GB1355827A - Electrical power distribution system - Google Patents

Electrical power distribution system

Info

Publication number
GB1355827A
GB1355827A GB5847971A GB5847971A GB1355827A GB 1355827 A GB1355827 A GB 1355827A GB 5847971 A GB5847971 A GB 5847971A GB 5847971 A GB5847971 A GB 5847971A GB 1355827 A GB1355827 A GB 1355827A
Authority
GB
United Kingdom
Prior art keywords
circuit
breaker
current
fault
control circuit
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
GB5847971A
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.)
Merlin Gerin SA
Original Assignee
Merlin Gerin SA
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
Priority claimed from FR7045701A external-priority patent/FR2117789B1/fr
Priority claimed from FR7133831A external-priority patent/FR2153150B1/fr
Application filed by Merlin Gerin SA filed Critical Merlin Gerin SA
Publication of GB1355827A publication Critical patent/GB1355827A/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
    • H02H3/305—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 current comparison
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00—Details of emergency protective circuit arrangements
    • H02H1/0007—Details of emergency protective circuit arrangements concerning the detecting means
    • 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
    • H02H7/263—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 involving transmissions of measured values

Abstract

1355827 Protective arrangements MERLIN GERIN 16 Dec 1971 [17 Dec 1970 20 Sept 1971] 58479/71 Heading H2K A distribution system comprising a first junction 144 interconnecting at least one incoming conductor 12 with a plurality of outgoing conductors 14... 18 which form incoming conductors to further junctions 145 ... 149 with outgoing conductors 20 ... 34, is protected by a single means 68 ... 86 for detecting the current in each conductor, a circuit-breaker 36 ... 42 in each incoming conductor, instantaneous tripping means 60... 66 for each of these circuit-breakers, and a control circuit interconnecting the detectors at each junction with the associated tripping means in such a manner that the signals detected from the currents at the respective junctions normally sum to zero. In the arrangement shown, the detecting means are current transformers with their secondary windings connected in a control circuit which is substantially a replica of the protected system. Should a fault occur at E on conductor 32, the fault current flows through transformers 68, 74, 84 in series so that the currents in the control circuit still sum to zero and neither circuit-breaker 36 or 42 is tripped, the fault being cleared by the tripping of a circuitbreaker 56 by its conventional thermal-electromagnetic tripping device 116. Should the fault not be cleared, the current flowing in the control circuit causes a fuse 100 to blow, the resulting shunting of the current through the tripping means 66 trips the circuit-breaker 42. If a fault occurs at D, the tripping means 64 is energized to trip the circuit-breaker 40, but should the circuit-breaker not clear the fault, then a fuse 94 blows to cause the tripping means 60 to be energized to trip the circuit-breaker 36. This circuit-breaker has conventional tripping means 126 which are operative should the control circuit fail. In a modification, Fig. 2 (not shown), the current detectors are Hall-effect elements, the control circuit being arranged so that the voltages produced by the elements associated with each junction normally sum to zero. Reference is also made to the use of detectors, each comprising a torus with a large air gap and a secondary winding connected to a high impedance so that the signal produced is proportional to the rate of change of the current.
GB5847971A 1970-12-17 1971-12-16 Electrical power distribution system Expired GB1355827A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7045701A FR2117789B1 (en) 1970-12-17 1970-12-17
FR7133831A FR2153150B1 (en) 1971-09-20 1971-09-20

Publications (1)

Publication Number Publication Date
GB1355827A true GB1355827A (en) 1974-06-05

Family

ID=26216115

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5847971A Expired GB1355827A (en) 1970-12-17 1971-12-16 Electrical power distribution system

Country Status (5)

