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

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JA - Elektronika a optoelektronika, elektrotechnika

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2009

Kód důvěrnosti údajů

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

Název periodika

Sensor Letters

ISSN

1546-198X

e-ISSN

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Svazek periodika

7

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

3

Strana od-do

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Kód UT WoS článku

000271193300044

EID výsledku v databázi Scopus

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