CN208674963U - A kind of intelligent load system preventing electric dynamometer to the anti-power transmission of power grid - Google Patents
A kind of intelligent load system preventing electric dynamometer to the anti-power transmission of power grid Download PDFInfo
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- CN208674963U CN208674963U CN201821214574.9U CN201821214574U CN208674963U CN 208674963 U CN208674963 U CN 208674963U CN 201821214574 U CN201821214574 U CN 201821214574U CN 208674963 U CN208674963 U CN 208674963U
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- cabinet
- control unit
- load
- power grid
- line cabinet
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Abstract
The utility model relates to electromechanical testing fields, especially a kind of intelligent load system for preventing electric dynamometer to the anti-power transmission of power grid, incoming line cabinet in intelligent load system takes electricity from power grid and powers to outgoing line cabinet, outgoing line cabinet is operated to motor power supply to be tested with driving motor, electric dynamometer is connected on the rotor of motor to which the kinetic energy for generating motor rotation is converted to electric energy, the electric energy sends incoming line cabinet back to through feeder cabinet is counter, after software engineer is to the control unit programming of the hardware configuration of intelligent load system, the first current transformer in load cabinet acquires total input current of outgoing line cabinet to control unit in real time, what the second current transformer acquired feeder cabinet in real time exports electric current to control unit, control unit automatically controls resistance unit according to the difference of the two electric currents and carries out loading/off-load, using resistance unit by electric dynamometer institute Generate power consumption more than needed fall, avoid caused by electric dynamometer have more than needed electric energy given to power grid is counter.
Description
Technical field
The utility model relates to electromechanical testing field, especially a kind of intelligence for preventing electric dynamometer to the anti-power transmission of power grid
Load system.
Background technique
The factory of general production generator, engine or the motors such as electronic, needs to test each of motor before product export
Item performance parameter.Motor when tested, rotor rotation work done be largely wasted, expend a large amount of electric power at
This.In order to improve such case, a part of factory uses electric dynamometer, and motor, generated function is converted into when tested
Electric energy, then by the anti-distribution network given in factory of electric energy.However, such measure is taken, although reducing electric power resource
Waste, but if the anti-electric energy for giving distribution network of electric dynamometer is greater than electric energy consumed by motor, distribution network
Electric energy counter will send power grid (distribution network in factory takes electricity from power grid) back to, thus to power grid power supply bring serious safety
It threatens, even results in electric network pollution.
Utility model content
The utility model is to improve shortcoming in the prior art, and provide a kind of hardware knot of intelligent load system
Structure, after software engineer in the hardware configuration control unit programming after, intelligent load system can prevent electric dynamometer to
The anti-power transmission of power grid.
For this purpose, a kind of intelligent load system for preventing electric dynamometer to the anti-power transmission of power grid, including incoming line cabinet, outgoing line cabinet,
Feeder cabinet and electric dynamometer, incoming line cabinet take electricity from power grid and give outgoing line cabinet power supply, outgoing line cabinet to motor power supply to be tested with
Driving motor operating, electric dynamometer are connected on the rotor of motor to which the kinetic energy for generating motor rotation is converted to electric energy,
The electric energy sends incoming line cabinet back to through feeder cabinet is counter, further includes the load cabinet that electricity is taken from incoming line cabinet, and load cabinet is equipped with for acquiring out
First current transformer of the total input current of line cabinet, for acquire feeder cabinet output electric current the second current transformer, have it is more
The resistance unit of grade resistance gear and load for controlling resistance unit/the control unit of off-load, the first current transformer,
Second current transformer, resistance unit are electrically connected control unit.
Wherein, it is connected between incoming line cabinet and outgoing line cabinet by bus cable, the first current transformer specifically acquires bus cable
Electric current, outgoing line cabinet has a plurality of output branch, so that multiple electric motors be driven to operate.
Wherein, the resistance unit is specifically alloy fled rheostat array, each of alloy fled rheostat array resistor
It is in series with a contactor, control unit controls the conduction and cut-off of each contactor respectively to realize alloy fled rheostat battle array
Load/off-load of column.
