GB894563A - Improvements relating to rectifier/inverter equipment - Google Patents
Improvements relating to rectifier/inverter equipmentInfo
- Publication number
- GB894563A GB894563A GB2619659A GB2619659A GB894563A GB 894563 A GB894563 A GB 894563A GB 2619659 A GB2619659 A GB 2619659A GB 2619659 A GB2619659 A GB 2619659A GB 894563 A GB894563 A GB 894563A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valves
- equipment
- pair
- control conductors
- windings
- 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
- H02H7/10—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 converters; for rectifiers
- H02H7/12—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 converters; for rectifiers for static converters or rectifiers
- H02H7/1209—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 converters; for rectifiers for static converters or rectifiers for converters using only discharge tubes
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Ac-Ac Conversion (AREA)
- Protection Of Transformers (AREA)
Abstract
894,563. Protective cut-out arrangements. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Aug. 24, 1960 [July 30, 1959], No. 26196/59. Class 38 (o). [Also in Group XXXV] In a rectifier/inverter equipment having polyphase voltage transforming means T1, T2 in combination with a plurality of grid-controlled gaseous-conductor valves V1 . . . V10, means are provided for deriving an electrical quantity which varies in dependence upon the algebraic difference between currents flowing simultaneously in at least two anode - cathode paths of the equipment, switching means responding when the quantity reaches a value signifying a " breakthrough " fault in one of the paths when the equipment is inverting. The switching means may also respond when the quantity reaches a value signifying a " backfire " fault in one of the paths when the equipment is rectifying. In Fig. 1 the six output phases of each of the transformers T1, T2 are applied to the anodes of five six-anode mercury-arc valves V1 . . . V5 and V6 . . . V10, respectively, the valves being arranged in pairs, one from each group of five. The cathode connections of the two valves in each pair provide differentially arranged D.C. control conductors CC of a saturable core reactance device RD having A.C. windings AC1, AC2 supplied from a transformer T3 in series with a bridge rectifier RF connected to the trip coil TC of circuitbreaker XB. Under normal conditions the currents in each pair of control conductors CC are of the same magnitude so that the core of each device RD is not saturated and the associated A.C. windings AC1, AC2 have a high impedance preventing the energization of the trip coil TC. In the event of a fault in either valve of a pair of valves, the currents in the associated control conductors CC will differ, causing the core of the device RD to be magnetized so reducing the impedance of the A.C. windings AC1, AC2 and causing the tripping of the circuit-breaker XB to cut-out the affected pair of valves. Fig. 2 (not shown) illustrates an arrangement for a small number of valves in which only the faulty valve is disconnected. In this case the control conductors CC are located in the anode connections of the valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2619659A GB894563A (en) | 1959-07-30 | 1959-07-30 | Improvements relating to rectifier/inverter equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2619659A GB894563A (en) | 1959-07-30 | 1959-07-30 | Improvements relating to rectifier/inverter equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB894563A true GB894563A (en) | 1962-04-26 |
Family
ID=10239858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2619659A Expired GB894563A (en) | 1959-07-30 | 1959-07-30 | Improvements relating to rectifier/inverter equipment |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB894563A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3321695A (en) * | 1963-07-10 | 1967-05-23 | Alsthom Cgee | Rectifier inverter circuits with controlled rectifiers and saturable inductance means |
-
1959
- 1959-07-30 GB GB2619659A patent/GB894563A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3321695A (en) * | 1963-07-10 | 1967-05-23 | Alsthom Cgee | Rectifier inverter circuits with controlled rectifiers and saturable inductance means |
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