CN209673942U - Withstand test device based on high-voltage digital power supply - Google Patents
Withstand test device based on high-voltage digital power supply Download PDFInfo
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- CN209673942U CN209673942U CN201920085295.5U CN201920085295U CN209673942U CN 209673942 U CN209673942 U CN 209673942U CN 201920085295 U CN201920085295 U CN 201920085295U CN 209673942 U CN209673942 U CN 209673942U
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Abstract
The utility model relates to a kind of Withstand test devices based on high-voltage digital power supply, including, isolating transformer, industrial personal computer, the high-voltage digital power supply being connect with industrial personal computer, the output end of the high-voltage digital power supply is connect with exciting transformer, and it is used for output frequency and the adjustable voltage of amplitude, the output end of the exciting transformer is connect by LC series resonant circuit with test article, and the LC series resonant circuit is also connect with industrial personal computer；The input of the isolating transformer is connect with power grid, and the output of isolating transformer is connect by industrial personal computer with high-voltage digital power supply, and the industrial personal computer is configured to receive the feedback signal of LC series resonant circuit, and controls the output of high-voltage digital power supply.The utility model can export purer, standard amplitude using high-voltage digital power supply, frequency is continuously adjusted sine voltage, to improve test accuracy, reach better test effect, and have the characteristics of small in size, conveniently moving.
Description
Technical field
The utility model relates to high pressure resistant experimental rig, especially a kind of pressure test dress based on high-voltage digital power supply
It sets.
Background technique
Along with the development of China's high-speed rail cause, people's choice for traveling, which takes EMU, has become very universal, to guarantee
The safety of EMU needs to carry out high pressure resistant test, wherein pressure test to the high-tension cable of EMU before EMU factory
Device is a kind of effective means detected to EMU high-voltage cable insulating performance, is tried in previous EMU resistance test
In testing, since technology is not mature enough, equipment is simple, compression-proof manner is traditional, so leading to experimental data during pressure test
Not enough precisely, operating process is cumbersome, and part damage easy to aging, bulky movement is not easy, and security performance is low, gives pressure test band
Great inconvenience is carried out, therefore the safety of pressure test, convenience, accuracy, high efficiency are that one faced now has
Problem to be hoisted.
Given this utility model is proposed.
Utility model content
The purpose of the utility model is to overcome the deficiencies in the prior art, provide a kind of pressure resistance based on high-voltage digital power supply
Experimental rig can export the continuously adjustable sine voltage of purer, standard amplitude, frequency using high-voltage digital power supply,
To improve test accuracy, reach better test effect, and there is the characteristics of small in size, conveniently moving.
In order to realize the purpose, the utility model adopts the following technical solution:
A kind of Withstand test device based on high-voltage digital power supply, including, isolating transformer, industrial personal computer connect with industrial personal computer
The output end of the high-voltage digital power supply connect, the high-voltage digital power supply is connect with exciting transformer, and is used for output frequency and width
It is worth adjustable voltage, the output end of the exciting transformer is connect by LC series resonant circuit with test article, described
LC series resonant circuit is also connect with industrial personal computer；The input of the isolating transformer is connect with power grid, the output of isolating transformer
It is connect by industrial personal computer with high-voltage digital power supply, the alternating voltage of input is converted to frequency and amplitude by the high-voltage digital power supply
Adjustable sinusoidal voltage, and it is input to exciting transformer, sinusoidal voltage of the exciting transformer to input
It boosts, and is delivered to LC series resonant circuit, the LC series resonant circuit is used to generate resonance, and on test article
Resonance potential is obtained, the industrial personal computer is configured to receive the feedback signal of LC series resonant circuit, and to high-voltage digital power supply
Output is controlled.
Further, the high-voltage digital power supply includes main circuit and control circuit；
The main circuit includes sequentially connected rectification circuit, DC filtering circuit, inverter circuit and filter circuit；
The control circuit include the voltage detecting circuit and current detection circuit being connect with the output end of filter circuit,
The dsp controller connecting respectively with voltage detecting circuit and current detection circuit, the dsp controller is for generating SPWM control
Signal, and pass sequentially through photoelectric isolating circuit and Drive Protecting Circuit is connect with inverter circuit；
The dsp controller also passes through serial ports and connect with industrial computer communication.
Further, the LC series resonant circuit includes the REgulatable reactor and capacitive divider of series connection, the electricity
Hold divider to be connected in parallel with test article, the industrial personal computer is connect with capacitive divider, is applied on test article with acquisition
Voltage signal；The output end and REgulatable reactor of the exciting transformer are connected in series.
