CN110231533A - Temperature-rise test device and method, storage medium, computer equipment - Google Patents
Temperature-rise test device and method, storage medium, computer equipment Download PDFInfo
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- CN110231533A CN110231533A CN201910634246.7A CN201910634246A CN110231533A CN 110231533 A CN110231533 A CN 110231533A CN 201910634246 A CN201910634246 A CN 201910634246A CN 110231533 A CN110231533 A CN 110231533A
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- 238000012360 testing method Methods 0.000 title claims abstract description 108
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000003860 storage Methods 0.000 title claims abstract description 14
- 238000005259 measurement Methods 0.000 claims abstract description 128
- 238000001816 cooling Methods 0.000 claims abstract description 82
- 238000004804 winding Methods 0.000 claims description 53
- 230000000694 effects Effects 0.000 claims description 27
- 238000002474 experimental method Methods 0.000 claims description 16
- 238000004590 computer program Methods 0.000 claims description 13
- 230000008569 process Effects 0.000 claims description 10
- 230000005611 electricity Effects 0.000 claims description 6
- 238000011056 performance test Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 12
- 238000013461 design Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000001073 sample cooling Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
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- 238000005119 centrifugation Methods 0.000 description 1
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- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
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- 230000001808 coupling effect Effects 0.000 description 1
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- 238000001914 filtration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 238000012545 processing Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000005619 thermoelectricity Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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Abstract
The present invention provides a kind of temperature-rise test device and method, storage medium, computer equipment, belong to rail transportation vehicle-mounted dry-type transformer and reactor technical field of performance test, device includes: measurement cabinet 1, for measuring the power of sample S, wherein, the sample S includes one or more dry-type transformers and/or one or more dry reactors；Power supply wiring cabinet 2 is connect with the measurement cabinet 1, is powered for the size by adjusting cooling air quantity to the measurement cabinet 1；Cooling equipment 3, connect with the power supply wiring cabinet 2, for cooling down to the sample S.The present invention continuously can be measured and be recorded to the D.C. resistance in multiple channels or more simultaneously, and measurement efficiency is high, and will not introduce measurement error；Air quantity, the high reliablity of measurement result can accurately be controlled.
Description
Technical field
The present invention relates to rail transportation vehicle-mounted dry-type transformer and reactor technical field of performance test more particularly to vehicle-mounted
The temperature-rise test device of dry-type transformer and vehicle-mounted dry reactor, and in particular to temperature-rise test device and method, storage medium,
Computer equipment.
Background technique
Be equipped on rolling stock it is various single-phase with multiphase auxiliary circuit in the dry-type transformers that access, main circuit and auxiliary
Help the various dry reactors also accessed in circuit.Dry-type transformer and reactor are the weights of traction convertor, AuCT
Want component part.Reactor is generally used for filtering and providing short-circuit impedance；Transformer is converted for AuCT voltage class.
Temperature rise is the important parameter of dry-type transformer and reactor, and temperature rise test is examination dry-type transformer and reactor service life and safety
The important tests of operation.
Relative to oil-immersed transformer and reactor, dry-type transformer temperature rise test has the following characteristics that hot spot and winding
Mean temperature or the temperature difference of winding surface temperature can be quite big；The thermal coupling effect of winding and iron core is very strong；Temperature sensing
Device is more easily installed.
According to GB/T 25120-2010, the temperature rise of 1094.6 GB/T, GB/T 1094.11 dry-type transformer and reactor
Test is broadly divided into the following steps:
Step 1: short circuit current test: winding input generates the test current of transformer/reactor total losses, until around
Group and iron core reach stable state.When the temperature rise per hour of winding and iron core is no more than 2K, it is believed that temperature rise constant, that is, reach capacity temperature
It rises.
Step 2: no-load test (only for dry-type transformer): no-load test continues under voltage rating and rated frequency
It carries out, until iron core and winding establish new steady s tate.The temperature rise of each independent winding should be measured.
Step 3: test analysis: winding of each winding under the conditions of winding normal loss and iron core normal excitation is calculated
Overall temperature rise.Temperature rise test generally requires the long period, generally requires 4 to 5 hours, needs synchronous recording defeated during the test
Enter voltage, electric current, power, winding, environment temperature, the cooling parameters such as wind speed and air quantity.After transformer reaches thermal balance, it should cut
Power-off source and the resistance value for measuring winding at once, to obtain the mean temperature of winding.In the process, need testing crew negative
The work such as data record, power supply control, wiring conversion or resistance measurement are blamed, working strength is larger, and manual operation is easy error
Or introduce large error.And for three-phase transformer and reactor, needs Measurement channel more, cause measuring device more.
Chinese invention patent 201811210377.4 discloses a kind of for testing 10kV or 20kV oil-immersed transformer
Temperature rise automatic checkout system and method, test macro are made of control unit, capital equipment and short-circuit device, capital equipment packet
It includes: instrument for measuring DC resistance, power analyzer, temperature polling instrument and three-phase program-controlled power supply；The short-circuit device, D.C. resistance are surveyed
Examination instrument, power analyzer are connected with subject transformer respectively；Three-phase program-controlled power supply is connected with short-circuit device；Control unit respectively with
Instrument for measuring DC resistance, power analyzer are connected with temperature polling instrument.
It is complete that Chinese invention patent 201810785814.9 discloses a kind of automatic measurement dry-type distribution transformer temperature rise test
The method of process, controls using industrial personal computer and monitors voltage rating, rated current and the Protection parameters of dry-type transformer, and records
The resistance value of the dry-type distribution transformer of instrument for measuring DC resistance acquisition, and calculated.Also, connect on instrument for measuring DC resistance
It is connected to power supply, power supply is electrically connected by conducting wire with instrument for measuring DC resistance, and contactor includes normally-closed contact, normally closed touching
Point is arranged on conducting wire.
