CN201797319U - Dynamic reactive power compensation device of large motor with voltage adjusting soft start function - Google Patents
Dynamic reactive power compensation device of large motor with voltage adjusting soft start function Download PDFInfo
- Publication number
- CN201797319U CN201797319U CN2010205004612U CN201020500461U CN201797319U CN 201797319 U CN201797319 U CN 201797319U CN 2010205004612 U CN2010205004612 U CN 2010205004612U CN 201020500461 U CN201020500461 U CN 201020500461U CN 201797319 U CN201797319 U CN 201797319U
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- Prior art keywords
- secondary winding
- reactance transformer
- soft start
- winding
- compensation device
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- 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
- Y02E40/30—Reactive power compensation
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Abstract
The utility model relates to a power system, in particular to a dynamic reactive power compensation device of a large motor with voltage adjusting soft start function. The device comprises a single-phase or three-phase reactance transformer; and the reactance transformer consists of a primary winding, a secondary winding and a magnetic core, wherein the primary winding is connected to a high-voltage input loop of the power system. The device is characterized in that: two ends of the secondary winding are connected with series circuits consisting of capacitors and anti-parallel thyristors. The device has the advantages that: 1, the exciting current of the secondary winding of the reactance transformer can be continuously adjusted by controlling the phase shifting conduction angles of the anti-parallel thyristors; and 2, changeover switches are reduced, and impulse current produced during switching is prevented.
Description
Technical field
The utility model relates to electric power system, especially has the high capacity motor dynamic reactive compensation device of pressure regulation soft start function.
Background technology
The reactive power compensation of electric power system and alternating current motor method commonly used is to adopt the fixed capacity shunt compensation, and the shortcoming of this type of device is to compensate and be the fixed compensation value perception is idle.
Can only compensate and be the problem of fixed compensation value perception is idle for solving existing reactive power compensator, the someone adopts following technology: it mainly be made of single-phase or three-phase electricity reactance transformer; This reactance transformer is made up of winding, secondary winding and conducting magnet core three parts; Wherein, the secondary winding two ends are connected with switch and adjustable condenser.Can also be provided with tap in the middle of the winding, this tap links to each other with motor stator through switch; One time the winding input links to each other with motor stator through switch, and output is connected with switch.The shortcoming one of this scheme is to adopt a plurality of diverter switches, is easy to generate impulse current when switch switches, can not realize continuous adjusting; The 2nd, can't regulate adjustable condenser in actual applications.In sum, above scheme and infeasible.
Summary of the invention
Technical problem to be solved in the utility model is: the high capacity motor dynamic reactive compensation device with pressure regulation soft start function that a kind of dependable performance is provided.
High capacity motor dynamic reactive compensation device with pressure regulation soft start function, comprise single-phase or the three-phase electricity reactance transformer, described reactance transformer is made of winding, secondary winding and a conducting magnet core, wherein, one time winding is connected in electric power system high pressure input circuit, and its difference is: described secondary winding two ends are connected with the series circuit that is made of electric capacity and anti-parallel thyristor.
When being used for electric machine soft starting, the phase shift angle of flow by the control anti-parallel thyristor, thereby regulated the exciting current of reactance transformer secondary winding, because the primary circuit of reactance transformation is connected in the motor major loop, also just regulate the reactance of the primary circuit of reactance transformer, realized the pressure regulation soft start of motor.
When being used for reactive power compensation, the phase shift angle of flow by the control anti-parallel thyristor, thereby regulated the exciting current of reactance transformer secondary winding, because the primary circuit of reactance transformation is connected in parallel in the motor major loop, when the capacity current of reactance transformer secondary winding during greater than the inductance current of reactor, winding of reactance transformer just is capacitive load, thereby provides reactive current to the shunt circuit.
Be compared with the prior art, the beneficial effects of the utility model are: 1, pass through the phase shift angle of flow of control anti-parallel thyristor, thereby can regulate the exciting current of reactance transformer secondary winding continuously; 2, reduce diverter switch, prevented the impulse current that switch produces when switching.
Description of drawings
Fig. 1 is the structural representation that the utlity model has the high capacity motor dynamic reactive compensation device of pressure regulation soft start function.
