GB522738A - Improvements in and relating to systems of electrical distribution - Google Patents
Improvements in and relating to systems of electrical distributionInfo
- Publication number
- GB522738A GB522738A GB36463/38A GB3646338A GB522738A GB 522738 A GB522738 A GB 522738A GB 36463/38 A GB36463/38 A GB 36463/38A GB 3646338 A GB3646338 A GB 3646338A GB 522738 A GB522738 A GB 522738A
- Authority
- GB
- United Kingdom
- Prior art keywords
- windings
- winding
- different
- generators
- transformer
- 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
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Of Transformers For General Uses (AREA)
Abstract
522,738. Electricity supply; transformers. BRITISH THOMSON-HOUSTON CO., Ltd. Dec. 14" 1938, No. 36463. Convention date, Dec. 14, 1937. [Classes 38 (ii) and 38 (iv)] Distribution network arrangements; transformer arrangements.-In a system of electrical distribution the secondary of a transformer is connected to a load circuit and a plurality of primary windings of the transformer are each connected to a different voltage source, the winding arrangement being such that equal ampereturns are supplied by each of the primary windings to the load. The different voltage sources may be generators or the different windings of double or multiple winding generators and in either case they may be connected to the different sections of a busbar system sectionalized by reactances so that the system ensures balance of the currents supplied from the different sources. In Fig. 1 four sections 11, 12, 13, 14 of a busbar system 10 of the ring type (shown single-line) are separated by sectionalizing reactors 15, 16, 17, 18 and fed by generators 19, 20, 2'1, 22, respectively. Sectionalizing switches are referred to. Feeders 2'3, 24 are fed respectively from the high-voltage secondaries 26, 30 of balancing transformers 25, 29 which are similar, each having two primary windings connected -to different sections of the busbar system. In the balancing transformer winding diagram, Fig. 2, 38 and 39 are the primary windings on different legs while the secondary winding 40 comprises two windings, one on each leg, in series. With equal numbers of turns in each of these secondary winding sections, equal amp.- turns are supplied from each of the primary windings. Separate magnetic return paths 36 and 37 are provided for each of the winding legs. In an alternative core structure Fig. 4 (not shown) additional magnetic return paths are provided. In an alternative winding arrangement Fig. 3 (not shown) the windings are carried on the outer legs of a three-legged core, the central leg of which forms a common magnetic return path. With these arrangements, in the event of a short-circuit on one of the primary supply circuits, the current fed to it from the other is limited by the high reactance introduced by the loose magnetic coupling between windings on different legs. In Fig. 5 (not shown) doublewinding generators each have one of their windings connected to one busbar system and the other winding to a different busbar system. The two busbar systems are interconnected by reactors and each feeder is coupled to both systems through a balancing transformer of the type described above. In Fig. 6 (not shown) double - winding generators feed a ring - type busbar system like that 'in Fig. 1, and full three-phase connections are given. There are two sectionalizing reactors between the separate windings of a given generator and at least one between windings of different generators. Three single-phase balancing transformers are employed but in Figs. 7 and 8 (not shown) winding diagrams for three-phase transformers are shown. Specifications 311,344, [Class 38 (iv)], and 366,184 are referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US522738XA | 1937-12-14 | 1937-12-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB522738A true GB522738A (en) | 1940-06-26 |
Family
ID=21976520
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB36463/38A Expired GB522738A (en) | 1937-12-14 | 1938-12-14 | Improvements in and relating to systems of electrical distribution |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB522738A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105958473A (en) * | 2016-04-25 | 2016-09-21 | 中国电力科学研究院 | Method of determining power grid saturation load level based on short circuit current constraint |
CN112421679A (en) * | 2020-11-24 | 2021-02-26 | 国网天津市电力公司 | Electrical wiring structure based on hybrid micro-grid and energy flowing method thereof |
CN114336617A (en) * | 2022-01-12 | 2022-04-12 | 中国核电工程有限公司 | Power supply system of nuclear energy heat supply plant |
-
1938
- 1938-12-14 GB GB36463/38A patent/GB522738A/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105958473A (en) * | 2016-04-25 | 2016-09-21 | 中国电力科学研究院 | Method of determining power grid saturation load level based on short circuit current constraint |
CN112421679A (en) * | 2020-11-24 | 2021-02-26 | 国网天津市电力公司 | Electrical wiring structure based on hybrid micro-grid and energy flowing method thereof |
CN112421679B (en) * | 2020-11-24 | 2023-07-25 | 国网天津市电力公司 | Electrical wiring structure based on hybrid micro-grid and energy flow method thereof |
CN114336617A (en) * | 2022-01-12 | 2022-04-12 | 中国核电工程有限公司 | Power supply system of nuclear energy heat supply plant |
CN114336617B (en) * | 2022-01-12 | 2024-02-02 | 中国核电工程有限公司 | Power supply system of nuclear energy heat supply plant |
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