CN206134052U - Transformer and asynchronous machine comprehensive experiment platform with select and protection device - Google Patents
Transformer and asynchronous machine comprehensive experiment platform with select and protection device Download PDFInfo
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- CN206134052U CN206134052U CN201620698799.0U CN201620698799U CN206134052U CN 206134052 U CN206134052 U CN 206134052U CN 201620698799 U CN201620698799 U CN 201620698799U CN 206134052 U CN206134052 U CN 206134052U
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- Prior art keywords
- transformer
- asynchronous machine
- protection device
- experiment
- processor
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Abstract
The utility model relates to a transformer and asynchronous machine comprehensive experiment platform with select and protection device, including the experiment panel, experiment function selector button (1), treater (2), signal of telecommunication detection device (3) and warning and protection device (4), experiment function selector button (1) sets up on the experiment panel, be connected with treater (2), treater (2) are connected with signal of telecommunication detection device (3) and warning and protection device (4) respectively, signal of telecommunication detection device (3) are connected with transformer and asynchronous machine respectively, a voltage for detecting the former limit of transformer, the voltage of electric current and asynchronous machine stator, the electric current, report to the police and protection device (4) use of emergency alarm and cut off the transformer and asynchronous machine's power. Compared with the prior art, the utility model discloses to different experimental subject and experiment content categorized protection, the determination condition who moves to the protection carries out individualized setting, reduced safety accident's emergence.
Description
Technical field
The utility model is related to a kind of transformer and asynchronous machine comprehensive experiment table, more particularly, to it is a kind of with select with
The transformer of protection device and asynchronous machine comprehensive experiment table.
Background technology
Electrical engineering and it's automation major experimental teaching is one of most important link of professional teaching, the practice of student
Ability and innovation ability are to weigh the professional important indicator.Coordinating specialized courses, the synthesis of training student comprehensive experiment more
Application power, the ability integraded theory with practice, show respectively structure of knowledge aspect, analysis and research aspect, integrated application
The comprehensive ability of aspect, in line with complementary principle, permeability principle, progressive property principle, principle of systenatization design and development.
Used as the core professional courses of electrical engineering and it's automation major, corresponding experimental teaching also seems outstanding to Electrical Motor
For important.Corresponding each experiment of its theoretical content is required to good electricity experiment basis and higher awareness of safety,
The not only operation characteristic of measuring transformer and motor in the study of this experimental courses, to be also in combination with the operation of power network
One requires higher experimental courses to comprehensive.
Nowadays the motor experiment object of many colleges and universities is low-power machine or wattage transformer (power about below 500W),
The operating mode of actual heavy-duty motor cannot many times be reacted, it is impossible to the various characteristics of accurate measurement motor, be unfavorable for being dragged
Dynamic experiment.Therefore selecting the heavy-duty motor development motor experiment of closing to reality situation can make electrical engineering and it's automation major
Student's understanding really deeply to Electrical Motor course.
Not only difficulty is high for the related experiment launched to heavy-duty motor, and experimental power supply voltage is high, with certain danger
Property, therefore the protection system to experimental bench proposes higher requirement.And work as experimental bench and be provided simultaneously with transformer and asynchronous machine
During two different experimental subjects of parameter, then need to arrange targetedly safeguard measure.
The experimental facilities for being presently used for motor experiment teaching is more common, but its safeguard measure is roughly the same, common reality
The defect that the equipment of testing presently, there are is：
1. when an experimental bench faces multiclass experimental subjects, experimental selection function, or even the experimental bench protection having are not possessed
Arrange more coarse, when rated value is close, taking specified higher value carries out protection setting, although motor is used to test in colleges and universities
Run time far below run time in actual factory, if but student's misoperation, will destroy exhausted with accumulating over a long period
Edge, or even winding is burnt out, so as to directly shorten the life-span of motor；
2. when pair same experimental subjects carries out different experiments, there is the different situation of protection setting, have no that classification is protected
The mode that shield is arranged；
3. the signals collecting mode of analog circuit is adopted electronic type protection system nowadays in motor experiment platform more, and it is little
By the way of digital chip, the former is increasingly complex in terms of data processing, response speed, certainty of measurement, maintenance in the future.
Utility model content
The purpose of this utility model be exactly the defect in order to overcome above-mentioned prior art to exist and one kind is provided can be to difference
The experiment of species carries out the transformer and asynchronous machine comprehensive experiment table with selection with protection device of personalized protection.
The purpose of this utility model can be achieved through the following technical solutions：
A kind of transformer and asynchronous machine comprehensive experiment table with selection with protection device, including test panel, also wrap
Include experiential function select button, processor, electrical signal detection device and report to the police and protection device, described experiential function selects to press
Button is arranged in test panel and is connected with processor, described processor respectively with electrical signal detection device and report to the police and protect
Device connects, and described electrical signal detection device is connected respectively with transformer and asynchronous machine, for detecting transformer primary side
Voltage, the voltage of electric current and asynchronous machine stator, electric current, described warning and protection device be used to reporting to the police and disconnecting transformer and
The power supply of asynchronous machine.
Described electrical signal detection device includes digit chip, and described digit chip passes through respectively voltage current transformer
It is connected with transformer and asynchronous machine.
Described experiential function select button is normally opened button.
Described experiential function select button is connected by binding post with processor.
Described warning and protection device includes audible-visual annunciator and relay, and described audible-visual annunciator connects with processor
Connect, described relay is connected respectively with the power supply of processor, the power supply of transformer and asynchronous machine.
Compared with prior art, the utility model has advantages below：
(1) by the connection of experiential function select button and processor and electrical signal detection device, realize to different experiments
The categorized protection of object and experiment content, to the decision condition of protection act personal settings can be carried out, so as to carry out being directed to
Property protection, reduce security incident generation.
(2) electrical signal detection device uses digit chip, and digit chip is respectively by voltage current transformer and transformer
With asynchronous machine connection, the electric quantity signal real-time detection of digital chip is capable of achieving, eliminates and carry out inside processor data
Calculating, the programming of digital filtering, there is the certainty of measurement of faster response speed and Geng Gao, and circuit is constituted simply so that
Circuit maintenance and trouble shooting are more easy.
(3) experiential function select button is normally opened button, is connected with processor by binding post, easy-to-connect, and can
Realize Function Extension.
(4) report to the police and protection device includes audible-visual annunciator and relay, be directly connected to processor, send out in protection act
Can be observed by audible-visual annunciator after life, remind operating personnel to take measures in time, while the actuating of relay is cut off the electricity supply.
Description of the drawings
Fig. 1 is composition structured flowchart of the present utility model；
Fig. 2 is the experiential function selecting circuit structure schematic diagram of the present embodiment；
Fig. 3 is the digital core chip electrical signal detection electrical block diagram of the present embodiment.
Specific embodiment
Below in conjunction with the accompanying drawings the utility model is described in detail with specific embodiment.The present embodiment is with the utility model
Implemented premised on technical scheme, given detailed embodiment and specific operating process, but guarantor of the present utility model
Shield scope is not limited to following embodiments.
Embodiment
As shown in figure 1, a kind of transformer and asynchronous machine comprehensive experiment table with selection with protection device, including experiment
Panel, experiential function select button 1, processor 2, electrical signal detection device 3 and warning and protection device 4, experiential function is selected
Button 1 is arranged in test panel and is connected with processor 2, processor 2 respectively with electrical signal detection device 3 and report to the police and protect
Device 4 connects, and electrical signal detection device 3 is connected respectively with transformer and asynchronous machine, for detect transformer primary side voltage,
The voltage of electric current and asynchronous machine stator, electric current, report to the police and protection device 4 is used to reporting to the police and disconnecting transformer and asynchronous machine
Power supply, electrical signal detection device 3 includes digit chip, and digit chip is respectively by voltage current transformer and transformer and asynchronous
Motor connection.Experiential function select button 1 is normally opened button, is connected with processor 2 by binding post.Report to the police and protection device
4 include audible-visual annunciator and relay, and audible-visual annunciator is connected with processor 2, relay respectively with processor 2, transformer
The power supply connection of power supply and asynchronous machine.
