Low-power Instrument Transformers Frequency Response and Accuracy Requirements for Harmonics

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CIRED 2019 - 103.pdf (429.39 KB)

Paper number

103

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Conference name

CIRED 2019

Conference date

3-6 June 2019

Conference location

Madrid, Spain

Peer-reviewed

Yes

Short title

Convener

Authors

Hrabcik, Miroslav, ABB s.r.o., Czech Republic
Javora, Radek, ABB s.r.o., Czech Republic
Prokop, Vaclav, ABB s.r.o., Czech Republic

Abstract

The last decade has noticed the rapidly growing use of medium-voltage (MV) low-power instrument transformers (LPITs) which are based on low-power principles such as Rogowski coil and resistive or capacitive voltage dividers. These advanced technologies are being utilized also in applications such as energy and power quality metering where frequency response with accurate measurement of low and high harmonics is a key factor for proper opera­tion. This paper deals with accuracy requirements for harmo­nics and low frequencies as stated in IEC standards for LPITs introduced by the new IEC 61869 stan­dards family. This paper describes practical LPIT aspects which influence frequency response, sum­ma­rizes available testing methods and presents results of tests perfor­med on a wide range of LPITs. It focuses only on LPITs which do not involve digital data processing/transmission.

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Publisher

AIM

Date

2019-06-03

Published in

CIRED 2019 Conference

Permanent link to this record

https://cired-repository.org/handle/20.500.12455/349
http://dx.doi.org/10.34890/579

ISSN

2032-9644

ISBN

978-2-9602415-0-1