Although above-mentioned technology can be realized the temperature rise test of transformer to a certain extent, at least have the following disadvantages
And deficiency: firstly, the limit value by measuring device number of channels, above-mentioned patented technology generally uses single channel or binary channels straight
Leakage resistance tester carries out winding resistance measurement, if necessary to be measured to multiple windings, application No. is
201810785814.9 patent is switched over using contactor, successively intermittently measures each winding, application No. is
After 201811210377.4 patent completes a winding measurement, measured again after continuing temperature rise until stablizing it is next around
Group, test efficiency is low, and test accuracy is low.Such situation is more obvious during measurement assists three-phase filter reactor,
Three-phase filter reactor needs simultaneously to measure three windings U1-U2, V1-V2 and W1-W2, using above-mentioned prior art meeting
The time required to greatly increasing measurement, or reduce data sampling precision.Inventor has investigated existing D.C. resistance simultaneously
Tester, generally based on single channel and binary channels, the instrument for measuring DC resistance with 3 channels or 4 channels is few, and general
Price is higher, therefore is not used in the prior art.Therefore in the prior art, it is unable to satisfy while to 3 channels
And the function that the above D.C. resistance is continuously measured and recorded.
Secondly, existing scheme is by direct current resistance m easurem ent point, or after manual removal power supply line, D.C. resistance is tested
Instrument clip is clipped on tested terminal；Or instrument for measuring DC resistance clip is mounted on the normally closed node of contactor.But people
Work installation clip can cause contact resistance different because temperature rise test front and back clamp power is different, introduce measurement error；It adopts
With automatic measurement, the measurement point of clip, which is mounted on the normally closed node of contactor, can satisfy general testing requirement, but for
The transformer and the biggish winding of reactor winding, especially rated current of part specific use, D.C. resistance is generally in 2M
Ω hereinafter, and Partial DC resistance up to 1M Ω once；And the D.C. resistance of contactor contact resistance power-up cable is also generally micro-
Europe is between milliohm, therefore the contact resistance of contactor and the resistance of connecting cable will affect winding resistance measurement result, in turn
Influence the measurement of temperature rise.In the prior art, it not can be realized and fast and automatically measure winding thermal resistance and avoid additional structure
Introduce the scheme of measurement error.
Finally, most of dry-type transformer and reactor are installed in current transformer or cooling in field of track traffic
In the cabinet of unit, winding is cooled down using compression cold wind or using walking wind.It needs to simulate reality during the test
Cooling in installation, therefore, it is necessary to install and design the variable air duct of particular cross section product, to meet different windward product and air quantity
Transformer and reactor test request, while considering to measure wind speed air quantity.Inventor in correlation technique data,
Published technical solution is found no, and in actual production producer test application, wind is designed generally be directed to specific product
Road can generate a large amount of resource constraint and waste, and replace air measuring with measuring wind speed.But due to transformer and reactor
Structure, wind speed is simultaneously uneven, therefore the control to air quantity and inaccurate, and the reliability of measurement result is lower.
Therefore, dry-type transformer and reactor temperature rise on rail traffic vehicles can be applied with automatic measurement by designing one kind
Device, and meet the requirement of Transit Equipment Measurement channel number, measurement accuracy and the type of cooling, be those skilled in the art
The technical issues that need to address.
Summary of the invention
In view of this, the technical problem to be solved in the present invention is that providing a kind of temperature-rise test device and method, storage are situated between
Matter, computer equipment, solve dry-type transformer in the prior art and reactor temperature rise test inefficiency, and test result is reliable
Property difference problem.
In order to solve the above-mentioned technical problem, a specific embodiment of the invention provides a kind of temperature-rise test device, comprising: surveys
Cabinet is measured, for measuring the power of sample, wherein the sample includes one or more dry-type transformers and/or one
A or multiple dry reactors；Power supply wiring cabinet is connect with the measurement cabinet, for powering to the measurement cabinet；Cooling equipment,
It connect with the power supply wiring cabinet, cools down for the size by adjusting cooling air quantity to the sample.
A specific embodiment of the invention also provides a kind of temperature-raising experimental method, comprising: utilizes output single-pole double-throw switch (SPDT)
Thermal resistance access circuit is subjected to cold-state resistance measurement with input single-pole double-throw switch (SPDT)；The reducing air duct of cooling equipment is adjusted,
So that duct cross-section product is met test requirements document, and starts the cooling blower of cooling equipment；Utilize output single-pole double-throw switch (SPDT) and input
Dry-type transformer short circuit is carried out short circuit current test by single-pole double-throw switch (SPDT), to judge that the moment is stablized in temperature rise；It is single using output
Thermal resistance access circuit is carried out short circuit current and tests hot resistance measurement by double-pole double throw switch and input single-pole double-throw switch (SPDT)；It utilizes
It exports single-pole double-throw switch (SPDT) and input single-pole double-throw switch (SPDT) and no-load test is carried out to the dry-type transformer, to judge that temperature rise is steady
Timing is carved；It is using output single-pole double-throw switch (SPDT) and input single-pole double-throw switch (SPDT) that thermal resistance access circuit progress no-load test is hot
Resistance measurement；Stablize moment, the cold-state resistance, short circuit current test hot resistance and the zero load according to the temperature rise
Test hot resistance calculates the winding temperature rise of the dry-type transformer.
A specific embodiment of the invention also provides a kind of temperature-raising experimental method, comprising: utilizes output single-pole double-throw switch (SPDT)
Thermal resistance access circuit is subjected to cold-state resistance measurement with input single-pole double-throw switch (SPDT)；The reducing air duct of cooling equipment is adjusted,
So that duct cross-section product is met test requirements document, and starts the cooling blower of cooling equipment；Utilize output single-pole double-throw switch (SPDT) and input
Dry reactor short circuit is carried out short circuit current test by single-pole double-throw switch (SPDT), to judge that the moment is stablized in temperature rise；It is single using output
Thermal resistance access circuit is carried out short circuit current and tests hot resistance measurement by double-pole double throw switch and input single-pole double-throw switch (SPDT)；According to
The temperature rise stablize moment, the cold-state resistance and short circuit current test hot resistance calculate the dry reactor around
Group temperature rise.
A specific embodiment of the invention also provides a kind of storage medium, and computer journey is stored on the storage medium
Sequence, when the computer program is executed by processor the step of realization temperature-raising experimental method.
A specific embodiment of the invention also provides a kind of computer equipment, including memory, processor and is stored in institute
The computer program that can be run on memory and on the processor is stated, the processor executes real when the computer program
The step of existing temperature-raising experimental method.
Above-mentioned specific embodiment according to the present invention is it is found that temperature-rise test device and method, storage medium, computer are set
It has the advantages that less to the utmost and can while multiple channels and the above D.C. resistance continuously be measured and be recorded, measurement effect
Rate is high, and will not introduce measurement error；Air quantity, the high reliablity of measurement result can accurately be controlled.
