A new method for separating utility and customer harmonic contribution at the point of common coupling

Noraliza Hamzah, Azah Mohamed, Aini Hussain

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Harmonic disturbances can have significant technical and economic impacts for many different types of facilities equipment and customers' loads. This paper proposes a new method to measure harmonic contributions by utility and customer at the point of common coupling in an industrial distribution system. The new method is based on the sign of the reactive power gradient measured at the point of common coupling (PCC). Simulations were carried out by considering a saturated transformer as harmonic producer at the utility side and an adjustable speed drive as harmonic producer at the customer side. In the proposed method, the reactive power at the point of common coupling which is between utility and customer sides are measured and plotted against time. A least square method is used to perform the line fitting for the reactive power against time of the harmonic distortion to detect harmonic source. A positive gradient indicates that utility is the main contributor of harmonic distortion at PCC and on the other hand, a negative gradient indicates that customer is the main contributor of harmonic distortion at PCC. Results from simulations have verified that the new method is technically sound as it only requires voltage and current measurements at the PCC.

Original languageEnglish
Pages (from-to)3141-3149
Number of pages9
JournalInternational Energy Journal
Volume6
Issue number1 PART 3
Publication statusPublished - Jun 2005

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Harmonic distortion
Reactive power
Voltage measurement
Electric current measurement
Acoustic waves
Economics

ASJC Scopus subject areas

  • Energy(all)

Cite this

A new method for separating utility and customer harmonic contribution at the point of common coupling. / Hamzah, Noraliza; Mohamed, Azah; Hussain, Aini.

In: International Energy Journal, Vol. 6, No. 1 PART 3, 06.2005, p. 3141-3149.

Research output: Contribution to journalArticle

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