ES476633A1 - Protective relaying apparatus - Google Patents
Protective relaying apparatusInfo
- Publication number
- ES476633A1 ES476633A1 ES476633A ES476633A ES476633A1 ES 476633 A1 ES476633 A1 ES 476633A1 ES 476633 A ES476633 A ES 476633A ES 476633 A ES476633 A ES 476633A ES 476633 A1 ES476633 A1 ES 476633A1
- Authority
- ES
- Spain
- Prior art keywords
- remote location
- zero sequence
- circuit breaker
- protective relaying
- ground
- Prior art date
- 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
- 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
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/30—Staggered disconnection
-
- 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
- H02H3/40—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 ratio of voltage and current
- H02H3/402—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 ratio of voltage and current using homopolar quantities
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
A protective system for a polyphase distribution circuit comprises first and second ground relays 60, 60' located at a substation and a remote location respectively, each ground relay providing a time- delayed trip signal to an associated circuit breaker 52, 52' in dependence on the ratio of the zero sequence current Io to some function of the phase currents, and a zero sequence directional relay 67 at the remote location for adjusting the trip delay time of the second circuit breaker according to the flow direction of a zero sequence quantity at the remote location.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US86878978A | 1978-01-12 | 1978-01-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
ES476633A1 true ES476633A1 (en) | 1979-12-01 |
Family
ID=25352322
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES476633A Expired ES476633A1 (en) | 1978-01-12 | 1979-01-08 | Protective relaying apparatus |
Country Status (10)
Country | Link |
---|---|
JP (1) | JPS5497748A (en) |
BR (1) | BR7900098A (en) |
DE (1) | DE2900654A1 (en) |
ES (1) | ES476633A1 (en) |
FR (1) | FR2414810A1 (en) |
GB (1) | GB2012505B (en) |
IT (1) | IT1110058B (en) |
MX (1) | MX145530A (en) |
SE (1) | SE436237B (en) |
ZA (1) | ZA79137B (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63179736U (en) * | 1987-05-14 | 1988-11-21 | ||
SE459059B (en) * | 1987-09-16 | 1989-05-29 | Asea Ab | PROTECT FOR HIGH-RESISTANT EARTH ERRORS |
DE4439499C2 (en) * | 1994-10-27 | 1998-01-29 | Siemens Ag | Method for detecting an earth short on an electrical power transmission line |
US6453248B1 (en) * | 1998-07-21 | 2002-09-17 | Abb Inc. | High impedance fault detection |
AU755700B2 (en) * | 1999-11-29 | 2002-12-19 | Canon Kabushiki Kaisha | Power generation system, and method for installing the same |
ES2323994B1 (en) * | 2006-10-25 | 2010-05-13 | Universidad Del Pais Vasco-Euskal Herriko Unibertsitatea | ELECTRICAL LINE PROTECTION SYSTEM TO DETERMINE THE SENSE IN WHICH A FAILURE IS PRODUCED. |
FI126892B (en) | 2016-05-23 | 2017-07-31 | Emtele Oy | Felströmindikator |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3539866A (en) * | 1967-10-11 | 1970-11-10 | Federal Pacific Electric Co | Multi-zone fault protection systems |
-
1979
- 1979-01-08 ES ES476633A patent/ES476633A1/en not_active Expired
- 1979-01-09 BR BR7900098A patent/BR7900098A/en unknown
- 1979-01-10 GB GB79866A patent/GB2012505B/en not_active Expired
- 1979-01-10 MX MX176245A patent/MX145530A/en unknown
- 1979-01-10 DE DE19792900654 patent/DE2900654A1/en not_active Withdrawn
- 1979-01-11 JP JP106879A patent/JPS5497748A/en active Pending
- 1979-01-11 SE SE7900254A patent/SE436237B/en unknown
- 1979-01-12 FR FR7900814A patent/FR2414810A1/en active Pending
- 1979-01-12 ZA ZA00790137A patent/ZA79137B/en unknown
- 1979-01-12 IT IT19231/79A patent/IT1110058B/en active
Also Published As
Publication number | Publication date |
---|---|
GB2012505A (en) | 1979-07-25 |
BR7900098A (en) | 1979-08-07 |
IT7919231A0 (en) | 1979-01-12 |
ZA79137B (en) | 1979-12-27 |
SE7900254L (en) | 1979-09-14 |
SE436237B (en) | 1984-11-19 |
FR2414810A1 (en) | 1979-08-10 |
JPS5497748A (en) | 1979-08-02 |
IT1110058B (en) | 1985-12-23 |
MX145530A (en) | 1982-03-02 |
GB2012505B (en) | 1982-04-28 |
DE2900654A1 (en) | 1979-07-19 |
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