CN1549281A - Transformer cooling fan controlling apparatus - Google Patents
Transformer cooling fan controlling apparatus Download PDFInfo
- Publication number
- CN1549281A CN1549281A CNA031370128A CN03137012A CN1549281A CN 1549281 A CN1549281 A CN 1549281A CN A031370128 A CNA031370128 A CN A031370128A CN 03137012 A CN03137012 A CN 03137012A CN 1549281 A CN1549281 A CN 1549281A
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- control
- relay
- auxiliary
- transformer
- blower
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- Control Of Positive-Displacement Air Blowers (AREA)
- Transformer Cooling (AREA)
Abstract
The transformer cooling fan control equipment utilizes the control circuit formed from current relay auxiliary contact leading-in from transformer main control chamber, temp. controller auxiliary contact leading-in from temp. controller mounted on transformer box wall, time relay, current relay auxiliary contact, low-voltage circuit-breaker, AC contactor, thermal overload relay, intermediate relay and selection switch to provide four selectable control states of 'working, auxiliary, stand-by and stopping' for every group of cooling fans for transformer. According to the different load and change of season the user can select different control mode to make operation time of every group of cooling fans be relatively balanced so as to save energy source, reduce noise and raise service life of product.
Description
Technical field: the present invention relates to a kind of fan controller of controlling the cooling blower running status, belong to transformer accessory.
Background technology: in the control device of present widely used transformer cooling blower, its cooling control principle is by the load and the temperature automatic or manual input of transformer or withdraws from cooling fan motor cluster (seeing patent ZL-86203510).In such control system; the control mode that adopts a cooling air group of planes all to drop into or withdraw from; can make the temperature of transformer frequent lifting occur; control device for cooling blower; frequent start and stop meeting reduces the useful life of electric component; drop into or withdraw from the time of simultaneously owing to a cooling air group of planes, the power consumption of power transformation department and running noises are increased.
Summary of the invention: problem to be solved by this invention is exactly the drawback at prior art, realization is to the grouping control of transformer cooling blower, and make each group blower fan that multiple alternative control model be arranged, make the user can according to the difference of load and season temperature variation select to drop into accordingly the quantity of blower fan, make transformer steadily remain on operation in the temperature range of a safety.
The present invention is achieved in that each group cooling blower, be connected with the control cubicle connecting terminal block by control cable, introduce the current relay auxiliary contact to control cubicle from master-control room, introduce the temperature controller auxiliary contact to control cubicle from the temperature controller that the transformer tank wall is installed, form control circuit with the selector switch, the control circuit module that are installed in the control cubicle, when select switch be in the service position time, control circuit can form a work control loop, and working fan is devoted oneself to work; When selecting switch to be in aided location, control loop forms a subsidiary control loop, the control accessory fan drops into automatically when temperature surpasses set point or load current and surpasses set point, the auxiliary cooling blower of excision automatically when temperature is lower than set point or load current and is lower than set point; When selecting switch to be in the spare space, control loop can form a standby control loop, drops into automatically with blower fan in the time control preparation of breaking down of other blower fans.The present invention can control separately every group of blower fan, and every group of blower fan provided multiple alternative state of a control.
Description of drawings:
Fig. 1: cooling blower control device connection diagram
Fig. 2: cooling blower control device circuit theory diagrams
Fig. 3: cooling blower control device control flow block diagram
Among the figure: 1. transformer; 2. control cubicle; 3. cooling blower; 4. control cable; 5. connecting terminal block; 6. fault-signal does not have source contact; U, V, W-three-phase alternating-current supply inlet wire; The N-zero-power line; The KT-time relay; KA-current relay auxiliary contact; K1, K2-temperature controller auxiliary contact; QA, QA1, QA2, QA3-low-voltage circuit breaker; KM1, KM2, KM3-A.C. contactor; FR1, FR2, FR3-thermal overload relay; 1HK, 2HK, 3HK-selector switch; KM, ZJ-auxiliary relay; The RD-indicator light; M-cooling fan motor.
Embodiment: now be described with reference to the accompanying drawings the present invention.
The working power of cooling blower provides by exchanging 380V, and the inlet wire side installs low-voltage circuit breaker QA additional, and overload and short-circuit protection can be provided.
Be the example explanation with first group of blower fan M below.
