CN203838195U - Voltage regulating device and wiring circuit used for electric power-frequency voltage-withstand test - Google Patents
Voltage regulating device and wiring circuit used for electric power-frequency voltage-withstand test Download PDFInfo
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- CN203838195U CN203838195U CN201420133636.9U CN201420133636U CN203838195U CN 203838195 U CN203838195 U CN 203838195U CN 201420133636 U CN201420133636 U CN 201420133636U CN 203838195 U CN203838195 U CN 203838195U
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- 230000001105 regulatory effect Effects 0.000 title claims abstract description 26
- 238000005259 measurement Methods 0.000 claims abstract description 27
- 238000010586 diagram Methods 0.000 description 6
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Abstract
The utility model provides a voltage regulating device and a wiring circuit used for an electric power-frequency voltage-withstand test and belongs to the technical field of electric tests. The utility model especially relates to the voltage regulating device used for the electric power-frequency voltage-withstand test. The voltage regulating device used for the electric power-frequency voltage-withstand test is stable in structure and small in output waveform distortion. The voltage regulating device includes a sine-wave voltage regulating module (that may be of the specification of FZXB2000 provided by Shanghai Fushen Electronic technology Co., Ltd.), a microcomputer control module, an operation panel, a switch power source, a high-voltage current analog-digital converter, a high-voltage voltage analog-digital converter, a low-voltage current analog-digital converter, a low-voltage voltage analog-digital converter, a high-voltage current connection wire, a high-voltage measurement wire and a test voltage transformer low-voltage wire. The structural key point is that the port of the microcomputer control module is connected with ports of the sine-wave voltage regulating module, the operation panel, the switch power source, the high-voltage current analog-digital converter, the high-voltage voltage analog-digital converter, the low-voltage current analog-digital converter and the low-voltage voltage analog-digital converter respectively.
Description
Technical field
the utility model belongs to electrical test technical field, relates in particular to a kind of electronic working frequency withstand voltage test regulator.
Background technology
according to power industry standard, the regulator that power frequency withstand test needs at least needs two voltage tables, two reometers, a pressure regulator.Equipment set heavy (being greater than 20 kilograms), field wiring is simultaneously various, affects test efficiency.Test unit in the market has respectively heavy, integrated low, the shortcoming such as robotization is low of testing equipment.
Summary of the invention
the utility model is exactly for the problems referred to above, the electronic working frequency withstand voltage test regulator that provides a kind of Stability Analysis of Structures, output waveform to distort little.
for achieving the above object, the utility model adopts following technical scheme, and the utility model comprises Sinusoidal wave pressure regulating module (can adopt the FZXB2000 of Shanghai Fu Shen Electronic Science and Technology Co., Ltd.), microcomputer control module, guidance panel, Switching Power Supply, high-tension current analog to digital converter, high tension voltage analog to digital converter, low-tension current analog to digital converter, low voltage voltage analog to digital converter, high-tension current wiring, high-tension measurement line, testing transformer low-voltage line, its structural feature microcomputer control module port respectively with Sinusoidal wave pressure regulating module port, guidance panel port, Switching Power Supply port, high-tension current analog to digital converter port, high tension voltage analog to digital converter port, low-tension current analog to digital converter port, low voltage voltage analog to digital converter port is connected, high tension voltage analog to digital converter port is connected with high-tension current wiring, high tension voltage analog to digital converter port is connected with high-tension measurement line, Sinusoidal wave pressure regulating module port is connected with testing transformer low-voltage line, low voltage voltage analog to digital converter input port one end is connected with resistance R 2 one end, resistance R 2 other ends respectively with the low voltage voltage analog to digital converter input port other end, resistance R 3 one end are connected, and resistance R 3 other ends are connected with testing transformer low-voltage line, low-tension current analog to digital converter input end is connected with testing transformer low-voltage line by Hall element.