Before a certain experiment is carried out, the corresponding experiential function select button 1 of the experiment is selected, so as to trigger and this experiment phase
The operational factor of the defence program of pass, the Real-time Collection transformer of digital core chip electrical signal detection device 3 or asynchronous machine, and give
Enter processor 2, be compared with the parameter of protection setting, if beyond protection setting value, reporting to the police and protection device 4 sending warning
And carry out cutting power protection action.
Experiential function select button 1 includes 9 buttons, and different experiment contents are corresponded to respectively, presses before experiment corresponding
Button, with start personalization detection and defence program.
Fig. 2 is experiential function selection circuit, and binding post P1 is connected with the I/O mouths of processor, S1 correspondence experimental selections
" measurement of polarity of transformer end " button in button area, S2 correspondence " no-load transformer experiment " buttons, S3 correspondence " transformer short-circuits
Experiment " button, S4 correspondence " transformer load experiment " buttons, S5 correspondence " non-synchronous motor parameter measurement " buttons, S6 correspondences are " asynchronous
The intrinsic measuring mechanical characteristics of motor " button, S7 correspondence " the artificial measuring mechanical characteristics of asynchronous machine " buttons, S8 correspondence " asynchronous electricity
Machine drags experiment " button, S9 is empty, can be retained for the new experiment content of subsequent development.
Fig. 3 is digital core chip electrical signal detection circuit, and, for ADE7758, this circuit can for the digital chip that here is adopted
Realize three-phase voltage, the analog quantity of three-phase current is changed to digital quantity.Wherein, P1, P2, P3 binding post is followed successively by A, B, C tri-
Phase voltage simulation input mouth, IAP-IAN, IBP-IBN, ICP-ICN are followed successively by A, B, C three-phase current simulation input mouth.Terminals
P5 is the power supply interface of this circuit, and power supply is+5V.Terminals P6 be digital-quantity output interface, the I/ with processor 2
O mouths are connected.Voltage transformer pt 1-PT3 in circuit and Current Transmit 1-CT3 is using the electricity of model TVA1421
Current voltage General mutual inductor.
When experimental subjects is a three-phase transformer, parameter is as follows：Rated capacity：3kVA；Specified phase voltage：AC 220V/
127V；Rated line voltage：AC 380V/220V；Specified phase current AC 4.56A/7.87A.
Digital core chip electrical signal detection circuit is to detect the phase voltage and phase current of transformer primary side.To three phase-change pressures
When device implements different experiments content, distinguish as follows：
1. when carrying out no-load transformer experiment, S2 is pressed the button, digital core chip electrical signal detection circuit detects successively change
Whether whether depressor former limit three-phase voltage be less than 5.4A less than 240V, three-phase current, if having any one to exceed setting
Definite value, then report to the police and protection device 4 send and reports to the police and carry out to cut power protection action.
2. when carrying out transformer short-circuit experiment, S3 is pressed the button, digital core chip electrical signal detection circuit detects successively change
Whether whether depressor former limit three-phase voltage be less than 5.4A less than 50V, three-phase current, if there is any one to exceed setting
Value, then report to the police and protection device 4 send and reports to the police and carry out to cut power protection action.
When experimental subjects is a three-phase transformer and an asynchronous motors, transformer parameter is as follows：
Rated capacity：3kVA；Specified phase voltage：AC 220V/127V；Rated line voltage：AC 380V/220V；Specified phase
Electric current AC 4.56A/7.87A.Digital core chip electrical signal detection circuit to detect transformer primary side phase voltage and mutually electricity
Stream.
Non-synchronous motor parameter is as follows：
Rated power：2.8kW, stator voltage：380V, rotor voltage：195V, stator current：6.63A, rotor current：
9.3A.Digital core chip electrical signal detection circuit is to detect the voltage and current of stator.
