CN207884296U - Have wind electric converter of the dehumidifying except condensation function - Google Patents
Have wind electric converter of the dehumidifying except condensation function Download PDFInfo
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- CN207884296U CN207884296U CN201721765227.0U CN201721765227U CN207884296U CN 207884296 U CN207884296 U CN 207884296U CN 201721765227 U CN201721765227 U CN 201721765227U CN 207884296 U CN207884296 U CN 207884296U
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- cabinet
- grid
- humidity
- switch board
- electric converter
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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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
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Abstract
The utility model is related to a kind of wind electric converter having dehumidifying except condensation function, electric reconstruction includes that grid-connection cabinet increases cooling fan, while meeting the ventilation and heat of grid-connection cabinet and switch board；Grid-connection cabinet and the original Temperature controlled heater of switch board are changed to common heater, it heats and dehumidifies in switch board by temperature and humidity detection device, part of devices heating problem when converter cabinet operation is considered simultaneously, restricted minimization device must not heat after main contactor closure, avoid generating high temperature in cabinet；Heater is provided simultaneously with low-temperature heat and dehumidification function, and in the case of high humility, and Heating And Ventilating is parallel so that has air circulation in cabinet, effect on moisture extraction is apparent, and the utility model cooling fan is placed in cabinet top, reduces the size in cabinet depth direction；The requirement at wind power equipment scene can more be met.
Description
Technical field
The utility model belongs to power electronics field, is related to a kind of preventing high humidity and solidifying for wind power generating set
The wind electric converter of dew.
Background technology
For power electronics high-power system, in south China and rivers and lakes nearby all can have high humility even
Condensation problem.For electric device, influence of the high humility to electrical equipment is mainly dielectric strength, fungus growth, metal
Corrosion.When the attachment of moisture in air is on insulating materials surface, the insulation resistance of electrical equipment can be made to reduce, the leakage of equipment
Electric current greatly increases, and causes insulation breakdown, generates electric fault.The acidic materials secreted out of in mould metabolic process can make to lead
Electric metal and contact material generate one layer of dark and gloomy film, cause contact resistance to increase, are affected to converter cabinet interior circuit board.
Metal erosion can reduce equipment performance and service life.
Since wet-out property has important shadow to the job stability of whole system, the service life of electric and electronic device
It rings, and former current transformer, especially grid-connection cabinet and switch board belong to confined space relatively, without dehumidification function, need to be designed
Increase this function, design not only needs to dehumidify, it is also necessary to consider the integral heat sink performance of cabinet.Simultaneously because in converter cabinet
Available space is limited, it is required that the oil (gas) filling device that reduces has reached dehumidification function.
Utility model content
The purpose of this utility model be exactly in order to overcome the wind electric converter of the prior art not have a dehumidification function, it is empty in cabinet
Between relatively closing the shortcomings that can not radiating, provide that a kind of radiating efficiency is high, has dehumidifying except the air-cooled wind-powered electricity generation of condensation function becomes
Flow device.
There is provided a kind of wind electric converter having dehumidifying except condensation function, which is characterized in that grid-connection cabinet, switch board, power
Two-wire dual control heater is both provided in cabinet,
Humidity detector and temperature-detecting device, the Humidity Detection are additionally provided in the cabinet of the wind electric converter
Device and temperature-detecting device parallel connection are simultaneously connect with the two-wire dual control heater so that are higher than in the humidity detected
Predetermined moisture or the temperature detected are less than two-wire dual control heater start-up operation heating when predetermined temperature, described grid-connected
It is provided with cooling fan in cabinet and the switch board.
In at least one embodiment, the grid-connection cabinet and the power cabinet share described in a humidity controller conduct
Humidity detector detects humidity.
In at least one embodiment, come as the humidity detector equipped with humidity controller in the switch board
Detect humidity.
In at least one embodiment, the grid-connection cabinet and the switch board share a cooling fan.
In at least one embodiment, the bottom of the grid-connection cabinet is provided with vent window, the bottom of the switch board with
The connected position of the grid-connection cabinet is equipped with vent window, and the grid-connection cabinet is arranged at the top of the grid-connection cabinet and the switch board is total
Cooling fan.
In at least one embodiment, the cooling fan is constructed such that wind blows to top from below.
In at least one embodiment, the humidity detector is connect with relay, the relay with it is described double
Line dual control heater is connected with the cooling fan.
The beneficial effects of the utility model include：The utility model is divulged information and is heated parallel form using cabinet and removed
It is wet to remove condensation, by heater heating and dehumidification, force outlet air, cold wind to flow through radiator from the bottom to top, be conducive to heat at the top of cabinet
Cycle；Temperature and Humidity plays the monitoring and control double effects of heating and dehumidifying.Reduce electric components and circuit board
Equal sensing elements corrosion, the possibility for generating mould, reducing dielectric strength, the requirement and increase that can more meet wind power equipment scene are set
Standby service life.
Description of the drawings
Fig. 1 is the electrical schematics of the heating system of the wind electric converter of the utility model；
Fig. 2 is wind turbine typical air power performance curve；
Fig. 3 is the electrical schematics of the ventilating system of the wind electric converter of the utility model.
Specific implementation mode
Illustrate the illustrative embodiments of the utility model with reference to the accompanying drawings.
One, grid-connection cabinet dehumidifying heat dissipation transformation
As shown in Figure 1, humidity is detected since power cabinet and grid-connection cabinet share a humidity controller in the present embodiment, thus it is wet
It spends control detection signal and transmits more accurate and reasonable, humidity controller 3S281 and relay 2K284 coils by control relay
Series connection, relay have used wherein three there are four normally opened contact here, when humidity is higher than 85% in cabinet, humidity controller
It is closed, relay coil obtains electric, and contact 13,14 transmits signals to feddback relay device (referring to Fig. 3), and 3KM483 controls grid-connection cabinet
When wind turbine, i.e. humidity are more than 85%, grid-connection cabinet wind turbine starts, ventilation and heat；Relay contact 23,24 transmits signals to
1EH281,1EH281 are power heater counter, power cabinet heating and dehumidification after contact closure；Relay contact 43,44 passes signal
It send to 3EH281,3EH281 is grid-connected heater counter, grid-connection cabinet heating and dehumidification after contact closure, while 2KM483 is current transformer
Main contactor closure signal feddback relay device, if current transformer main contactor is closed, spontaneous heat increases in cabinet, then heater is not
It must start；
In original design, grid-connection cabinet is found through experiments that without cooling fan, can only be played if even if heater is added in cabinet
The effect locally to dehumidify, at the same the case where can also cause hot-spot, effect on moisture extraction unobvious, while testing to offer for sale interior first device
Part spontaneous heating itself is larger, therefore considers to need that cooling fan is added；Fan Selection is here related to；
The type selecting of wind turbine is mainly determined by following three aspects parameter：
1, use condition：Environment temperature, humidity, height above sea level, mounting means；
2, technology requirement：Rated voltage, frequency, rated power, the class of insulation, degree of protection, dynamic balancing coefficient, bearing
Deng；
3, performance requirement：Wind turbine producer can carry out airperformance test with regard to Fan Product, and it is dynamic to draw typical air
Power performance curve, when being cabinet type selecting, the aerodynamic quality curve that need to be provided in producer's sample according to systematic air flow and windage
On search whether the wind turbine for meeting actual requirement；Similar graph can refer to Fig. 2；
Show that the air quantity of cabinet needs to calculate the heat dissipation capacity of cabinet, such as current transformer grid-connection cabinet, main heater element are
Transformer and heater, transformer and heater producer can provide calorific value, but transformer calorific value producer provide and be not allowed
Really, it still needs to oneself experiment or calculates, by element heating amount divided by 3, as air quantity in cabinet, wherein calorific value divided by 3 be part
The empirical value that Fan Equipment is obtained in practice using producer, concrete numerical value are by formula qhot=ρ VCp(THot, out-THot, in)
It calculating, Cp is specific heat at constant pressure wherein in formula, i.e., in the case where pressure is constant, certain mass temperature liter of unit mass
The heat absorbed needed for high 1K, is called " specific heat at constant pressure " of this kind of substance, and the specific heat capacity of air is 1.0 × 103J/ (kg.
DEG C), density preferably presses extreme condition, such as plateau atmospheric density numerical value is calculated.
It calculates windage to need shutter windage, radiator windage, dust-proof cotton windage is added, as cabinet windage, heat dissipation
Device windage need to pass through emulation, and shutter windage and dust-proof cotton windage can be tested by special instrument to be measured.
Relatively simple Fan Selection flow is to calculate air quantity first, is provided further according to shutter and dust-proof cotton producer
Windage value and previous experiences value estimate windage, obtain power points, bent by the typical air power performance on Fan Selection handbook
Line selection takes substantially suitable wind turbine, is tested using this wind turbine, and assembling to cabinet is surveyed with rotational speed meters and ammeter
Blower interior rotating speed and electric current are measured, because wind turbine carried out aerodynamic experiment when dispatching from the factory, aerodynamic experiment can measure outlet air
The multinomial numerical value such as electromechanical stream, rotating speed, air quantity, static pressure, when measuring electric current and rotating speed, you can according to the air quantity at each time point with
Static pressure draws out system resistance curve, and resistance curve and offer curves intersection of institute of wind turbine producer are preferably typical air dynamic property
Can the position of curve 1/2 be suitable wind turbine because for present forward tilt wind turbine used, best efficiency point for it most
1/2 position of Wind Volume；Selection wind turbine should be noted that each producer's test equipment of Fan Product aerodynamic experiment respectively has not
Together, there is no respective country norm constraint, aerodynamic quality curve that can slightly have difference, therefore after choosing Fan Product yet, it must
The reliability of Fan Product must be determined by measuring main heat generating spot.
By above-mentioned test method, wind turbine 3M483, control mode such as Fig. 3 are finally selected, by testing the cabinet not only met
Interior heat dissipation, while meeting ventilation drying effect, because there is vent window between grid-connection cabinet and switch board, also meet the ventilation of switch board
Cooling requirements
Two, switch board dehumidifying heat dissipation transformation
Switch board is used alone a humidity controller 2S283 and detects humidity because opposite heat dissipation ventilation effect is poor, when
Humidity is more than 85% heater 2EH282 heating, meanwhile, temperature signal is detected by the temp control switch of the original design of cabinet, low
In 5 DEG C of heating, stop heating higher than 40 DEG C, realizes that control heater heats by relay 2K281
Three, power cabinet dehumidifying heat dissipation transformation
In power cabinet, Sensitive Apparatus has been provided with individual adding thermal resistance in original design and is heated, and designs original
On the basis of increase dehumidification function, grid-connection cabinet humidity controller signal, heater when humidity is larger are received by relay 2K284
Start heating.
The utility model provides a kind of air-cooled wind electric converter having dehumidifying except condensation function, and electricity piece needs to increase
Add moisture detector part：Humidity controller；Dehumidify component：Cooling fan, heater；Control component：Miniature circuit breaker, after
Electric appliance；Wiring and auxiliary element：Connecting terminal, auxiliary contact.
The implementation of the utility model is：Measure whether converter cabinet humidity needs to dehumidify by humidity controller
It except condensation, is measured by factory's specific experiment, power cabinet and grid-connection cabinet humidity are almost the same, and switch board leads to because relatively sealing
Wind environment is poor, and humidity is higher than other two cabinets, therefore design power cabinet and the shared humidity controller detection of grid-connection cabinet are wet
A humidity controller is applied alone in degree, switch board；
Grid-connection cabinet, switch board, power cabinet respectively install heater one, in former electrical design, are furnished with temperature control heating in cabinet
Device does not have dehumidification function for heating in cabinet under low temperature, then needs heater being changed to common heater, temperature inspection
It surveys and is separately realized with temperature controller, because heater is applied not only to dehumidify, it is also necessary to be used for low-temperature heat, therefore heater needs
It is two-wire dual control heater, i.e. low temperature or high humidity reaches arbitrary condition and can all heat, and the two is in parallel；
Grid-connection cabinet original designs Blower-free heat dissipation, and only outputing vent window on the cabinet has reached the purpose that heat distributes, and cabinet
Interior transformer fever itself is higher, and heat distributes speed and is less than Wen Sheng, while also Blower-free radiates switch board, only in bottom of cabinet bulk
There is vent window in the position being connected with grid-connection cabinet, and heat dissipation performance is poor, is obtained in the test of Blower-free engineering test, such as height
Humidity environment, heater heat only to effective near heater, and be easy to cause localized hyperthermia's overheat, and the change of switch board moisture is done
Steam can not distribute, and nearby temperature is excessively high for heater, is not only unable to reach heat dissipation purpose, high temperature and humidity, experiment can also be caused to comment
Estimate and needs to increase cooling fan ventilation and heat and dehumidifying；Because vent window is arranged at switch board and grid-connection cabinet bottom, such as at the top of grid-connection cabinet
Increase cooling fan, cold wind flows from the bottom to top, you can meeting grid-connection cabinet air-conditioning requirement can also make switch board have air circulation, lead to
Wind achievees the effect that heat dissipation dehumidifying；
Increase the humidity controller that relay is used to be installed power cabinet to feed back, and controls power cabinet and grid-connection cabinet heating
Device, while controlling grid-connection cabinet cooling fan start and stop；
Increase miniature circuit breaker for controlling each heater starting；
Increase auxiliary contact for controlling grid-connection cabinet cooling fan so that when power cabinet reactor fan operation, grid-connection cabinet
Cooling fan also starts.
The beneficial effects of the utility model include：
The utility model is divulged information and is heated parallel form using cabinet and carries out dehumidifying except condensation, is removed by heater heating
It is wet, force outlet air, cold wind to flow through radiator from the bottom to top, be conducive to recycle heat at the top of cabinet；Temperature and Humidity, which plays, to be added
The monitoring and control double effects of heat and dehumidifying.Reduce the corrosion of the sensing elements such as electric components and circuit board, generate mould,
The possibility for reducing dielectric strength, can more meet the requirement at wind power equipment scene and increase service life of equipment.
Claims (7)
1. a kind of wind electric converter having dehumidifying except condensation function, which is characterized in that grid-connection cabinet, switch board, in power cabinet
It is provided with two-wire dual control heater,
Humidity detector and temperature-detecting device, the humidity detector are additionally provided in the cabinet of the wind electric converter
It is in parallel with the temperature-detecting device and connect with the two-wire dual control heater so that in the humidity detected higher than making a reservation for
Humidity or the temperature that detects are less than two-wire dual control heater when predetermined temperature and start to work heating, the grid-connection cabinet and
It is provided with cooling fan in the switch board.
2. the wind electric converter according to claim 1 for having dehumidifying except condensation function, which is characterized in that the grid-connection cabinet
A humidity controller, which is shared, with the power cabinet detects humidity as the humidity detector.
3. the wind electric converter according to claim 1 for having dehumidifying except condensation function, which is characterized in that the switch board
It is interior to detect humidity as the humidity detector equipped with humidity controller.
4. the wind electric converter according to claim 1 for having dehumidifying except condensation function, which is characterized in that the grid-connection cabinet
A cooling fan is shared with the switch board.
5. the wind electric converter according to claim 4 for having dehumidifying except condensation function, which is characterized in that the grid-connection cabinet
Bottom be provided with vent window, the position of the bottom of the switch board being connected with the grid-connection cabinet is equipped with vent window, it is described simultaneously
The cooling fan that the grid-connection cabinet and the switch board share is arranged in the top of net cabinet.
6. the wind electric converter according to claim 4 for having dehumidifying except condensation function, which is characterized in that the radiation air
Machine is constructed such that wind blows to top from below.
7. the wind electric converter according to claim 1 for having dehumidifying except condensation function, which is characterized in that the humidity inspection
It surveys device to connect with relay, the relay is connect with the two-wire dual control heater and the cooling fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721765227.0U CN207884296U (en) | 2017-12-18 | 2017-12-18 | Have wind electric converter of the dehumidifying except condensation function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721765227.0U CN207884296U (en) | 2017-12-18 | 2017-12-18 | Have wind electric converter of the dehumidifying except condensation function |
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| Publication Number | Publication Date |
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| CN207884296U true CN207884296U (en) | 2018-09-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721765227.0U Active CN207884296U (en) | 2017-12-18 | 2017-12-18 | Have wind electric converter of the dehumidifying except condensation function |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109917836A (en) * | 2019-04-12 | 2019-06-21 | 焦作华飞电子电器股份有限公司 | A kind of High aititude, low temperature environment electric control gear intelligent environment regulator control system |
| CN110502051A (en) * | 2019-09-23 | 2019-11-26 | 重庆佩特电气有限公司 | A kind of heating and dehumidification device and method of wind electric converter |
-
2017
- 2017-12-18 CN CN201721765227.0U patent/CN207884296U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109917836A (en) * | 2019-04-12 | 2019-06-21 | 焦作华飞电子电器股份有限公司 | A kind of High aititude, low temperature environment electric control gear intelligent environment regulator control system |
| CN109917836B (en) * | 2019-04-12 | 2023-12-26 | 焦作华飞电子电器股份有限公司 | Intelligent environment regulation and control system for high-altitude and low-temperature environment electric control device |
| CN110502051A (en) * | 2019-09-23 | 2019-11-26 | 重庆佩特电气有限公司 | A kind of heating and dehumidification device and method of wind electric converter |
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