CN207396642U - A kind of experiment porch verified cable bearer eddy-current loss and calculate accuracy - Google Patents
A kind of experiment porch verified cable bearer eddy-current loss and calculate accuracy Download PDFInfo
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- CN207396642U CN207396642U CN201721591267.8U CN201721591267U CN207396642U CN 207396642 U CN207396642 U CN 207396642U CN 201721591267 U CN201721591267 U CN 201721591267U CN 207396642 U CN207396642 U CN 207396642U
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Abstract
A kind of experiment porch verified cable bearer eddy-current loss and calculate accuracy, including enclosed housing, cable, rising current transformer, pressure regulator, switchgear, thermocouple temperature measurement module, current transformer, display, compensating electric capacity.The cable sequentially passes through one circuit of connection formation after rising current transformer, current transformer after enclosed housing is pierced by.The switchgear input terminal connects power supply, and switchgear output terminal connects compensating electric capacity, display respectively.The pressure regulator input terminal is connected with compensating electric capacity, and output voltage regulator is connected with rising current transformer.The current transformer, thermocouple temperature measurement module output terminal are connected to display.A kind of experiment porch verified cable bearer eddy-current loss and calculate accuracy of the utility model can verify the correctness of eddy-current loss result on FEM calculation stent, more convenient effective using verification mode after the platform.
Description
Technical field
The utility model is related to a kind of dynamic simulation tester, more particularly to a kind of verification cable bearer eddy-current loss
Calculate the experiment porch of accuracy.
Background technology
Under AC great current effect, the magnetic conductivity of stent can generate the magnetic field around cable very important influence.
Long-term cable operating experience shows that common steel bracket eddy-current loss cannot be ignored.The method generally used at present is using limited
Meta software carries out cable support system vortex simulation and calculates, and cable support system is modeled with finite element software, it was demonstrated that
Simultaneously occurrence is obtained in the presence of loss, but the confidence level of result is by querying.Stent eddy-current loss necessarily has heat dissipation, passes through
The method for surveying cable bearer temperature devises a kind of experiment porch verified cable bearer eddy-current loss and calculate accuracy, to test
Demonstrate,prove the correctness of finite element method.
The content of the invention
Technical problem to be solved in the utility model is a kind of reality verified cable bearer eddy-current loss and calculate accuracy
Platform is tested, can verify the correctness of eddy-current loss result on FEM calculation stent, using verification mode after the platform more
It is convenient effective.
The technical solution that the utility model is taken is：
A kind of experiment porch verified cable bearer eddy-current loss and calculate accuracy, including enclosed housing, switchgear, electricity
Cable, rising current transformer, pressure regulator, thermocouple temperature measurement module, current transformer, display, compensating electric capacity.The cable is from closing
After formula babinet is pierced by, one circuit of connection formation after rising current transformer, current transformer is sequentially passed through.
The switchgear input terminal connects power supply, and switchgear output terminal connects compensating electric capacity, display respectively.
The pressure regulator input terminal is connected with compensating electric capacity, and output voltage regulator is connected with rising current transformer.
The current transformer, thermocouple temperature measurement module output terminal are connected to display.
The enclosed housing is wooden case, and cable bearer is fixed on wooden case middle part, two are worn at left and right sides of wooden case
The circular hole more bigger than cable, cable are passed through from circular hole, and cable is in the surface of the lowest level cross-arm of cable bearer.
The cable bearer is using Q235 material cable beareves.
The rising current transformer is used to adjust the electrical current of cable, and rising current transformer employs three, and cable is from three
It is passed through in rising current transformer.
The pressure regulator, for adjusting the voltage of cable.
The thermocouple temperature measurement module is four, is separately fixed at：Closed enclosure contacts in vitro with air, cable conductor
Immediately below place, cable and on the cross-arm of surface.
The current data of acquisition is passed to display by the current transformer for gathering the size of current that cable flows through.