Further, the both ends of the test article are also parallel with compensating electric capacity.
It further, further include display screen, accessory power supply, wireless camera and remote operation terminal, the remote operation is eventually
End is connected with industrial personal computer wireless communication, and the wireless camera is connect with industrial personal computer, and is being tested for acquiring test article
Image information in journey, the accessory power supply are used to power for wireless camera, industrial personal computer, and the display screen and industrial personal computer connect
It connects, the image that the parameter and wireless camera for showing industrial personal computer obtain.
Further, the display screen is touch display screen, and is at least two, wherein one is used for and adjusts display industry control
The operating parameter of machine, an image obtained for real-time display wireless camera.
Further, the cabinet of the exciting transformer uses honeycomb structure, and the bottom of box is equipped with rubber pad.
After technical solution described in the utility model, bring it is following the utility model has the advantages that
1, the utility model improves output voltage precision by high-voltage digital power supply, reduces high-frequency harmonic to resonance circuit
Influence, can accurately detect EMU high-voltage cable insulating performance, reduce the damage to cable, can according to different automobile types and
Workshop situation selection scene or the mode remotely controlled carry out pressure test, safety with higher.
2, the utility model rubber pad of exciting transformer bottom when carrying out pressure test can reduce vibration, eliminate and make an uproar
Sound, exciting transformer cabinet honeycomb structure also contribute to reducing noise, reinforce anti-interference ability.
3, the utility model is controlled by industrial personal computer, improves the data-handling capacity of pressure test, by wirelessly taking the photograph
As head can monitor pressure test scene and the resistance to pressure condition of detection cable in real time.
In conclusion the utility model can sufficiently meet the extra-high pressure test of EMU high-tension cable, accurate detection electricity
Cable insulation performance, the pressure test suitable for EMU high-tension cable.
Detailed description of the invention
Fig. 1: the system block diagram of the utility model；
Fig. 2: the partial circuit schematic diagram of the utility model；
Fig. 3: the schematic diagram of the utility model high-voltage digital power supply；
Wherein: 1, isolating transformer 2, industrial personal computer 3, high-voltage digital power supply 4, exciting transformer 5, REgulatable reactor
6, voltage-dividing capacitor 7, test article 8, compensating electric capacity.
Specific embodiment
Specific embodiment of the present utility model is described in further detail with reference to the accompanying drawing.
As shown in Figure 1 and Figure 2, a kind of Withstand test device based on high-voltage digital power supply, including, isolating transformer 1, work
Control machine 2, high-voltage digital power supply 3, exciting transformer 4, LC series resonant circuit, display screen, accessory power supply, wireless camera and remote
Journey operating terminal.The input of the isolating transformer 1 is connect with power grid, and the output of isolating transformer 1 passes through industrial personal computer 2 and high pressure
Digital power 3 connects, and the output end of the high-voltage digital power supply 3 is connect with exciting transformer 4, and is used for output frequency and amplitude
The output end of adjustable voltage, the exciting transformer 4 is connect by LC series resonant circuit with test article 7, described
LC series resonant circuit is also connect with industrial personal computer 2, for voltage signal to be fed back to industrial personal computer 2.
As shown in figure 3, the high-voltage digital power supply 3 is configured to the 380V alternating voltage of input being converted to frequency and amplitude
Adjustable sinusoidal voltage, and it is input to exciting transformer 4, specifically, high-voltage digital power supply 3 includes main circuit and control
Circuit processed；The main circuit includes sequentially connected rectification circuit, DC filtering circuit, inverter circuit and filter circuit.It is described
Control circuit include the voltage detecting circuit and current detection circuit being connect with the output end of filter circuit, respectively with voltage examine
The dsp controller that slowdown monitoring circuit is connected with current detection circuit, the dsp controller control signal for generating SPWM, and successively
It is connect by photoelectric isolating circuit and Drive Protecting Circuit with inverter circuit；The dsp controller also passes through serial ports and industrial personal computer 2
Communication connection.The course of work of high-voltage digital power supply 3 is that the rectified circuit of 380V alternating current and DC filtering circuit conversion are steady
Inverter circuit is supplied after fixed DC voltage, inverter circuit is the Key Circuit of the power supply, and function is acted in driving signal
The lower direct current by after rectifying and wave-filtering becomes the adjustable alternating current of voltage, frequency, and sinusoidal voltage is then exported after filtering
Exciting transformer 4 is supplied, the electric current and voltage of output give DSP control after overvoltage detection circuit and current detection circuit sampling
Device processed, dsp controller export revised SPWM control signal after control algolithm is handled to sampled signal, keep output voltage steady
It is scheduled in set desired value.