Wherein, the blower that load cabinet is additionally provided with as the cooling of alloy fled rheostat array, blower are electrically connected with control unit.
Wherein, the air outlet of blower is equipped with wind pressure detector to acquire wind pressure to control unit.
It wherein, further include host computer, host computer is carried out telecommunication with the control unit in load cabinet.
Wherein, host computer specifically uses RS485 to be communicated with the control unit in load cabinet.
Wherein, load cabinet is additionally provided with the smoke detector and temperature detector of alignment resistance unit setting, smoke detector
The corresponding data of resistance unit is acquired respectively with temperature detector to control unit, it is supreme that control unit uploads the corresponding data
Position machine.
Wherein, control unit is specifically PLC controller.
It wherein, further include accessory power supply, the control unit in load cabinet takes electricity from accessory power supply.
The utility model has the advantages that
In the intelligent load system of the utility model, incoming line cabinet takes electricity from power grid and powers to outgoing line cabinet, and outgoing line cabinet is given
Motor power supply to be tested is operated with driving motor, and electric dynamometer is connected on the rotor of motor to rotate motor and generate
Kinetic energy be converted to electric energy, which sends incoming line cabinet back to through feeder cabinet is counter, to software engineer to the hardware of intelligent load system
After the control unit programming of structure, the first current transformer in load cabinet acquires total input current of outgoing line cabinet to control in real time
Unit, what the second current transformer acquired feeder cabinet in real time exports electric current to control unit, and control unit is according to the two electric currents
Difference automatically control resistance unit carry out loading/off-load, using resistance unit by caused by electric dynamometer have more than needed electric energy
Consume, avoid caused by electric dynamometer have more than needed electric energy given to power grid is counter, reach distribution between incoming line cabinet and outgoing line cabinet
Dynamic equilibrium enhances the stability of incoming line cabinet and outgoing line cabinet distribution.
Detailed description of the invention
Using attached drawing, the utility model is described in further detail, but the embodiment in attached drawing is not constituted to the utility model
Any restrictions for those of ordinary skill in the art without creative efforts, can also be according to following attached
Figure obtains other attached drawings.
Fig. 1 is the system block diagram of intelligent load system.
Fig. 2 is the system block diagram of load cabinet.
Specific embodiment
The utility model is further described with the following Examples.
As depicted in figs. 1 and 2, intelligent load system includes incoming line cabinet 1, outgoing line cabinet 2, feeder cabinet 55, load cabinet 6 and electric power
Dynamometer machine 4, incoming line cabinet 1 are three-phase three-wire system, using 6.3KV inlet wire, take electricity from power grid, and by a bus cable to outgoing line cabinet
2 power supplies.To improve cable secure, bus cable specifically uses twisted-pair shielded wire.After outgoing line cabinet 2 takes electricity from bus cable, it is divided into a plurality of
Branch output is exported, each of them output branch can drive a motor 3 to operate, so that factory can test multiple electric motors simultaneously
3.An existing electric dynamometer 4, the kinetic energy that electric dynamometer 4 rotates motor 3 are respectively connected on the rotor of every motor 3
It is converted into electric energy.The electric energy that each electric dynamometer 4 is converted out is collected to jointly in feeder cabinet 55, and feeder cabinet 55 is through a cable
Electric energy foldback is returned into incoming line cabinet 1, uses the anti-electric energy sent back to by motor 3, to save electric power resource.
Load cabinet 6 also takes electricity from incoming line cabinet 1, is equipped in load cabinet 6 and (adopts for acquiring the total input current of outgoing line cabinet 2
Collect bus cable electric current) the first current transformer 61, for acquire feeder cabinet 55 export electric current the second current transformer 62,
Resistance unit 63 with multilevel resistance gear and load for controlling resistance unit 63/the PLC controller 60 of off-load,
One current transformer 61, the second current transformer 62, resistance unit 63 are electrically connected PLC controller 60.PLC is controlled when use
The difference for two electric currents that device 60 is acquired according to the first current transformer 61 and the second current transformer 62, passes through the calculation of setting
Method automatically controls resistance unit 63 and carries out loading/off-load, will be had more than needed caused by electric dynamometer 4 using resistance unit 63 electric
Can consume, avoid caused by electric dynamometer 4 have more than needed electric energy given to power grid is counter, make distribution between incoming line cabinet 1 and outgoing line cabinet 2
Reach dynamic equilibrium, enhances the stability of incoming line cabinet 1 and 2 distribution of outgoing line cabinet.