A kind of experiment porch verified cable bearer eddy-current loss and calculate accuracy of the utility model, technique effect are as follows：
1st, enclosed housing is wooden case, is capable of the laying state of dummycable tunnel transmission line of electricity, constructs a nature
Convection environment.
2nd, the eddy-current loss on cable bearer is obtained by measuring the progress inverting of the temperature on cable bearer, with finite element meter
The result of calculation is compared, and can verify the correctness of result of finite element.It can be compared herein by indirect comparison temperature
Compared with eddy-current loss to verify the correctness of result of finite element.
3rd, using the utility model experiment porch, it can be that verification cable bearer eddy-current loss calculates accuracy, provide one
Convenient effective means.
Description of the drawings
Fig. 1 is the structure diagram of the utility model platform.
Fig. 2 is the utility model enclosed housing internal structure schematic diagram.
Fig. 3 is the work flow diagram of the utility model platform.
Specific embodiment
As shown in Fig. 1 ~ 3, a kind of experiment porch verified cable bearer eddy-current loss and calculate accuracy, including closed enclosure
Body 1, switchgear 2, cable 3, rising current transformer 5, pressure regulator 6, thermocouple temperature measurement module 8, current transformer 9, display 10, benefit
Repay capacitance 7.
The cable 3 connects shape after enclosed housing 1 is pierced by after sequentially passing through rising current transformer 5, current transformer 9
Into a circuit.
2 input terminal of switchgear connects power supply, and 2 output terminal of switchgear connects compensating electric capacity 7, display 10 respectively.
6 input terminal of pressure regulator is connected with compensating electric capacity 7, and 6 output terminal of pressure regulator is connected with rising current transformer 5.
The current transformer 9,8 output terminal of thermocouple temperature measurement module are connected to display 10.
The enclosed housing 1 is wooden case, and cable bearer 4 is fixed on wooden case middle part, two are worn at left and right sides of wooden case
A circular hole more bigger than cable 3, cable 3 are passed through from circular hole, cable 3 be in the lowest level cross-arm 4.1 of cable bearer 4 just on
Side.
The enclosed housing 1 is rectangular, a length of 2.4 meters, and width is 0.8 meter, and a height of 1.2 meters, plank thickness is 0.02 meter,
For the laying state of dummycable tunnel transmission line of electricity, a free convection environment is constructed, makes experiment porch closer to work
Journey environment.
The cable bearer 4 is fixed on inside wooden case, using Q235 material cable beareves.What Q was represented is this material
The yield limit of matter, below 235, just refer to the yield value of this material, in 235MPa or so.It and can be with the thickness of material
Increase and make its yield value reduce, due to carbon containing moderate, comprehensive performance is preferable, the performances such as intensity, plasticity and welding obtain compared with
Good cooperation, strut length are 1.15 meters, and width is 0.1 meter, and thickness is 0.005 meter, and lower floor's cross-arm length is 0.7 meter, and width is
0.1 meter, thickness is 0.005 meter, and top layer cross-arm length is that 0.5 meter of width is 0.1 meter, and thickness is 0.005 meter.Lowest level cross-arm away from
Wooden case bottom level is 0.28 meter, and the interval of the second layer and first layer is 0.3 meter, and third layer and second layer interval are 0.3 meter, the
Four layers and third layer spacing are 0.187 meter.
The rising current transformer 5 is used to adjust the electrical current of cable 3, can the electric current on cable 3 be transferred to desired value.
In order to meet the needs of experiment, using three rising current transformers 5, cable 3 is passed through from three rising current transformers, and single up-flow becomes
The maximum up-flow value of depressor 5 is 700A.
The pressure regulator 6, for adjusting the voltage of cable 3.
The switchgear 2 is connected to form controlling brancher, for controlling, protecting inspection by pressure regulator 6 and rising current transformer 5
Experiment device.
The thermocouple temperature measurement module 8 is four, is separately fixed at：It is contacted outside enclosed housing 1 with air, cable conductor
Immediately below place, cable 3 and on the cross-arm of surface.The method for taking multiple spot detection carries out multiple spot comparison, makes confirmatory experiment number
According to more convincing.
