IT7927088A0 - Rele' di protezione. - Google Patents

Rele' di protezione.

Info

Publication number: IT7927088A0
Authority: IT; Italy
Prior art keywords: protection relay; relay; protection
Prior art date: 1978-11-08

Application number

IT7927088A

Other languages

English (en)

Other versions

IT1125624B (it

Inventor

Shan C Sun

Larry L Church

Original Assignee

Westinghouse Electric Corp

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.)

1978-11-08

Filing date

1979-11-07

Publication date

1979-11-07

1979-11-07 Application filed by Westinghouse Electric Corp filed Critical Westinghouse Electric Corp

1979-11-07 Publication of IT7927088A0 publication Critical patent/IT7927088A0/it

1986-05-14 Application granted granted Critical

1986-05-14 Publication of IT1125624B publication Critical patent/IT1125624B/it

Links

238000004353 relayed correlation spectroscopy Methods 0.000 title 1

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
- H02H3/46—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 frequency deviations
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/06—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric generators; for synchronous capacitors

Landscapes

Engineering & Computer Science (AREA)
Power Engineering (AREA)
Control Of Eletrric Generators (AREA)
Protection Of Generators And Motors (AREA)
Emergency Protection Circuit Devices (AREA)

IT27088/79A 1978-11-08 1979-11-07 Rele' di protezione IT1125624B (it)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US05/959,045 US4208687A (en)	1978-11-08	1978-11-08	Protective relay apparatus

Publications (2)

Publication Number	Publication Date
IT7927088A0 true IT7927088A0 (it)	1979-11-07
IT1125624B IT1125624B (it)	1986-05-14

Family

ID=25501607

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
IT27088/79A IT1125624B (it)	1978-11-08	1979-11-07	Rele' di protezione

Country Status (11)

Country	Link
US (1)	US4208687A (it)
JP (1)	JPS5566227A (it)
KR (1)	KR830001530B1 (it)
BR (1)	BR7907178A (it)
DE (1)	DE2944521A1 (it)
ES (1)	ES8100568A1 (it)
FR (1)	FR2441285A1 (it)
GB (1)	GB2038119B (it)
IT (1)	IT1125624B (it)
MX (1)	MX150100A (it)
SE (1)	SE7909204L (it)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4470091A (en) *	1982-10-20	1984-09-04	Westinghouse Electric Corp.	Productive relay apparatus for protection from sub-synchronous current oscillations in a power system
US4607217A (en) *	1983-09-28	1986-08-19	Southern California Edison Company, Inc.	Subsynchronous resonance detection
US4903163A (en) *	1989-05-09	1990-02-20	The United States Of America As Represented By The Secretary Of The Interior	Directional harmonic overcurrent relay device
US5453901A (en) *	1993-10-12	1995-09-26	General Electric Co.	Detection and protection of excitation system from diode failure
US5585720A (en) *	1995-10-23	1996-12-17	Western Atlas International, Inc.	Signal processing method for multiexponentially decaying signals and application to nuclear magnetic resonance well logging tools
US5796629A (en) *	1995-12-18	1998-08-18	Abb Power T&D Company, Inc.	Protective relaying system comprising numerical comparator-based line differential processing circuitry
US6774614B2 (en)	2002-02-27	2004-08-10	General Electric Company	Method and apparatus for detecting current
US8575915B2 (en) *	2010-02-16	2013-11-05	Rockwell Automation Technologies, Inc.	Power control system and method
US7939956B1 (en)	2010-04-09	2011-05-10	General Electric Company	Torsional protection system and method for wind turbine
US10622923B2 (en)	2015-06-29	2020-04-14	Vestas Wind Systems A/S	Sub-synchronous resonance damping

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3813593A (en) *	1973-05-04	1974-05-28	Gen Electric	Reduction of turbine generator shaft torques
US3944846A (en) *	1974-03-19	1976-03-16	Southern California Edison Company	Subsynchronous relay
US3992651A (en) *	1975-04-01	1976-11-16	General Electric Company	Active symmetrical component network for protective relays
US4125884A (en) *	1977-01-06	1978-11-14	Westinghouse Electric Corp.	Apparatus for detecting subsynchronous current in power systems
US4106071A (en) *	1977-01-06	1978-08-08	Westinghouse Electric Corp.	Apparatus for protection against subsynchronous currents in a power system

