CN206832926U - For searching cable fault and carrying out the integrated apparatus of alternating current-direct current voltage-withstand test - Google Patents
For searching cable fault and carrying out the integrated apparatus of alternating current-direct current voltage-withstand test Download PDFInfo
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- CN206832926U CN206832926U CN201720368087.7U CN201720368087U CN206832926U CN 206832926 U CN206832926 U CN 206832926U CN 201720368087 U CN201720368087 U CN 201720368087U CN 206832926 U CN206832926 U CN 206832926U
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- voltage
- cable fault
- direct current
- alternating current
- withstand test
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Abstract
The utility model discloses a kind of integrated apparatus for being used to search cable fault and carry out alternating current-direct current voltage-withstand test, including：For controlling the main circuit control device of main circuit power folding, for adjusting the size thyristor voltage regulator of voltage, transformer and ball-gap discharge device, the main circuit control device, size thyristor voltage regulator, transformer, ball-gap discharge device is electrically connected with successively, the ball-gap discharge device is electrically connected at measured object, also include being used for the first voltage table for detecting voltage after transformer boost, and for detecting the first ammeter of secondary coil side electric current after transformer boost, also include a leakage current table for being electrically connected at measured object, detected for the pressure-resistant Leakage Current of alternating current-direct current to measured object.The utility model belongs to cable fault and alternating current-direct current voltage-withstand test technical field, solves the problems, such as that Cable fault examination equipment detection accuracy is high in the prior art, poor anti jamming capability, function are single.
Description
Technical field
Cable fault and alternating current-direct current voltage-withstand test technical field are the utility model is related to, more particularly to it is a kind of for searching electricity
Cable failure and the integrated apparatus for carrying out alternating current-direct current voltage-withstand test.
Background technology
At present, subject matter existing for the cable fault detecting device of in the market is：（1）Partial cables fault locator is not
Main frame is equipped with, main frame oneself will configure, and applicability is not strong, and increases expense；（2）Cable fault detection instrument failure wave-recording, sentence
Disconnected device judges inaccurate, poor anti jamming capability；（3）Dependence of the failure instrument to the initial parameter of cable is big, and parameter is not complete, efficiency
Decline；（4）Most cable fault instrument can only detect to cable high resistant or low-impedance earthed system failure, it is impossible to open-circuit and short circuit event
Barrier is detected；(5) cable fault searches more skills and experiences for being to rely on testing crew；（6）It is more not possess a machine
Can feature.
Therefore, prior art has yet to be improved and developed.
Utility model content
The technical problems to be solved in the utility model is, for the drawbacks described above of prior art, there is provided one kind is used to look into
Look for cable fault and carry out the integrated apparatus of alternating current-direct current voltage-withstand test, it is intended to solve Cable fault examination equipment in the prior art
The problem of detection accuracy is not high, poor anti jamming capability, single function.
Technical scheme is as follows used by the utility model solves technical problem：
A kind of integrated apparatus for being used to search cable fault and carry out alternating current-direct current voltage-withstand test, including a switch board, institute
Stating switch board includes：
For control the main circuit control device of main circuit power folding, the size thyristor voltage regulator for adjusting voltage,
Transformer and ball-gap discharge device, the main circuit control device, size thyristor voltage regulator, transformer, ball-gap discharge device
It is electrically connected with successively, the ball-gap discharge device is electrically connected at measured object;
Also include being used for the first voltage table for detecting voltage after transformer boost, and for detecting after transformer boost time
First ammeter of level coil side electric current；The first voltage table is in parallel with transformer secondary coil side, first electricity
Flow table is connected with transformer secondary coil side;
Also include a leakage current table for being electrically connected at measured object, for the pressure-resistant Leakage Current of alternating current-direct current to measured object
Detected.
A kind of integrated apparatus for being used to search cable fault and carry out alternating current-direct current voltage-withstand test, wherein, the main circuit
Overload protection arrangement is additionally provided between control device and size thyristor voltage regulator, for carrying out overload guarantor to integrated apparatus
Shield.
A kind of integrated apparatus for being used to search cable fault and carry out alternating current-direct current voltage-withstand test, wherein, in addition to can compile
Logic controller and potentiometer are collected, the programmable logic controller and potentiometer electrically connect with the size thyristor voltage regulator
Connect, and be used to adjust the resistance of size thyristor voltage regulator.
A kind of integrated apparatus for being used to search cable fault and carry out alternating current-direct current voltage-withstand test, wherein, the editable
Logic controller is also electrically connected with ball-gap discharge device, with receives echo-signal and calculates fault distance.