as a kind of preferred version, guidance panel described in the utility model is provided with LCDs, high-voltage bleeder interface, testing transformer low pressure input interface, high pressure end interface, function is selected district, the power switch of described Switching Power Supply, function key and numerical key panel, emergency stop push button, high-voltage bleeder interface is connected with described high-tension measurement line, testing transformer low pressure input interface is connected with described testing transformer low-voltage line, high pressure end interface is connected with described high-tension current wiring, LCDs port, function is selected district's port, function key is connected with microcomputer control module port respectively with numerical key panel port, emergency stop push button port is connected with Sinusoidal wave pressure regulating module controls port.
in addition, microcomputer control module described in the utility model comprises CPU, D/A digital to analog converter, CPU output port is connected with LCDs input port, D/A digital to analog converter input port respectively, D/A digital to analog converter output port is connected with described simple alternating current voltage regulating module input port, and CPU input port is connected with described high-tension current analog to digital converter output port, high tension voltage analog to digital converter output port, low-tension current analog to digital converter output port, low voltage voltage analog to digital converter output port, guidance panel output port respectively.
the utility model test connection circuit, comprise test specimen, transformer, high-tension measurement capacitive divider, high-voltage connection, high-tension measurement capacitive divider comprises the first electric capacity and the second electric capacity, its structural feature test specimen one end ground connection, the test specimen other end is connected with transformer primary side one end, first electric capacity one end respectively by high-voltage connection, the first electric capacity other end is connected with second electric capacity one end, high-tension measurement line one end respectively, and the second electric capacity other end is connected with the high-tension measurement line other end, ground wire respectively; The transformer primary side other end is connected with high-tension current wiring; Transformer secondary two ends are connected with testing transformer low-voltage line.
as a kind of preferred version, transformer described in the utility model is connected with testing transformer low pressure input interface, high pressure end interface by triple cable.
electronic working frequency withstand voltage test pressure regulation method, comprises the following steps.
operating personnel switch on power by guidance panel and set by trial target withstand test voltage, pressure-resistant time, testing transformer no-load voltage ratio, voltage divider no-load voltage ratio and once set after automatic preservation, starting characteristics test device, the output voltage that microcomputer control module is controlled simple alternating current voltage regulating module automatically according to instruction starts to boost, the sinusoidal ac of output outputs to testing transformer low-pressure side by testing transformer low-voltage line, becomes high pressure be applied on tested device by testing transformer.
microcomputer control module reads the voltage data of high tension voltage analog to digital converter, if voltage be zero high-tension current analog to digital converter, low-tension current analog to digital converter current value normally; be judged as and do not connect high-tension measurement, the voltage data that is now automatically converted to low voltage voltage analog to digital converter is multiplied by the high tension voltage of testing transformer no-load voltage ratio conversion as the measurement data of high tension voltage.
while boosting, trial voltage automatically start from scratch by the selected rate of rise be raised to required specified trial voltage 75% after, be raised to required trial voltage with the speed of 2% specified trial voltage per second again, start according to default pressure-resistant time automatic pouring timing, test specimen execute the alive time to rear automatically within the several seconds at the uniform velocity by voltage back to zero.
in whole process of the test, microcomputer control module is monitoring all the time the numerical value of high-tension current analog to digital converter, high tension voltage analog to digital converter, low-tension current analog to digital converter, low voltage voltage analog to digital converter and is being presented in LCDs, if any abnormal (variation as unexpected in voltage or electric current increase suddenly) step-down power-off automatically (making the output voltage of Sinusoidal wave pressure regulating device reduce to zero to the control signal of Sinusoidal wave pressure regulating device by changing microcomputer control module), and point out in LCDs.
under manual voltage boosting pattern, press emergency stop push button, automatically by output voltage fly back.
the utility model beneficial effect.
the utility model adopts electronic pressure regulating mode, has replaced traditional contact type voltage regulator, and without rotating or slipper, structure is more stable, and output waveform distortion is little, wiring is simple.
single-chip microcomputer entirety is controlled, electronic pressure regulating; Comprise buck, there is high-low pressure voltage and current measurement, over-voltage over-current protection design.
utilize analog to digital converter to change the analogue value of the electric current of mining height, low-pressure side and magnitude of voltage into digital signal and send microcomputer control module to, microcomputer control module is by the voltage of these signal controlling Sinusoidal wave pressure regulating device outputs.
the complete regulator of the program control power frequency withstand test of Electron portable does not have traditional contact type voltage regulator, and volume is little, lightweight, waveform is perfect, automaticity is high, integrated level is high, practical, novel in design, simple to operate.