It is to be understood that above-mentioned general description and following specific embodiments are merely illustrative and illustrative, not
The range of the invention to be advocated can be limited.
Detailed description of the invention
Following appended attached drawing is part of specification of the invention, depicts example embodiments of the present invention, institute
Attached drawing is used to illustrate the principle of the present invention together with the description of specification.
Fig. 1 is a kind of structural block diagram for temperature-rise test device that the specific embodiment of the invention provides.
Fig. 2 is a kind of structural block diagram for measurement cabinet that the specific embodiment of the invention provides.
Fig. 3 is a kind of circuit diagram for power supply wiring cabinet that the specific embodiment of the invention provides.
Fig. 4 is a kind of structural schematic diagram for cooling equipment that the specific embodiment of the invention provides.
Fig. 5 is a kind of structural schematic diagram in reducing air duct that the specific embodiment of the invention provides.
Fig. 6 is a kind of flow chart for temperature-raising experimental method that the specific embodiment of the invention provides.
Fig. 7 is the mode of connection schematic diagram in Fig. 6.
Fig. 8 is a kind of flow chart for temperature-raising experimental method that another specific embodiment of the present invention provides.
Fig. 9 is the mode of connection schematic diagram in Fig. 8.
Description of symbols:
1 measurement 2 power supply wiring cabinet of cabinet
3 cooling equipment S samples
11 constant-current source, 12 power measurement unit
13 signal process box, 14 interchanger
15 controller, 21 thermal resistance
22 output single-pole double-throw switch (SPDT)s 23 input single-pole double-throw switch (SPDT)
24 current sensor, 25 voltage sensor
26 temperature sensor, 27 low-speed DAQ unit
31 cooling blower, 32 reducing air duct
33 air quantity shield, 321 outer layer air duct board
Air duct board in the right activity of air duct board 323 in 322 left activities
3,211 first vertical plate of air duct board in activity on 324
3212 second vertical plate, 3213 level board
Specific embodiment
Understand in order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below will with attached drawing and in detail
Narration clearly illustrates the spirit of disclosed content, and any skilled artisan is understanding the content of present invention
After embodiment, when the technology that can be taught by the content of present invention, it is changed and modifies, without departing from the essence of the content of present invention
Mind and range.
The illustrative embodiments of the present invention and their descriptions are used to explain the present invention, but not as a limitation of the invention.
In addition, in the drawings and embodiments the use of element/component of same or like label is for representing same or like portion
Point.
About " first " used herein, " second " ... etc., not especially censure the meaning of order or cis-position,
It is non-to limit the present invention, only for distinguish with same technique term description element or operation.
About direction term used herein, such as: upper and lower, left and right, front or rear etc. are only the sides with reference to attached drawing
To.Therefore, the direction term used is intended to be illustrative and not intended to limit this creation.
It is open term, i.e., about "comprising" used herein, " comprising ", " having ", " containing " etc.
Mean including but not limited to.
About it is used herein " and/or ", including any of the things or all combination.
It include " two " and " two or more " about " multiple " herein；It include " two groups " about " multiple groups " herein
And " more than two ".
About term used herein " substantially ", " about " etc., to modify it is any can be with the quantity or mistake of microvariations
Difference, but this slight variations or error can't change its essence.In general, microvariations that such term is modified or error
Range in some embodiments can be 20%, in some embodiments can be 10%, can be in some embodiments 5% or its
His numerical value.It will be understood by those skilled in the art that the aforementioned numerical value referred to can be adjusted according to actual demand, it is not limited thereto.
Fig. 1 is a kind of structural block diagram for temperature-rise test device that the specific embodiment of the invention provides, as shown in Figure 1, such as
Shown in Fig. 1, sample includes one or more dry-type transformers and/or one or more dry reactors, power supply wiring cabinet
Measurement cabinet power supply, the power of measurement cabinet measurement sample are given, cooling equipment cools down to sample.
In the specific embodiment shown in the drawings, temperature-rise test device includes: measurement cabinet 1, power supply wiring cabinet 2 and cooling
Equipment 3.Wherein, measurement cabinet 1 is used to measure the power of sample S, wherein the sample S includes one or more dry
Formula transformer and/or one or more dry reactors；Power supply wiring cabinet 2 is connect with the measurement cabinet 1, and power supply wiring cabinet 2 is used
It powers in the measurement cabinet 1；Cooling equipment 3 is connect with the power supply wiring cabinet 2, and cooling equipment 3 is used for by adjusting cooling
Air volume cools down to the sample S.In the embodiment of the present invention, power supply wiring cabinet 2 by connection cables with it is described
Cabinet 1 is measured to connect；Cooling equipment 3 is connect by connection cables with the power supply wiring cabinet 2；Cooling blower 3 can be using centrifugation
Formula blower.
Referring to Fig. 1, the temperature rise test of rail traffic dry-type transformer and reactor can satisfy, more direct currents are provided
Resistance measurement channel introduces less measurement error, and is capable of the practical type of cooling of simulating vehicle installation, and measurement accuracy is high.
Fig. 2 is a kind of structural block diagram for measurement cabinet that the specific embodiment of the invention provides, as shown in Fig. 2, such as Fig. 2 institute
Show, constant-current source gives measurement cabinet power supply, and power measurement unit measures the voltage of thermal resistance, and signal process box obtains the temperature of sample
Up voltage and temperature-rise current, interchanger acquire the temperature parameter of sample, and controller controls the working condition of cooling equipment.
In the specific embodiment shown in the drawings, the measurement cabinet 1 includes constant-current source 11, power measurement unit 12, letter
Number conditioning case 13, interchanger 14 and controller 15.Wherein, constant-current source 11 is connect with the power supply wiring cabinet 2, and constant-current source 11 is used for
It powers to the measurement cabinet 1；Power measurement unit 12 is connect with the constant-current source 11, and power measurement unit 12 is for measuring thermoelectricity
The voltage of resistance, specifically, constant-current source 11 are connected serially to the current channel in 12 resistance measurement channel of power measurement unit, power measurement list
The voltage channel in first 12 resistance measurement channels directly passes through the voltage measurement terminal that connecting cable is connected to thermal resistance, resistance measurement
Channel is more than or equal to 3 channels, and power measurement unit 12 can be using the WT1806 power analyzer of Yokogawa Motor group production；
Signal process box 13 is connect with the power measurement unit 12, and signal process box 13 is used to obtain the temperature rise of the sample S
Voltage and temperature-rise current；Interchanger 14 is connect with the power measurement unit 12, and interchanger 14 is for acquiring the sample S
Temperature parameter, and provide data exchange for the power measurement unit 12, controller 15 and low-speed DAQ unit 27；Control
Device 15 processed is connect with the interchanger 14, controller 15 be used for according to the voltage, the temperature rise voltage, the temperature-rise current and
The temperature parameter controls the working condition of the cooling equipment 3, and controller 15 is also known as measurement and control host computer, and measurement and control host computer can adopt
With association's T440 industrial personal computer or grind magnificent industrial personal computer.In the embodiment of the present invention, 6 channel powers are can be used in power measurement unit 12
Analyzer can also be acquired using data collecting plate card, for example, National Instruments (NI) production can be used
PXI-6143 board cooperation electric energy saddlebag software (Electrical_Power_Suite) is tested.
