GB1390195A - Electrical distance protection systems - Google Patents

Electrical distance protection systems

Info

Publication number
GB1390195A
GB1390195A GB1790372A GB1790372A GB1390195A GB 1390195 A GB1390195 A GB 1390195A GB 1790372 A GB1790372 A GB 1790372A GB 1790372 A GB1790372 A GB 1790372A GB 1390195 A GB1390195 A GB 1390195A
Authority
GB
United Kingdom
Prior art keywords
voltage
zone
amplifier
proportional
input
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
GB1790372A
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of GB1390195A publication Critical patent/GB1390195A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H02H7/30—Staggered disconnection
    • 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
    • H02H3/38—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 both voltage and current; responsive to phase angle between voltage and current
    • H02H3/382—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 both voltage and current; responsive to phase angle between voltage and current involving phase comparison between current and voltage or between values derived from current and voltage

Landscapes

  • Amplifiers (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Burglar Alarm Systems (AREA)

Abstract

1390195 Protective arrangements SIEMENS AG 18 April 1972 [22 April 1971] 17903/72 Heading H2K In a static multi-zone distance protective arrangement, difference voltages are obtained by comparison of a voltage proportional to the instantaneous current J 1 of a protected system with selected voltages proportional to the instantaneous voltage U 1 of the system, each difference voltage being applied to a separate amplifier V<SP>1</SP> 1 , V<SP>11</SP> 1 for each zone, each amplifier having its output connected to one input of a respective coincidence element UG 1 , UG 2 having at least one further input L 1 , L 2 connected to a timer (not shown), and the outputs of the coincidence elements being connected to a common analyzer circuit (not shown). A further amplifier Vh may supply a voltage proportional to the system voltage to another input of each coincidence element which may be an AND gate, Fig. 2 (not shown), illustrates a three-zone arrangement. (For Figure see next page.)
GB1790372A 1971-04-22 1972-04-18 Electrical distance protection systems Expired GB1390195A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712120361 DE2120361C3 (en) 1971-04-22 1971-04-22 Distance protection arrangement

Publications (1)

Publication Number Publication Date
GB1390195A true GB1390195A (en) 1975-04-09

Family

ID=5805967

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1790372A Expired GB1390195A (en) 1971-04-22 1972-04-18 Electrical distance protection systems

Country Status (7)

Country Link
JP (1) JPS5223055B2 (en)
CH (1) CH534445A (en)
DE (1) DE2120361C3 (en)
FR (1) FR2134024B1 (en)
GB (1) GB1390195A (en)
IT (1) IT951847B (en)
SE (1) SE385524B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5215156B2 (en) * 1972-12-20 1977-04-27
CH635710A5 (en) * 1979-01-03 1983-04-15 Bbc Brown Boveri & Cie DEVICE FOR FAULT DIRECTION COMPARATIVE PROTECTION FOR A CABLE OF AN ELECTRICAL NETWORK.
JPS57131592U (en) * 1981-02-05 1982-08-16

Also Published As

Publication number Publication date
FR2134024A1 (en) 1972-12-01
FR2134024B1 (en) 1975-06-20
IT951847B (en) 1973-07-10
DE2120361C3 (en) 1978-04-06
JPS4740031A (en) 1972-12-09
SE385524B (en) 1976-07-05
DE2120361A1 (en) 1972-11-02
DE2120361B2 (en) 1977-08-04
CH534445A (en) 1973-02-28
JPS5223055B2 (en) 1977-06-22

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee