SE8505620D0 - A SYSTEM FOR COMPENSATION OF CAPACITIVE AND ACTIVE EARTH CURRENTS - Google Patents
A SYSTEM FOR COMPENSATION OF CAPACITIVE AND ACTIVE EARTH CURRENTSInfo
- Publication number
- SE8505620D0 SE8505620D0 SE8505620A SE8505620A SE8505620D0 SE 8505620 D0 SE8505620 D0 SE 8505620D0 SE 8505620 A SE8505620 A SE 8505620A SE 8505620 A SE8505620 A SE 8505620A SE 8505620 D0 SE8505620 D0 SE 8505620D0
- Authority
- SE
- Sweden
- Prior art keywords
- control
- inductance
- compensation
- capacitive
- mains
- Prior art date
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)
- Control Of Voltage And Current In General (AREA)
- Amplifiers (AREA)
- Networks Using Active Elements (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>
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 true SE8505620D0 (en) | 1985-11-28 |
SE8505620L 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)
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)
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 |
-
1984
- 1984-12-02 PL PL1984250717A patent/PL146510B1/en unknown
-
1985
- 1985-11-15 DE DE19853540613 patent/DE3540613A1/en not_active Withdrawn
- 1985-11-18 BG BG72395A patent/BG46758A3/en unknown
- 1985-11-20 GB GB08528596A patent/GB2168209B/en not_active Expired
- 1985-11-20 FI FI854575A patent/FI854575A/en not_active IP Right Cessation
- 1985-11-28 NO NO854791A patent/NO854791L/en unknown
- 1985-11-28 SE SE8505620A patent/SE458164B/en not_active IP Right Cessation
- 1985-11-29 DD DD85283449A patent/DD240468A5/en not_active IP Right Cessation
- 1985-12-02 DK DK557985A patent/DK557985A/en not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
GB2168209A (en) | 1986-06-11 |
DK557985A (en) | 1986-06-03 |
DE3540613A1 (en) | 1986-06-05 |
GB2168209B (en) | 1988-08-03 |
BG46758A3 (en) | 1990-02-15 |
DK557985D0 (en) | 1985-12-02 |
PL146510B1 (en) | 1989-02-28 |
SE458164B (en) | 1989-02-27 |
FI854575A (en) | 1986-06-03 |
FI854575A0 (en) | 1985-11-20 |
NO854791L (en) | 1986-06-03 |
PL250717A1 (en) | 1986-06-03 |
SE8505620L (en) | 1986-06-03 |
DD240468A5 (en) | 1986-10-29 |
GB8528596D0 (en) | 1985-12-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
AU587986B2 (en) | Circuit arrangement for the compensation of fluctuations in the transmission factor of a magnetic field sensor | |
GB1456575A (en) | Reactive power compensator for electrical power transmission systems | |
SE8406479D0 (en) | PROCEDURE FOR COMPENSATION OF MAGNETIC SIZE-MEDIUM MAGNETIC PROPERTY PLANT | |
ATE37254T1 (en) | ARRANGEMENT FOR LIMITING THE EARTH LEAKAGE CURRENT IN POWER NETWORKS. | |
US4209757A (en) | Circuit for compensating harmonic currents in an electric consumer arrangement | |
SE8505620D0 (en) | A SYSTEM FOR COMPENSATION OF CAPACITIVE AND ACTIVE EARTH CURRENTS | |
FI894654A0 (en) | LINJEAVBOEJNINGSKRETS FOER ETT BILDROER. | |
GB2303260A (en) | Circuitry for reduction of the magnetic field in the vicinity of multiphase power lines | |
SE8200936L (en) | CURRENT CONTROL, HEADLINE MODULATED MACHINE DRIVER WITH INVERTER | |
EP0368594A3 (en) | Generator and excitation system | |
EP1024574A3 (en) | Method for connecting a transformer to an alternating voltage supply and circuit for implementing this method | |
JPS5464417A (en) | Generation circuit for high voltage | |
SE9001165D0 (en) | DEVICE FOR CONTROL AND CONTROL OF A DC MOTOR | |
SU911747A1 (en) | X-ray generator | |
SU1226566A1 (en) | Device for automatic compensating of capacitive earth leakage current in electric power networks with 6-35 kv voltage | |
SU902159A1 (en) | Device for improving switching of commutator dc electric motor | |
SU603975A2 (en) | Three-phase inductive-capacitive converter of voltage source to current source | |
US2914722A (en) | Electrical system for compensating for line voltage variations | |
SU935900A1 (en) | Direct current stabilizer | |
SU665360A1 (en) | Current symmetric component relay | |
SU607206A2 (en) | Dc voltage stabilizer | |
SU792474A1 (en) | Device for compensating for earthing active current | |
SU805279A1 (en) | Stabilized dc voltage source | |
SU509970A1 (en) | Device for stabilizing asynchronous generator voltage | |
JPS5458811A (en) | Automatic power factor regulator for self-exciting ac generator |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
NUG | Patent has lapsed |
Ref document number: 8505620-8 Effective date: 19920604 Format of ref document f/p: F |