GB1133091A - Improved coupling circuit for alternating current networks - Google Patents

Improved coupling circuit for alternating current networks

Info

Publication number
GB1133091A
GB1133091A GB4221965A GB4221965A GB1133091A GB 1133091 A GB1133091 A GB 1133091A GB 4221965 A GB4221965 A GB 4221965A GB 4221965 A GB4221965 A GB 4221965A GB 1133091 A GB1133091 A GB 1133091A
Authority
GB
United Kingdom
Prior art keywords
coupling
source
machine
resistor
series
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
GB4221965A
Inventor
Kenneth Meirig Jones
Hemesh Laxmidas Thanawala
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.)
Associated Electrical Industries Ltd
Original Assignee
Associated Electrical Industries Ltd
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 Associated Electrical Industries Ltd filed Critical Associated Electrical Industries Ltd
Priority to GB4221965A priority Critical patent/GB1133091A/en
Publication of GB1133091A publication Critical patent/GB1133091A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/04—Circuit arrangements for ac mains or ac distribution networks for connecting networks of the same frequency but supplied from different sources

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

1,133,091. Coupling arrangements for A.C. networks. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. 22 Sept., 1966 [5 Oct., 1965], No. 42219/65. Heading H2H. In an A.C. system comprising power sources 1<SP>1</SP> , 2<SP>1</SP> , loads 15, 16, bus-bars 12, 13, circuitbreakers 7... 10 and a transmission line formed by two parallel feeders 23, 24, a coupling 11 is inserted to prevent the synchronous machines in the sources 11, 2<SP>1</SP> from falling out of step when an earth fault occurs at point 14 and the power flow through line 23, 24 is normally from bus-bar 12 to 13. The coupling 11 is of the type comprising a series inductance and capacitance combination resonant at normal network operation to present a predetermined low impedance and detuned automatically by a predetermined excess current which saturates a reactor connected in series with a resistor across the capacitor, Fig. 1 (not shown). The value of the resistor is chosen so that during fault conditions it imposes on the machine(s) in the source 1<SP>1</SP> an additional power demand to slow the machine(s) down simultaneously with the machine(s) in source 2<SP>1</SP>, the latter effect being due to source 2<SP>1</SP> having to supply during fault conditions a greater than normal proportion of the power required by the load 16. The coupling operation is arranged so that it presents a sufficiently low impedance during the "swing" conditions following fault removal to maintain stability in the system and prevent pole slipping. Couplings may be connected at other points in the system as required and may be of the type wherein the resistor is in series with a spark gap or surge diverter instead of a saturable reactor. Use may be made of various components of the system, e.g. machines, transformers, lines or cables, to contribute towards the inductance and capacitance of the coupling, whose power demand to slow down the machine(s) in source 1<SP>1</SP> may be provided or supplemented by the hysteresis effect in a reactor core.
GB4221965A 1965-10-05 1965-10-05 Improved coupling circuit for alternating current networks Expired GB1133091A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4221965A GB1133091A (en) 1965-10-05 1965-10-05 Improved coupling circuit for alternating current networks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4221965A GB1133091A (en) 1965-10-05 1965-10-05 Improved coupling circuit for alternating current networks

Publications (1)

Publication Number Publication Date
GB1133091A true GB1133091A (en) 1968-11-06

Family

ID=10423376

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4221965A Expired GB1133091A (en) 1965-10-05 1965-10-05 Improved coupling circuit for alternating current networks

Country Status (1)

Country Link
GB (1) GB1133091A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4062512A4 (en) * 2019-11-22 2024-04-10 Phasetown Llc Power factor adjustment method and apparatus in waveguide circuit or transmission line circuit, and power generating transmission line system using the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4062512A4 (en) * 2019-11-22 2024-04-10 Phasetown Llc Power factor adjustment method and apparatus in waveguide circuit or transmission line circuit, and power generating transmission line system using the same
US11966243B2 (en) 2019-11-22 2024-04-23 Phasetown, Llc Power factor adjustment method and apparatus in waveguide circuit or transmission line circuit, and power generating transmission line system using the same

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