GB738453A - Improvements in and relating to phase balancing systems - Google Patents
Improvements in and relating to phase balancing systemsInfo
- Publication number
- GB738453A GB738453A GB25636/53A GB2563653A GB738453A GB 738453 A GB738453 A GB 738453A GB 25636/53 A GB25636/53 A GB 25636/53A GB 2563653 A GB2563653 A GB 2563653A GB 738453 A GB738453 A GB 738453A
- Authority
- GB
- United Kingdom
- Prior art keywords
- phase
- capacitor
- rectifiers
- reactor
- current
- 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
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/26—Arrangements for eliminating or reducing asymmetry in polyphase networks
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Electrical Variables (AREA)
Abstract
738,453. Phase-changing. GENERAL ELECTRIC CO. Sept. 16,1953 [Sept. 17, 1952], No. 25636/53. Class 38 (2). In a 3-phase to single-phase converting system in which the 3-phase supply is balanced by connection of a capacitor and an inductor respectively across the remaining phases, the values of these reactances are automatically controlled in accordance with the current and/or voltage in the loaded phase. The load is connected across phases 2 and 3, and a saturable reactor R across phases 1 and 2. The reactor has a constant bias winding 12 opposing a control winding 11 which is connected across one diagonal of a full-wave connected bridge of grid-controlled vapour-filled rectifiers 5, 6, 7, 8. The rectifiers are controlled in accordance with the magnitude of the current in the single-phase supply line, measured by transformer 15, plus the voltage of the loaded phase measured by transformer 17. An increase in line current, or a drop in phase voltage due to increased loading, reduces the output of the rectifiers 5 ... 8 and the bias winding 12 causes the effective saturation to increase so that the reactor R increases its lagging current. The capacitor C is effectively shunted by reactors 9, 10 and the rectifiers 5 ... 8, so that reduced current through the rectifiers increases the leading current due to the capacitor. In a modification, Fig. 2 (not shown), separate sets of rectifiers control the saturable reactor and the capacitor. In a second embodiment, Fig. 3 (not shown), the reactor and capacitor are connected to the three-phase system by a step-down transformer, and the load (an electric train) by a Scott-connected transformer. The load may be supplied from either of two phases of the supply and a relay automatically changes over the positions of the balancing reactor and capacitor.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US738453XA | 1952-09-17 | 1952-09-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB738453A true GB738453A (en) | 1955-10-12 |
Family
ID=22116142
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB25636/53A Expired GB738453A (en) | 1952-09-17 | 1953-09-16 | Improvements in and relating to phase balancing systems |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB738453A (en) |
-
1953
- 1953-09-16 GB GB25636/53A patent/GB738453A/en not_active Expired
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