Brief description of the drawings
below in conjunction with the drawings and specific embodiments, the utility model is described further.The utility model protection domain is not only confined to the statement of following content.
fig. 1 is the utility model one-piece construction schematic diagram.
fig. 2 is guidance panel schematic diagram of the present utility model.
fig. 3 is test connection schematic diagram of the present utility model.
fig. 4 is brief test wiring schematic diagram of the present utility model.
fig. 5 is the utility model microcomputer control module schematic diagram.
Embodiment
as shown in the figure, the utility model is a kind of regulator of power frequency withstand test, inner integrated high-and-low-voltage voltage and current measurement, pressure regulator, over-voltage over-current protection device.The utility model is inner to be connected as illustrated in fig. 1 and 2, at automatic mode at present, operating personnel switch on power by guidance panel 3 and set by trial target withstand test voltage (pressure-resistant time, testing transformer no-load voltage ratio, the parameters such as voltage divider no-load voltage ratio are once set automatic preservation) after, starting characteristics test device, the output voltage that microcomputer control module 2 is controlled simple alternating current voltage regulating module 1 automatically according to instruction starts to boost, the sinusoidal ac of output outputs to testing transformer low-pressure side by testing transformer low-voltage line 11, becoming high pressure by testing transformer is applied on tested device.Microcomputer control module 2 reads the voltage data of high tension voltage analog to digital converter 6, if voltage be zero high-tension current analog to digital converter 5, low-tension current analog to digital converter 7 current value normally; be judged as and do not connect high-tension measurement, the voltage data that is now automatically converted to low voltage voltage analog to digital converter 8 is multiplied by the high tension voltage of testing transformer no-load voltage ratio conversion as the measurement data of high tension voltage.While boosting trial voltage automatically start from scratch by the selected rate of rise be raised to required specified trial voltage 75% after, be raised to required trial voltage with the speed of 2% specified trial voltage per second again, start according to default pressure-resistant time automatic pouring timing, test specimen execute the alive time to rear automatically within the several seconds at the uniform velocity by voltage back to zero.In whole process of the test, microcomputer control module 2 is monitoring all the time the numerical value of high-tension current analog to digital converter 5, high tension voltage analog to digital converter 6, low-tension current analog to digital converter 7, low voltage voltage analog to digital converter 8 and is being presented in LCDs 12, if any abnormal automatic step-down power-off, and point out in LCDs 12.
shown in guidance panel Fig. 2 of the present utility model, be used for realizing the setting of the functions such as trial voltage, pressure-resistant time, testing transformer no-load voltage ratio, voltage divider no-load voltage ratio, over-voltage over-current protection, and can be switched to manual voltage boosting pattern.Also there is emergency stop push button 18, as long as no matter press 18 devices of emergency stop push button automatically by output voltage fly back under automatic boosting pattern and manual voltage boosting pattern, ensure the safety of operating personnel and test specimen.
test connection of the present utility model as shown in Figure 3, the in the situation that of external high-tension measurement voltage divider, high-tension measurement capacitive divider 21 and test specimen 19 are connected on high-voltage connection 22, the signal wire of high-tension measurement capacitive divider 21 connects high-voltage bleeder interface 13, high-voltage bleeder interface 13 is a two core plug, the interior high-tension measurement line 10 that connects.The input of testing transformer low pressure and high pressure end interface 14 are a three-prong plug, interior high-tension current wiring 9 and the testing transformer low-voltage line 11 of connecting.Low pressure and transformer end triple cable 23 are connected in the low pressure input and high pressure end terminals of testing transformer 20 of the program control power frequency withstand test regulator 24 of Electron portable.