When selecting make and break contact 1. 2. to connect (being in the service position), by major loop low-voltage circuit breaker QA, branch road low-voltage circuit breaker QA1, A.C. contactor KM1, thermal overload relay FR1, electric elements such as selector switch 1HK have constituted the working control circuit of cooling fan motor.Miniature circuit breaker QA1, thermal overload relay FR1 can provide overload, short circuit, open phase protection to cooling blower.Selector switch is 2. contact connection 1., makes A.C. contactor KM1 coil charged, and cooling blower is put into operation.
When selecting make and break contact 3. 4. to connect (being in aided location), major loop low-voltage circuit breaker QA, branch road low-voltage circuit breaker QA1, A.C. contactor KM1, thermal overload relay FR1, auxiliary contact K1, K2 that the pasta thermometer is introduced, the auxiliary contact KA that current relay is introduced, time relay KT, electric elements such as intermediate relay ZJ have constituted the auxiliary control circuit of cooling fan motor.At this moment, reach 2/3 of rated value as the transformer load electric current, the current relay auxiliary contact KA closure that it causes this device makes time relay KT coil charged, and the action by time-delay contact KT makes the intermediate relay ZJ coil charged; Again or pasta temperature when reaching 65 ℃, temperature controller is introduced the normal opened contact K2 closure of this device, also can make the intermediate relay ZJ coil charged, more than two kinds of situations finally make the normally open contact ZJ closure of auxiliary relay, make the 3. 4. subsidiary control loop at place connection of selector switch, auxiliary cooling blower is put into operation.When 1/2 or the pasta temperature that is lower than rated value as the transformer load electric current is lower than 50 ℃, it causes the normal opened contact KA of this device or K1 and K2 and all can disconnect, make the coil losing electricity of intermediate relay ZJ, its normal opened contact ZJ is disconnected, " assisting " loop is disconnected and the auxiliary cooling blower of excision.
When 5. 6. connecting (being in the spare space) as the selector switch contact, then cooling blower is in " standby " operating state, at this moment, major loop low-voltage circuit breaker QA, this branch road low-voltage circuit breaker QA1, A.C. contactor KM1, thermal overload relay FR1, auxiliary relay KM, the electric elements such as auxiliary contact of thermal overload relay FR2, the FR3 of other cooling fan motor place branch roads have constituted the standby control loop of cooling fan motor.Break down as second group of cooling blower or the 3rd group of cooling blower, the auxiliary normally opened contact closure of its control loop thermal overload relay FR2 or FR3 makes auxiliary relay KM coil charged, its normally opened contact KM closure, " standby " loop is connected, and standby cooling blower puts into operation.
Simultaneously, when any one group of cooling blower broke down, normally opened contact FR1 (FR2, the FR3) closure because of its thermal overload relay made auxiliary relay KM coil charged, and makes indicator light RD be indicated the fan operation state on the spot.
For satisfying the needs of modernized transformer substation construction, the present invention has also designed the no source contact output that can reflect cooling fan motor and working power state, is used for the integrated automation of transformation stations.The no source contact of this output all is connected to the control cubicle terminal board, reflects that wherein the no source contact that the cooling fan air operated machine puts into operation takes from each branch road A.C. contactor KM1, KM2, KM3; The no source contact of reflection cooling fan air operated machine fault is taken from auxiliary relay KM; The no source contact of reflection working power state is taken from major loop low-voltage circuit breaker QA.Specifically be to lead to terminal board, drop into the no source contact of state as the reflection blower fan from A.C. contactor auxiliary contact two ends; Lead to terminal board from major loop low-voltage circuit breaker auxiliary contact two ends, as the no source contact of reflection working power fault-signal; Lead to terminal board from middle relay auxiliary contact two ends, as the no source contact of reflection fan trouble signal.
Circuit design of the present invention is ingenious, uses electric component few, can realize that function is many, and is simple to operate.In the present invention, every group of blower fan is set at four kinds of optional operating states, is respectively " work, auxiliary, standby, stop ".Like this, can selectively adjust the quantity of cooling blower according to the concrete load condition of transformer, but accomplish both efficiently radiates heats, blower fan is fully utilized, fully take into account the balanced operation of every typhoon machine simultaneously again.Compare with traditional control device, can avoid the rapid variation of transformer operating temperature, avoided the frequent start-stop of electric component and blower fan, reduced transformer operation noise the useful life of having improved electric component and blower fan, saved the energy.