Further, resistance unit 63 selects alloy fled rheostat array 631 to make the smoothened mutability of load regulation process
And high pressure can be born, wherein each of alloy fled rheostat array 631 resistor is in series with a contactor 652, PLC control
Device 60 processed controls the conduction and cut-off of each contactor 652 respectively to realize load/off-load of alloy fled rheostat array 631.By
It is higher in alloy fled rheostat heat consumption efficiency, it is equipped with a Fans 64 to cool down in load cabinet 6 for alloy fled rheostat array 631,
Middle blower 64 is controlled by PLC controller 60.
A host computer 7 is additionally provided in intelligent load system, host computer 7 passes through with the PLC controller 60 in load cabinet 6
RS485 is carried out telecommunication, and staff can pass through the load condition in host computer 7 remotely adjustment load cabinet 6.Specifically, exist
A wind pressure detector 65 is arranged to acquire wind pressure to PLC controller 60 in the air outlet of blower 64, and load cabinet 6 is additionally provided with alignment electricity
Smoke detector 66 and temperature detector 67 that unit 63 is arranged are hindered, smoke detector 66 and temperature detector 67 acquire electricity respectively
The surrounding enviroment data (smokescope, temperature) of unit 63 are hindered to PLC controller 60, and PLC controller 60 is by smokescope, temperature
It is uploaded to host computer 7 in real time with wind pressure, staff is comprehensive to measure whether adjust 64 wind-force of blower by checking these three data
With resistor loaded situation, furthermore host computer 7 is by monitoring two smokescope, temperature data, once host computer 7 finds two numbers
According to any of be more than software set dangerous values, then from trend alert personnel, at the same it is automatic under send instructions so that
Load cabinet 6 is unloaded, incoming line cabinet 1 powers off, protection Factory Electricity Supply safety.
The accessory power supplys such as battery or capacitor energy, the PLC controller in load cabinet 6 are additionally provided in intelligent load system
60 independently take electricity from accessory power supply, avoid leading to 60 power down of PLC controller in load cabinet 6 since incoming line cabinet 1 powers off, make
At intelligent load systemic breakdown.
Finally it should be noted that above embodiments are only to illustrate the technical solution of the utility model, rather than to this reality
With the limitation of novel protected range, although being explained in detail referring to preferred embodiment to the utility model, this field it is general
Lead to it will be appreciated by the skilled person that can be with the technical solution of the present invention is modified or equivalently replaced, without departing from this
The spirit and scope of utility model technical solution.
Claims (10)
1. a kind of intelligent load system for preventing electric dynamometer to the anti-power transmission of power grid, it is characterized in that:
Including incoming line cabinet, outgoing line cabinet, feeder cabinet and electric dynamometer, incoming line cabinet takes electricity from power grid and powers to outgoing line cabinet, outlet
Cabinet is operated to motor power supply to be tested with driving motor, and electric dynamometer is connected on the rotor of motor to rotate in motor
The kinetic energy of generation is converted to electric energy, which sends incoming line cabinet back to through feeder cabinet is counter,
It further include the load cabinet that electricity is taken from incoming line cabinet, load cabinet is equipped with the first electric current for acquiring the total input current of outgoing line cabinet
Mutual inductor, the second current transformer, resistance unit and use with multilevel resistance gear for acquiring feeder cabinet output electric current
Load/the control unit of off-load, the first current transformer, the second current transformer, resistance unit in control resistance unit
It is electrically connected control unit.
2. according to claim a kind prevents electric dynamometer to the intelligent load system of the anti-power transmission of power grid, it is characterized in that:
It is connected between incoming line cabinet and outgoing line cabinet by bus cable, the first current transformer specifically acquires the electric current of bus cable, outgoing line cabinet tool
There is a plurality of output branch, so that multiple electric motors be driven to operate.
