A Digital Three-Phase Watthour Meter

Heikki Seppä; Pekka Talja; Olavi Blomberg; Markku Kallunki; Seppo Vehviläinen

doi:10.1109/CPEM.1990.110040

A Digital Three-Phase Watthour Meter

Heikki Seppä, Pekka Talja, Olavi Blomberg, Markku Kallunki, Seppo Vehviläinen

Centre for Metrology and Accreditation Finland (MIKES)

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

Abstract

A microprocessor-controlled three-phase digital watthour meter is described. The wattmeter is based on a sampling method and on an analog-to-digital (A/D) conversion; only one 10-b A/D converter, integrated in a microprocessor, is used. The resolution of the converter is improved by superimposing noise on current and voltage signals, and its uncertainty is reduced via an external resistive voltage divider. A wide current range is achieved by passing voltage signals. proportional to input currents, through a programmable-gain amplifier. The overall uncertainty of the meter is less than 0.1%. A block diagram of the wattmeter is presented.

Original language	English
Title of host publication	CPEM'90 Digest
Subtitle of host publication	Conference on Precision Electromagnetic Measurements
Editors	Gary R. Hanes
Place of Publication	New York
Publisher	IEEE Institute of Electrical and Electronic Engineers
Pages	318-319
DOIs	https://doi.org/10.1109/CPEM.1990.110040
Publication status	Published - 1990
MoE publication type	A4 Article in a conference publication
Event	CPEM'90: Conference on Precision Electromagnetic Measurements - Ottawa, Canada Duration: 11 Jul 1990 → 14 Jul 1990

Conference

Conference	CPEM'90
Country/Territory	Canada
City	Ottawa
Period	11/07/90 → 14/07/90

Access to Document

10.1109/CPEM.1990.110040

Cite this

@inproceedings{9d777ff4a8184435b798e4e9017dc8c7,

title = "A Digital Three-Phase Watthour Meter",

abstract = "A microprocessor-controlled three-phase digital watthour meter is described. The wattmeter is based on a sampling method and on an analog-to-digital (A/D) conversion; only one 10-b A/D converter, integrated in a microprocessor, is used. The resolution of the converter is improved by superimposing noise on current and voltage signals, and its uncertainty is reduced via an external resistive voltage divider. A wide current range is achieved by passing voltage signals. proportional to input currents, through a programmable-gain amplifier. The overall uncertainty of the meter is less than 0.1%. A block diagram of the wattmeter is presented.",

author = "Heikki Sepp{\"a} and Pekka Talja and Olavi Blomberg and Markku Kallunki and Seppo Vehvil{\"a}inen",

note = "Project code: S{\"A}H9032; CPEM'90 : Conference on Precision Electromagnetic Measurements ; Conference date: 11-07-1990 Through 14-07-1990",

year = "1990",

doi = "10.1109/CPEM.1990.110040",

language = "English",

pages = "318--319",

editor = "Hanes, {Gary R.}",

booktitle = "CPEM'90 Digest",

publisher = "IEEE Institute of Electrical and Electronic Engineers",

address = "United States",

}

A Digital Three-Phase Watthour Meter. / Seppä, Heikki; Talja, Pekka; Blomberg, Olavi et al.
CPEM'90 Digest: Conference on Precision Electromagnetic Measurements. ed. / Gary R. Hanes. New York: IEEE Institute of Electrical and Electronic Engineers, 1990. p. 318-319.

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

TY - GEN

T1 - A Digital Three-Phase Watthour Meter

AU - Seppä, Heikki

AU - Talja, Pekka

AU - Blomberg, Olavi

AU - Kallunki, Markku

AU - Vehviläinen, Seppo

N1 - Project code: SÄH9032

PY - 1990

Y1 - 1990

N2 - A microprocessor-controlled three-phase digital watthour meter is described. The wattmeter is based on a sampling method and on an analog-to-digital (A/D) conversion; only one 10-b A/D converter, integrated in a microprocessor, is used. The resolution of the converter is improved by superimposing noise on current and voltage signals, and its uncertainty is reduced via an external resistive voltage divider. A wide current range is achieved by passing voltage signals. proportional to input currents, through a programmable-gain amplifier. The overall uncertainty of the meter is less than 0.1%. A block diagram of the wattmeter is presented.

AB - A microprocessor-controlled three-phase digital watthour meter is described. The wattmeter is based on a sampling method and on an analog-to-digital (A/D) conversion; only one 10-b A/D converter, integrated in a microprocessor, is used. The resolution of the converter is improved by superimposing noise on current and voltage signals, and its uncertainty is reduced via an external resistive voltage divider. A wide current range is achieved by passing voltage signals. proportional to input currents, through a programmable-gain amplifier. The overall uncertainty of the meter is less than 0.1%. A block diagram of the wattmeter is presented.

U2 - 10.1109/CPEM.1990.110040

DO - 10.1109/CPEM.1990.110040

M3 - Conference article in proceedings

SP - 318

EP - 319

BT - CPEM'90 Digest

A2 - Hanes, Gary R.

PB - IEEE Institute of Electrical and Electronic Engineers

CY - New York

T2 - CPEM'90

Y2 - 11 July 1990 through 14 July 1990

ER -

A Digital Three-Phase Watthour Meter

Abstract

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