in simple and easy wiring (without external high-tension measurement voltage divider) as shown in Figure 4, only need low pressure and transformer end triple cable 23 connecting electronic Portable program control power frequency withstand test regulator 24 and testing transformers 20; The 13 not wiring of high-voltage bleeder interface.
microcomputer control module schematic diagram of the present utility model is as Fig. 5, CPU(single-chip microcomputer) the input instruction of read operation panel 3, send digital signal to D/A digital to analog converter through calculating, D/A digital to analog converter is converted into analog voltage by the signal of reception and exports to simple alternating current voltage regulating module 1, after testing transformer 20, become high voltage, the voltage signal VH that high-tension measurement capacitive divider 21 records sends to CPU by A/D 6 analog to digital converters, low-pressure side voltage signal VL sends to CPU by A/D 8 analog to digital converters, high voltage side current signal IH sends to CPU by A/D 5 analog to digital converters, low-pressure side current signal IL sends to CPU by A/D 7 analog to digital converters, judge tested device state by these four signals, the mode of connection, regulator state, CPU adjusts the digital signal that sends to D/A digital to analog converter, realize the closed-loop control of voltage, the instantaneous value of high and low pressure side voltage and current is presented in LCDs 12.
the utility model adopts electronic pressure regulating mode, has replaced traditional contact type voltage regulator, and without rotating or slipper, structure is more stable, and output waveform distortion is little.Lower of normal condition needs input trial voltage can carry out withstand voltage test, and automatic lifting is pressed, and operates very easyly, and wiring is simple, and test efficiency is high.The utility model length, width and height are respectively that 400mm*300mm*200mm volume is little, and lightweight Whole Equipment weight is less than 5 kilograms, are convenient to mobile, safe.Production cost of the present utility model is low simultaneously, is particularly suitable for the generally outfit of test teams and groups of power industry basic unit.
be understandable that, above about specific descriptions of the present utility model, only for being described, the utility model is not limited to the described technical scheme of the utility model embodiment, those of ordinary skill in the art is to be understood that, still can modify or be equal to replacement the utility model, to reach identical technique effect; Use needs as long as meet, all within protection domain of the present utility model.
Claims (5)
1.
electronic working frequency withstand voltage test regulator, comprises Sinusoidal wave pressure regulating module, microcomputer control module, guidance panel, Switching Power Supply, high-tension current analog to digital converter, high tension voltage analog to digital converter, low-tension current analog to digital converter, low voltage voltage analog to digital converter, high-tension current wiring, high-tension measurement line, testing transformer low-voltage line, it is characterized in that microcomputer control module port respectively with Sinusoidal wave pressure regulating module port, guidance panel port, Switching Power Supply port, high-tension current analog to digital converter port, high tension voltage analog to digital converter port, low-tension current analog to digital converter port, low voltage voltage analog to digital converter port is connected, high tension voltage analog to digital converter port is connected with high-tension current wiring, high tension voltage analog to digital converter port is connected with high-tension measurement line, Sinusoidal wave pressure regulating module port is connected with testing transformer low-voltage line, low voltage voltage analog to digital converter input port one end is connected with resistance R 2 one end, resistance R 2 other ends respectively with the low voltage voltage analog to digital converter input port other end, resistance R 3 one end are connected, and resistance R 3 other ends are connected with testing transformer low-voltage line, low-tension current analog to digital converter input end is connected with testing transformer low-voltage line by Hall element.