The sinusoidal voltage of 4 pairs of exciting transformer inputs boosts, and is delivered to LC series resonant circuit, In
When carrying out cable voltage test, required voltage value may be not achieved in the voltage that high-voltage digital power supply 3 directly exports, and pass through excitation
The voltage of the output of high-voltage digital power supply 3 is raised to suitable test voltage by transformer 4, to meet the requirement of test.
The LC series resonant circuit obtains resonance potential for generating resonance on test article 7, specifically, institute
Stating LC series resonant circuit includes, the REgulatable reactor 5 and capacitive divider 6 of series connection, the capacitive divider 6 and subject
It tests product 7 to be connected in parallel, the industrial personal computer 2 is connect with capacitive divider 6, to acquire the voltage signal being applied on test article 7；
The output end and REgulatable reactor 5 of the exciting transformer 4 are connected in series.
REgulatable reactor 5 is the important component of resonant tank, determines system resonance with the size of 7 capacitance of test article
The size of frequency.When 3 output frequency of high-voltage digital power supply is equal to system resonance frequencies, series resonance occurs for circuit.
It, just must be to being tested to make the voltage on test article 7 reach test voltage when carrying out pressure test to cable
7 voltage of product measures.Capacitive divider 6 is exactly the test device of 7 voltage of test article, it is by high-voltage arm C1 and low-voltage arm C2
Composition, measuring signal are drawn from low-voltage arm C2, are used as 7 measurement and protection signal of test article.Since capacitive divider 6 is
It is in parallel with test article 7, so capacitive divider 6 is also a part loaded in series resonant tank, held with test article 7
By same big voltage value, thus the voltage rating of the capacitive divider 6 to be selected answer it is larger.
Preferably, the both ends of the test article 7 are also parallel with compensating electric capacity 8.When the equivalent capacity amount ratio of test article 7
When smaller, system resonance frequencies can exceed that 300Hz with regard to relatively high, at this moment can be by 7 both ends of test article and upper compensation
The method of capacitor 8 is reduced to system resonance frequencies within desired frequency range.
The industrial personal computer 2 carries out Communication Control to high-voltage digital power supply 3 by serial ports, can be realized examination on industrial personal computer 2
The setting of parameter, the monitoring of experimental phenomena and the control of various test operations are tested, industrial personal computer 2 is by receiving the anti-of capacitive divider 6
Feedback signal can carry out Real-time Feedback to the acquisition of pressure test data.Industrial personal computer 2 will be responded in real time, be adopted during the test
Collect pressure test data and save and checked for analysis, control terminates pressure test after reaching pressure-resistant time.
Specifically, the remote operation terminal and the wireless communication of industrial personal computer 2 connect, and can remotely be grasped to industrial personal computer 2
Make, the wireless camera is connect with industrial personal computer 2, and for acquiring the image information of test article 7 during the test, described
Accessory power supply is used to power for wireless camera, industrial personal computer 2, and the display screen is connect with industrial personal computer 2, for showing industrial personal computer 2
Parameter and wireless camera obtain image.
Preferably, the display screen is touch display screen, and is at least two, wherein one is used for and adjusts display industry control
The operating parameter of machine 2, an image obtained for real-time display wireless camera.
Preferably, the cabinet of the exciting transformer 4 uses honeycomb structure, and the bottom of box is equipped with rubber pad, is made an uproar with reducing
Sound reinforces anti-interference ability.
The test process of the utility model are as follows:
Firstly, AC380V voltage accesses high-voltage digital power supply 3,3 output frequency of high-voltage digital power supply by isolating transformer 1
With the adjustable voltage of amplitude.3 output voltage amplitude of high-voltage digital power supply is first transferred to a lesser value, by excitation transformation
Device 4 acts on REgulatable reactor 5 and capacitive divider 6 after tentatively boosting, and then adjusts the output of high-voltage digital power supply 3 again
The frequency of voltage makes REgulatable reactor 5 and capacitive divider 6 that resonance occur, obtains resonance potential on test item cable, this electricity
Pressure is Q times of 4 output voltage of exciting transformer, finally adjusts the output voltage amplitude of high-voltage digital power supply 3, keeps test article electric
Voltage on cable reaches the required voltage of ac voltage withstanding test and completes pressure test.It can pass through during entire pressure test
Touch display screen carries out the operations such as the boosting of pressure test, decompression, point rises, point drops, emergency stop, starting, stopping, reset, passes through work
The acquisition and control of the progress pressure test data of control machine 2.