The thermocouple temperature measurement module 8 uses PT100 film platinum resistance thermometer sensor,s, model CRZ1632-100A.Size 2.3mm
× 2.1mm × 0.9mm, precision are ± 0.15 DEG C.The method for taking multiple spot detection, carrying out multiple spot relatively makes confirmatory experiment platform
It is more convincing.Cable conductor temperature, cable surface and the temperature outside underface support cross-arm temperature, wooden case are gathered respectively
Degree.
The current data of acquisition is passed to display by the current transformer 9 for gathering the size of current that cable 3 flows through
10, realize real-time display and monitoring.
The display 10, record in real time directly over the cable conductor temperature, cable that thermocouple temperature measurement module 8 obtains with just
Underlying holder cross-arm temperature, the temperature also outside wooden case；And the electric current that current transformer 9 obtains.
The compensating electric capacity 7, can stability checking device for compensating controlling brancher.
Implementation steps：
（One）, platform set up：
（1）：One a length of 2.4 meters are built, width is 0.8 meter, and cable bearer 4 is fixed on wooden case by a height of 1.2 meters of wooden case
Middle part wears two circular holes more bigger than cable 3 at left and right sides of wooden case, cable 3 from circular hole is passed through, is made at cable 3
At 0.1 meter of the surface of the lowest level cross-arm 4.1 of cable bearer 4.
（2）：Cable 3 sequentially passes through rising current transformer 5, current transformer 9 after wooden case is pierced by, finally by connector electricity
Cable connects to form a circuit.
（3）：Thermocouple temperature measurement module 8 is separately fixed at contacted outside wooden case with air, immediately below cable with surface
On cross-arm, the detection of cable conductor position multiple spot, output terminal is connected on display 10, then wooden case is sealed up, formed it into
A free convection environment is constructed in one closed space.
（4）：Rising current transformer 5 with pressure regulator 6 is connected, then is connected to by compensating electric capacity 7 on switchgear 2.
（5）：The output terminal of current transformer 9 is connected on display 10.
（Two）, work before system test：
（1）, power on give switchgear be powered, by switchgear 2 plug-in strip close a floodgate, open data display equipment.
（2）, by quick on controller plus stream button, see can elevated currents, if can not carry out, it is necessary to examine
Look into pressure regulator 6.The disk on pressure regulator 6 is rotated, the gear that its groove connected is connected with motor is blocked, makes pressure regulator 6
Normal work.
（3）, after above-mentioned preparation is completed, check whether temperature can normally show with electric current.
（4）, by observing display 10, by current load to 1600A, observe cable conductor temperature, directly over cable with
Temperature outside underface support cross-arm temperature, wooden case.
Above step（1）、（2）、（3）、（4）It is examined in completing and judges to meet test requirements document, then system test condition
Possess.
（Three）Work after system test：
1）：Display 10 is looked into sight can find that temperature tends towards stability after 5 hours, can extract data and be recorded in form
In.
2）：Electric current is reduced to 0 by the fast prompt drop stream button on controller, is then disconnected the plug-in strip on switchgear 2, most
The power supply of switchgear 2 is disconnected afterwards.
3）：It establishes 4 finite element model of cable bearer and the condition that sets up frontiers is, it is necessary under identical parameter and boundary condition
Such as：The size of current of cable loading, cable data, cable bearer size and material properties, the size and material properties of wooden case.Again
Eddy-current loss on cable bearer 4 is calculated by finite element software.
4）：Using the eddy-current loss on the cable bearer 4 of FEM calculation as the loading environment of fluid temperature field；Fluid temperature
Reference temperature during field computation is spent, the wooden box outside temperature measured for temperature liter experiment porch.
