Harmonic impedance assessment using prevailing phasors

In accordance with the IEC 61000-3-6, the evaluation of the harmonic emissions requires an accurate harmonic impedance representation of the system. However, the assessment of a harmonic impedance is understood to be a very complex problem and that the available methods are not entirely satisfactory...

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Bibliographic Details
Published in2018 18th International Conference on Harmonics and Quality of Power (ICHQP) pp. 1 - 5
Main Authors Serfontein, Duan, Rens, Johan, Botha, Gerhard
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.05.2018
Subjects
Generators
Harmonic analysis
IEC Standards
Impedance
Impedance measurement
network harmonic impedances
noninvasive
online measurements
Power quality
Power system harmonics
prevailing phasors
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Summary:In accordance with the IEC 61000-3-6, the evaluation of the harmonic emissions requires an accurate harmonic impedance representation of the system. However, the assessment of a harmonic impedance is understood to be a very complex problem and that the available methods are not entirely satisfactory. Yet, utilities and other network users are expected to prove compliance to apportioned emission limits. To enable the online assessment of harmonic emissions, this paper proposes the use of prevailing phasors to enable the monitoring of the network's harmonic impedance. The proposed method has been validated using network simulations and practical measurements at a windfarm were used for offline assessments.
ISSN:2164-0610
DOI:10.1109/ICHQP.2018.8378872