FR2377108B1 - - Google Patents
Info
- Publication number
- FR2377108B1 FR2377108B1 FR7739349A FR7739349A FR2377108B1 FR 2377108 B1 FR2377108 B1 FR 2377108B1 FR 7739349 A FR7739349 A FR 7739349A FR 7739349 A FR7739349 A FR 7739349A FR 2377108 B1 FR2377108 B1 FR 2377108B1
- Authority
- FR
- France
- 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
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/46—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to frequency deviations
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/18—Indicating phase sequence; Indicating synchronism
-
- 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
- H02H7/06—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 dynamo-electric generators; for synchronous capacitors
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/757,177 US4125884A (en) | 1977-01-06 | 1977-01-06 | Apparatus for detecting subsynchronous current in power systems |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2377108A1 FR2377108A1 (fr) | 1978-08-04 |
| FR2377108B1 true FR2377108B1 (US07534539-20090519-C00452.png) | 1981-11-27 |
Family
ID=25046714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7739349A Granted FR2377108A1 (fr) | 1977-01-06 | 1977-12-27 | Detecteur de courant sous-synchrone dans un reseau electrique |
Country Status (14)
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4218718A (en) * | 1978-11-08 | 1980-08-19 | Westinghouse Electric Corp. | Protective relay apparatus |
| US4208687A (en) * | 1978-11-08 | 1980-06-17 | Westinghouse Electric Corp. | Protective relay apparatus |
| US4331882A (en) * | 1980-03-17 | 1982-05-25 | Electric Power Research Institute, Inc. | Method and means for detecting spurious electrical signals in an electrical power system |
| US4454428A (en) * | 1981-07-22 | 1984-06-12 | Westinghouse Electric Corp. | Noise reduction means for a dynamic stabilizer for synchronous machines having torsional oscillations and method |
| US4451777A (en) * | 1981-09-10 | 1984-05-29 | Westinghouse Electric Corp. | Static VAR generation for transmission line compensation |
| AU557496B2 (en) * | 1981-09-10 | 1986-12-24 | Westinghouse Electric Corporation | Static var generator |
| US4470091A (en) * | 1982-10-20 | 1984-09-04 | Westinghouse Electric Corp. | Productive relay apparatus for protection from sub-synchronous current oscillations in a power system |
| US4607217A (en) * | 1983-09-28 | 1986-08-19 | Southern California Edison Company, Inc. | Subsynchronous resonance detection |
| US4855664A (en) * | 1988-06-10 | 1989-08-08 | General Electric Company | Method and apparatus for damping oscillations of an ac generator |
| US6774614B2 (en) | 2002-02-27 | 2004-08-10 | General Electric Company | Method and apparatus for detecting current |
| EP2357483B1 (en) * | 2010-02-17 | 2013-06-26 | ABB Research Ltd. | A method of subsynchronous resonance detection |
| CN102508027B (zh) * | 2011-09-20 | 2014-05-28 | 南京南瑞继保电气有限公司 | 一种次同步模态信号的筛选分离监测方法 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3654516A (en) * | 1971-04-07 | 1972-04-04 | Westinghouse Electric Corp | Change of current or voltage acutated protecting relay |
| US3886449A (en) * | 1974-03-06 | 1975-05-27 | Gen Electric | Power measurement circuit |
| US3944846A (en) * | 1974-03-19 | 1976-03-16 | Southern California Edison Company | Subsynchronous relay |
| US3999115A (en) * | 1974-05-02 | 1976-12-21 | Westinghouse Electric Corporation | Dynamic stabilizer for synchronous machines having torsional oscillations and method |
| US4001695A (en) * | 1975-03-24 | 1977-01-04 | Systron Donner Corporation | Automatic deviation analysis meter |
-
1977
- 1977-01-06 US US05/757,177 patent/US4125884A/en not_active Expired - Lifetime
- 1977-12-20 IN IN1758/CAL/77A patent/IN149274B/en unknown
- 1977-12-27 FR FR7739349A patent/FR2377108A1/fr active Granted
- 1977-12-30 SE SE7714957A patent/SE438579B/sv not_active IP Right Cessation
-
1978
- 1978-01-02 DE DE19782800067 patent/DE2800067A1/de not_active Withdrawn
- 1978-01-03 BR BR7800018A patent/BR7800018A/pt unknown
- 1978-01-03 AU AU32137/78A patent/AU515422B2/en not_active Expired
- 1978-01-04 IT IT4150378A patent/IT1104439B/it active
- 1978-01-05 GB GB323/78A patent/GB1599131A/en not_active Expired
- 1978-01-05 AR AR27064278A patent/AR213989A1/es active
- 1978-01-05 YU YU1278A patent/YU40502B/xx unknown
- 1978-01-05 ES ES465823A patent/ES465823A1/es not_active Expired
- 1978-01-06 JP JP30878A patent/JPS5385352A/ja active Granted
- 1978-01-06 MX MX171960A patent/MX144248A/es unknown
Also Published As
| Publication number | Publication date |
|---|---|
| AR213989A1 (es) | 1979-04-11 |
| AU3213778A (en) | 1979-07-12 |
| BR7800018A (pt) | 1978-12-05 |
| US4125884A (en) | 1978-11-14 |
| YU1278A (en) | 1982-08-31 |
| DE2800067A1 (de) | 1978-07-20 |
| MX144248A (es) | 1981-09-17 |
| FR2377108A1 (fr) | 1978-08-04 |
| YU40502B (en) | 1986-02-28 |
| SE438579B (sv) | 1985-04-22 |
| JPS5385352A (en) | 1978-07-27 |
| SE7714957L (sv) | 1978-07-07 |
| AU515422B2 (en) | 1981-04-02 |
| IT7841503A0 (it) | 1978-01-04 |
| ES465823A1 (es) | 1979-01-01 |
| IN149274B (US07534539-20090519-C00452.png) | 1981-10-17 |
| JPS5627057B2 (US07534539-20090519-C00452.png) | 1981-06-23 |
| GB1599131A (en) | 1981-09-30 |
| IT1104439B (it) | 1985-10-21 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse | ||
| AR | Application made for restoration | ||
| DI | Inadmissibility of an action of restoration |