IT1108314B - Protezione differenziale per componenti di impianti elettrici - Google Patents

Protezione differenziale per componenti di impianti elettrici

Info

Publication number
IT1108314B
IT1108314B IT69578/78A IT6957878A IT1108314B IT 1108314 B IT1108314 B IT 1108314B IT 69578/78 A IT69578/78 A IT 69578/78A IT 6957878 A IT6957878 A IT 6957878A IT 1108314 B IT1108314 B IT 1108314B
Authority
IT
Italy
Prior art keywords
system components
electrical system
differential protection
differential
protection
Prior art date
Application number
IT69578/78A
Other languages
English (en)
Other versions
IT7869578A0 (it
Original Assignee
Asea Ab
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 Ab filed Critical Asea Ab
Publication of IT7869578A0 publication Critical patent/IT7869578A0/it
Application granted granted Critical
Publication of IT1108314B publication Critical patent/IT1108314B/it

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
    • H02H3/28—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at two spaced portions of a single system, e.g. at opposite ends of one line, at input and output of apparatus
    • H02H3/283—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at two spaced portions of a single system, e.g. at opposite ends of one line, at input and output of apparatus and taking into account saturation of current transformers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Breakers (AREA)
IT69578/78A 1977-11-11 1978-11-10 Protezione differenziale per componenti di impianti elettrici IT1108314B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7712755A SE408983B (sv) 1977-11-11 1977-11-11 Differentialskydd

Publications (2)

Publication Number Publication Date
IT7869578A0 IT7869578A0 (it) 1978-11-10
IT1108314B true IT1108314B (it) 1985-12-09

Family

ID=20332834

Family Applications (1)

Application Number Title Priority Date Filing Date
IT69578/78A IT1108314B (it) 1977-11-11 1978-11-10 Protezione differenziale per componenti di impianti elettrici

Country Status (8)

Country Link
US (1) US4237512A (it)
CA (1) CA1130437A (it)
CH (1) CH639223A5 (it)
DE (1) DE2846570A1 (it)
FR (1) FR2408933A1 (it)
GB (1) GB2010031B (it)
IT (1) IT1108314B (it)
SE (1) SE408983B (it)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS596715A (ja) * 1982-07-01 1984-01-13 三菱電機株式会社 差動保護継電装置
US4623949A (en) 1985-09-06 1986-11-18 Westinghouse Electric Corp. Bus differential relay
US4939617A (en) * 1989-05-05 1990-07-03 Dowty Rfl Industries Inc. Method and apparatus for monitoring an AC transmission line
US5157575A (en) * 1991-05-13 1992-10-20 Schweitzer Engineering Laboratories, Inc. Circuit breaker failure relay system for power transmission line systems
US6442010B1 (en) * 2000-04-03 2002-08-27 General Electric Company Differential protective relay for electrical buses with improved immunity to saturation of current transformers
DE10106279A1 (de) * 2001-02-05 2002-08-29 Siemens Ag Verfahren zum Erzeugen eines Auslösesignals nach demStromdifferentialschutzprinzip und Stromdifferentialschutzanordnung
US6611411B2 (en) * 2001-04-06 2003-08-26 General Electric Company Trip signal verifying method and apparatus
EP1348970B1 (de) * 2002-03-26 2007-06-20 ABB Schweiz AG Plausibilitätsprüfung von Stromwandlern in Unterstationen
US9864008B2 (en) 2014-03-31 2018-01-09 Schweitzer Engineering Laboratories, Inc. Electric power system circuit breaker trip diagnostic
US12181524B2 (en) 2022-07-12 2024-12-31 Schweitzer Engineering Laboratories, Inc. Trip circuit current display

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2608606A (en) * 1950-06-29 1952-08-26 Westinghouse Electric Corp Bus differential protection
US3337772A (en) * 1963-12-28 1967-08-22 Asea Ab Transformer differential protection
FR1541160A (fr) * 1967-08-31 équerre polyvalente pour travaux graphiques et autres
SE338093B (it) * 1968-04-24 1971-08-30 Asea Ab
DE1763564B2 (de) * 1968-06-25 1972-08-17 Siemens AG, 1000 Berlin u. 8000 München Stabilisierte differentialschutzeinrichtung fuer sammelschienen mit mehreren abzweigen
DE1956527C3 (de) * 1969-11-11 1973-01-04 Siemens Ag, 1000 Berlin U. 8000 Muenchen Differentialschutzeinrichtung
US3974423A (en) * 1974-11-01 1976-08-10 Evgeny Mefodievich Ulyanitsky Differential current protective device

Also Published As

Publication number Publication date
SE408983B (sv) 1979-07-16
FR2408933B1 (it) 1983-12-09
SE7712755L (sv) 1979-05-12
DE2846570A1 (de) 1979-05-17
US4237512A (en) 1980-12-02
FR2408933A1 (fr) 1979-06-08
GB2010031A (en) 1979-06-20
GB2010031B (en) 1982-04-28
CH639223A5 (de) 1983-10-31
IT7869578A0 (it) 1978-11-10
CA1130437A (en) 1982-08-24

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