The above is the embodiments of the present invention, it is noted that for the ordinary skill in the art,
Under the premise of not departing from the utility model principle, various deformation and improvement can also be made, this also should be considered as the utility model
Protection scope.
Claims (7)
1. a kind of Withstand test device based on high-voltage digital power supply, it is characterised in that: including, isolating transformer, industrial personal computer, with
The high-voltage digital power supply of industrial personal computer connection, the output end of the high-voltage digital power supply are connect with exciting transformer, and for exporting
The output end of frequency and the adjustable voltage of amplitude, the exciting transformer is connected by LC series resonant circuit and test article
It connects, the LC series resonant circuit is also connect with industrial personal computer；The input of the isolating transformer is connect with power grid, isolating transformer
Output connect with high-voltage digital power supply by industrial personal computer, the alternating voltage of input is converted to frequency by the high-voltage digital power supply
With the adjustable sinusoidal voltage of amplitude, and it is input to exciting transformer, the exciting transformer hands over the sine of input
Galvanic electricity pressure is boosted, and is delivered to LC series resonant circuit, and the LC series resonant circuit is being tested for generating resonance
It tests and obtains resonance potential on product, the industrial personal computer is configured to receive the feedback signal of LC series resonant circuit, and to high-voltage digital
The output of power supply is controlled.
2. the Withstand test device according to claim 1 based on high-voltage digital power supply, it is characterised in that:
The high-voltage digital power supply includes main circuit and control circuit；
The main circuit includes sequentially connected rectification circuit, DC filtering circuit, inverter circuit and filter circuit；
The control circuit includes the voltage detecting circuit and current detection circuit connecting with the output end of filter circuit, difference
The dsp controller connecting with voltage detecting circuit and current detection circuit, the dsp controller is for generating SPWM control letter
Number, and pass sequentially through photoelectric isolating circuit and Drive Protecting Circuit is connect with inverter circuit；
The dsp controller also passes through serial ports and connect with industrial computer communication.
3. the Withstand test device according to claim 2 based on high-voltage digital power supply, it is characterised in that: the LC series connection
Resonance circuit includes the REgulatable reactor and capacitive divider of series connection, and the capacitive divider is in parallel with test article to be connected
It connects, the industrial personal computer is connect with capacitive divider, to acquire the voltage signal being applied on test article；The exciting transformer
Output end and REgulatable reactor be connected in series.
4. the Withstand test device according to claim 3 based on high-voltage digital power supply, it is characterised in that: described to be tested
The both ends of product are also parallel with compensating electric capacity.
5. the Withstand test device according to claim 1 based on high-voltage digital power supply, it is characterised in that: further include showing
Display screen, accessory power supply, wireless camera and remote operation terminal, the remote operation terminal and industrial personal computer wireless communication connect,
The wireless camera is connect with industrial personal computer, and for acquiring the image information of test article during the test, the auxiliary
Power supply is used to power for wireless camera, industrial personal computer, and the display screen connect with industrial personal computer, for show the parameter of industrial personal computer with
The image that wireless camera obtains.
6. the Withstand test device according to claim 5 based on high-voltage digital power supply, it is characterised in that: the display screen
It for touch display screen, and is at least two, wherein one is used for and adjusts the operating parameter of display industrial personal computer, one for real-time
Show the image that wireless camera obtains.
7. the Withstand test device according to claim 1 based on high-voltage digital power supply, it is characterised in that: the excitation-transformation variable
The cabinet of depressor uses honeycomb structure, and the bottom of box is equipped with rubber pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920085295.5U CN209673942U (en) | 2019-01-18 | 2019-01-18 | Withstand test device based on high-voltage digital power supply |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920085295.5U CN209673942U (en) | 2019-01-18 | 2019-01-18 | Withstand test device based on high-voltage digital power supply |
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| CN209673942U true CN209673942U (en) | 2019-11-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113394987A (en) * | 2021-06-01 | 2021-09-14 | 深圳供电局有限公司 | Capacity-adjustable power supply equipment |
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2019
- 2019-01-18 CN CN201920085295.5U patent/CN209673942U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113394987A (en) * | 2021-06-01 | 2021-09-14 | 深圳供电局有限公司 | Capacity-adjustable power supply equipment |
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