CN102780225A - Intelligent three-phase asynchronous motor in situ automatic compensation device - Google Patents
Intelligent three-phase asynchronous motor in situ automatic compensation device Download PDFInfo
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- CN102780225A CN102780225A CN2012102583918A CN201210258391A CN102780225A CN 102780225 A CN102780225 A CN 102780225A CN 2012102583918 A CN2012102583918 A CN 2012102583918A CN 201210258391 A CN201210258391 A CN 201210258391A CN 102780225 A CN102780225 A CN 102780225A
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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 invention discloses an intelligent three-phase asynchronous motor box type automatic compensation device which comprises a box body, an intelligent reactive compensation controller arranged on the front side of the box body and ventilating grills arranged on the left side and the right side of the box body. Three groups of combination switches and three groups of three-phase capacitor banks are integrated in the box body. The intelligent three-phase asynchronous motor in situ automatic compensation device further comprises a current transformer arranged on the outer side of the box body, the current transformer is connected with a motor and the input end of the intelligent reactive compensation controller, and the output end of the intelligent reactive compensation controller is connected with the three groups of combination switches. Capacity of the three groups of three-phase capacitor banks is arranged according to the proportion of 1:2:5, and seven different compensation capacities of 1, 2, 3, 5, 6, 7 and 8 can be combined. A reactive power compensator, the combination switches and a reactive compensation capacitor are integrated in the portable box body and installed nearby a three-phase asynchronous motor, and therefore the intelligent three-phase asynchronous motor in situ automatic compensation device reduces large loss caused by reactive flow and can improve utilization rate of a power supply greatly.
Description
Technical field
The present invention relates to a kind of and the matching used energy saver of threephase asynchronous, particularly a kind of three-phase is idle box autocompensation installation on the spot.
Background technology
In each industrial and mining enterprises that widely applies threephase asynchronous, often select for use mode to improve power factor at distribution transformer low-pressure side access reactive-load compensation capacitor, reduce electric energy loss.This compensation way, because of motor disperses to be installed on the different equipment, and the actual operating mode of motor constantly changes, and causes existing in the low-voltage distribution system a large amount of reactive currents, can not effectively reduce electric energy loss.
In addition; In present low-voltage distribution system; Consider the service efficiency of power supply, the reactive power to low-voltage load electrical equipment produces adopts switchgear house centralized compensation mode widely; The device that uses comprises low-voltage reactive power power static compensating device and emerging in recent years low pressure and low power dynamic compensating device.
But these two kinds of devices are because the applicability of design has determined it also to exist certain defective.Because equipment has certain transmission range to the control room on the spot; When bearing power was big, reactive loss on the line also increased thereupon, has not only consumed valuable electric energy; And cause circuit in cable because the heat that this reactive energy produces; Make transmission facility aging in advance, the serious switchgear house that possibly cause increases to the line drop of the transmission line of equipment, is that equipment is in under-voltage running status for a long time; And then possibly damage machinery or other attaching device that electric equipment drives, so drawback is more.
Summary of the invention
Therefore; The purpose of this invention is to provide and a kind of reactive-load compensator, combination switch and reactive-load compensation capacitor are integrated in the portable casing; And it is installed near the threephase asynchronous nearby; Reducing the bigger loss of idle mobile generation, and can improve the utilance of power supply greatly.
For addressing the above problem, the present invention adopts following technical proposals:
The box autocompensation installation of a kind of intelligent threephase asynchronous; Said device comprises casing; Be arranged on the Intelligent Reactive Compensating Controller of casing front side; And the air grid that is arranged on the casing and arranged on left and right sides, also be integrated with three groups of combination switches and three groups of three-phase condenser banks at box house; Said device also comprises the current transformer that is arranged on the casing outside, and current transformer connects the input of motor and Intelligent Reactive Compensating Controller, and the output of Intelligent Reactive Compensating Controller links to each other with three groups of combination switches.
Further, the capacity setting of said three groups of three-phase condenser banks is according to 1: 2: 5 ratio setting, capable of being combinedly goes out 1,2,3,5,6,7,8 seven kind of different compensation capacity.
Further; First group of three-phase condenser bank links to each other with three circuit breaker FU1, FU2, FU3 with one group of combination switch; Second group of three-phase condenser bank links to each other with three circuit breaker FU4, FU5, FU6 with one group of combination switch; The 3rd group of three-phase condenser bank links to each other with three circuit breaker FU7, FU8, FU9 with one group of combination switch, and said circuit breaker is 9 altogether.
