CN200994113Y - Large-sized motor liquid-state reduced-voltage reactive compensating soft starting device - Google Patents
Large-sized motor liquid-state reduced-voltage reactive compensating soft starting device Download PDFInfo
- Publication number
- CN200994113Y CN200994113Y CNU2006201701847U CN200620170184U CN200994113Y CN 200994113 Y CN200994113 Y CN 200994113Y CN U2006201701847 U CNU2006201701847 U CN U2006201701847U CN 200620170184 U CN200620170184 U CN 200620170184U CN 200994113 Y CN200994113 Y CN 200994113Y
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- China
- Prior art keywords
- electric motor
- switch
- reactive
- motor
- pressure drop
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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
Abstract
The utility model relates to a smooth start device using a liquid pressure drop and reactive power compensation for large electric motor and belongs to technical field of electrical engineering, which solves the problem that the reactor used by present large electric motor has low power factor during start up and large component of high sub harmonic wave, and the problem that driving device of electric motor units of transformers requires that the public power network has enough large capacity. The defects of high cost of start device and high cost of maintenance are also solved. The utility model comprises a smooth start device using liquid pressure drop and transfer switch for start-up and operation. The input terminal of start device using liquid pressure drop is connected with power network through switch of start-up cabinet and its output terminal is connected with electric motor through switch in switch cabinet. Characterized in that output terminal of start device using liquid pressure drop is also connected in parallel with capacitor with reactive power compensation. Having advantages of simple structure, reliable performance, low cost, convenient usage and maintenance, the utility model decreases start-up current of electric motor and the influences on voltage of power network caused by start-up of electric motor, reduces variations in voltage amplitude and promotes power factor during start-up of electric motor.
Description
Technical field
The utility model belongs to electrical technology field, is specifically related to a kind of major loop of high capacity motor soft-start by lowering voltage device.
Background technology
At present, the impact that when starting of big capacity induction alternating current (AC) motor needs reduced voltage starting with the minimizing motor starting electrical network is caused, the device of high capacity motor reduced voltage starting has magnetic control soft starter now, that is employing reactor starting, transformer reduced voltage starting device and high-pressure frequency-conversion soft starter device, its power factor was low when wherein magnetic control soft starter started, and higher harmonic components is big; Transformer reduced voltage starting matching requirements public electric wire net is enough big, and perhaps openly the capacity of short circuit of contact is enough big; The cost height though high-pressure frequency-conversion soft starter device starting effect is good, the use and maintenance cost height is not easy to wide popularization and application.
Summary of the invention
The purpose of this utility model is, overcome the deficiency that exists in the existing soft initiator device, a kind of high voltage large-sized motor starting electric current that reduces is provided, reduction is to the influence of public electric wire net voltage, and simple in structure, dependable performance, cost are low, and working service is the liquid-state step-down reactive compensation soft starter for high-capacity motor device easily.
The technical solution of the utility model is: the utility model comprises liquid-state step-down soft starter device A and starting and operation diverter switch cabinet, electrical network is inserted by starting cabinet switch 2QF in the end of incoming cables of liquid-state step-down soft starter device A, leading-out terminal links to each other with motor M by switching cabinet switch 3QF, it is characterized in that the starting device leading-out terminal also and be connected to the reactive power compensation capacitor C.
Said reactive power compensation capacitor C comprises reactive-load compensation capacitor C in the technical solutions of the utility model
1, C
2
Said reactive-load compensation capacitor C in the technical solutions of the utility model
1With motor M parallel connection, building-out capacitor C
2In parallel with run switch 4QF series circuit and motor M.
Advantage of the present utility model: 1, reduce the motor starting electric current; To the influence of line voltage, reduce voltage ripple of power network amplitude when starting when 2, reducing motor starting; Power factor when 3, improving electric motor starting; 4, simple in structure, dependable performance, cost is low, working service is convenient.
Description of drawings
Fig. 1, Fig. 2 are two kinds of typical example line charts of the present utility model;
The utility model is described in further detail below in conjunction with accompanying drawing and example.
Embodiment
In the example of Fig. 1, A is the liquid-state step-down soft starter device, and B is a power transformer, C
1, C
2Be reactive-load compensation capacitor, 1QF is the motor run switch, and 2QF, 3QF, 4QF are respectively motor M starting switchs.The end of incoming cables of liquid-state step-down soft starter device A meets power transformer B by switch 2QF, and leading-out terminal meets motor M by 3QF, capacitor group C
2With motor M parallel connection, simultaneously the leading-out terminal of soft-start by lowering voltage device A by 4QF also and be connected to capacitor group C
1, C
1, C
2When starting, compensate start loop is idle.When motor M prestart run switch 1QF disconnects, start loop 3QF, 4QF switch close a floodgate, motor M was in and treated starting state this moment, after starting switch 2QF closes a floodgate, motor M begins starting, when the rotating speed of motor M during, perhaps when beginning to fall after rise, the start loop electric current disconnects 4QF excision balanced capacitor C near rated speed
1, 1QF closes a floodgate after several seconds of delaying time, and 2QF, 3QF disconnect simultaneously, capacitor C
2Continue and motor parallel running together capacitor C
1, C
2The degree of the total capacity motor starting impulse current that can bear according to electric power system decide compensation condenser C
2The reactive power compensation needs of capacity when moving according to motor come fixed.