3. according to claim a kind prevents electric dynamometer to the intelligent load system of the anti-power transmission of power grid, it is characterized in that:
The resistance unit is specifically alloy fled rheostat array, and each of alloy fled rheostat array resistor is in series with one and connects
Tentaculum, control unit control the conduction and cut-off of each contactor respectively to realize load/off-load of alloy fled rheostat array.
4. according to claim 3 kind prevents electric dynamometer to the intelligent load system of the anti-power transmission of power grid, it is characterized in that:
The blower that load cabinet is additionally provided with as the cooling of alloy fled rheostat array, blower are electrically connected with control unit.
5. according to claim 4 kind prevents electric dynamometer to the intelligent load system of the anti-power transmission of power grid, it is characterized in that:
The air outlet of blower is equipped with wind pressure detector to acquire wind pressure to control unit.
6. according to claim a kind prevents electric dynamometer to the intelligent load system of the anti-power transmission of power grid, it is characterized in that:
It further include host computer, host computer is carried out telecommunication with the control unit in load cabinet.
7. according to claim 6 kind prevents electric dynamometer to the intelligent load system of the anti-power transmission of power grid, it is characterized in that:
Host computer specifically uses RS485 to be communicated with the control unit in load cabinet.
8. according to claim 7 kind prevents electric dynamometer to the intelligent load system of the anti-power transmission of power grid, it is characterized in that:
Load cabinet is additionally provided with the smoke detector and temperature detector of alignment resistance unit setting, smoke detector and temperature detector point
Not Cai Ji resistance unit corresponding data to control unit, control unit uploads the corresponding data to host computer.
9. according to claim 1-8 kind prevents electric dynamometer to the intelligent load system of the anti-power transmission of power grid,
It is characterized in that: control unit is specifically PLC controller.
10. according to claim 1-8 kind prevents electric dynamometer to the intelligent load system of the anti-power transmission of power grid,
It is characterized in that: further including accessory power supply, the control unit in load cabinet takes electricity from accessory power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821214574.9U CN208674963U (en) | 2018-07-28 | 2018-07-28 | A kind of intelligent load system preventing electric dynamometer to the anti-power transmission of power grid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821214574.9U CN208674963U (en) | 2018-07-28 | 2018-07-28 | A kind of intelligent load system preventing electric dynamometer to the anti-power transmission of power grid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208674963U true CN208674963U (en) | 2019-03-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821214574.9U Active CN208674963U (en) | 2018-07-28 | 2018-07-28 | A kind of intelligent load system preventing electric dynamometer to the anti-power transmission of power grid |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110649700A (en) * | 2019-10-15 | 2020-01-03 | 深圳市高斯宝电气技术有限公司 | Method for preventing user circuit from reversely transmitting power to power grid |
| CN110988775A (en) * | 2019-12-26 | 2020-04-10 | 宝鸡文理学院 | Anti-reverse power transmission calibration device for electric dynamometer |
| CN110649700B (en) * | 2019-10-15 | 2024-05-17 | 深圳市高斯宝电气技术有限公司 | Method for preventing user circuit from reversely transmitting power to power grid |
-
2018
- 2018-07-28 CN CN201821214574.9U patent/CN208674963U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110649700A (en) * | 2019-10-15 | 2020-01-03 | 深圳市高斯宝电气技术有限公司 | Method for preventing user circuit from reversely transmitting power to power grid |
| CN110649700B (en) * | 2019-10-15 | 2024-05-17 | 深圳市高斯宝电气技术有限公司 | Method for preventing user circuit from reversely transmitting power to power grid |
| CN110988775A (en) * | 2019-12-26 | 2020-04-10 | 宝鸡文理学院 | Anti-reverse power transmission calibration device for electric dynamometer |
| CN110988775B (en) * | 2019-12-26 | 2022-07-12 | 宝鸡文理学院 | Anti-reverse power transmission calibration device for electric dynamometer |
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