DE946641C - Arrangement for parallel operation of self-regulating synchronous generators - Google Patents
Arrangement for parallel operation of self-regulating synchronous generatorsInfo
- Publication number
- DE946641C DE946641C DES39129A DES0039129A DE946641C DE 946641 C DE946641 C DE 946641C DE S39129 A DES39129 A DE S39129A DE S0039129 A DES0039129 A DE S0039129A DE 946641 C DE946641 C DE 946641C
- Authority
- DE
- Germany
- Prior art keywords
- excitation
- current
- synchronous generators
- self
- arrangement
- 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
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/14—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field
- H02P9/38—Self-excitation by current derived from rectification of both output voltage and output current of generator
-
- 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
-
- 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
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
-
- 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
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
- H02J3/50—Controlling the sharing of the out-of-phase component
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Eletrric Generators (AREA)
Description
Bei selbstregelndem. Synchrongeneratoren in Stromschaltung, bei der also die Erregung des Generators einerseits über eine den Strom vorschreibende Drosselspule von der Netzspannung bestimmt ist, andererseits in. Stromüberlagerung von dem Belästungsstrom. des Generators, bereitet der Parallelbetrieb mehrerer Maschinen Schwiewi-igkeiten, weil die Blindbelastung der Maschinen sich leicht ungleichmäßig auf die einzelnen Maschinen verteilt. Um diesen Nachteil zu vermeiden, hat man vorgeschlagen, daß bei Parali-elbetrieb dies Generatoren nicht nur mit ihren Netzklemmen, sondexn auch mit ihren Erregerleitungen miteinander verbunden sind. Da dann die Erregerwicklungen der beiden Maschinen parallel arbeiten, wirkt der erhöhte Erregerstrom, der durch die stromabhängige Erregung entstanden sein kann, nicht nur auf eine,. sondern. auch auf die andere Maschine, wodurch diese sich zwangläufig an der Blindleistungslieferung beteiligt. Eine derartige Parallelschaltung der Gleichstromerregerleitungen ist jedoch manchmal nicht möglich, nämlich dann, wenn die Erregerspannungen nicht gleich sind.With self-regulating. Synchronous generators in current circuit, in which so the excitation of the generator on the one hand via a choke coil that dictates the current is determined by the mains voltage, on the other hand in. Current superposition of the nuisance current. of the generator, the parallel operation of several machines creates difficulties, because the blind load of the machines is slightly unevenly on the individual Machines distributed. In order to avoid this disadvantage, it has been proposed that in parallel operation, the generators not only with their mains terminals, but also with them are connected to one another with their excitation lines. Then there are the excitation windings of the two machines work in parallel, the increased excitation current that comes through the current-dependent excitation may have arisen, not just on one. but. also to the other machine, which inevitably affects the reactive power delivery involved. Such a parallel connection of the DC exciter lines is but sometimes not possible, namely when the excitation voltages are not the same are.
Gemäß der Erfindung kann ein einwandfreier Parallelbetrieb von selbstregelnden Synchrongeneratoren in, der geschilderten, stromabhängigen Schaltung auch dadurch erzielt werden, daß an den Erregeranordnungen der parallel arbeitenden Synchrongeneratoren Wechselstrom führende Punkte gleichen, von der Netzspannung abweichenden Potentials miteinander verbunden sind. .According to the invention, proper parallel operation of self-regulating Synchronous generators in the described, current-dependent circuit also as a result be achieved that on the excitation arrangements of the synchronous generators working in parallel Points carrying alternating current are the same as potential deviating from the mains voltage are connected to each other. .
Die Zeichnung veranschaulicht ein Ausführurigs beispiel der neuen Schaltung. Die beiden parallel arbeitenden Synchrongeneratoren i" und ib werden von Dampfturbinen 6 'angetrieben. Sie besitzen selbstregelnde stromabhängige Erregung, zu welchem Zweck die Stromtransformatoren 3a und 3b vorgesehen sind, denen auf der Primärseite einerseits über die Drosselspulen 4" und 4b eine der Netzspannung verhältnisgleiche bzw: gleichbleibende Erregerkomponente zugeführt wird, andererseits infolge Reihenschaltung eines Teiles der Priimärwicklung mit der Stämderwicldung des Generators eine dem Belastungsstrom des Synchrongenerators verhältnisgleiche Erregerkomponente. Die Sekundärwicklungen der beiden Transformatoren speisen. über die Gleichrichter 2" und 2b, die Erregerwicklungen der Generatoren mit den genannten. Erregerkomponenten. in Stromüberlagerung. Durch die Verbindungsleitung 7 sind nun erfindungsgemäß die Drosselspulen 4a und 4b an. der denn Netzanschluß abgewandten Seite miteinander verbunden. Bei gleichartig bemessenen Maschinen beträgt die Spannung an dieser Stelle etwa 2o°/o der Netzspannung, so. da,B auch bei ungleichen Gleichstromerregerspannungen ein Parallelschalten möglich ist. Die Wirkung dieser Parallelschaltung durch die Leitung 7 ist dieselbe wie die Parallelschaltung der Gleichs,tromeTregerleitungen, also auf der Gleichstromseite der Gleichrichter 2" und 2b, da eine durch die stromabhängige Erregung herbeigeführte Ungleichmäßigkeit der Erregung auch eine Verschiebung des Potentials am Anfang und am Ende der Ausgleichleitung 7 zur Folge hat, "deren Spannungsdifferenz über die Drosselspulen einem Ausgleächstrom hervorruft, - der wiederum über die Transformatoren 3" und 3b auch auf den Erregerstrom an. den Synchrongeneratoren ausgleichend einwirkt.The drawing illustrates an