SE9200011L - PROCEDURES FOR RECONSTRUCTION OF Saturated Current Transformer Signals AND DEVICE FOR IMPLEMENTATION OF THE PROCEDURE - Google Patents

PROCEDURES FOR RECONSTRUCTION OF Saturated Current Transformer Signals AND DEVICE FOR IMPLEMENTATION OF THE PROCEDURE

Info

Publication number
SE9200011L
SE9200011L SE9200011A SE9200011A SE9200011L SE 9200011 L SE9200011 L SE 9200011L SE 9200011 A SE9200011 A SE 9200011A SE 9200011 A SE9200011 A SE 9200011A SE 9200011 L SE9200011 L SE 9200011L
Authority
SE
Sweden
Prior art keywords
current
current transformer
reconstruction
procedures
implementation
Prior art date
Application number
SE9200011A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE9200011D0 (en
SE469676B (en
Inventor
M Bjoerklund
M M Saha
B Carlsson
Original Assignee
Asea Brown Boveri
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 Asea Brown Boveri filed Critical Asea Brown Boveri
Priority to SE9200011A priority Critical patent/SE469676B/en
Publication of SE9200011D0 publication Critical patent/SE9200011D0/en
Priority to PCT/SE1992/000863 priority patent/WO1993013581A1/en
Priority to CA 2126867 priority patent/CA2126867A1/en
Priority to EP93901453A priority patent/EP0619922A1/en
Publication of SE9200011L publication Critical patent/SE9200011L/en
Publication of SE469676B publication Critical patent/SE469676B/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/42—Circuits specially adapted for the purpose of modifying, or compensating for, electric characteristics of transformers, reactors, or choke coils
    • H01F27/422—Circuits specially adapted for the purpose of modifying, or compensating for, electric characteristics of transformers, reactors, or choke coils for instrument transformers
    • H01F27/427—Circuits specially adapted for the purpose of modifying, or compensating for, electric characteristics of transformers, reactors, or choke coils for instrument transformers for current transformers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00—Details of emergency protective circuit arrangements
    • H02H1/0007—Details of emergency protective circuit arrangements concerning the detecting means
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00—Details of emergency protective circuit arrangements
    • H02H1/04—Arrangements for preventing response to transient abnormal conditions, e.g. to lightning or to short duration over voltage or oscillations; Damping the influence of dc component by short circuits in ac networks
    • H02H1/046—Arrangements for preventing response to transient abnormal conditions, e.g. to lightning or to short duration over voltage or oscillations; Damping the influence of dc component by short circuits in ac networks upon detecting saturation of current transformers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
  • Transformers For Measuring Instruments (AREA)

Abstract

The invention relates to a numerical method which via discrete-time measurements of the secondary current (is(k)) from a current transformer reconstructs the primary current (ipr(k)) and the secondary current (isr(k)) of a saturated current transformer, which takes place in a block B1 and a method for detecting saturation as well as for detecting when saturation ceases, which takes place in blocks B2, B3, B4, B5, B6 and B7. The output signals of the method are obtained via a block B8 and upon a decision about saturated current transformer, the output signals consist of the reconstructed primary current (ipn(k)) and the reconstructed secondary current (isn(K)) and upon a decision about unsaturated current transformer, the output signals consist of the reconstructed primary current (ipn(k)) and the measured secondary current (is(k)). The invention also relates to a device for carrying out said methods.
SE9200011A 1992-01-03 1992-01-03 PROCEDURES FOR RECONSTRUCTION OF Saturated Current Transformer Signals AND DEVICE FOR IMPLEMENTATION OF THE PROCEDURE SE469676B (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
SE9200011A SE469676B (en) 1992-01-03 1992-01-03 PROCEDURES FOR RECONSTRUCTION OF Saturated Current Transformer Signals AND DEVICE FOR IMPLEMENTATION OF THE PROCEDURE
PCT/SE1992/000863 WO1993013581A1 (en) 1992-01-03 1992-12-14 Reconstruction of saturated current transformer signals
CA 2126867 CA2126867A1 (en) 1992-01-03 1992-12-14 Reconstruction of saturated current transformer signals
EP93901453A EP0619922A1 (en) 1992-01-03 1992-12-14 Reconstruction of saturated current transformer signals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9200011A SE469676B (en) 1992-01-03 1992-01-03 PROCEDURES FOR RECONSTRUCTION OF Saturated Current Transformer Signals AND DEVICE FOR IMPLEMENTATION OF THE PROCEDURE

Publications (3)

Publication Number Publication Date
SE9200011D0 SE9200011D0 (en) 1992-01-03
SE9200011L true SE9200011L (en) 1993-07-04
SE469676B SE469676B (en) 1993-08-16

Family

ID=20384952

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9200011A SE469676B (en) 1992-01-03 1992-01-03 PROCEDURES FOR RECONSTRUCTION OF Saturated Current Transformer Signals AND DEVICE FOR IMPLEMENTATION OF THE PROCEDURE

Country Status (4)

Country Link
EP (1) EP0619922A1 (en)
CA (1) CA2126867A1 (en)
SE (1) SE469676B (en)
WO (1) WO1993013581A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5652507A (en) * 1996-01-31 1997-07-29 Eaton Corporation Apparatus and method for measuring an AC current which saturates the core of a current transformer
DE19723422C1 (en) * 1997-06-04 1998-12-10 Siemens Ag Method and device for detecting and correcting a saturated current profile of a current transformer
DE19928192B4 (en) * 1999-06-19 2005-08-25 Abb Patent Gmbh Process for the reconstruction of a stream
US6754616B1 (en) * 2000-01-31 2004-06-22 Fujitsu Limited Method of emulating an ideal transformer valid from DC to infinite frequency
FR2818433B1 (en) 2000-12-20 2003-02-07 Schneider Electric Ind Sa DEVICE FOR DETERMINING THE PRIMARY CURRENT OF A CURRENT TRANSFORMER HAVING SATURATION CORRECTION MEANS
EP2271948B1 (en) 2008-03-28 2018-06-13 ABB Schweiz AG Phasor estimation during current transformer saturation
DE102013210800A1 (en) 2013-06-10 2014-12-11 Bender Gmbh & Co. Kg Integrated circuit with digital method for AC-sensitive differential current measurement
US10263507B2 (en) 2015-06-29 2019-04-16 Abb Schweiz Ag Method for correcting effect of saturation in current transformer and an intelligent electronic device therefor
EP3560054B1 (en) * 2016-12-26 2021-09-01 ABB Schweiz AG A method for detecting inrush and ct saturation and an intelligent electronic device therefor
CN117607520B (en) * 2023-11-24 2024-10-11 浙江科能达电气有限公司 Current sampling method, device and medium of current transformer in nonlinear region

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0090095B1 (en) * 1982-03-29 1986-11-05 BBC Brown Boveri AG Method and device for evaluating the secondary current of a current transformer primary connected to an electric power supply line

Also Published As

Publication number Publication date
EP0619922A1 (en) 1994-10-19
SE9200011D0 (en) 1992-01-03
SE469676B (en) 1993-08-16
WO1993013581A1 (en) 1993-07-08
CA2126867A1 (en) 1993-07-08

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