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Changes in AC Power Standard in Japan
Author(s) -
Shirai Terumitsu
Publication year - 2008
Publication title -
ieej transactions on electrical and electronic engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.254
H-Index - 30
eISSN - 1931-4981
pISSN - 1931-4973
DOI - 10.1002/tee.20284
Subject(s) - electric power , electrical engineering , metrology , electricity meter , comparator , power (physics) , electric energy , engineering , converters , voltage , physics , optics , quantum mechanics
The precise measurement of electric power will increase in importance because of the growth of power consumption and the deregulation of electric utilities. An electric power and energy calibration system was developed at the Japan Electric Meters Inspection Corporation (JEMIC) in 2004, and it was designated as the national electric power and energy standards in Japan in 2005 to replace the aging AC/DC watt comparator. The methods of establishing the electric power standard at foreign National Metrology Institutes (NMIs) can be classified roughly into a method by a sampling wattmeter, a method by the principle of the current comparator, and a method based on dual‐heater multijunction thermal converters. This article describes the transition of the electric power and energy standards in Japan and in foreign countries. Copyright © 2008 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.