1978
- 1978-11-08 US US05/959,045 patent/US4208687A/en not_active Expired - Lifetime
1979
- 1979-11-03 DE DE19792944521 patent/DE2944521A1/de not_active Withdrawn
- 1979-11-06 BR BR7907178A patent/BR7907178A/pt not_active IP Right Cessation
- 1979-11-06 GB GB7938378A patent/GB2038119B/en not_active Expired
- 1979-11-07 ES ES485761A patent/ES8100568A1/es not_active Expired
- 1979-11-07 IT IT27088/79A patent/IT1125624B/it active
- 1979-11-07 SE SE7909204A patent/SE7909204L/ not_active Application Discontinuation
- 1979-11-08 MX MX179951A patent/MX150100A/es unknown
- 1979-11-08 JP JP14392779A patent/JPS5566227A/ja active Granted
- 1979-11-08 FR FR7927594A patent/FR2441285A1/fr active Granted
- 1979-11-08 KR KR1019790003910A patent/KR830001530B1/ko active

Also Published As

Publication number	Publication date
DE2944521A1 (de)	1980-05-22
IT1125624B (it)	1986-05-14
BR7907178A (pt)	1980-09-16
JPS5566227A (en)	1980-05-19
MX150100A (es)	1984-03-15
JPS5636649B2 (it)	1981-08-25
GB2038119A (en)	1980-07-16
US4208687A (en)	1980-06-17
ES485761A0 (es)	1980-11-01
KR830001530B1 (ko)	1983-08-08
SE7909204L (sv)	1980-05-09
ES8100568A1 (es)	1980-11-01
KR830001747A (ko)	1983-05-18
FR2441285A1 (fr)	1980-06-06
GB2038119B (en)	1982-08-25
FR2441285B1 (it)	1984-01-06

Publication	Publication Date	Title
IT7921452A0 (it)	1979-03-30	Giunti protetici.
IT7927087A0 (it)	1979-11-07	Rele' di protezione.
IT7820121A0 (it)	1978-02-09	Rele' direzionale.
NO791759L (no)	1979-12-03	Plantevernforbindelser.
NL7903029A (nl)	1979-10-26	2'deoxy-5-(2-halogeenvinyl)-uridines.
IT7921036A0 (it)	1979-03-16	Apparecchiatura di calcolo perfezionata.
NL7808373A (nl)	1979-07-17	"golfbreker".
IT7925323A0 (it)	1979-08-29	Rele elettromagnetico.
IT7927088A0 (it)	1979-11-07	Rele' di protezione.
IT8323291A0 (it)	1983-10-13	Rele' ultrarapido perfezionato.
NO793136L (no)	1980-04-01	Beskyttelsesgitter.
IT7927881A0 (it)	1979-12-07	Rele' di sovracorrente digitale.
IT7924413A0 (it)	1979-07-17	Rele' senza contatti.
IT8223624V0 (it)	1982-12-03	Rele' polarizzato.
IT8119112A0 (it)	1981-01-13	Rele' elettromagnetico.
BR7805413A (pt)	1980-03-04	Rele
IT7924613A0 (it)	1979-07-24	Rele' elettromagnetico.
IT8221086A0 (it)	1982-05-05	Rele' elettromagnetico.
NL7900209A (nl)	1979-07-13	Onderbreker.
NL7900005A (nl)	1979-07-05	11-alkanoyl-4"-desoxy-4"-isonitrilo-oleandomycine-deri- vaten.
IT7924297A0 (it)	1979-07-11	Rele' elettromagnetico.
IT7920251A0 (it)	1979-02-16	Rele' polarizzato.
IT8021025A0 (it)	1980-03-28	Rele' elettromagnetico.
IT7831094A0 (it)	1978-12-21	Rele' bimetallico.
NL7900204A (nl)	1979-07-13	Onderbreker.