Embodiment
Below in conjunction with accompanying drawing the utility model embodiment is further described.
Fig. 1 is the structural representation that the utlity model has the high capacity motor dynamic reactive compensation device of pressure regulation soft start function, and as shown in Figure 1, dynamic reactive compensation device comprises single-phase or the three-phase electricity reactance transformer, and described reactance transformer is by a winding X
1X
2, secondary winding X
3And the conducting magnet core formation, wherein, a winding X
1X
2Be connected in electric power system high pressure input circuit, described secondary winding X
3Two ends are connected with the series circuit that is made of electric capacity and anti-parallel thyristor.Electric capacity comprises first capacitor C
A, second capacitor C
B, the 3rd capacitor C
CThyristor comprises the first thyristor T
1, the second thyristor T
2, the 3rd thyristor T
3, the 4th thyristor T
4, the 5th thyristor T
5, the 6th thyristor T
6The first thyristor T
1With the second thyristor T
2, the 3rd thyristor T
3With the 4th thyristor T
4, the 5th thyristor T
5With the 6th thyristor T
6Constitute three pairs of anti-parallel thyristors respectively.
When being used for electric machine soft starting, the phase shift angle of flow by the control anti-parallel thyristor, thereby regulated the exciting current of reactance transformer secondary winding, because the primary circuit of reactance transformation is connected in the motor major loop, also just regulate the reactance of the primary circuit of reactance transformer, realized the pressure regulation soft start of motor.
When being used for reactive power compensation, the phase shift angle of flow by the control anti-parallel thyristor, thereby regulated the exciting current of reactance transformer secondary winding, because the primary circuit of reactance transformation is connected in parallel in the motor major loop, when the capacity current of reactance transformer secondary winding during greater than the inductance current of reactor, winding of reactance transformer just is capacitive load, thereby provides reactive current to the shunt circuit.
The above, it only is preferred embodiment of the present utility model, be not that utility model is done any pro forma restriction, every foundation technical spirit of the present utility model all still belongs in the scope of the present utility model any simple modification, equivalent variations and modification that above embodiment did.
Claims (1)
1. the high capacity motor dynamic reactive compensation device that has the pressure regulation soft start function, comprise single-phase or the three-phase electricity reactance transformer, described reactance transformer is made of winding, secondary winding and a conducting magnet core, wherein, one time winding is connected in electric power system high pressure input circuit, it is characterized in that: described secondary winding two ends are connected with the series circuit that is made of electric capacity and anti-parallel thyristor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205004612U CN201797319U (en) | 2010-08-20 | 2010-08-20 | Dynamic reactive power compensation device of large motor with voltage adjusting soft start function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205004612U CN201797319U (en) | 2010-08-20 | 2010-08-20 | Dynamic reactive power compensation device of large motor with voltage adjusting soft start function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201797319U true CN201797319U (en) | 2011-04-13 |
Family
ID=43852217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205004612U Expired - Fee Related CN201797319U (en) | 2010-08-20 | 2010-08-20 | Dynamic reactive power compensation device of large motor with voltage adjusting soft start function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201797319U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102983795A (en) * | 2012-10-12 | 2013-03-20 | 万洲电气股份有限公司 | TBEA compensation soft starting device used for large power cage type motor |
| CN105356482A (en) * | 2015-11-20 | 2016-02-24 | 国网山东青州市供电公司 | Low voltage line voltage adjusting device |
-
2010
- 2010-08-20 CN CN2010205004612U patent/CN201797319U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102983795A (en) * | 2012-10-12 | 2013-03-20 | 万洲电气股份有限公司 | TBEA compensation soft starting device used for large power cage type motor |
| CN102983795B (en) * | 2012-10-12 | 2015-06-10 | 万洲电气股份有限公司 | TBEA compensation soft starting device used for large power cage type motor |
| CN105356482A (en) * | 2015-11-20 | 2016-02-24 | 国网山东青州市供电公司 | Low voltage line voltage adjusting device |
| CN105356482B (en) * | 2015-11-20 | 2018-09-04 | 国网山东省电力公司青州市供电公司 | Low-voltage circuit voltage regulating device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110413 Termination date: 20180820 |