SE8505620L - ARRANGEMENTS TO COMPENSATE CAPACITY AND ACTIVE EARTH CURRENTS - Google Patents

ARRANGEMENTS TO COMPENSATE CAPACITY AND ACTIVE EARTH CURRENTS

Info

Publication number
SE8505620L
SE8505620L SE8505620A SE8505620A SE8505620L SE 8505620 L SE8505620 L SE 8505620L SE 8505620 A SE8505620 A SE 8505620A SE 8505620 A SE8505620 A SE 8505620A SE 8505620 L SE8505620 L SE 8505620L
Authority
SE
Sweden
Prior art keywords
control
inductance
compensate
mains
induction unit
Prior art date
Application number
SE8505620A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE458164B (en
SE8505620D0 (en
Inventor
J Hrynkiewicz
L Czernecki
Original Assignee
Wyzsza Szkoa Morska
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 Wyzsza Szkoa Morska filed Critical Wyzsza Szkoa Morska
Publication of SE8505620D0 publication Critical patent/SE8505620D0/en
Publication of SE8505620L publication Critical patent/SE8505620L/en
Publication of SE458164B publication Critical patent/SE458164B/en

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/08—Limitation or suppression of earth fault currents, e.g. Petersen coil

Landscapes

  • Emergency Protection Circuit Devices (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Amplifiers (AREA)
  • Networks Using Active Elements (AREA)
  • Control Of Voltage And Current In General (AREA)

Abstract

A system for compensation of capacitive and active current components in a 3-phase a.c. mains network includes an induction unit 1 connected between an artificial neutral point 2 of the mains supply and earth. The induction unit 1 includes a work winding, two auxiliary windings and means for adjusting the inductance of the work winding. In the event that one phase of the network fails, a fault signal is passed from control-measurement means 5 to a control unit 4. The control unit generates control signals to control the inductance adjustment means so as to vary the inductance of the work coil to compensate the capacitive current component, and to control an impedance converter amplifier 3 which acts on the work winding via the auxiliary windings to compensate the active current component. Compensation of the current components is achieved by bringing the inductance of the induction unit to resonance with the mains capacitance. <IMAGE>
SE8505620A 1984-12-02 1985-11-28 ARRANGEMENTS TO COMPENSATE CAPACITY AND ACTIVE GROUNDINGS SE458164B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL1984250717A PL146510B1 (en) 1984-12-02 1984-12-02 Method of and circuit for neutralization of capacitive and active earth currents

Publications (3)

Publication Number Publication Date
SE8505620D0 SE8505620D0 (en) 1985-11-28
SE8505620L true SE8505620L (en) 1986-06-03
SE458164B SE458164B (en) 1989-02-27

Family

ID=20024332

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8505620A SE458164B (en) 1984-12-02 1985-11-28 ARRANGEMENTS TO COMPENSATE CAPACITY AND ACTIVE GROUNDINGS

Country Status (9)

Country Link
BG (1) BG46758A3 (en)
DD (1) DD240468A5 (en)
DE (1) DE3540613A1 (en)
DK (1) DK557985A (en)
FI (1) FI854575A (en)
GB (1) GB2168209B (en)
NO (1) NO854791L (en)
PL (1) PL146510B1 (en)
SE (1) SE458164B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102780215B (en) * 2012-07-02 2014-07-09 太原理工大学 Mine low voltage power network capacitative current automatic compensation device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB492730A (en) * 1935-12-12 1938-09-26 British Thomson Houston Co Ltd Improvements in and relating to protective systems for electric circuits
GB484999A (en) * 1936-11-12 1938-05-12 Reyrolle A & Co Ltd Improvements in or relating to earth fault control arrangements for polyphase a.c. transmission and distribution systems
GB534062A (en) * 1938-12-23 1941-02-26 British Thomson Houston Co Ltd Improvements in and relating to the protection of alternating electric current systems
GB544838A (en) * 1940-06-19 1942-04-29 British Thomson Houston Co Ltd Improvements in and relating to methods of and means for protecting alternating current electric systems
GB611977A (en) * 1946-05-16 1948-11-05 John Bentley Hansell Improvements relating to electrical earthing reactors

Also Published As

Publication number Publication date
DE3540613A1 (en) 1986-06-05
DK557985D0 (en) 1985-12-02
DD240468A5 (en) 1986-10-29
SE458164B (en) 1989-02-27
BG46758A3 (en) 1990-02-15
PL250717A1 (en) 1986-06-03
GB2168209B (en) 1988-08-03
SE8505620D0 (en) 1985-11-28
NO854791L (en) 1986-06-03
GB8528596D0 (en) 1985-12-24
FI854575A0 (en) 1985-11-20
DK557985A (en) 1986-06-03
PL146510B1 (en) 1989-02-28
FI854575A (en) 1986-06-03
GB2168209A (en) 1986-06-11

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