Drawback of Using Double Core Current Transformers in Static Watt-Hour Meters

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F09%3A00160009" target="_blank" >RIV/68407700:21230/09:00160009 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Drawback of Using Double Core Current Transformers in Static Watt-Hour Meters

Original language description

This article deals with dual core current transformers that are used in some modern static watt-hour meters where they should substitute the more expensive DC tolerant current transformer with linear hysteresis loop. It describes the problem of power consumption measurement on inductive or capacitive loads where some DC magnetic field is applied. In this case the core with high permeability is saturated and operating point is moved on hysteresis loop of low permeability core. Then additional errors occur and the sign of the error can be both positive and negative depending on load type. Dimension of errors can be in order from units up to tens of per cents and it relies on power factor and DC magnetic field. Explanation of this problem is described inthe article as well as some results of measurements and comparison with theoretical computation.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

JA - Electronics and optoelectronics

OECD FORD branch

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Project

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Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2009

Confidentiality

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

Name of the periodical

Sensor Letters

ISSN

1546-198X

e-ISSN

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Volume of the periodical

7

Issue of the periodical within the volume

3

Country of publishing house

US - UNITED STATES

Number of pages

3

Pages from-to

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UT code for WoS article

000271193300044

EID of the result in the Scopus database

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