Referring to fig. 2, the present invention can accurately, continuously measure the temperature rise of sample S winding, avoid manual operation or
The measurement error that contacts of contactor introduces.
Fig. 3 is a kind of circuit diagram for power supply wiring cabinet that the specific embodiment of the invention provides, as shown in figure 3, figure
Middle position c is the overhead positions of single-pole double-throw switch (SPDT), and single-pole double-throw switch (SPDT) has a non-moving end and two moved ends, current sense
Device measures the temperature-rise current of sample, and voltage sensor measures the temperature rise voltage of sample, and temperature sensor measurement is tested
The temperature parameter of sample, low-speed DAQ unit temperature collection parameter simultaneously control cooling equipment according to the control instruction of controller
Working condition.
In the specific embodiment shown in the drawings, the power supply wiring cabinet 2 includes: one or more thermal resistances
21, a pair of with the one-to-one one or more output single-pole double-throw switch (SPDT)s 22 of the thermal resistance 21 and the thermal resistance 21 1
One or more input single-pole double-throw switch (SPDT)s 23, the one or more and one-to-one current sensor of the thermal resistance 21 answered
24, the one or more and one-to-one voltage sensor 25 of the thermal resistance 21, the one or more and thermal resistance 21 1
One corresponding temperature sensor 26 and low-speed DAQ unit 27.Wherein, the thermal resistance 21 and sample S mono-
One is corresponding；It exports single-pole double-throw switch (SPDT) 22 and the thermal resistance 21 corresponds, export moved end and the institute of single-pole double-throw switch (SPDT) 22
The connection of constant-current source 11 is stated, a non-moving end of output single-pole double-throw switch (SPDT) 22 is connect with the thermal resistance 21；Input single-pole double throw is opened
It closes 23 to correspond with the thermal resistance 21, the moved end of input single-pole double-throw switch (SPDT) 23 is connect with the sample S, and input is single
One non-moving end of double-pole double throw switch 23 is connect with the thermal resistance 21, input single-pole double-throw switch (SPDT) 23 another non-moving end with it is described
Export another non-moving end connection of single-pole double-throw switch (SPDT) 22, wherein the constant-current source 11 is also connect with the sample S；Electricity
Flow sensor 24 and the thermal resistance 21 correspond, and the setting of current sensor 24 is in the constant-current source 11 and the sample
Between S, current sensor 24 is used to measure the temperature-rise current of the sample S, wherein the current sensor 24 with it is described
Signal process box 13 connects；Voltage sensor 25 and the thermal resistance 21 correspond, and voltage sensor 25 is arranged in the quilt
The both ends sample S, voltage sensor 25 are used to measure the temperature rise voltage of the sample S, wherein the voltage sensor 25
It is connect with the signal process box 13；Temperature sensor 26 and the thermal resistance 21 correspond, and the setting of temperature sensor 26 exists
At the temperature test point of the sample S, temperature sensor 26 is used to measure the temperature parameter of the sample S；Low speed
Data acquisition unit 27 is connect with the temperature sensor 26 and the interchanger 14, and low-speed DAQ unit 27 is for acquiring
The temperature parameter and the working condition that the cooling equipment 3 is controlled according to the control instruction of the controller 15, wherein low speed
Data acquisition unit 27 can be using the GX20 data acquisition unit of Yokogawa Motor group production.Specific embodiments of the present invention
In, current sensor 24 can be ammeter；Voltage sensor 25 can be voltmeter；Temperature sensor 26 can be thermometric
Instrument.The contactor of one group of band normally opened and normally closed node can be used by exporting single-pole double-throw switch (SPDT) 22 and inputting single-pole double-throw switch (SPDT) 23
Instead of.
Referring to Fig. 3, the present invention solve automatically adjust air quantity it is air-cooled under the conditions of, accurately continuously measure sample
The temperature rise of S winding, avoids the measurement error of manual operation or contacts of contactor introducing, and measurement accuracy is high.
Fig. 4 is a kind of structural schematic diagram for cooling equipment that the specific embodiment of the invention provides, as shown in figure 4, cooling
Blower is used to adjust the size of sample cooling air quantity for cooling down sample, reducing air duct, and air quantity shield is for measuring
The size of sample cooling air quantity.
In the specific embodiment shown in the drawings, the cooling equipment 3 includes: cooling blower 31, reducing air duct 32
With air quantity shield 33.Cooling blower 31 is connect with the low-speed DAQ unit 27, and cooling blower 31 is described tested for cooling down
Sample S；Reducing air duct 32 and the cooling blower 31 are mechanically connected, and reducing air duct 32 is for adjusting the sample S
The size of cooling air quantity；Air quantity shield 33 is connect with the low-speed DAQ unit 27, and air quantity shield 33 is arranged in the cooling wind
On machine 31, air quantity shield 33 is used to measure the size of the sample S cooling air quantity.In the embodiment of the present invention, cooling blower
31 revolving speed is controlled by the AO unit output d. c. voltage signal of the low-speed DAQ unit 27 of power supply wiring cabinet 2, air quantity shield
33 output signals are connected to the AI unit of the low-speed DAQ unit 27 of power supply wiring cabinet 2.
Referring to fig. 4, using cooling equipment 3 automatically adjust air quantity it is air-cooled under the conditions of, accurately continuously measure sample S
The temperature rise of winding avoids the measurement error of manual operation or contacts of contactor introducing, and measurement accuracy is high, and test effect is good.
