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

Thumbnail Image
Files
CIRED 2019 - 103.pdf (429.39 KB)
Paper number
103
Working Group Number
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.
Table of content
Keywords
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