In the example of Fig. 2, remove and cancelled operation reactive-load compensation capacitor C
2In addition, other are same with Fig. 1 example.
Claims (3)
1, a kind of liquid-state step-down reactive compensation soft starter for high-capacity motor device, comprise liquid-state step-down soft starter device A and starting and operation diverter switch cabinet, electrical network is inserted by starting cabinet switch 2QF in the end of incoming cables of liquid-state step-down soft starter device, leading-out terminal links to each other with motor M by switching cabinet switch 3QF, it is characterized in that the starting device leading-out terminal also and be connected to the reactive power compensation capacitor C.
2, liquid-state step-down reactive compensation soft starter for high-capacity motor device according to claim 1 is characterized in that said reactive power compensation capacitor C comprises reactive-load compensation capacitor C
1And C
2
3, liquid-state step-down reactive compensation soft starter for high-capacity motor device according to claim 1 and 2 is characterized in that said reactive-load compensation capacitor C
1With motor M parallel connection, run switch 4QF and reactive-load compensation capacitor C
2Series circuit is in parallel with motor M.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201701847U CN200994113Y (en) | 2006-12-26 | 2006-12-26 | Large-sized motor liquid-state reduced-voltage reactive compensating soft starting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201701847U CN200994113Y (en) | 2006-12-26 | 2006-12-26 | Large-sized motor liquid-state reduced-voltage reactive compensating soft starting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200994113Y true CN200994113Y (en) | 2007-12-19 |
Family
ID=38947184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201701847U Expired - Fee Related CN200994113Y (en) | 2006-12-26 | 2006-12-26 | Large-sized motor liquid-state reduced-voltage reactive compensating soft starting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200994113Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103138276A (en) * | 2013-02-06 | 2013-06-05 | 广东电网公司佛山供电局 | Reactive compensation method and device of distributing line of high-power motor containing 10 kilovolt (KV) |
| CN105119534A (en) * | 2015-10-09 | 2015-12-02 | 重庆大学 | Squirrel cage motor voltage regulation stability control starting control device |
-
2006
- 2006-12-26 CN CNU2006201701847U patent/CN200994113Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103138276A (en) * | 2013-02-06 | 2013-06-05 | 广东电网公司佛山供电局 | Reactive compensation method and device of distributing line of high-power motor containing 10 kilovolt (KV) |
| CN105119534A (en) * | 2015-10-09 | 2015-12-02 | 重庆大学 | Squirrel cage motor voltage regulation stability control starting control device |
| CN105119534B (en) * | 2015-10-09 | 2018-03-30 | 重庆大学 | Start-control device is surely controlled in interconnected cage motor pressure regulation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Xiangfan Big Pawer Electrical Engineering Co., Ltd. Assignor: Xiangfan Dali Industrial Control Co., Ltd. Contract fulfillment period: 2009.12.23 to 2016.12.23 Contract record no.: 2010420000001 Denomination of utility model: Liquid-state step-down reactive compensation soft starter for high-capacity motor Granted publication date: 20071219 License type: Exclusive license Record date: 20100104 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.12.23 TO 2016.12.23; CHANGE OF CONTRACT Name of requester: XIANGFAN DALI ELECTRICAL ENGINEERING CO., LTD. Effective date: 20100104 |
|
| ASS | Succession or assignment of patent right |
Owner name: XIANGFAN DALI ELECTRICAL CO., LTD. Free format text: FORMER OWNER: XIANGFAN DALI INDUSTRIAL CONTROL CO., LTD. Effective date: 20100504 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 441003 7/F, TORCH BUILDING, NO.15, CHUNYUAN WEST ROAD, XIANGFAN CITY, HUBEI PROVINCE TO: 441003 NO.5, HANGYU ROAD, HIGH-TECH INDUSTRIAL PARK DISTRICT, XIANGFAN CITY, HUBEI PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20100504 Address after: HangYu Road, hi tech Industrial Park, Hubei city of Xiangfan Province, No. 5 441003 Patentee after: Xiangfan Big Pawer Electrical Engineering Co., Ltd. Address before: Seven, Torch Hotel, No. 15, Garden Garden Road, 441003, Xiangfan, Hubei Patentee before: Xiangfan Dali Industrial Control Co., Ltd. |
|
| ASS | Succession or assignment of patent right |
Owner name: DALI ELECTRICAL ENGINEERING XIANGYANG CO., LTD. Free format text: FORMER OWNER: XIANGFAN DALI ELECTRICAL ENGINEERING CO., LTD. Effective date: 20111020 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 441003 XIANGFAN, HUBEI PROVINCE TO: 441057 XIANGFAN, HUBEI PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20111020 Address after: HangYu Road, hi tech Industrial Park, Hubei city of Xiangyang Province, No. 5 441057 Patentee after: Big Pawer Electrical Technology Xiangyang Co., Ltd. Address before: HangYu Road, hi tech Industrial Park, Hubei city of Xiangfan Province, No. 5 441003 Patentee before: Xiangfan Big Pawer Electrical Engineering Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071219 Termination date: 20151226 |
|
| EXPY | Termination of patent right or utility model |