Fig. 5 is a kind of structural schematic diagram in reducing air duct that the specific embodiment of the invention provides, as shown in figure 5, can
Variable diameter air duct include outer layer air duct board, it is left activity in air duct board, it is right activity in air duct board and it is multiple it is upper activity in air duct board, left work
Air duct board can move left and right in dynamic interior air duct board and right activity, and air duct board can move up and down in multiple upper activities, and air duct can
It adjusts.
In the specific embodiment shown in the drawings, the reducing air duct 32 is including in outer layer air duct board 321, left activity
Air duct board 322, it is right activity in air duct board 323 and it is multiple it is upper activity in air duct board 324.Wherein, outer layer air duct board 321 has first
Vertical plate 3211, the second vertical plate 3212 and setting are on first vertical plate 3211 and second vertical plate 3212
Level board 3213；Air duct board 322 is connect by screw rod T with first vertical plate 3211 in left activity, air duct in left activity
Plate 322 under the driving of screw rod T for moving left and right；Air duct board 323 passes through screw rod T and second vertical plate in right activity
3212 connect, and air duct board 323 under the driving of screw rod T for moving left and right in right activity；Air duct board 324 is logical in multiple upper activities
It crosses screw rod T to connect with the level board 3213, air duct board 324 under the driving of screw rod T for moving up and down in multiple upper activities.
In the embodiment of the present invention, the screw rod T is connect with the nut thread on the outer layer air duct board 321, one end of the screw rod T
It is fixed on interior air duct board.Outer layer air duct board 321 is welded by 3 groups of galvanized iron sheets；Interior air duct board has double-layer structure, and outside is
Galvanized iron sheet, inside are electro-insulating rubber layer；Wherein, it is left activity in air duct 322 area and the first vertical plate 3211 area phase
Deng, the area in air duct 323 and the area equation of the second vertical plate 3212 in right activity, it is multiple it is it is movable in air duct board 324 face
Product is equal, and the gross area is consistent with the area of level board 3213.Pass through a positioning in each activity between air duct board and exogenous wind guidance tape
Pin and a lead-screw are fixed, and push interior air duct to setting position by lead-screw.
Referring to Fig. 5, positioning pin passes through hole on exogenous wind guidance tape, guarantees interior air duct board along positioning pin and lead-screw restriction side
To horizontal movement, place in air duct board inclination, air quantity can be automatically adjusted, can accurately control air quantity, measurement result can
By property height.
Fig. 6 is a kind of flow chart for temperature-raising experimental method that the specific embodiment of the invention provides, and Fig. 7 is connecing in Fig. 6
Line schematic diagram, method as shown in FIG. 6 can be applied in device shown in FIG. 1 to FIG. 5, by the electricity in resistance measurement channel
Pressure passageway measurement line connects in the channel 4 of dry-type three-phase transformer input terminal U1/V1 and U2/V2 and power measurement unit 12 and leads to
Road 5.The current channel measurement line connection 11 "+" grade of constant-current source in resistance measurement channel and the U1 phase for inputting single-pole double-throw switch (SPDT) 23
2 are set, the U2 phase position 2 of the V1 phase position 2 and output single-pole double-throw switch (SPDT) 22 of connection input single-pole double-throw switch (SPDT) 23 connects output
The V2 phase position 2 of single-pole double-throw switch (SPDT) 22 connects the channel of power measurement unit 12 to the channel of power measurement unit 12 4 " I+ "
4 " I- " connect the channel 5 " I- " of power measurement unit 12 to the "-" of constant-current source 11 to the channel of power measurement unit 12 5 " I+ "
Grade；Voltage-current sensor is connected to the channel of rate measuring unit 12 1, the corresponding voltage and current channel in channel 2 and channel 3；Cloth
Set the temperature measuring positions of temperature sensor 26 to dry-type transformer.
In the specific embodiment shown in the drawings, temperature-raising experimental method includes:
Step 101: using output single-pole double-throw switch (SPDT) and input single-pole double-throw switch (SPDT) that thermal resistance access circuit progress is cold
State resistance measurement.In the embodiment of the present invention, input single-pole double-throw switch (SPDT) 23 and output single-pole double-throw switch (SPDT) 22 are pulled out to position
2.Start constant-current source 11, makes to export 5% to 10% (primary side winding and the secondary side that electric current is equal to dry-type transformer winding rated current
Winding rated current smaller), controller 15 records temperature, voltage, electric current and calculates cold-state resistance.
Step 102: adjusting the reducing air duct of cooling equipment, so that duct cross-section product is met test requirements document, and start cooling
The cooling blower of equipment.In the embodiment of the present invention, the sectional area in air duct is designed according to dry-type three-phase transformer, is adjusted in left and right
Movable air duct board 322,323 makes air duct width in two panels be equal to design air duct width, makes to be tightened by bolts movable air duct in left and right
The position of plate 322,323；According to air duct width, the lead-screw of air duct board 324 in the upper activity of corresponding the piece number is adjusted, air duct is made
Height is equal to the height in design air duct.
Step 103: using output single-pole double-throw switch (SPDT) and input single-pole double-throw switch (SPDT) that dry-type transformer short circuit progress is short
Road current testing, to judge that the moment is stablized in temperature rise.In the embodiment of the present invention, start cooling blower 31, controller 15 uses
PID dynamic control air quantity is to setting air quantity.Input single-pole double-throw switch (SPDT) 23 and output single-pole double-throw switch (SPDT) 22 are pulled out to position 1, are opened
Dynamic constant-current source makes the winding of dry-type transformer input the test current for generating dry-type transformer total losses, until dry-type transformer
Winding and iron core reach stable state, controller 15 is according to the data judging of power measurement unit 12 and low-speed DAQ unit 27
The moment is stablized in temperature rise.
Step 104: using output single-pole double-throw switch (SPDT) and input single-pole double-throw switch (SPDT) that thermal resistance access circuit progress is short
The measurement of road current testing hot resistance.In the embodiment of the present invention, input single-pole double-throw switch (SPDT) 23 and output single-pole double throw are opened
It closes 22 to pull out to position 2, starts constant-current source 11, make to export 5% to the 10% of the winding rated current that electric current is equal to dry-type transformer
(primary side winding and secondary side winding rated current smaller), controller 15 record temperature, voltage and current and calculate short circuit current
Test hot resistance.
