SE0300391D0 - Method and equipment for measuring power in an AC system - Google Patents

Method and equipment for measuring power in an AC system

Info

Publication number
SE0300391D0
SE0300391D0 SE0300391A SE0300391A SE0300391D0 SE 0300391 D0 SE0300391 D0 SE 0300391D0 SE 0300391 A SE0300391 A SE 0300391A SE 0300391 A SE0300391 A SE 0300391A SE 0300391 D0 SE0300391 D0 SE 0300391D0
Authority
SE
Sweden
Prior art keywords
measurement signal
current
voltage
measuring circuit
equipment
Prior art date
Application number
SE0300391A
Other languages
Swedish (sv)
Other versions
SE521894C2 (en
SE0300391L (en
Inventor
Ovali Hirsimaeki
Original Assignee
Enermet Oy
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Enermet Oy filed Critical Enermet Oy
Publication of SE0300391D0 publication Critical patent/SE0300391D0/en
Publication of SE0300391L publication Critical patent/SE0300391L/en
Publication of SE521894C2 publication Critical patent/SE521894C2/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R21/00—Arrangements for measuring electric power or power factor
    • G01R21/06—Arrangements for measuring electric power or power factor by measuring current and voltage

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Current Or Voltage (AREA)

Abstract

Current of the measurement object is conducted through a first transformer based on the induction phenomenon into a measuring circuit, whereby such a current measurement signal is available in the measuring circuit, which is proportional to the time derivative of the consumption object current. Voltage of the measurement object is conducted directly or through a second transformer into the measuring circuit, whereby such a voltage measurement signal is available in the measuring circuit, which is proportional to the consumption object voltage. The integration is applied to the voltage measurement signal instead of the current measurement signal, and the transient power of the consumption object is calculated by multiplying at each moment of calculation the value of the current measurement signal by the value of the integrated voltage measurement signal.
SE0300391A 2000-08-18 2003-02-14 Method and equipment for measuring power in an AC system SE521894C2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20001831A FI110964B (en) 2000-08-18 2000-08-18 Method and apparatus for measuring power in an AC system
PCT/FI2001/000722 WO2002014881A1 (en) 2000-08-18 2001-08-15 Method and equipment for power measurement in an alternating-current system

Publications (3)

Publication Number Publication Date
SE0300391D0 true SE0300391D0 (en) 2003-02-14
SE0300391L SE0300391L (en) 2003-02-14
SE521894C2 SE521894C2 (en) 2003-12-16

Family

ID=8558918

Family Applications (1)

Application Number Title Priority Date Filing Date
SE0300391A SE521894C2 (en) 2000-08-18 2003-02-14 Method and equipment for measuring power in an AC system

Country Status (5)

Country Link
AU (1) AU2001282197A1 (en)
DE (1) DE10196481B4 (en)
FI (1) FI110964B (en)
SE (1) SE521894C2 (en)
WO (1) WO2002014881A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103323712A (en) * 2013-06-09 2013-09-25 福州瑞芯微电子有限公司 Testing method of power consumption of electric device

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4282576A (en) * 1979-05-22 1981-08-04 Westinghouse Electric Corp. Indicator diagram based AC electric energy meter
US4250552A (en) * 1979-09-10 1981-02-10 Westinghouse Electric Corp. AC Electric energy meter utilizing a counter as an integrator
US4459546A (en) * 1980-11-03 1984-07-10 Rockwell International Corporation Electronic kilowatthour meter
DE4400418A1 (en) * 1993-01-14 1994-08-04 Schlumberger Ind Inc Air coupled current transformer
DE69330597T2 (en) * 1993-01-20 2002-06-27 Schlumberger Ind Sa Multi-stage frequency modulated circuit
FI98865C (en) * 1994-11-07 1997-08-25 Enermet Oy Method for measuring alternating current, measuring sensor for measuring alternating current and its use in a kWh meter
FI108165B (en) * 2000-05-05 2001-11-30 Enermet Oy Current converter for measuring AC current

Also Published As

Publication number Publication date
FI20001831A (en) 2002-02-19
FI110964B (en) 2003-04-30
FI20001831A0 (en) 2000-08-18
DE10196481B4 (en) 2006-01-05
SE521894C2 (en) 2003-12-16
SE0300391L (en) 2003-02-14
AU2001282197A1 (en) 2002-02-25
DE10196481T1 (en) 2003-07-03
WO2002014881A1 (en) 2002-02-21
WO2002014881A9 (en) 2002-12-12

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Legal Events

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