exemplary embodiment of the new circuit. The two synchronous generators i "and ib working in parallel are driven by steam turbines 6 '. They have self-regulating current-dependent excitation, for which purpose the current transformers 3a and 3b are provided : constant excitation component is supplied, on the other hand, due to the series connection of a part of the primary winding with the main winding of the generator, an excitation component that is proportional to the load current of the synchronous generator. Feed the secondary windings of the two transformers. Via the rectifiers 2 ″ and 2b, the excitation windings of the generators with the aforementioned excitation components in superimposition. By means of the connecting line 7, the choke coils 4a and 4b are now connected to one another on the side facing away from the mains connection At this point about 20% of the mains voltage, so that B parallel switching is possible even if the DC exciter voltages are unequal "and 2b, since a non-uniformity of the excitation brought about by the current-dependent excitation also results in a shift in the potential at the beginning and at the end of the equalizing line 7," whose voltage difference across the choke coils causes a compensating current - which in turn through the transformers 3 " and 3b also on the Excitation current on. has a compensating effect on the synchronous generators.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES39129A DE946641C (en) | 1954-05-14 | 1954-05-14 | Arrangement for parallel operation of self-regulating synchronous generators |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES39129A DE946641C (en) | 1954-05-14 | 1954-05-14 | Arrangement for parallel operation of self-regulating synchronous generators |
Publications (1)
Publication Number | Publication Date |
---|---|
DE946641C true DE946641C (en) | 1956-08-02 |
Family
ID=7483172
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DES39129A Expired DE946641C (en) | 1954-05-14 | 1954-05-14 | Arrangement for parallel operation of self-regulating synchronous generators |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE946641C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1051377B (en) * | 1956-10-31 | 1959-02-26 | Siemens Ag | Arrangement for load-dependent excitation of synchronous machines working in parallel on a common network |
-
1954
- 1954-05-14 DE DES39129A patent/DE946641C/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1051377B (en) * | 1956-10-31 | 1959-02-26 | Siemens Ag | Arrangement for load-dependent excitation of synchronous machines working in parallel on a common network |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE946641C (en) | Arrangement for parallel operation of self-regulating synchronous generators | |
DE683963C (en) | Group compounding for two or more converters connected to the same AC network | |
DE720061C (en) | Arrangement for voltage regulation of synchronous machines with the help of a rectifier | |
DE640956C (en) | Switching arrangement for voltage equalization in three-wire systems using a rectifier | |
DES0039129MA (en) | ||
DE1463673A1 (en) | Circuit arrangement for equal load control | |
DE413823C (en) | Circuit for suppressing the lamellar harmonics in commutating electrical machines | |
DE746583C (en) | Arrangement for speed control of electrical machines | |
DE675137C (en) | Arrangement for distributing the power required by the individual consumers of a constant current system to the individual constant current generators | |
DE515477C (en) | Arrangement for the generation of several control voltages in a closed electrical circuit, which are dependent on one another according to a power function and are composed at any phase angle and which are each generated in a special transformer | |
DE522964C (en) | Single-phase and multi-phase rotary transformer in which both the stator and the runner are excited | |
DE722210C (en) | Arrangement for the production of a staggering of the parallel-connected brushes or groups of brushes of alternating current series machines with intermediate transformer | |
DE496176C (en) | Arrangement for the elimination of the inductive voltage drop in the excitation winding of commutator rear-end machines which are switched on in the secondary circuit of asynchronous machines and which are excited with slip frequency in the stand | |
DE544593C (en) | Process for generating a DC voltage that is as harmonic-free as possible by means of a vacuum rectifier fed by multi-phase transformers | |
DE533144C (en) | Arrangement to reduce the influence of the inductive voltage drop in alternating current circuits with variable frequency | |
DE489746C (en) | Arrangement for introducing a slip-independent voltage in slip frequency leading electrical circuits of asynchronous machines with commutator rear machine | |
DE963000C (en) | Compensated synchronous machine for single-phase current | |
DE693097C (en) | Multi-phase shunt commutator motor with stator excitation winding | |
DE369718C (en) | Device for comparing the current in working circuits through which pulsating direct current flows | |
DE520085C (en) | Arrangement on asynchronous machines, the commutator rear machine of which is excited by the mains voltage directly or via voltage or frequency converters according to patent 507547 | |
DE619202C (en) | Arrangement on asynchronous machines, the commutator rear machine of which is excited from the network via a frequency converter | |
DE472204C (en) | Cascade, consisting of an asynchronous main motor working in the subsynchronous area with constant power consumption and independently of the slipping, a commutator rear machine and a commutator auxiliary machine exciting the latter | |
DE925182C (en) | Electric amplifier machine for direct current | |
DE595470C (en) | Transformer for converting three-phase current into multi-phase current for rectifier | |
DE628376C (en) | Arrangement for voltage regulation of AC machines |