GB944858A - Improvements relating to high power direct current circuits - Google Patents
Improvements relating to high power direct current circuitsInfo
- Publication number
- GB944858A GB944858A GB2512361A GB2512361A GB944858A GB 944858 A GB944858 A GB 944858A GB 2512361 A GB2512361 A GB 2512361A GB 2512361 A GB2512361 A GB 2512361A GB 944858 A GB944858 A GB 944858A
- Authority
- GB
- United Kingdom
- Prior art keywords
- winding
- core
- direct current
- switch
- saturation
- 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
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
- H02H9/021—Current limitation using saturable reactors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/59—Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the ac cycle
- H01H33/596—Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the ac cycle for interrupting dc
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Regulation Of General Use Transformers (AREA)
Abstract
944,858. Switching systems including static transformers. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. June 19, 1962 [July 11, 1961], No. 25123/61. Heading H2H. A circuit arrangement for supplying a load L from a high power, high voltage direct current source V1 over a circuit breaker C includes an electromagnetic device T, the winding N1 of which is connected between the source V1 and the circuit breaker C so as to carry the load current which drives the core P of the device into saturation in one direction and the winding N2 of the device being connected to an auxiliary low voltage direct current source V2 over a switch S such that the current flowing in the winding N2 when the switch S is closed in normal operation is such that the core P is driven in saturation in the opposite direction to that of the winding N1. Thus opening of switch S causes the core P to move from one saturation state to the other so inducing an e.m.f. opposite to the applied voltage V1 during which time the circuitbreaker C can be opened under reduced current conditions. The core P is made of material with a rectangular hysteresis loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2512361A GB944858A (en) | 1961-07-11 | 1961-07-11 | Improvements relating to high power direct current circuits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2512361A GB944858A (en) | 1961-07-11 | 1961-07-11 | Improvements relating to high power direct current circuits |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB944858A true GB944858A (en) | 1963-12-18 |
Family
ID=10222582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2512361A Expired GB944858A (en) | 1961-07-11 | 1961-07-11 | Improvements relating to high power direct current circuits |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB944858A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2495745A1 (en) * | 2011-03-04 | 2012-09-05 | ABB Technology AG | Current-rise limitation in high-voltage DC systems |
-
1961
- 1961-07-11 GB GB2512361A patent/GB944858A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2495745A1 (en) * | 2011-03-04 | 2012-09-05 | ABB Technology AG | Current-rise limitation in high-voltage DC systems |
| WO2012119919A1 (en) * | 2011-03-04 | 2012-09-13 | Abb Technology Ag | Current-rise limitation in high-voltage dc systems |
| CN103403830A (en) * | 2011-03-04 | 2013-11-20 | Abb技术有限公司 | Current-rise limitation in high-voltage DC systems |
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