Country Link
BE (1) BE776821A (en)
CH (1) CH554096A (en)
DE (1) DE2162414A1 (en)
GB (1) GB1355827A (en)
IT (1) IT943248B (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0092335A1 (en) * 1982-04-16 1983-10-26 LUCAS INDUSTRIES public limited company Apparatus for monitoring current levels in an A.C. transmission line
WO2004008600A3 (en) * 2002-07-12 2004-03-18 Mc Graw Edison Co Electrical network protection system
US6810069B2 (en) 2002-07-12 2004-10-26 Mcgraw-Edison Company Electrical arc furnace protection system
US6940702B2 (en) 2002-07-12 2005-09-06 Mcgraw-Edison Company Electrical protection system
US7180717B2 (en) 2002-07-12 2007-02-20 Cooper Technologies Company Electrical network protection system
WO2008146040A1 (en) * 2007-06-01 2008-12-04 Kevin Jones System for identifying fire risk
US7564233B2 (en) 2006-11-06 2009-07-21 Cooper Technologies Company Shielded Rogowski coil assembly and methods
US7638999B2 (en) 2006-04-07 2009-12-29 Cooper Technologies Company Protective relay device, system and methods for Rogowski coil sensors
US7738221B2 (en) 2007-12-07 2010-06-15 Cooper Technologies Company Transformer inrush current detector
US20100312505A1 (en) * 2007-10-30 2010-12-09 Frank Berger Short-circuit recognition method for an electric network
EP2658065A1 (en) * 2012-04-26 2013-10-30 Hamilton Sundstrand Corporation Method for improving power distribution protection
EP2654154A3 (en) * 2012-04-17 2017-07-05 Hamilton Sundstrand Corporation Power management and distribution system having a fault detection and isolation assembly and method
CN113611497A (en) * 2021-07-23 2021-11-05 深圳供电局有限公司 220kV transformer low-voltage side double-branch outgoing line structure and method

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE446678B (en) * 1981-11-02 1986-09-29 Asea Ab METHOD TO DETECT EARTH ERRORS IN NET FOR DISTRIBUTION OF ELECTRIC POWER AND DEVICE FOR IMPLEMENTATION OF THE METHOD
DE9112575U1 (en) * 1991-10-09 1992-10-15 Schaltbau Gmbh, 8000 Muenchen, De
DE102006037227B3 (en) * 2006-08-09 2008-02-14 Siemens Ag Safety switch for selective current disconnection, on a current overload, has a current overload path which is dead on normal working and triggers the selective switch on a short circuit

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0092335A1 (en) * 1982-04-16 1983-10-26 LUCAS INDUSTRIES public limited company Apparatus for monitoring current levels in an A.C. transmission line
WO2004008600A3 (en) * 2002-07-12 2004-03-18 Mc Graw Edison Co Electrical network protection system
US6810069B2 (en) 2002-07-12 2004-10-26 Mcgraw-Edison Company Electrical arc furnace protection system
US6940702B2 (en) 2002-07-12 2005-09-06 Mcgraw-Edison Company Electrical protection system
US7180717B2 (en) 2002-07-12 2007-02-20 Cooper Technologies Company Electrical network protection system
AU2003247885B2 (en) * 2002-07-12 2007-08-16 Mcgraw-Edison Company Electrical network protection system
CN1682419B (en) * 2002-07-12 2012-12-05 库帕技术公司 Electrical network protection system
US7638999B2 (en) 2006-04-07 2009-12-29 Cooper Technologies Company Protective relay device, system and methods for Rogowski coil sensors
US7902813B2 (en) 2006-04-07 2011-03-08 Cooper Technologies Company Protective digital relay device
US7564233B2 (en) 2006-11-06 2009-07-21 Cooper Technologies Company Shielded Rogowski coil assembly and methods
US7902812B2 (en) 2006-11-06 2011-03-08 Cooper Technologies Company Rogowski coil assembly and methods
WO2008146040A1 (en) * 2007-06-01 2008-12-04 Kevin Jones System for identifying fire risk
US20100312505A1 (en) * 2007-10-30 2010-12-09 Frank Berger Short-circuit recognition method for an electric network
US8335656B2 (en) * 2007-10-30 2012-12-18 Siemens Aktiengesellschaft Short-circuit recognition method for an electric network
US7738221B2 (en) 2007-12-07 2010-06-15 Cooper Technologies Company Transformer inrush current detector
EP2654154A3 (en) * 2012-04-17 2017-07-05 Hamilton Sundstrand Corporation Power management and distribution system having a fault detection and isolation assembly and method
EP2658065A1 (en) * 2012-04-26 2013-10-30 Hamilton Sundstrand Corporation Method for improving power distribution protection
US9362736B2 (en) 2012-04-26 2016-06-07 Hamilton Sundstrand Corporation Method for improving power distribution protection
CN113611497A (en) * 2021-07-23 2021-11-05 深圳供电局有限公司 220kV transformer low-voltage side double-branch outgoing line structure and method

Also Published As

Publication number Publication date
IT943248B (en) 1973-04-02
CH554096A (en) 1974-09-13
DE2162414A1 (en) 1972-06-22
BE776821A (en) 1972-04-17

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Legal Events

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