2.
electronic working frequency withstand voltage test regulator according to claim 1, it is characterized in that described guidance panel is provided with LCDs, high-voltage bleeder interface, testing transformer low pressure input interface, high pressure end interface, function is selected district, the power switch of described Switching Power Supply, function key and numerical key panel, emergency stop push button, high-voltage bleeder interface is connected with described high-tension measurement line, testing transformer low pressure input interface is connected with described testing transformer low-voltage line, high pressure end interface is connected with described high-tension current wiring, LCDs port, function is selected district's port, function key is connected with microcomputer control module port respectively with numerical key panel port, emergency stop push button port is connected with Sinusoidal wave pressure regulating module controls port.
3.
electronic working frequency withstand voltage test regulator according to claim 2, it is characterized in that described microcomputer control module comprises CPU, D/A digital to analog converter, CPU output port respectively with LCDs input port, D/A digital to analog converter input port is connected, D/A digital to analog converter output port is connected with described simple alternating current voltage regulating module input port, CPU input port respectively with described high-tension current analog to digital converter output port, high tension voltage analog to digital converter output port, low-tension current analog to digital converter output port, low voltage voltage analog to digital converter output port, guidance panel output port is connected.
4.
electronic working frequency withstand voltage test connection circuit, it is characterized in that comprising test specimen, transformer, high-tension measurement capacitive divider, high-voltage connection, high-tension measurement capacitive divider comprises the first electric capacity and the second electric capacity, its structural feature test specimen one end ground connection, the test specimen other end is connected with transformer primary side one end, first electric capacity one end respectively by high-voltage connection, the first electric capacity other end is connected with second electric capacity one end, high-tension measurement line one end respectively, and the second electric capacity other end is connected with the high-tension measurement line other end, ground wire respectively; The transformer primary side other end is connected with high-tension current wiring; Transformer secondary two ends are connected with testing transformer low-voltage line.
5.
according to claim 4, electronic working frequency withstand voltage test connection circuit, is characterized in that described transformer is connected with testing transformer low pressure input interface, high pressure end interface by triple cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420133636.9U CN203838195U (en) | 2014-03-24 | 2014-03-24 | Voltage regulating device and wiring circuit used for electric power-frequency voltage-withstand test |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420133636.9U CN203838195U (en) | 2014-03-24 | 2014-03-24 | Voltage regulating device and wiring circuit used for electric power-frequency voltage-withstand test |
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| Publication Number | Publication Date |
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| CN203838195U true CN203838195U (en) | 2014-09-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420133636.9U Expired - Lifetime CN203838195U (en) | 2014-03-24 | 2014-03-24 | Voltage regulating device and wiring circuit used for electric power-frequency voltage-withstand test |
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| CN (1) | CN203838195U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104950149A (en) * | 2014-03-24 | 2015-09-30 | 国家电网公司 | Electronic power-frequency voltage-withstand test voltage-regulating device, test wiring circuit and test voltage-regulating method |
| CN108646158A (en) * | 2018-08-16 | 2018-10-12 | 国网山西省电力公司临汾供电公司 | Partial discharge detecting system for the experiment of high-tension switch cabinet ac voltage withstanding |
| CN110749789A (en) * | 2019-10-14 | 2020-02-04 | 北京汽车股份有限公司 | High-voltage output closed-loop control device, method and equipment of safety test equipment |
-
2014
- 2014-03-24 CN CN201420133636.9U patent/CN203838195U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104950149A (en) * | 2014-03-24 | 2015-09-30 | 国家电网公司 | Electronic power-frequency voltage-withstand test voltage-regulating device, test wiring circuit and test voltage-regulating method |
| CN104950149B (en) * | 2014-03-24 | 2018-04-20 | 国家电网公司 | Electronic working frequency pressure test regulator, test connection circuit and experiment pressure regulation method |
| CN108646158A (en) * | 2018-08-16 | 2018-10-12 | 国网山西省电力公司临汾供电公司 | Partial discharge detecting system for the experiment of high-tension switch cabinet ac voltage withstanding |
| CN110749789A (en) * | 2019-10-14 | 2020-02-04 | 北京汽车股份有限公司 | High-voltage output closed-loop control device, method and equipment of safety test equipment |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140917 |