Step 105: the dry-type transformer being carried out using output single-pole double-throw switch (SPDT) and input single-pole double-throw switch (SPDT) empty
Test is carried, to judge that the moment is stablized in temperature rise.In the embodiment of the present invention, input single-pole double-throw switch (SPDT) 23 is pulled out to position 1, it is defeated
Single-pole double-throw switch (SPDT) 22 is hanging out.Start constant-current source, makes the input voltage voltage rating for inputting dry-type transformer, until winding
Reach stable state with iron core, controller 15 is stablized according to power measurement unit 12 and the 27 data judging temperature rise of low-speed DAQ unit
Moment.
Step 106: using output single-pole double-throw switch (SPDT) and input single-pole double-throw switch (SPDT) that thermal resistance access circuit progress is empty
Carry test hot resistance measurement.In the embodiment of the present invention, input single-pole double-throw switch (SPDT) 23 and output single-pole double-throw switch (SPDT) 22 are pulled out
To position 2.Start constant-current source 11, makes to export 5% to 10% (primary side winding and the secondary side winding that electric current is equal to winding rated current
Rated current smaller), controller 15 records temperature, voltage, electric current and calculates no-load test hot resistance.
Step 107: according to the temperature rise stablize the moment, the cold-state resistance, the short circuit current test hot resistance and
The no-load test hot resistance calculates the winding temperature rise of the dry-type transformer.
Referring to Fig. 6, Fig. 7, the present invention solve automatically adjust air quantity it is air-cooled under the conditions of, accurately continuously measure quilt
The temperature rise of sample S winding avoids the measurement error of manual operation or contacts of contactor introducing.
Fig. 8 is a kind of flow chart for temperature-raising experimental method that another specific embodiment of the present invention provides, and Fig. 9 is in Fig. 8
Mode of connection schematic diagram, method as shown in Figure 8 can be applied in the device shown in FIG. 1 to FIG. 5, by resistance measurement channel
Voltage channel measurement line connect in three-phase dry type reactor input terminal U1/U2, V1/V2, W1/W2 and power measurement unit 12
Channel 6 is arrived in channel 4.The current channel measurement line connection 11 "+" grade of constant-current source and input single-pole double-throw switch (SPDT) in resistance measurement channel
23 U1 phase position 2, the U2 phase position 2 of connection output single-pole double-throw switch (SPDT) 22 and the V1 phase position of input single-pole double-throw switch (SPDT) 23
2, to the W1 phase position 2 of input single-pole double-throw switch (SPDT) 23, connection exports single the V2 phase position 2 of connection output single-pole double-throw switch (SPDT) 22
The W2 phase position 2 of double-pole double throw switch 22 connects the channel 4 of power measurement unit 12 to the channel of power measurement unit 12 4 " I+ "
" I- " to the channel of power measurement unit 12 5 " I+ " connects the channel 5 " I- " of power measurement unit 12 to power measurement unit 12
Channel 6 " I+ ", connect the channel 6 " I- " of power measurement unit 12 to 11 "-" grade of constant-current source；Connect voltage-current sensor
24,25 to the channel of power measurement unit 12 1, the corresponding voltage and current channel in channel 2 and channel 3；Arrange temperature sensor 26
To dry reactor device temperature measuring positions.
In the specific embodiment shown in the drawings, temperature-raising experimental method includes:
Step 201: using output single-pole double-throw switch (SPDT) and input single-pole double-throw switch (SPDT) that thermal resistance access circuit progress is cold
State resistance measurement.In the embodiment of the present invention, input single-pole double-throw switch (SPDT) 23 and output single-pole double-throw switch (SPDT) 22 are pulled out to position 2.
Start constant-current source 11, makes to export 5% to the 10% of the winding rated current that electric current is equal to dry reactor, controller 15 records temperature
Degree, voltage, electric current simultaneously calculate cold-state resistance.
Step 202: adjusting the reducing air duct of cooling equipment, so that duct cross-section product is met test requirements document, and start cooling
The cooling blower of equipment.In the embodiment of the present invention, duct cross-section product is designed according to three-phase dry type reactor, adjustment left and right is interior living
Dynamic air duct board 322,323 makes air duct width in two panels be equal to design air duct width, makes to be tightened by bolts movable air duct board in left and right
322,323 position；According to air duct width, air duct board 324 in the upper activity of corresponding the piece number is put down, air duct height is made to be equal to design
Air duct height, and the mutual jam-packed of electro-insulating rubber layer.
Step 203: using output single-pole double-throw switch (SPDT) and input single-pole double-throw switch (SPDT) that dry reactor short circuit progress is short
Road current testing, to judge that the moment is stablized in temperature rise.In the embodiment of the present invention, start cooling blower 31, controller 15 uses
PID dynamic control air quantity is to setting air quantity.Input single-pole double-throw switch (SPDT) 23 and output single-pole double-throw switch (SPDT) 22 are pulled out to position 1, are opened
Dynamic constant-current source makes the winding of dry reactor input the test current for generating total losses, until winding and iron core reach stable state, controls
Device 15 processed stablizes the moment according to the data judging temperature rise of power measurement unit 12 and low-speed DAQ unit 27.
Step 204: using output single-pole double-throw switch (SPDT) and input single-pole double-throw switch (SPDT) that thermal resistance access circuit progress is short
The measurement of road current testing hot resistance.In the embodiment of the present invention, input single-pole double-throw switch (SPDT) 23 and output single-pole double-throw switch (SPDT)
22 pull out to position 2.Start constant-current source 11, makes to export 5% to the 10% of the winding rated current that electric current is equal to dry reactor, control
Device 15 processed records temperature, voltage, electric current and calculates short circuit current test hot resistance.
Step 205: moment, the cold-state resistance and the short circuit current being stablized according to the temperature rise and test hot resistance meter
Calculate the winding temperature rise of the dry reactor.
Referring to Fig. 8, Fig. 9, the present invention solve automatically adjust air quantity it is air-cooled under the conditions of, accurately continuously measure quilt
The temperature rise of sample S winding avoids the measurement error of manual operation or contacts of contactor introducing.
The present invention also provides a kind of storage medium, computer program, the computer journey are stored on the storage medium
Temperature-raising experimental method is realized when sequence is executed by processor, method the following steps are included:
Step 101: using output single-pole double-throw switch (SPDT) and input single-pole double-throw switch (SPDT) that thermal resistance access circuit progress is cold
State resistance measurement.
Step 102: adjusting the reducing air duct of cooling equipment, so that duct cross-section product is met test requirements document, and start cooling
The cooling blower of equipment.