3. when carrying out transformer load experiment, S4 is pressed the button, digital core chip electrical signal detection circuit detects successively change
Whether whether depressor former limit three-phase voltage be less than 5.4A less than 240V, three-phase current, if having any one to exceed setting
Definite value, then report to the police and protection device 4 send and reports to the police and carry out to cut power protection action.
4. when carrying out the intrinsic measuring mechanical characteristics of asynchronous machine and testing, S6, digital core chip electrical signal detection are pressed the button
Circuit detects successively whether whether asynchronous machine stator voltage be less than 6.9A less than 400V, three-phase current, if having appointing
Meaning one exceedes setting value, then report to the police and protection device 4 sends and reports to the police and carry out to cut power protection action.
Claims (5)
1. a kind of with selecting and the transformer of protection device and asynchronous machine comprehensive experiment table, including test panel, its feature
It is, also including experiential function select button (1), processor (2), electrical signal detection device (3) and warning and protection device
(4), described experiential function select button (1) is arranged in test panel and is connected with processor (2), described processor
(2) respectively with electrical signal detection device (3) and report to the police and protection device (4) be connected, described electrical signal detection device (3) is distinguished
It is connected with transformer and asynchronous machine, for detecting voltage, the voltage of electric current and asynchronous machine stator, the electricity of transformer primary side
Stream, described warning and protection device (4) for report to the police and disconnecting transformer and asynchronous machine power supply.
2. according to claim 1 a kind of with the transformer and asynchronous machine comprehensive experiment table that select with protection device,
Characterized in that, described electrical signal detection device (3) includes digit chip, described digit chip passes through respectively voltage x current
Transformer is connected with transformer and asynchronous machine.
3. according to claim 1 a kind of with the transformer and asynchronous machine comprehensive experiment table that select with protection device,
Characterized in that, described experiential function select button (1) is normally opened button.
4. according to claim 1 a kind of with the transformer and asynchronous machine comprehensive experiment table that select with protection device,
Characterized in that, described experiential function select button (1) is connected by binding post with processor (2).
5. according to claim 1 a kind of with the transformer and asynchronous machine comprehensive experiment table that select with protection device,
Characterized in that, described warning and protection device (4) include audible-visual annunciator and relay, described audible-visual annunciator and place
Reason device (2) connection, described relay is connected respectively with processor (2), the power supply of transformer and the power supply of asynchronous machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620698799.0U CN206134052U (en) | 2016-07-05 | 2016-07-05 | Transformer and asynchronous machine comprehensive experiment platform with select and protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620698799.0U CN206134052U (en) | 2016-07-05 | 2016-07-05 | Transformer and asynchronous machine comprehensive experiment platform with select and protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206134052U true CN206134052U (en) | 2017-04-26 |
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ID=58561188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620698799.0U Expired - Fee Related CN206134052U (en) | 2016-07-05 | 2016-07-05 | Transformer and asynchronous machine comprehensive experiment platform with select and protection device |
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| Country | Link |
|---|---|
| CN (1) | CN206134052U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107329016A (en) * | 2017-07-20 | 2017-11-07 | 中国三冶集团有限公司 | A kind of novel transformer group and current phase experimental bench and experimental method |
| CN110989398A (en) * | 2019-12-12 | 2020-04-10 | 广州高谱技术有限公司 | Electrical control circuit simulation system |
-
2016
- 2016-07-05 CN CN201620698799.0U patent/CN206134052U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107329016A (en) * | 2017-07-20 | 2017-11-07 | 中国三冶集团有限公司 | A kind of novel transformer group and current phase experimental bench and experimental method |
| CN107329016B (en) * | 2017-07-20 | 2023-09-08 | 中国三冶集团有限公司 | Novel transformer group and current phase experiment table and experiment method |
| CN110989398A (en) * | 2019-12-12 | 2020-04-10 | 广州高谱技术有限公司 | Electrical control circuit simulation system |
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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: 20170426 Termination date: 20210705 |