5）：After the completion of fluid temperature field calculates, the temperature with support cross-arm immediately below cable directly over cable is successively read,
The temperature that FEM calculation goes out and the temperature of thermometric experiment measurement are compared, whether calculate error by the temperature of cable conductor
Less than 10%, if then result of finite element can use, otherwise need to correct finite element method.Re-start finite element meter
Calculate, be obtained directly over cable bearer cable with underface support cross-arm temperature and cable conductor temperature again compared with.
In conclusion a kind of experiment porch verified cable bearer eddy-current loss and calculate accuracy of the utility model, to not
Cable run under the cable of cable bearer, different model with model, different operating modes, the experiment porch are applicable in.Both not
With in the case of, it need to only change and re-work a cable bearer 4 according to actual conditions, be laid with new cable 3, it becomes possible to ensure real
The normal operation tested.
Claims (7)
1. a kind of experiment porch verified cable bearer eddy-current loss and calculate accuracy, including enclosed housing（1）, switchgear
（2）, cable（3）, cable bearer（4）, rising current transformer（5）, pressure regulator（6）, thermocouple temperature measurement module（8）, current transformer
（9）, display（10）, compensating electric capacity（7）, it is characterised in that：The cable（3）From enclosed housing（1）After being pierced by, wear successively
Cross rising current transformer（5）, current transformer（9）Connection forms a circuit afterwards；
The cable bearer（4）It is fixed on enclosed housing（1）Middle part；The switchgear（2）Input terminal connects power supply, switchgear
（2）Output terminal connects compensating electric capacity respectively（7）, display（10）；The pressure regulator（6）Input terminal and compensating electric capacity（7）Connection,
Pressure regulator（6）Output terminal and rising current transformer（5）Connection；The current transformer（9）, thermocouple temperature measurement module（8）Output terminal
It is connected to display（10）.
2. a kind of experiment porch verified cable bearer eddy-current loss and calculate accuracy, feature exist according to claim 1
In：The enclosed housing（1）For wooden case, cable bearer（4）Wooden case middle part is fixed on, two are worn at left and right sides of wooden case
Compare cable（3）Bigger circular hole, cable（3）It is passed through from circular hole, cable（3）It is in cable bearer（4）Lowest level cross-arm
（4.1）Surface.
3. a kind of experiment porch verified cable bearer eddy-current loss and calculate accuracy, feature exist according to claim 1
In：The cable bearer（4）Using Q235 material cable beareves.
4. a kind of experiment porch verified cable bearer eddy-current loss and calculate accuracy, feature exist according to claim 1
In：The rising current transformer（5）For adjusting cable（3）Electrical current, rising current transformer（5）Three are employed, cable（3）
It is passed through from three rising current transformers.
5. a kind of experiment porch verified cable bearer eddy-current loss and calculate accuracy, feature exist according to claim 1
In：The pressure regulator（6）, for adjusting cable（3）Voltage.
6. a kind of experiment porch verified cable bearer eddy-current loss and calculate accuracy, feature exist according to claim 1
In：The thermocouple temperature measurement module（8）For four, it is separately fixed at：Enclosed housing（1）It is contacted outside with air, cable conductor
Place, cable（3）On the cross-arm of underface and surface.
7. a kind of experiment porch verified cable bearer eddy-current loss and calculate accuracy, feature exist according to claim 1
In：The current transformer（9）For gathering cable（3）The current data of acquisition is passed to display by the size of current flowed through
（10）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721591267.8U CN207396642U (en) | 2017-11-24 | 2017-11-24 | A kind of experiment porch verified cable bearer eddy-current loss and calculate accuracy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721591267.8U CN207396642U (en) | 2017-11-24 | 2017-11-24 | A kind of experiment porch verified cable bearer eddy-current loss and calculate accuracy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207396642U true CN207396642U (en) | 2018-05-22 |
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ID=62324307
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721591267.8U Expired - Fee Related CN207396642U (en) | 2017-11-24 | 2017-11-24 | A kind of experiment porch verified cable bearer eddy-current loss and calculate accuracy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207396642U (en) |
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2017
- 2017-11-24 CN CN201721591267.8U patent/CN207396642U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180522 Termination date: 20181124 |