Step 103: using output single-pole double-throw switch (SPDT) and input single-pole double-throw switch (SPDT) that dry-type transformer short circuit progress is short
Road current testing, to judge that the moment is stablized in temperature rise.
Step 104: using output single-pole double-throw switch (SPDT) and input single-pole double-throw switch (SPDT) that thermal resistance access circuit progress is short
The measurement of road current testing hot resistance.
Step 105: the dry-type transformer being carried out using output single-pole double-throw switch (SPDT) and input single-pole double-throw switch (SPDT) empty
Test is carried, to judge that the moment is stablized in temperature rise.
Step 106: using output single-pole double-throw switch (SPDT) and input single-pole double-throw switch (SPDT) that thermal resistance access circuit progress is empty
Carry test hot resistance measurement.
Step 107: according to the temperature rise stablize the moment, the cold-state resistance, the short circuit current test hot resistance and
The no-load test hot resistance calculates the winding temperature rise of the dry-type transformer.
The present invention also provides a kind of storage medium, computer program, the computer journey are stored on the storage medium
Temperature-raising experimental method is realized when sequence is executed by processor, method the following steps are included:
Step 201: using output single-pole double-throw switch (SPDT) and input single-pole double-throw switch (SPDT) that thermal resistance access circuit progress is cold
State resistance measurement.
Step 202: adjusting the reducing air duct of cooling equipment, so that duct cross-section product is met test requirements document, and start cooling
The cooling blower of equipment.
Step 203: using output single-pole double-throw switch (SPDT) and input single-pole double-throw switch (SPDT) that dry reactor short circuit progress is short
Road current testing, to judge that the moment is stablized in temperature rise.
Step 204: using output single-pole double-throw switch (SPDT) and input single-pole double-throw switch (SPDT) that thermal resistance access circuit progress is short
The measurement of road current testing hot resistance.
Step 205: moment, the cold-state resistance and the short circuit current being stablized according to the temperature rise and test hot resistance meter
Calculate the winding temperature rise of the dry reactor.
The present invention also provides a kind of computer equipment, including memory, processor and it is stored on the memory and can
The computer program run on the processor, the processor realize temperature rise test side when executing the computer program
Method, method the following steps are included:
Step 101: using output single-pole double-throw switch (SPDT) and input single-pole double-throw switch (SPDT) that thermal resistance access circuit progress is cold
State resistance measurement.
Step 102: adjusting the reducing air duct of cooling equipment, so that duct cross-section product is met test requirements document, and start cooling
The cooling blower of equipment.
Step 103: using output single-pole double-throw switch (SPDT) and input single-pole double-throw switch (SPDT) that dry-type transformer short circuit progress is short
Road current testing, to judge that the moment is stablized in temperature rise.
Step 104: using output single-pole double-throw switch (SPDT) and input single-pole double-throw switch (SPDT) that thermal resistance access circuit progress is short
The measurement of road current testing hot resistance.
Step 105: the dry-type transformer being carried out using output single-pole double-throw switch (SPDT) and input single-pole double-throw switch (SPDT) empty
Test is carried, to judge that the moment is stablized in temperature rise.
Step 106: using output single-pole double-throw switch (SPDT) and input single-pole double-throw switch (SPDT) that thermal resistance access circuit progress is empty
Carry test hot resistance measurement.
Step 107: according to the temperature rise stablize the moment, the cold-state resistance, the short circuit current test hot resistance and
The no-load test hot resistance calculates the winding temperature rise of the dry-type transformer.
The present invention also provides a kind of computer equipment, including memory, processor and it is stored on the memory and can
The computer program run on the processor, the processor realize temperature rise test side when executing the computer program
Method, method the following steps are included:
Step 201: using output single-pole double-throw switch (SPDT) and input single-pole double-throw switch (SPDT) that thermal resistance access circuit progress is cold
State resistance measurement.
Step 202: adjusting the reducing air duct of cooling equipment, so that duct cross-section product is met test requirements document, and start cooling
The cooling blower of equipment.
Step 203: using output single-pole double-throw switch (SPDT) and input single-pole double-throw switch (SPDT) that dry reactor short circuit progress is short
Road current testing, to judge that the moment is stablized in temperature rise.
Step 204: using output single-pole double-throw switch (SPDT) and input single-pole double-throw switch (SPDT) that thermal resistance access circuit progress is short
The measurement of road current testing hot resistance.
Step 205: moment, the cold-state resistance and the short circuit current being stablized according to the temperature rise and test hot resistance meter
Calculate the winding temperature rise of the dry reactor.
The above-mentioned embodiment of the present invention can be implemented in various hardware, Software Coding or both combination.For example, this hair
Bright embodiment can also be the execution above method in data signal processor (Digital Signal Processor, DSP)
Program code.The present invention can also refer to computer processor, digital signal processor, microprocessor or field-programmable gate array
Arrange the multiple functions that (Field Programmable GateArray, FPGA) is executed.Above-mentioned processing can be configured according to the present invention
Device executes particular task, and machine-readable software code or the firmware generation of the ad hoc approach that the present invention discloses are defined by executing
Code is completed.Software code or firmware code can be developed as different program languages and different formats or form.Can also be
Different target platform composing software codes.However, executing software code and the other types configuration generation of task according to the present invention
Different code pattern, type and the language of code do not depart from spirit and scope of the invention.
The foregoing is merely the schematical specific embodiments of the present invention, before not departing from conceptions and principles of the invention
It puts, the equivalent changes and modifications that any those skilled in the art is made should belong to the scope of protection of the invention.
Claims (10)
1. a kind of temperature-rise test device, which is characterized in that the device includes:
It measures cabinet (1), for measuring the power of sample (S), wherein the sample (S) includes one or more dry
Formula transformer and/or one or more dry reactors；
Power supply wiring cabinet (2) is connect with the measurement cabinet (1), for powering to the measurement cabinet (1)；And
Cooling equipment (3), connect with the power supply wiring cabinet (2), for the size by adjusting cooling air quantity to described tested
Sample (S) cooling.