Claims (6)
1. transformer cooling blower control device, comprise at least one group of transformer cooling blower, cooling blower is connected with the control cubicle connecting terminal block by control cable, the control circuit that electric components such as the temperature controller auxiliary contact that the temperature controller that the current relay auxiliary contact introduced by the time relay, from master-control room is housed in the control cubicle, installs from the transformer tank wall is introduced, low-voltage circuit breaker, A.C. contactor, thermal overload relay, auxiliary relay, selector switch are formed is characterized in that:
(1) when select switch be in the service position time, control circuit forms a blower fan work control loop, and blower fan is devoted oneself to work;
(2) when selecting switch to be in the back work position, control circuit forms a blower fan subsidiary control loop, when temperature reaches set point or load current reach set point time control blower fan drop into automatically, when temperature is lower than set point or load current excision cooling blower automatically when being lower than set point;
(3) when selecting switch to be in standby service position, control circuit can form a standby control loop of blower fan, drops into automatically with blower fan in the time control preparation of breaking down of other work or accessory fan.
2, transformer cooling blower control device as claimed in claim 1, it is characterized in that: when selecting make and break contact 1. 2. to connect (being in the service position), by major loop low-voltage circuit breaker QA, branch road low-voltage circuit breaker QA1, A.C. contactor KM1, electric elements such as thermal overload relay FR1 have constituted the working control circuit of cooling fan motor.
3, transformer cooling blower control device as claimed in claim 1, it is characterized in that: when selecting make and break contact 3. 4. to connect (being in the back work position), major loop low-voltage circuit breaker QA, branch road low-voltage circuit breaker QA1, A.C. contactor KM1, thermal overload relay FR1, auxiliary contact K1, K2 that the pasta thermometer is introduced, the auxiliary contact KA that current relay is introduced, time relay KT, electric elements such as intermediate relay ZJ have constituted the auxiliary control circuit of cooling fan motor.
4, transformer cooling blower control device as claimed in claim 1, it is characterized in that: (be in standby service position) when 6. 5. the selector switch contact connected, by major loop low-voltage circuit breaker QA, this branch road low-voltage circuit breaker QA1, A.C. contactor KM1, thermal overload relay FR1, auxiliary relay KM, the thermal overload relay FR2 of other cooling fan motor place branch roads, the electric elements such as auxiliary auxiliary contact of FR3 constitute standby control loop.
5, as claim 1,2,3,4 described transformer cooling blower control device, it is characterized in that: in control circuit, constitute a faulty indication loop by thermal overload relay FR, auxiliary relay KM, indicator light RD, when arbitrary group of cooling fan motor breaks down, can indicate on the spot.
6, as claim 1,2,3,4,5 described transformer cooling blower control device, it is characterized in that: the control cubicle terminal board is provided with no source contact output, and the no source contact that reflection cooling fan motor puts into operation is taken from each branch road A.C. contactor (KM1, KM2, KM3); The no source contact of reflection cooling fan motor fault is taken from auxiliary relay KM; The no source contact of reflection working power state is taken from major loop low-voltage circuit breaker QA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031370128A CN1549281A (en) | 2003-05-24 | 2003-05-24 | Transformer cooling fan controlling apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031370128A CN1549281A (en) | 2003-05-24 | 2003-05-24 | Transformer cooling fan controlling apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN1549281A true CN1549281A (en) | 2004-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA031370128A Pending CN1549281A (en) | 2003-05-24 | 2003-05-24 | Transformer cooling fan controlling apparatus |
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| CN (1) | CN1549281A (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102094842A (en) * | 2009-12-15 | 2011-06-15 | 上海市电力公司 | Automatic energy-saving control device and method for axial flow fan of main transformer station |