Further, said casing is installed near the threephase asynchronous nearby, to reduce idle flowing.
Beneficial effect of the present invention is:
Box autocompensation installation of the present invention; Be installed in three-phase low pressure asynchronous motor next door; The transmission of reactive current is controlled in the very short distance between this device and the three-phase low pressure asynchronous motor; And have usually about 100 to 200 meters from switchgear house to three-phase low pressure asynchronous motor power transmission lines, the reactive loss on the power transmission lines of long distance owing to increased this device dropped to minimum, thereby reached purpose of design.The present invention has transformed quadergy from the source; Can reduce a large amount of line loss energy, improve the distribution transforming utilance, reduce apparent power; Realized the terminal compensation that the centralized compensation device can't be accomplished effectively; To drop to minimumly by the reactive loss of asynchronous electric machine circuit transmission, improve the power utilization rate widely, prolong the useful life of power transmission lines and equipment.
Intelligent Reactive Compensating Controller can be according to the power factor under the different operating conditions of motor; Calculate required reactive compensation capacity; And according to the cut-offfing of result of calculation control combination switch, to drop into the capacitor bank of optimum capacity, to reduce electric energy loss to greatest extent.Near the threephase asynchronous that device of the present invention is convenient to install, reduce idle flowing to greatest extent, reduce electric energy loss.Device volume of the present invention is little, safe and reliable, and is convenient to installation and maintenance.
Description of drawings
Fig. 1 is the sketch map of the box autocompensation installation of intelligent threephase asynchronous.
Fig. 2 is the electrical schematic diagram of the box autocompensation installation of Fig. 1.
Among the figure, 1-casing, 2-Intelligent Reactive Compensating Controller, 3-combination switch, 4-three-phase condenser bank, 5-air grid
Embodiment
Below in conjunction with specific embodiment, further set forth the present invention.
With reference to Fig. 1-2; The box autocompensation installation of intelligent threephase asynchronous of the present invention comprises casing 1; Be arranged on the Intelligent Reactive Compensating Controller 2 of casing 1 front side; And the air grid 5 that is arranged on the casing left and right sides, also be integrated with three groups of combination switches 3 and three groups of three-phase condenser banks 4 at box house.Wherein casing is installed near the threephase asynchronous nearby, to reduce idle flowing.In addition; Box autocompensation installation also comprises the current transformer that is arranged on the casing outside; Current transformer connects the input of motor and Intelligent Reactive Compensating Controller, the input of Intelligent Reactive Compensating Controller also with respectively being connected of motor, output links to each other with three groups of combination switches; First group of three-phase condenser bank links to each other with three circuit breaker FU1, FU2, FU3 with one group of combination switch; Second group of three-phase condenser bank links to each other with three circuit breaker FU4, FU5, FU6 with one group of combination switch; The 3rd group of three-phase condenser bank links to each other with three circuit breaker FU7, FU8, FU9 with one group of combination switch, and circuit breaker is 9 altogether.
When system moves; Intelligent Reactive Compensating Controller 2 is through the power factor (PF) of current transformer monitoring threephase asynchronous, and the control signal of reactive-load intelligent controller output is afterwards controlled 3 actions of three groups of combination switches; Final combination switch 3 drives three groups of three-phase condenser bank input/excisions; Control the power factor (PF) of threephase asynchronous work, thereby reach compensation, reduce the reactive current of power transmission lines simultaneously reactive power.
Combination switch has the advantage that realizes operating passing zero in the moment that switches on and off capacitor, thereby can guarantee that no-flashy-flow, no harmonic wave inject.
Another characteristics of the present invention are; The capacity capacity setting of three groups of three-phase reactive-load compensation capacitors was according to 1: 2: 5 ratio setting; Therefore; Can be combined into 1,2,3,5,6,7,8 seven kind of different compensation capacity, can dynamically satisfy the optimal compensation capacity needs of threephase asynchronous under different operating modes such as zero load, underloading, heavy duty.That is to say; Intelligent Reactive Compensating Controller can calculate required reactive compensation capacity according to the power factor under the different operating conditions of motor, and cut-offfing according to result of calculation control combination switch; To drop into the capacitor bank of optimum capacity, to reduce electric energy loss to greatest extent.