2. temperature-rise test device according to claim 1, which is characterized in that the measurement cabinet (1) includes:
Constant-current source (11) is connect with the power supply wiring cabinet (2), for powering to the measurement cabinet (1)；
Power measurement unit (12) is connect, for measuring the voltage of thermal resistance with the constant-current source (11)；
Signal process box (13) is connect with the power measurement unit (12), for obtaining the temperature rise electricity of the sample (S)
Pressure and temperature-rise current；
Interchanger (14) is connect with the power measurement unit (12), for acquiring the temperature parameter of the sample (S),
And data exchange is provided for the power measurement unit 12, controller 15 and low-speed DAQ unit 27；And
Controller (15) is connect with the interchanger (14), for according to the voltage, the temperature rise voltage, temperature rise electricity
Stream and the temperature parameter control the working condition of the cooling equipment (3).
3. temperature-rise test device according to claim 2, which is characterized in that the power supply wiring cabinet (2) includes:
One or more thermal resistances (21), correspond with the sample (S)；
With one-to-one one or more outputs single-pole double-throw switch (SPDT) (22) of the thermal resistance (21), moved end and the constant current
Source (11) connection, one non-moving end is connect with the thermal resistance (21)；
With one-to-one one or more inputs single-pole double-throw switch (SPDT) (23) of the thermal resistance (21), moved end is tested with described
Sample (S) connection, one non-moving end are connect with the thermal resistance (21), another non-moving end and the output single-pole double-throw switch (SPDT)
(22) another non-moving end connection, wherein the constant-current source (11) also connect with the sample (S)；
One or more current sensors (24) one-to-one with the thermal resistance (21), setting the constant-current source (11) with
Between the sample (S), for measuring the temperature-rise current of the sample (S), wherein the current sensor (24)
It is connect with the signal process box (13)；
One or more and the thermal resistance (21) one-to-one voltage sensor (25), is arranged at the sample (S)
Both ends, for measuring the temperature rise voltage of the sample (S), wherein the voltage sensor (25) and the signal condition
Case (13) connection；
One or more and the thermal resistance (21) one-to-one temperature sensor (26), is arranged at the sample (S)
Temperature test point at, for measuring the temperature parameter of the sample (S)；And
Low-speed DAQ unit (27) is connect, for acquiring with the temperature sensor (26) and the interchanger (14)
It states temperature parameter and controls the working condition of the cooling equipment (3) according to the control instruction of the controller (15).
4. temperature-rise test device according to claim 3, which is characterized in that the cooling equipment (3) include:
Cooling blower (31) is connect, for cooling down the sample (S) with the low-speed DAQ unit (27)；
Reducing air duct (32) is mechanically connected, for adjusting the sample (S) cooling air quantity with the cooling blower (31)
Size；And
The air quantity shield (33) connecting with the low-speed DAQ unit (27) is arranged on the cooling blower (31), uses
In the size for measuring sample (S) cooling air quantity.
5. temperature-rise test device according to claim 4, which is characterized in that the reducing air duct (32) includes:
Outer layer air duct board (321) has the first vertical plate (3211), the second vertical plate (3212) and setting perpendicular described first
Level board (3213) on straight panel (3211) and second vertical plate (3212)；
Air duct board (322) in left activity, is connect by screw rod (T) with first vertical plate (3211), in screw rod (T)
It is moved left and right under driving；
Air duct board (323) in right activity, is connect by screw rod (T) with second vertical plate (3212), in screw rod (T)
It is moved left and right under driving；And
Air duct board (324) in multiple upper activities, is connect, in screw rod (T) with the level board (3213) by screw rod (T)
It is moved up and down under driving.
6. temperature-rise test device according to claim 5, which is characterized in that the screw rod (T) and the outer layer air duct board
(321) the nut thread connection on, one end of the screw rod (T) is fixed on interior air duct board.
7. a kind of temperature-raising experimental method, which is characterized in that this method comprises:
Thermal resistance access circuit is subjected to cold-state resistance measurement using output single-pole double-throw switch (SPDT) and input single-pole double-throw switch (SPDT)；
The reducing air duct for adjusting cooling equipment makes duct cross-section product meet test requirements document, and starts the cooling wind of cooling equipment
Machine；
Dry-type transformer short circuit is subjected to short circuit current test using output single-pole double-throw switch (SPDT) and input single-pole double-throw switch (SPDT), from
And judges temperature rise and stablize the moment；
Thermal resistance access circuit is subjected to short circuit current using output single-pole double-throw switch (SPDT) and input single-pole double-throw switch (SPDT) and tests heat
State resistance measurement；
No-load test is carried out to the dry-type transformer using output single-pole double-throw switch (SPDT) and input single-pole double-throw switch (SPDT), to sentence
The moment is stablized in disconnected temperature rise；
Thermal resistance access circuit is subjected to the hot electricity of no-load test using output single-pole double-throw switch (SPDT) and input single-pole double-throw switch (SPDT)
Resistance measurement；And
Stablize moment, the cold-state resistance, short circuit current test hot resistance and the no-load test according to the temperature rise
Hot resistance calculates the winding temperature rise of the dry-type transformer.
8. a kind of temperature-raising experimental method, which is characterized in that this method comprises:
Thermal resistance access circuit is subjected to cold-state resistance measurement using output single-pole double-throw switch (SPDT) and input single-pole double-throw switch (SPDT)；
The reducing air duct for adjusting cooling equipment makes duct cross-section product meet test requirements document, and starts the cooling wind of cooling equipment
Machine；
Dry reactor short circuit is subjected to short circuit current test using output single-pole double-throw switch (SPDT) and input single-pole double-throw switch (SPDT), from
And judges temperature rise and stablize the moment；
Thermal resistance access circuit is subjected to short circuit current using output single-pole double-throw switch (SPDT) and input single-pole double-throw switch (SPDT) and tests heat
State resistance measurement；And
Stablize moment, the cold-state resistance and short circuit current test hot resistance according to the temperature rise and calculates the dry type electricity
The winding temperature rise of anti-device.
9. a kind of storage medium, which is characterized in that be stored with computer program, the computer program quilt on the storage medium
The step of temperature-raising experimental method described in claim 7 or 8 is realized when processor executes.
10. a kind of computer equipment, which is characterized in that including memory, processor and be stored on the memory and can be
The computer program run on the processor, the processor realize claim 7 or 8 institutes when executing the computer program
The step of temperature-raising experimental method stated.
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| CN110967582A (en) * | 2019-12-13 | 2020-04-07 | 中国能源建设集团江苏省电力设计院有限公司 | Wire temperature rise experimental device and experimental method thereof |
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| CN113009234A (en) * | 2021-02-23 | 2021-06-22 | 方圆广电检验检测股份有限公司 | Automatic winding resistance measuring system and measuring method thereof |
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