How Instrument Transformers Influence Power Quality Measurements: A Proposal of Accuracy Verification Tests

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00177016%3A_____%2F22%3AN0000059" target="_blank" >RIV/00177016:_____/22:N0000059 - isvavai.cz</a>

Result on the web

<a href="https://www.mdpi.com/1424-8220/22/15/5847" target="_blank" >https://www.mdpi.com/1424-8220/22/15/5847</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/s22155847" target="_blank" >10.3390/s22155847</a>

Result language

angličtina

Original language name

How Instrument Transformers Influence Power Quality Measurements: A Proposal of Accuracy Verification Tests

Original language description

The integration of renewable energy sources on a large scale in the electrical energy distribution systems, as well as the widespread of non-linear loads, has led to a significant increase in power quality (PQ) disturbances. For this reason, PQ monitoring is also becoming a key task in medium voltage (MV) grids. The measurement of PQ at MV levels can only be performed using instrument transformers (ITs) to scale down the level of voltage and current to levels suitable for the input stage of PQ instruments. However, no international standards currently require the verification of the errors introduced by ITs in the measurement of PQ phenomena. Moreover, this issue is only partially addressed in the scientific literature, where papers dealing with specific and limited aspects of the problem can be found. For this reason, this paper aims to comprehensively assess the issue, proposing IT accuracy verification tests for different PQ parameters. First, a set of PQ phenomena relevant for IT testing is chosen, as well as the associated ranges of variation, based on a review of the enforced standards and the scientific literature. For each selected PQ phenomenon, possible performance indices and test waveforms are proposed. Finally, the proposed procedure is validated by applying it to the characterization of two different types of commercial voltage transformers.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20201 - Electrical and electronic engineering

Project

<a href="/en/project/8B20011" target="_blank" >8B20011: Measurement methods and test procedures for assesing accuracy of instruments transformers for power quality measurements</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2022

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Sensors

ISSN

1424-8220

e-ISSN

—

Volume of the periodical

22

Issue of the periodical within the volume

15

Country of publishing house

CH - SWITZERLAND

Number of pages

20

Pages from-to

5847

UT code for WoS article

000839740200001

EID of the result in the Scopus database

2-s2.0-85136777365