solvability for the SE algorithm from a set of measurements. Location and type of sub-harmonic sources are then determined from the estimated results. The approach is illustrated using a real power system and real field-test waveforms. The results show the accuracy of the method and its potential for analysis of noninteger harmonics
Keywords :
harmonic analysis; harmonic distortion; observability; power system harmonics; power system state estimation; wavelet transforms; algorithm; noninteger harmonics analysis; power systems sub-harmonic state estimation; subharmonics identification; symbolic observability analysis; system solvability; wavelet transform; Algorithm design and analysis; Harmonic analysis; Observability; Performance evaluation; Power measurement; Power system analysis computing; Power system harmonics; Power system measurements; Power systems; State estimation;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Power Engineering Society Winter Meeting, 2000. IEEE
Print_ISBN :
0-7803-5935-6
Type :
conf
DOI :
10.1109/PESW.2000.850111
Filename :
850111
Link To Document :
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