Near the threephase asynchronous that device of the present invention is convenient to install, reduce idle flowing to greatest extent, reduce electric energy loss.Device volume of the present invention is little, safe and reliable, and is convenient to installation and maintenance.
As stated; It only is preferred embodiments of the present invention; Be not that the present invention is done any pro forma restriction, every foundation technical spirit of the present invention all still belongs in the scope of technical scheme of the present invention any simple modification, equivalent variations and modification that above embodiment did.
Claims (4)
1. box autocompensation installation of intelligent threephase asynchronous; Said device comprises casing; Be arranged on the Intelligent Reactive Compensating Controller of casing front side; And the air grid that is arranged on the casing and arranged on left and right sides, also be integrated with three groups of combination switches and three groups of three-phase condenser banks at box house; It is characterized in that said device also comprises the current transformer that is arranged on the casing outside, current transformer connects the input of motor and Intelligent Reactive Compensating Controller, and the output of Intelligent Reactive Compensating Controller links to each other with three groups of combination switches.
2. the box autocompensation installation of intelligent threephase asynchronous according to claim 1; It is characterized in that; The capacity setting of said three groups of three-phase condenser banks is according to 1: 2: 5 ratio setting, capable of being combinedly goes out 1,2,3,5,6,7,8 seven kind of different compensation capacity.
3. the box autocompensation installation of intelligent threephase asynchronous according to claim 1 and 2; It is characterized in that; First group of three-phase condenser bank links to each other with three circuit breaker FU1, FU2, FU3 with one group of combination switch; Second group of three-phase condenser bank links to each other with three circuit breaker FU4, FU5, FU6 with one group of combination switch, and the 3rd group of three-phase condenser bank links to each other with three circuit breaker FU7, FU8, FU9 with one group of combination switch, and said circuit breaker is 9 altogether.
4. the box autocompensation installation of intelligent threephase asynchronous according to claim 3 is characterized in that said casing is installed near the threephase asynchronous nearby, to reduce idle flowing.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012102583918A CN102780225A (en) | 2012-07-24 | 2012-07-24 | Intelligent three-phase asynchronous motor in situ automatic compensation device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012102583918A CN102780225A (en) | 2012-07-24 | 2012-07-24 | Intelligent three-phase asynchronous motor in situ automatic compensation device |
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| CN102780225A true CN102780225A (en) | 2012-11-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103972903A (en) * | 2014-04-21 | 2014-08-06 | 广西鼎轩科技有限公司 | Reactive in-place intelligent compensation device for three-phase asynchronous motor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5644463A (en) * | 1992-10-20 | 1997-07-01 | University Of Washington | Adaptive sequential controller with minimum switching energy |
| CN202034787U (en) * | 2011-04-25 | 2011-11-09 | 童淮安 | Anti-explosive filter compensation energy-saving set device for mines |
| CN102364802A (en) * | 2011-11-11 | 2012-02-29 | 安徽禾田电气有限公司 | Reactive power terminal compensation energy-saving device for three-phase low-voltage asynchronous motor |
| CN203166529U (en) * | 2012-07-24 | 2013-08-28 | 莒南县供电公司 | Local automatic compensation device of intelligent three-phase asynchronous motor |
-
2012
- 2012-07-24 CN CN2012102583918A patent/CN102780225A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5644463A (en) * | 1992-10-20 | 1997-07-01 | University Of Washington | Adaptive sequential controller with minimum switching energy |
| CN202034787U (en) * | 2011-04-25 | 2011-11-09 | 童淮安 | Anti-explosive filter compensation energy-saving set device for mines |
| CN102364802A (en) * | 2011-11-11 | 2012-02-29 | 安徽禾田电气有限公司 | Reactive power terminal compensation energy-saving device for three-phase low-voltage asynchronous motor |
| CN203166529U (en) * | 2012-07-24 | 2013-08-28 | 莒南县供电公司 | Local automatic compensation device of intelligent three-phase asynchronous motor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103972903A (en) * | 2014-04-21 | 2014-08-06 | 广西鼎轩科技有限公司 | Reactive in-place intelligent compensation device for three-phase asynchronous motor |
| CN103972903B (en) * | 2014-04-21 | 2016-10-05 | 广西鼎轩科技有限公司 | A kind of device for the idle intelligent compensation on the spot of threephase asynchronous |
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Application publication date: 20121114 |