NDLI: Current Transformers Effects on the Measurement of Harmonic Active Power in LV and MV Networks

Content Provider	IEEE Xplore Digital Library
Author	Cataliotti, A. Di Cara, D. Emanuel, A.E. Nuccio, S.
Copyright Year	1986
Abstract	The harmonic active power is used to determine the location of polluting loads, the direction of harmonic power flow and to estimate how consequential a certain current harmonic source is. The highest uncertainties, when measuring harmonic active power, are introduced by the current and voltage transducers. This paper presents experimental results which show the impact of current transformers (CTs) on the accuracy of the harmonic power measurements. An expression for the evaluation of the power error in distorted conditions was developed which can be easily utilized in the case of linear current transducers. It is shown how CTs cannot be considered linear transducers and how the higher the absolute value of the CT phase angle error is, the higher becomes the harmonic power error. The harmonic power error reaches maximum value when the phase shift between the voltage and current harmonic nears . Even high accuracy class CTs may not be adequate enough to assist on harmonic power measurement, while linear current transducers will perform satisfactorily.
Sponsorship	IEEE Power Engineering Society
Starting Page	360
Ending Page	368
Page Count	9
File Size	1129950
File Format	PDF
ISSN	08858977
Volume Number	26
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Harmonic analysis Power system harmonics Current transformers Current measurement Power measurement Measurement uncertainty Accuracy power system harmonics Current transformers (CTs) instrument transformers power measurement
Content Type	Text
Resource Type	Article
Subject	Energy Engineering and Power Technology Electrical and Electronic Engineering

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