BR8606027A - Rele diferencial para a protecao de um transformador - Google Patents
Rele diferencial para a protecao de um transformadorInfo
- Publication number
- BR8606027A BR8606027A BR8606027A BR8606027A BR8606027A BR 8606027 A BR8606027 A BR 8606027A BR 8606027 A BR8606027 A BR 8606027A BR 8606027 A BR8606027 A BR 8606027A BR 8606027 A BR8606027 A BR 8606027A
- Authority
- BR
- Brazil
- Prior art keywords
- transformer
- protecting
- differential relay
- relay
- differential
- Prior art date
Links
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
- 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
- H02H7/045—Differential protection of transformers
- H02H7/0455—Differential protection of transformers taking into account saturation of current transformers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Protection Of Transformers (AREA)
- Emergency Protection Circuit Devices (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/807,136 US4704653A (en) | 1985-12-10 | 1985-12-10 | Transformer differential relay with speed-up apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
BR8606027A true BR8606027A (pt) | 1987-09-15 |
Family
ID=25195658
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR8606027A BR8606027A (pt) | 1985-12-10 | 1986-12-08 | Rele diferencial para a protecao de um transformador |
Country Status (8)
Country | Link |
---|---|
US (1) | US4704653A (pt) |
JP (1) | JPS62144535A (pt) |
KR (1) | KR940002918B1 (pt) |
CN (1) | CN1007309B (pt) |
BR (1) | BR8606027A (pt) |
CA (1) | CA1267718A (pt) |
MX (1) | MX161503A (pt) |
ZA (1) | ZA868753B (pt) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4837654A (en) * | 1987-05-05 | 1989-06-06 | Wenbing Chen | Control apparatus for three phase alternating current load protection |
US5006769A (en) * | 1989-04-05 | 1991-04-09 | Asea Brown Boveri Ltd. | Arrangement for detecting winding shorts in the rotor winding of electrical machines |
US5627712A (en) * | 1990-04-19 | 1997-05-06 | General Electric Company | Transformer differential relay |
US5111123A (en) * | 1990-11-16 | 1992-05-05 | Delco Electronics Corporation | Motor driver interface fault detection apparatus using initial turn-on and noise timers |
CN1037392C (zh) * | 1995-11-24 | 1998-02-11 | 孙志杰 | 变压器差动保护的波形对称方法 |
US6483680B1 (en) | 1999-10-13 | 2002-11-19 | General Electric Co. | Magnetizing inrush restraint method and relay for protection of power transformers |
US6525543B1 (en) * | 2000-10-20 | 2003-02-25 | Schweitzer Engineering Laboratories | Fault type selection system for identifying faults in an electric power system |
US6507184B1 (en) | 2001-03-28 | 2003-01-14 | Abb Automation Inc. | Methods and apparatus for differential current measurement in a three-phase power system |
JP2005533474A (ja) * | 2002-07-12 | 2005-11-04 | マックグロウ−エディソン カンパニー | 電気回路網保護システム |
KR100798338B1 (ko) | 2006-06-07 | 2008-01-28 | 엘에스산전 주식회사 | 3극형 기중 차단기의 지락 전류 계측 회로 |
US8791704B2 (en) | 2011-10-11 | 2014-07-29 | Schweitzer Engineering Laboratories Inc. | Fault-type identification for electric power delivery systems |
CN103066576B (zh) * | 2012-12-26 | 2015-02-25 | 北京四方继保自动化股份有限公司 | 一种谐波综合信息防止饱和误动的线路差动保护方法 |
CN108028529B (zh) * | 2015-09-18 | 2019-12-20 | 施瓦哲工程实验有限公司 | 电力输送***的时域线路保护 |
EP3157112A1 (en) * | 2015-10-12 | 2017-04-19 | General Electric Technology GmbH | Improvements in or relating to the protection of power transformers |
CN105552837B (zh) * | 2016-01-20 | 2017-12-29 | 华北电力大学 | 一种计及直流偏磁影响的分区反时限变压器差动保护方法 |
CN106786484B (zh) * | 2016-12-30 | 2023-09-15 | 南方电网科学研究院有限责任公司 | 一种二次谐波电流的抑制方法及装置 |
US10859639B2 (en) | 2018-10-02 | 2020-12-08 | Schweitzer Engineering Laboratories, Inc. | Fault-type identification in an electric power delivery system using composite signals |
US11592498B2 (en) | 2020-10-02 | 2023-02-28 | Schweitzer Engineering Laboratories, Inc. | Multi-phase fault identification in capacitor banks |
US11808824B2 (en) | 2021-03-17 | 2023-11-07 | Schweitzer Engineering Laboratories, Inc. | Systems and methods to identify open phases of a capacitor bank |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50135548A (pt) * | 1974-04-17 | 1975-10-27 | ||
US3983455A (en) * | 1975-01-15 | 1976-09-28 | Westinghouse Electric Corporation | Direct transfer-trip relaying system |
US4091433A (en) * | 1977-02-10 | 1978-05-23 | General Electric Company | Protective relay circuit for interphase faults |
US4204237A (en) * | 1978-11-30 | 1980-05-20 | Gould Inc. | Solid state transformer differential relay |
US4402028A (en) * | 1981-08-17 | 1983-08-30 | Electric Power Research Institute, Inc. | Protective relay methods and apparatus |
AU560683B2 (en) * | 1982-06-23 | 1987-04-16 | Mitsubishi Denki Kabushiki Kaisha | Protective relay with second harmonic suppression |
JPS596715A (ja) * | 1982-07-01 | 1984-01-13 | 三菱電機株式会社 | 差動保護継電装置 |
JPS5921220A (ja) * | 1982-07-24 | 1984-02-03 | 三菱電機株式会社 | 過電圧保護継電装置 |
-
1985
- 1985-12-10 US US06/807,136 patent/US4704653A/en not_active Expired - Lifetime
-
1986
- 1986-11-18 ZA ZA868753A patent/ZA868753B/xx unknown
- 1986-11-27 CA CA000523974A patent/CA1267718A/en not_active Expired - Lifetime
- 1986-12-08 BR BR8606027A patent/BR8606027A/pt not_active IP Right Cessation
- 1986-12-08 MX MX4562A patent/MX161503A/es unknown
- 1986-12-09 CN CN86108204A patent/CN1007309B/zh not_active Expired
- 1986-12-10 KR KR1019860010537A patent/KR940002918B1/ko not_active IP Right Cessation
- 1986-12-10 JP JP61294586A patent/JPS62144535A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
CN1007309B (zh) | 1990-03-21 |
KR940002918B1 (ko) | 1994-04-07 |
CA1267718A (en) | 1990-04-10 |
US4704653A (en) | 1987-11-03 |
ZA868753B (en) | 1987-06-24 |
KR870006606A (ko) | 1987-07-13 |
CN86108204A (zh) | 1987-08-26 |
JPS62144535A (ja) | 1987-06-27 |
MX161503A (es) | 1990-10-18 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
B21A | Patent or certificate of addition expired [chapter 21.1 patent gazette] |
Free format text: PATENTE EXTINTA EM 08/12/2001 |