CA1025992A - Segregated phase comparison relaying apparatus - Google Patents

Segregated phase comparison relaying apparatus

Info

Publication number
CA1025992A
CA1025992A CA182,221A CA182221A CA1025992A CA 1025992 A CA1025992 A CA 1025992A CA 182221 A CA182221 A CA 182221A CA 1025992 A CA1025992 A CA 1025992A
Authority
CA
Canada
Prior art keywords
phase comparison
relaying apparatus
segregated phase
comparison relaying
segregated
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
CA182,221A
Other languages
English (en)
French (fr)
Other versions
CA182221S (en
Inventor
William A. Strickland (Jr.)
Walter L. Hinman (Jr.)
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.)
Westinghouse Electric 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
Application granted granted Critical
Publication of CA1025992A publication Critical patent/CA1025992A/en
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
    • 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
    • H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
    • H02H7/261—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Feedback Control In General (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Radio Relay Systems (AREA)
CA182,221A 1972-10-04 1973-09-28 Segregated phase comparison relaying apparatus Expired CA1025992A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US29503172A 1972-10-04 1972-10-04

Publications (1)

Publication Number Publication Date
CA1025992A true CA1025992A (en) 1978-02-07

Family

ID=23135936

Family Applications (1)

Application Number Title Priority Date Filing Date
CA182,221A Expired CA1025992A (en) 1972-10-04 1973-09-28 Segregated phase comparison relaying apparatus

Country Status (9)

Country Link
JP (1) JPS6147045B2 (enrdf_load_stackoverflow)
AR (1) AR207747A1 (enrdf_load_stackoverflow)
BR (1) BR7307655D0 (enrdf_load_stackoverflow)
CA (1) CA1025992A (enrdf_load_stackoverflow)
FR (1) FR2202390B1 (enrdf_load_stackoverflow)
GB (1) GB1449682A (enrdf_load_stackoverflow)
IN (1) IN140736B (enrdf_load_stackoverflow)
IT (1) IT997405B (enrdf_load_stackoverflow)
SE (1) SE397908B (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3986079A (en) * 1975-02-07 1976-10-12 Westinghouse Electric Corporation Offset keying technique for segregated phase comparison relaying

Also Published As

Publication number Publication date
IN140736B (enrdf_load_stackoverflow) 1976-12-18
IT997405B (it) 1975-12-30
SE397908B (sv) 1977-11-21
GB1449682A (en) 1976-09-15
JPS49132540A (enrdf_load_stackoverflow) 1974-12-19
FR2202390B1 (enrdf_load_stackoverflow) 1980-07-25
FR2202390A1 (enrdf_load_stackoverflow) 1974-05-03
JPS6147045B2 (enrdf_load_stackoverflow) 1986-10-17
BR7307655D0 (pt) 1974-08-22
AR207747A1 (es) 1976-10-29
AU6102873A (en) 1975-04-10

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