IN2014KN01196A - System apparatus and method for reducing inrush current in a three phase transformer - Google Patents
System apparatus and method for reducing inrush current in a three phase transformerInfo
- Publication number
- IN2014KN01196A IN2014KN01196A IN1196/KOLNP/2014A IN1196KON2014A IN2014KN01196A IN 2014KN01196 A IN2014KN01196 A IN 2014KN01196A IN 1196KON2014 A IN1196KON2014 A IN 1196KON2014A IN 2014KN01196 A IN2014KN01196 A IN 2014KN01196A
- Authority
- IN
- India
- Prior art keywords
- flux
- transformer
- inrush current
- core segments
- level
- Prior art date
Links
- 230000004907 flux Effects 0.000 abstract 7
- 238000004804 winding Methods 0.000 abstract 5
- 239000003990 capacitor Substances 0.000 abstract 1
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
- H02H7/04—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 for transformers
-
- 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
- H02H9/001—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection limiting speed of change of electric quantities, e.g. soft switching on or off
- H02H9/002—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection limiting speed of change of electric quantities, e.g. soft switching on or off limiting inrush current on switching on of inductive loads subjected to remanence, e.g. transformers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Protection Of Transformers (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
A system for reducing inrush current in a three phase utility transformer upon energization of the transformer by an applied three phase voltage utilizes a pre flux circuit for establishing residual flux levels in the core segments of the primary windings of the transformer which are near the prospective flux levels established in the core segments by the applied voltage. The pre flux circuit includes a prefixing capacitor which after being charged to a predetermined voltage level is discharged serially through two of the primary windings to establish the predetermined flux levels in the core segments of the two windings and a reduced flux level in the core segment of the remaining primary winding. The transformer is energized at the instant of positively referenced peak phase voltage to the third primary winding such that prospective and residual flux approach a near equal level in all three core segments and inrush current is reduced.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13/347,563 US8878391B2 (en) | 2012-01-10 | 2012-01-10 | System, apparatus, and method for reducing inrush current in a three-phase transformer |
| PCT/US2012/068922 WO2013106150A1 (en) | 2012-01-10 | 2012-12-11 | System, apparatus, and method for reducing inrush current in a three-phase transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| IN2014KN01196A true IN2014KN01196A (en) | 2015-10-16 |
Family
ID=48743434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IN1196/KOLNP/2014A IN2014KN01196A (en) | 2012-01-10 | 2014-06-03 | System apparatus and method for reducing inrush current in a three phase transformer |
Country Status (8)
| Country | Link |
|---|---|
| US (2) | US8878391B2 (en) |
| AU (1) | AU2012364711B2 (en) |
| BR (1) | BR112014016784A8 (en) |
| CA (1) | CA2859369C (en) |
| ES (1) | ES2524519R1 (en) |
| IN (1) | IN2014KN01196A (en) |
| MX (1) | MX2014007621A (en) |
| WO (1) | WO2013106150A1 (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8878391B2 (en) | 2012-01-10 | 2014-11-04 | Schweitzer Engineering Laboratories, Inc | System, apparatus, and method for reducing inrush current in a three-phase transformer |
| JP6054163B2 (en) * | 2012-12-14 | 2016-12-27 | 株式会社東芝 | Excitation current suppression system |
| JP5769901B1 (en) * | 2014-06-09 | 2015-08-26 | 三菱電機株式会社 | Phase control device |
| CN107408814A (en) | 2014-06-11 | 2017-11-28 | 阿赛特全球技术有限公司 | Medium and High Voltage Surge Suppression System |
| US10615592B2 (en) * | 2014-06-11 | 2020-04-07 | Indra Sistemas, S.A. | Method for reducing the inrush current of an inductive load |
| JP7008911B2 (en) | 2016-08-23 | 2022-01-25 | ヒタチ・エナジー・スウィツァーランド・アクチェンゲゼルシャフト | Methods for phase-controlled energization of power transformers |
| EP3396687B1 (en) * | 2017-04-28 | 2025-04-09 | Hitachi Energy Ltd | Energizing method of a transformer, and transformer connection assembly |
| US10819105B2 (en) * | 2018-02-27 | 2020-10-27 | David Meisel | Electrical power transformer and motor pre-fluxing device |
| US10855169B1 (en) | 2019-09-10 | 2020-12-01 | Lear Corporation | Configurable multi-phase charger |
| US11575253B2 (en) | 2020-05-12 | 2023-02-07 | Schweitzer Engineering Laboratories, Inc. | Controlled three-pole close for transmission lines |
| US11233389B1 (en) | 2020-10-30 | 2022-01-25 | Schweitzer Engineering Laboratories, Inc. | Controlled three-pole close for transformers |
| US12155197B2 (en) * | 2021-01-08 | 2024-11-26 | Eaton Intelligent Power Limited | Isolation apparatus and method of a fault segment in a transformer loop |
| US11996688B2 (en) | 2021-05-12 | 2024-05-28 | Schweitzer Engineering Laboratories, Inc. | Method of controlled switching for transformers using transformer residual flux |
| EP4102667A1 (en) | 2021-06-09 | 2022-12-14 | Siemens Aktiengesellschaft | Method, device, and system for controlled energizing of a transformer in a power grid |
| US12316112B2 (en) | 2022-07-12 | 2025-05-27 | Schweitzer Engineering Laboratories, Inc. | Breaker control units and related systems and methods |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4757263A (en) | 1987-05-01 | 1988-07-12 | Tennessee Valley Authority | Insulation power factor alarm monitor |
| US4914382A (en) | 1987-10-14 | 1990-04-03 | Hydro-Quebec | High voltage measuring circuit coupled to the capacitive grounding tap bushing of an HV device |
| US5430599A (en) | 1993-03-18 | 1995-07-04 | Hydro-Quebec | System for opening/closing circuit breakers |
| US5703745A (en) | 1995-10-20 | 1997-12-30 | Schweitzer Engineering Laboratories, Inc. | System for detection of transients from a coupling capacitor voltage transformer used in a protective relay |
| US6028754A (en) | 1995-10-20 | 2000-02-22 | Schweitzer Engineering Laboratories, Inc. | System for preventing undesired protective relay tripping actions due to coupling capacitor voltage transformer transients |
| JP2001218354A (en) * | 1999-11-25 | 2001-08-10 | Mitsubishi Electric Corp | Phase control switchgear |
| GB0010720D0 (en) | 2000-05-03 | 2000-06-28 | Ghassemi Foroozan | Power quality sensors for conventional capacitor coupled voltage transformers |
| US6865063B2 (en) | 2002-11-12 | 2005-03-08 | Semiconductor Components Industries, Llc | Integrated inrush current limiter circuit and method |
| JP4407561B2 (en) * | 2005-03-31 | 2010-02-03 | 三菱電機株式会社 | Residual magnetic flux measuring device |
| JP4896858B2 (en) * | 2006-11-29 | 2012-03-14 | 株式会社東芝 | Apparatus and method for suppressing magnetizing inrush current of transformer |
| US7880343B2 (en) | 2008-04-07 | 2011-02-01 | Toshiba International Corporation | Drive isolation transformer controller and method |
| US8350556B2 (en) | 2009-08-25 | 2013-01-08 | The United States of America as represented by the Secretary of Commerce, NIST | Integrated optical element and Faraday cup |
| US8878391B2 (en) | 2012-01-10 | 2014-11-04 | Schweitzer Engineering Laboratories, Inc | System, apparatus, and method for reducing inrush current in a three-phase transformer |
-
2012
- 2012-01-10 US US13/347,563 patent/US8878391B2/en active Active
- 2012-12-11 CA CA2859369A patent/CA2859369C/en not_active Expired - Fee Related
- 2012-12-11 MX MX2014007621A patent/MX2014007621A/en active IP Right Grant
- 2012-12-11 WO PCT/US2012/068922 patent/WO2013106150A1/en not_active Ceased
- 2012-12-11 AU AU2012364711A patent/AU2012364711B2/en not_active Ceased
- 2012-12-11 BR BR112014016784A patent/BR112014016784A8/en not_active IP Right Cessation
- 2012-12-11 ES ES201490069A patent/ES2524519R1/en active Pending
-
2014
- 2014-06-03 IN IN1196/KOLNP/2014A patent/IN2014KN01196A/en unknown
- 2014-10-27 US US14/524,879 patent/US9379535B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| ES2524519A2 (en) | 2014-12-09 |
| CA2859369C (en) | 2016-01-26 |
| US9379535B2 (en) | 2016-06-28 |
| US20130175879A1 (en) | 2013-07-11 |
| US20150043108A1 (en) | 2015-02-12 |
| MX2014007621A (en) | 2014-09-15 |
| CA2859369A1 (en) | 2013-07-18 |
| BR112014016784A2 (en) | 2017-06-13 |
| AU2012364711A1 (en) | 2014-07-17 |
| AU2012364711B2 (en) | 2015-12-17 |
| BR112014016784A8 (en) | 2017-07-04 |
| ES2524519R1 (en) | 2014-12-29 |
| WO2013106150A1 (en) | 2013-07-18 |
| US8878391B2 (en) | 2014-11-04 |
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