| CN101299377B (en) * | 2008-03-14 | 2011-08-03 | 菏泽供电公司 | Control apparatus for automatic cyclic permutation switch-throwing of transformer cooling system |
| CN102854949A (en) * | 2012-07-26 | 2013-01-02 | 爱科瑞士制冷科技（深圳）有限公司 | Computer server heat dissipation system and method for heat-dissipating and cooling computer server heat dissipation system |
| CN102930768A (en) * | 2012-11-22 | 2013-02-13 | 郑州万特电气有限公司 | Transformer cooling loop training device |
| CN103077646A (en) * | 2012-11-22 | 2013-05-01 | 国家电网公司 | Practical training system for overhauling of secondary circuit |
| CN104795206A (en) * | 2015-04-23 | 2015-07-22 | 中冶南方工程技术有限公司 | Method for cooling large oil immersed type rectifier transformer under abnormal heated condition |
| CN105351235A (en) * | 2015-12-07 | 2016-02-24 | 国网山西省电力公司运城供电公司 | Automatic starting and stopping circuit of external draught fan of transformer |
| CN107062590A (en) * | 2017-03-30 | 2017-08-18 | 广东美的厨房电器制造有限公司 | Microwave water-heater |
| CN107289598A (en) * | 2017-08-10 | 2017-10-24 | 南京天加环境科技有限公司 | A kind of electric heater of air conditioner control system |
| CN108873962A (en) * | 2018-09-13 | 2018-11-23 | 深圳市广前电力有限公司 | For controlling the power-economizing method of GTCC power plant Main Transformer Cooler |
| CN109814633A (en) * | 2017-11-20 | 2019-05-28 | 国网内蒙古东部电力有限公司电力科学研究院 | A kind of extra-high voltage transformer cooler control circuit and its control method |
| CN110081013A (en) * | 2019-05-21 | 2019-08-02 | 保定天威保变电气股份有限公司 | A kind of control cabinet and control method that impeller of blower under auto state may be implemented and changes starting control |
| CN110957109A (en) * | 2019-11-25 | 2020-04-03 | 国网四川省电力公司广安供电公司 | Oil-immersed self-cooling transformer cooling system |
| CN114334370A (en) * | 2021-11-24 | 2022-04-12 | 大唐渭南热电有限公司 | Oil level control system of oil-immersed transformer |
-
2003
- 2003-05-24 CN CNA031370128A patent/CN1549281A/en active Pending
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101299377B (en) * | 2008-03-14 | 2011-08-03 | 菏泽供电公司 | Control apparatus for automatic cyclic permutation switch-throwing of transformer cooling system |
| CN102094842A (en) * | 2009-12-15 | 2011-06-15 | 上海市电力公司 | Automatic energy-saving control device and method for axial flow fan of main transformer station |
| CN102854949A (en) * | 2012-07-26 | 2013-01-02 | 爱科瑞士制冷科技（深圳）有限公司 | Computer server heat dissipation system and method for heat-dissipating and cooling computer server heat dissipation system |
| CN102930768A (en) * | 2012-11-22 | 2013-02-13 | 郑州万特电气有限公司 | Transformer cooling loop training device |
| CN103077646A (en) * | 2012-11-22 | 2013-05-01 | 国家电网公司 | Practical training system for overhauling of secondary circuit |
| CN104795206A (en) * | 2015-04-23 | 2015-07-22 | 中冶南方工程技术有限公司 | Method for cooling large oil immersed type rectifier transformer under abnormal heated condition |
| CN105351235A (en) * | 2015-12-07 | 2016-02-24 | 国网山西省电力公司运城供电公司 | Automatic starting and stopping circuit of external draught fan of transformer |
| CN107062590B (en) * | 2017-03-30 | 2020-10-02 | 广东美的厨房电器制造有限公司 | Microwave water heater |
| CN107062590A (en) * | 2017-03-30 | 2017-08-18 | 广东美的厨房电器制造有限公司 | Microwave water-heater |
| CN107289598A (en) * | 2017-08-10 | 2017-10-24 | 南京天加环境科技有限公司 | A kind of electric heater of air conditioner control system |
| CN109814633A (en) * | 2017-11-20 | 2019-05-28 | 国网内蒙古东部电力有限公司电力科学研究院 | A kind of extra-high voltage transformer cooler control circuit and its control method |
| CN109814633B (en) * | 2017-11-20 | 2024-05-31 | 国网内蒙古东部电力有限公司电力科学研究院 | Extra-high voltage transformer cooler control circuit and control method thereof |
| CN108873962A (en) * | 2018-09-13 | 2018-11-23 | 深圳市广前电力有限公司 | For controlling the power-economizing method of GTCC power plant Main Transformer Cooler |
| CN110081013A (en) * | 2019-05-21 | 2019-08-02 | 保定天威保变电气股份有限公司 | A kind of control cabinet and control method that impeller of blower under auto state may be implemented and changes starting control |
| CN110081013B (en) * | 2019-05-21 | 2023-12-12 | 保定天威保变电气股份有限公司 | Control box capable of realizing fan rotation starting control under automatic state |
| CN110957109A (en) * | 2019-11-25 | 2020-04-03 | 国网四川省电力公司广安供电公司 | Oil-immersed self-cooling transformer cooling system |
| CN114334370A (en) * | 2021-11-24 | 2022-04-12 | 大唐渭南热电有限公司 | Oil level control system of oil-immersed transformer |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |