CN208384440U - Agricultural machinery plant area transformer station high-voltage side bus temperature control device - Google Patents
Agricultural machinery plant area transformer station high-voltage side bus temperature control device Download PDFInfo
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- CN208384440U CN208384440U CN201821226700.2U CN201821226700U CN208384440U CN 208384440 U CN208384440 U CN 208384440U CN 201821226700 U CN201821226700 U CN 201821226700U CN 208384440 U CN208384440 U CN 208384440U
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Abstract
The utility model discloses a kind of agricultural machinery plant area transformer station high-voltage side bus temperature control devices, including air-blower control circuit and fan monitoring unit, air-blower control circuit includes the three-phase power line being correspondingly connected with distribution transformer, chopper switch ZK is connected on three-phase power line, the normally opened contact KM-1, fuse FR and refrigeration fan M of relay KM are serially connected on the three-phase power line of chopper switch ZK outlet side, appointing for three-phase power line is connected with temperature control loop between two lines road；Electrothermal relay KM is started or stoped by different thermal contacts; to turn on automatically or the power supply of disconnected refrigeration fan M; realize the automatic switching of refrigeration fan M; by realizing control loop short circuit, overload protection with fuse, electrothermal relay; fan monitoring unit passes through temperature sensor; to distribution transformer real-time perfoming temperature display and control, air-cooled operation or air-cooled disappearance of signal are sent to master station, it is ensured that the safe and stable operation of distribution system.
Description
Technical field
The utility model relates to a kind of power equipment falling temperature technique fields more particularly to a kind of agricultural machinery plant area to be transported with transformer
Row temperature control device.
Background technique
Agricultural machinery factory's electricity consumption is big, and transformer longevity of service, load are big, it is easy to showing for transformer overheating operation occurs
As.Transformer long-time often operates under overtemperature state, and the winding insulation of transformer station high-voltage side bus can be made to reduce, is even broken
It is bad.Therefore, how temperature preferably is carried out to running transformer to adjust and control, become plant area power department operator on duty
One of major issue for needing to take seriously.It solves the above problems, installing air-cooled facility on the transformer is to reduce transformer temperature
One of effective behave of degree, but distribution transformer temperature change is big, and changes frequently, in addition, for a long time, distribution transformer
Often circuit is simple for air-cooled facility, is unable to satisfy the fining requirement for adjusting and monitoring to temperature, and existing air-cooled facility is more
For hand-operated structures, the heavy workload of this manual switching structure, therefore the labor intensity of personnel is increased, and grasp manually
Often lag behind transformer temperature variation, it is easy to cause the danger that winding temperature is excessively high.It is pressed in time in addition, can not meet
According to the accurate requirement for implementing switching transformer cooling system, and it cannot achieve and throw to possessing the air-cooled facility of high-volume distribution transformer
The control and monitoring work cut.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of pair of transformers to carry out real time temperature monitoring, temperature control essence
True agricultural machinery plant area transformer station high-voltage side bus temperature control device.
In order to solve the above technical problems, the technical solution of the utility model is: agricultural machinery plant area is filled with transformer station high-voltage side bus temperature control
It sets, including air-blower control circuit and fan monitoring unit,
The air-blower control circuit includes the three-phase power line being correspondingly connected with distribution transformer, the three phase supply line
Road is connected with chopper switch ZK, is connected with relay KM's on the three-phase power line of the chopper switch ZK outlet side
Fuse is connected on the three-phase power line of the normally opened contact KM-1 outgoing line side of normally opened contact KM-1, the relay KM
FR, the outgoing line side of the fuse FR are connected with refrigeration fan M, and appointing for the three-phase power line is connected between two lines road
Temperature control loop, the temperature control loop are set between the chopper switch ZK and the normally opened contact KM-1 of the relay KM；
The fan monitoring unit includes the temperature sensor connecting with the distribution transformer, the temperature sensor
Signal output end is connected with analog signal input module, and the output end of the analog signal input module is connected with primary processor,
The output end of the primary processor is connected with display and control module, cold control signal output driving module and at least one system in turn
The output end of cold-information output driving module, the cold control signal output driving module has been correspondingly connected with fan control module, institute
Refrigeration information output driving module is stated to be connected to by information carrying means set on long-range master station.
The temperature control loop includes connecting with a wherein route for the three-phase power line as a preferred technical solution,
The output end of the unidirectional fuse RD1 connect, the unidirectional fuse RD1 are connected to the first contact of change-over switch, with described turn
Opposite the second contact for being equipped with change-over switch of the first contact of switch is changed, the output end of the second contact of the change-over switch is successively
It is serially connected with the coil of electrothermal relay KM, the normally-closed contact FR-1 of fuse and unidirectional fuse RD2, the unidirectional fuse RD2
The other end be connected to any one in the three-phase power line two other route；
The output end of the unidirectional fuse RD1 is additionally coupled to the third contact of change-over switch, with the change-over switch
Opposite the 4th contact for being equipped with change-over switch of third contact, the 4th contact of the change-over switch are serially connected with intermediate relay KA's
Normally opened contact KA-1, the output end of the normally opened contact KA-1 of the intermediate relay KA are connected to the coil of the electrothermal relay KM
Input terminal；
4th contact of the change-over switch is also connected with temperature controller WJ1, the output end of the temperature controller WJ1
The normally opened contact KA-2 output end for being connected with the normally opened contact KA-2, the intermediate relay KA of intermediate relay KA is connected with
Between relay KA coil, the output end of the coil of the intermediate relay KA is connected to the defeated of the coil of the electrothermal relay KM
Outlet；
4th contact of the change-over switch is also connected with temperature controller WJ2, the output end of the temperature controller WJ2
It is connected to the input terminal of the coil of the intermediate relay KA.
The set temperature of the temperature controller WJ1 is 45 ° as a preferred technical solution,；The temperature controller WJ2
Set temperature be 55 °.
As a preferred technical solution, the primary processor include CY8C27x chip, A/D conversion module, transmission lead,
Multiplexer, amplifier, the input terminal of the A/D conversion module are connect with the analog signal input module.
The fan control module includes blower start-up and shut-down control device, fan trouble alarm as a preferred technical solution,
Device, blower excess temperature alarm device and blower overtemperature tripgear.
The information carrying means includes connecting with the refrigeration information output driving module as a preferred technical solution,
RS-485 communication interface, the output end of the RS-485 communication interface is connected with state-signal collection module, the state-signal collection mould
Block is connected to the master station by wireless communication module.
The wireless communication module includes GPRS wireless network, cdma wireless network or GSM as a preferred technical solution,
Wireless network.
As improvement to above-mentioned technical proposal, the display and control module and the master station are respectively included accordingly
Processor, hard disk, memory and system bus.
By adopting the above-described technical solution, the beneficial effects of the utility model are: being opened by different thermal contacts
Dynamic or stopping electrothermal relay KM leads to so that the power supply of turn on automatically or disconnected refrigeration fan M, realizes the automatic switching of refrigeration fan M
It crosses and realizes control loop short circuit, overload protection with fuse, electrothermal relay, prevent transformer refrigeration fan M from damaging because of overheat,
Fan monitoring unit is by temperature sensor, to distribution transformer real-time perfoming temperature display and control, air-cooled operation or air-cooled
Disappearance of signal is sent to master station, monitors that air-cooled state provides convenience for operations staff, it is ensured that the safety of distribution system
Stable operation.
Detailed description of the invention
Following drawings are only intended to schematically illustrate and explain the present invention, does not limit the model of the utility model
It encloses.Wherein:
Fig. 1 is the circuit diagram in the utility model embodiment air-blower control circuit；
Fig. 2 is the structural block diagram of the utility model embodiment fan monitoring unit.
Specific embodiment
With reference to the accompanying drawings and examples, the utility model is further described.In the following detailed description, only pass through
Bright mode describes certain exemplary embodiments of the utility model.Undoubtedly, those skilled in the art can be with
It recognizes, it, can be with a variety of different modes to described without departing from the spirit and scope of the utility model
Embodiment is modified.Therefore, attached drawing and description are regarded as illustrative in nature, rather than the protection for limiting claim
Range.
As depicted in figs. 1 and 2, agricultural machinery plant area transformer station high-voltage side bus temperature control device, including air-blower control circuit and blower prison
Unit is controlled, the air-blower control circuit includes the three-phase power line being correspondingly connected with distribution transformer, the three phase supply line
Road is connected with chopper switch ZK, is connected with relay KM's on the three-phase power line of the chopper switch ZK outlet side
Fuse is connected on the three-phase power line of the normally opened contact KM-1 outgoing line side of normally opened contact KM-1, the relay KM
FR, the outgoing line side of the fuse FR are connected with refrigeration fan M, and appointing for the three-phase power line is connected between two lines road
Temperature control loop, the temperature control loop are set between the chopper switch ZK and the normally opened contact KM-1 of the relay KM.
The temperature control loop includes the unidirectional fuse RD1 with a wherein connection for the three-phase power line,
The output end of the unidirectional fuse RD1 is connected to the first contact of change-over switch, the first contact phase with the change-over switch
To the second contact for being equipped with change-over switch, the output end of the second contact of the change-over switch is sequentially connected in series electrothermal relay KM's
The normally-closed contact FR-1 and unidirectional fuse RD2 of coil, fuse, the other end of the unidirectional fuse RD2 are connected to described
Any one in three-phase power line two other route；The output end of the unidirectional fuse RD1 is additionally coupled to conversion and opens
The third contact of pass, the 4th contact for being equipped with change-over switch opposite with the third contact of the change-over switch, the change-over switch
The 4th contact be serially connected with the normally opened contact KA-1 of intermediate relay KA, the normally opened contact KA-1's of the intermediate relay KA is defeated
Outlet is connected to the coil input end of the electrothermal relay KM；4th contact of the change-over switch is also connected with temperature controller
WJ1, the output end of the temperature controller WJ1 are connected with the normally opened contact KA-2 of intermediate relay KA, the intermediate relay
The normally opened contact KA-2 output end of KA is connected with the coil of intermediate relay KA, the output end of the coil of the intermediate relay KA
It is connected to the output end of the coil of the electrothermal relay KM；4th contact of the change-over switch is also connected with temperature controller
WJ2, the output end of the temperature controller WJ2 are connected to the input terminal of the coil of the intermediate relay KA.The temperature control
The set temperature of device WJ1 processed is 45 °；The set temperature of the temperature controller WJ2 is 55 °.
The fan monitoring unit includes the temperature sensor connecting with the distribution transformer, the temperature sensor
Signal output end is connected with analog signal input module, and the output end of the analog signal input module is connected with primary processor,
The output end of the primary processor is connected with display and control module, cold control signal output driving module and at least one system in turn
The output end of cold-information output driving module, the cold control signal output driving module has been correspondingly connected with fan control module, institute
Refrigeration information output driving module is stated to be connected to by information carrying means set on long-range master station.
Wherein, the primary processor includes CY8C27x chip, A/D conversion module, transmission lead, multiplexer, amplification
Device, the input terminal of the A/D conversion module are connect with the analog signal input module.The fan control module includes blower
Start-up and shut-down control device, fan trouble warning device, blower excess temperature alarm device and blower overtemperature tripgear.The blower start and stop
Control device can realize by the way that corresponding contactor or switching input module is arranged, the fan trouble warning device and
Corresponding sensor, alarm lamp or alarming horn can be respectively set to realize in the blower excess temperature alarm device, the blower
Overtemperature tripgear can cooperate sensor and relay to complete, the specific structure of each part mentioned above and the analog signal
For in the art described in input module, the cold control signal output driving module and the refrigeration information output driving module
Content known to those of ordinary skill, is no longer described in detail herein.
The information carrying means includes the RS-485 communication interface connecting with the refrigeration information output driving module, institute
The output end for stating RS-485 communication interface is connected with state-signal collection module, and the state-signal collection module is connected by wireless communication module
It is connected to the master station.The wireless communication module includes GPRS wireless network, cdma wireless network or gsm wireless network.
The display and control module and the master station respectively include corresponding processor, hard disk, memory and system bus.This reality
Real time monitoring while multiple distribution transformers can be completed by applying example.
In this embodiment, the corresponding temperature sensor of each distribution transformer selects platinum resistance respectively
Pt100 samples the distribution transformer temperature, and gained electric signal is amplified with after AD conversion, transfers at primary processor
Reason realizes temperature display, and compared with set temperature, output controls signal and carries out the movements such as air-blower control, alarm tripping, simultaneously
It realizes and is transmitted with the data of master station.8 programmable system on chip of CYPRESS company, group can be used in CY8C27x chip
It is real SCM system comprising more than 100 reconfigurable analog- and digital- library elements in part.The AD core of A/D conversion module
Piece selects the MCP3204 of Microchip company production, and DA chip is using the production of Texas Instruments company
TLC5620, RS-485 communication part use the Max485 of Maxim company production, and core can be used in the state-signal collection module
Piece LM324 amplifies as signal, using LM7812, L7805 as three terminal regulator.
The course of work of the present embodiment is as described below:
1. the temperature nodes of distribution transformer temperature controller setting are selected, (45 when distribution transformer oil temperature reaches 55 DEG C
DEG C contact is closed), the coil motion of the intermediate relay KA, the normally opened contact KA-1 of intermediate relay KA and it is intermediate after
Two normal opened contact closures of normally opened contact KA-2 of electric appliance KA, wherein the normally opened contact KA-2 of intermediate relay KA is to the centre
The normally opened contact KA-1 of the coil self-sustaining of relay KA, intermediate relay KA is connected and is kept to the coil of electrothermal relay KM,
It is high when oil temperature is lower than 55 DEG C after normally opened contact KM-1 loop start refrigeration fan M, refrigeration fan the M starting of relay KM
When 45 DEG C, 45 DEG C of temperature controller is always maintained at refrigeration fan M operation.When oil temperature is lower than 45 DEG C, 45 DEG C of temperature control
Device processed disconnects, and the coil losing electricity of intermediate relay KA, two normal opened contacts return to normal (open position), the line of electrothermal relay KM
Power loss is enclosed, refrigeration fan M stops, and change-over switch can choose automatic, manual, stopping.
2., even if refrigeration fan M has turned on, temperature may also continue to increase when distribution transformer institute on-load is larger
It has been more than 65 DEG C, the alarm temperature node that we are set by selection temperature controller at this time, when temperature of oil in transformer has reached 65
DEG C when, issue alarm signal, such operations staff can carry out load down in time, or the spare distribution transformer that puts into operation, it is ensured that
The safe operation of distribution transformer.
3. it will cause air cooling system full cut-off when the failures such as short circuit, open circuit, phase shortage, decompression occurs in air-blower control circuit, and
Pre-warning signal cannot be started and inform operations staff, cause to seriously endanger to distribution transformer.For this defect, can by heat after
The normally opened contact and normally closed contact of electric appliance KM is connect with primary processor signal, by air-cooled operation or air-cooled disappearance of signal report to master control
Room backstage, enables operating status of the operations staff in background monitoring to refrigeration fan M.As long as the coil motion of electrothermal relay KM
(manually or oil temperature is more than 55 DEG C), normal opened contact is just closed, and thus operations staff learns " air-cooled operation ".Work as distribution transformer
When temperature is lower than 45 DEG C, air-cooled phase shortage, control loop open circuit or main power source decompression, normally closed auxiliary node resets, and informs operation
Personnel's " air-cooled disappearance ", enable operations staff to grasp air cooling system operating status in time, provide convenience to operations staff, it is ensured that
The reliability of air cooling system.
4. the temperature sensor of example by transmission lead receive external three winding temperature signals of distribution transformer and
Environmental signal, benefit simultaneously convert a signal into voltage signal output, and ternary can be used in transmission lead, its advantage is that can reduce
Cause measurement error because connecting wire resistance value changes.The fan monitoring unit of each distribution transformer be used as subsystem and
It is independently operated, master station system by insertion ModBus agreement, further improve the reliability of data communication with it is compatible
Property, it at most may be implemented to monitor 32 station power distribution transformers in real time, can also be arranged built in one in wireless communication module
SIM card, and GPRS function is opened, it communicates more convenient.
The utility model starts or stops electrothermal relay KM by different thermal contacts, thus turn on automatically or disconnected system
The power supply of air-cooler M, realize refrigeration fan M automatic switching, by with fuse, electrothermal relay realize control loop short circuit,
Overload protection prevents refrigeration fan M from damaging because of overheat, and fan monitoring unit is by temperature sensor, to distribution transformer reality
Shi Jinhang temperature display and control, air-cooled operation or air-cooled disappearance of signal are sent to master station, monitor for operations staff air-cooled
State provides convenience, it is ensured that the safe and stable operation of distribution system not only increases the reliable of air-blower control circuit operation
Property, its also perfect self-starting function, and it is simple to improve principle is invested small, monitors that air-blower control circuit mentions for operations staff
Convenience is supplied, it is ensured that the safe and stable operation of system.
The advantages of basic principles and main features and the utility model of the utility model have been shown and described above.Current row
The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments
Only illustrate the principles of the present invention, on the premise of not departing from the spirit and scope of the utility model, the utility model is also
It will have various changes and improvements, these various changes and improvements fall within the scope of the claimed invention.The utility model
Claimed range is defined by the appending claims and its equivalent thereof.
Claims (8)
1. agricultural machinery plant area transformer station high-voltage side bus temperature control device, it is characterised in that: including air-blower control circuit and fan monitoring unit,
The air-blower control circuit includes the three-phase power line being correspondingly connected with distribution transformer, on the three-phase power line
It is connected with chopper switch ZK, is connected with the normally opened of relay KM on the three-phase power line of the chopper switch ZK outlet side
It is connected with fuse FR on the three-phase power line of the normally opened contact KM-1 outgoing line side of contact KM-1, the relay KM,
The outgoing line side of the fuse FR is connected with refrigeration fan M, and appointing for the three-phase power line is connected with temperature between two lines road
Circuit is controlled, the temperature control loop is set between the chopper switch ZK and the normally opened contact KM-1 of the relay KM；
The fan monitoring unit includes the temperature sensor connecting with the distribution transformer, the signal of the temperature sensor
Output end is connected with analog signal input module, and the output end of the analog signal input module is connected with primary processor, described
The output end of primary processor is connected with display and control module, cold control signal output driving module and at least one refrigeration letter in turn
Output driving module is ceased, the output end of the cold control signal output driving module has been correspondingly connected with fan control module, the system
Cold-information output driving module is connected to by information carrying means set on long-range master station.
2. agricultural machinery plant area transformer station high-voltage side bus temperature control device as described in claim 1, it is characterised in that: the temperature control loop packet
Include the unidirectional fuse RD1 with a wherein connection for the three-phase power line, the output of the unidirectional fuse RD1
End is connected to the first contact of change-over switch, the second touching for being equipped with change-over switch opposite with the first contact of the change-over switch
The output end of head, the second contact of the change-over switch is sequentially connected in series the normally-closed contact of the coil of electrothermal relay KM, fuse
The other end of FR-1 and unidirectional fuse RD2, the unidirectional fuse RD2 are connected to the three-phase power line two other line
Any one in road；
The output end of the unidirectional fuse RD1 is additionally coupled to the third contact of change-over switch, the third with the change-over switch
Opposite the 4th contact for being equipped with change-over switch of contact, the 4th contact of the change-over switch are serially connected with the normally opened of intermediate relay KA
Contact KA-1, the output end of the normally opened contact KA-1 of the intermediate relay KA are connected to the coil input of the electrothermal relay KM
End；
4th contact of the change-over switch is also connected with temperature controller WJ1, the output end connection of the temperature controller WJ1
Have the normally opened contact KA-2 output end of the normally opened contact KA-2, the intermediate relay KA of intermediate relay KA be connected with it is intermediate after
The coil of electric appliance KA, the output end of the coil of the intermediate relay KA are connected to the output of the coil of the electrothermal relay KM
End；
4th contact of the change-over switch is also connected with temperature controller WJ2, the output end connection of the temperature controller WJ2
To the input terminal of the coil of the intermediate relay KA.
3. agricultural machinery plant area transformer station high-voltage side bus temperature control device as claimed in claim 2, it is characterised in that: the temperature controller
The set temperature of WJ1 is 45 °；The set temperature of the temperature controller WJ2 is 55 °.
4. agricultural machinery plant area transformer station high-voltage side bus temperature control device as described in claim 1, it is characterised in that: the primary processor packet
Include CY8C27x chip, A/D conversion module, transmission lead, multiplexer, amplifier, the input terminal of the A/D conversion module
It is connect with the analog signal input module.
5. agricultural machinery plant area transformer station high-voltage side bus temperature control device as claimed in claim 2, it is characterised in that: the air-blower control mould
Block includes blower start-up and shut-down control device, fan trouble warning device, blower excess temperature alarm device and blower overtemperature tripgear.
6. agricultural machinery plant area transformer station high-voltage side bus temperature control device as claimed in claim 5, it is characterised in that: the information transmission dress
Set the RS-485 communication interface including connecting with the refrigeration information output driving module, the output of the RS-485 communication interface
End is connected with state-signal collection module, and the state-signal collection module is connected to the master station by wireless communication module.
7. agricultural machinery plant area transformer station high-voltage side bus temperature control device as claimed in claim 6, it is characterised in that: the wireless telecommunications mould
Block includes GPRS wireless network, cdma wireless network or gsm wireless network.
8. the agricultural machinery plant area transformer station high-voltage side bus temperature control device as described in claim 5,6 or 7, it is characterised in that: the display
And control module and the master station respectively include corresponding processor, hard disk, memory and system bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821226700.2U CN208384440U (en) | 2018-08-01 | 2018-08-01 | Agricultural machinery plant area transformer station high-voltage side bus temperature control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821226700.2U CN208384440U (en) | 2018-08-01 | 2018-08-01 | Agricultural machinery plant area transformer station high-voltage side bus temperature control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208384440U true CN208384440U (en) | 2019-01-15 |
Family
ID=64961342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821226700.2U Expired - Fee Related CN208384440U (en) | 2018-08-01 | 2018-08-01 | Agricultural machinery plant area transformer station high-voltage side bus temperature control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208384440U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109786090A (en) * | 2019-02-26 | 2019-05-21 | 山东钢铁股份有限公司 | Transformer cooling fan control circuit and method |
| CN110706892A (en) * | 2019-10-10 | 2020-01-17 | 国网黑龙江省电力有限公司电力科学研究院 | Transformer cooling system capable of realizing state self-holding function |
-
2018
- 2018-08-01 CN CN201821226700.2U patent/CN208384440U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109786090A (en) * | 2019-02-26 | 2019-05-21 | 山东钢铁股份有限公司 | Transformer cooling fan control circuit and method |
| CN110706892A (en) * | 2019-10-10 | 2020-01-17 | 国网黑龙江省电力有限公司电力科学研究院 | Transformer cooling system capable of realizing state self-holding function |
| CN110706892B (en) * | 2019-10-10 | 2022-12-30 | 国网黑龙江省电力有限公司电力科学研究院 | Transformer cooling system capable of realizing state self-holding function |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190115 Termination date: 20200801 |
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| CF01 | Termination of patent right due to non-payment of annual fee |