ES447978A1 - Rele de proteccion contra perdida de sincronismo para linea de transmision electrica de tension alterna. - Google Patents

Rele de proteccion contra perdida de sincronismo para linea de transmision electrica de tension alterna.

Info

Publication number
ES447978A1
ES447978A1 ES447978A ES447978A ES447978A1 ES 447978 A1 ES447978 A1 ES 447978A1 ES 447978 A ES447978 A ES 447978A ES 447978 A ES447978 A ES 447978A ES 447978 A1 ES447978 A1 ES 447978A1
Authority
ES
Spain
Prior art keywords
timing
voltages
devices
phase relationship
timing signals
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
ES447978A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CBS Corp
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.)
Filing date
Publication date
Application filed by Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Publication of ES447978A1 publication Critical patent/ES447978A1/es
Expired legal-status Critical Current

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
    • H02H3/30—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 using pilot wires or other signalling channel
    • H02H3/302—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 using pilot wires or other signalling channel involving phase comparison

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
ES447978A 1975-05-14 1976-05-14 Rele de proteccion contra perdida de sincronismo para linea de transmision electrica de tension alterna. Expired ES447978A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US57751575A 1975-05-14 1975-05-14

Publications (1)

Publication Number Publication Date
ES447978A1 true ES447978A1 (es) 1977-06-16

Family

ID=24309063

Family Applications (1)

Application Number Title Priority Date Filing Date
ES447978A Expired ES447978A1 (es) 1975-05-14 1976-05-14 Rele de proteccion contra perdida de sincronismo para linea de transmision electrica de tension alterna.

Country Status (13)

Country Link
US (1) US4079434A (es)
JP (1) JPS51140148A (es)
AR (1) AR209960A1 (es)
AU (1) AU504516B2 (es)
BR (1) BR7602957A (es)
DE (1) DE2621071A1 (es)
ES (1) ES447978A1 (es)
FR (1) FR2311437A1 (es)
GB (1) GB1552852A (es)
IN (1) IN143431B (es)
IT (1) IT1068978B (es)
MX (1) MX143924A (es)
SE (1) SE426637B (es)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4658323A (en) * 1985-06-10 1987-04-14 General Electric Company RMS calculation circuit for digital circuit interrupters
NO864043L (no) * 1986-10-10 1988-04-11 Gn I Energet I Im G M Krzhizha Anordning for direktiv beskyttelse av kraftledninger med baereboelgestroemoverfoering.
US5121282A (en) * 1990-03-30 1992-06-09 White Orval C Arcing fault detector
US5223795A (en) * 1992-07-30 1993-06-29 Blades Frederick K Method and apparatus for detecting arcing in electrical connections by monitoring high frequency noise
US5434509A (en) * 1992-07-30 1995-07-18 Blades; Frederick K. Method and apparatus for detecting arcing in alternating-current power systems by monitoring high-frequency noise
US5432455A (en) * 1992-07-30 1995-07-11 Blades; Frederick K. Method and apparatus for detecting arcing in alternating current power systems by monitoring high-frequency noise
AU2010329540A1 (en) * 2009-12-10 2012-07-05 North-West University Pole-slip protection system and method for synchronous machines

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3277345A (en) * 1963-02-07 1966-10-04 Gen Electric Static distance relay with reduced transient overreach
GB1056881A (en) * 1964-03-25 1967-02-01 English Electric Co Ltd Electrical relays
GB1172536A (en) * 1966-08-31 1969-12-03 English Electric Co Ltd Improvements in Electrical Protective Relays
US3523213A (en) * 1968-04-19 1970-08-04 Westinghouse Electric Corp Distance relay with rectangular characteristics
US3599044A (en) * 1970-04-30 1971-08-10 Fuji Electric Co Ltd Superhigh-speed relaying system and apparatus for protection of power systems
DE2064679C3 (de) * 1970-12-31 1973-11-29 Hartmann & Braun Ag, 6000 Frankfurt Elektronische Distanzmeßschaltung
JPS5326296B2 (es) * 1972-05-10 1978-08-01
US3731152A (en) * 1972-05-25 1973-05-01 Westinghouse Electric Corp Impedance distance relay
GB1422346A (es) * 1972-11-28 1976-01-28
US3885199A (en) * 1973-07-02 1975-05-20 Hitachi Ltd Protective relaying device

Also Published As

Publication number Publication date
AU504516B2 (en) 1979-10-18
FR2311437B1 (es) 1979-03-16
US4079434A (en) 1978-03-14
SE426637B (sv) 1983-01-31
DE2621071A1 (de) 1976-11-25
BR7602957A (pt) 1977-06-07
MX143924A (es) 1981-08-04
JPS51140148A (en) 1976-12-02
IN143431B (es) 1977-11-26
SE7605349L (sv) 1976-11-15
AU1371276A (en) 1977-11-10
IT1068978B (it) 1985-03-21
AR209960A1 (es) 1977-06-15
GB1552852A (en) 1979-09-19
FR2311437A1 (fr) 1976-12-10

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19980202