A kind of integrated apparatus for being used to search cable fault and carry out alternating current-direct current voltage-withstand test, wherein, the switch board
Also include being used for the second voltage table for detecting main circuit voltage.
A kind of integrated apparatus for being used to search cable fault and carry out alternating current-direct current voltage-withstand test, wherein, the switch board
Also include LCDs, the LCDs respectively with leakage current table, the first ammeter, first voltage table, the second electricity
Table and programmable logic controller is pressed to be electrically connected with, for showing each instrument numerical value.
A kind of integrated apparatus for being used to search cable fault and carry out alternating current-direct current voltage-withstand test, wherein, the switch board
Also include an instrument calibration device, the instrument calibration device respectively with leakage current table, the first ammeter, first voltage table and
Second voltage table is electrically connected with, for carrying out school to leakage current table, the first ammeter, first voltage table and second voltage table
Just.
A kind of integrated apparatus for being used to search cable fault and carry out alternating current-direct current voltage-withstand test, wherein, the switch board
Also include a buzzer being connected with overload protection arrangement, for sending alarm signal during apparatus overload.
A kind of integrated apparatus for being used to search cable fault and carry out alternating current-direct current voltage-withstand test, wherein, the switch board
Shell be provided with ground terminal, be connected with the earthy earth lead that sets on experiment measured object, and be connected to building grounded screen.
A kind of integrated apparatus for being used to search cable fault and carry out alternating current-direct current voltage-withstand test, wherein, the switch board
Bottom, which is provided with 4, can turn to roller.
Beneficial effect：The integration provided by the utility model for being used to search cable fault and carry out alternating current-direct current voltage-withstand test
Device, by size thyristor voltage regulator and transformer series, while the electricity of secondary coil side access first after transformer boost
Table and the first ammeter are pressed, and leakage current is detected by one and the leakage current table that measured object is electrically connected with, can be entered simultaneously
Row Cable fault examination and to measured object carry out alternating current-direct current voltage-withstand test, have it is simple in construction, cost is low, labor intensity is small,
The features such as accuracy is high, the breakdown judge cycle is shortened, solve Cable fault examination equipment detection accuracy in the prior art
The problem of not high, poor anti jamming capability, single function.
Brief description of the drawings
Fig. 1 is that the utility model is used to search cable fault and the integrated apparatus of progress alternating current-direct current voltage-withstand test is preferably real
Apply the structural representation of example；
Fig. 2 is the layout of each component in control panel in the utility model；
Fig. 3 is the side schematic view of the utility model integrated apparatus.
Embodiment
To make the purpose of this utility model, technical scheme and advantage clearer, clear and definite, develop simultaneously implementation referring to the drawings
The utility model is further described example.It should be appreciated that specific embodiment described herein is only explaining this reality
With new, it is not used to limit the utility model.
Fig. 1 is referred to, Fig. 1 is used to search the one of cable fault and progress alternating current-direct current voltage-withstand test to be described in the utility model
Body apparatus structure schematic diagram, as shown in figure 1, the integration for being used to search cable fault and carry out alternating current-direct current voltage-withstand test
Device, including a switch board 1, the switch board 1 specifically include：
For controlling the main circuit control device 2 of main circuit power folding, the size thyristor voltage regulator for adjusting voltage
3rd, transformer 4 and ball-gap discharge device 5, the main circuit control device 2, size thyristor voltage regulator 3, transformer 4, ball gap are put
Electric installation 5 is electrically connected with successively, and the ball-gap discharge device 5 is electrically connected at measured object；
Also include being used for the first voltage table 6 for detecting voltage after transformer boost, and for detecting transformer boost after
First ammeter 7 of secondary coil side electric current；The first voltage table 6 is in parallel with the secondary coil side of transformer 4, and described
One ammeter 7 is connected with the secondary coil side of transformer 4；
Also include a leakage current table 8 for being electrically connected at measured object, for the pressure-resistant leakage electricity of the alternating current-direct current to measured object
Stream is detected.
Main circuit control device 2 is closed, and switches on power, and the electricity after transformer 4 boosts is adjusted by size thyristor voltage regulator 3
Pressure, high-tension current are discharged for ball-gap discharge device 5, and after moment breakdown fault weak spot, trouble point can send the sound of whip
Ring, you can know the trouble point.
Preferably, the range of the first voltage table 6 is 0V ~ 10kV, and the range of first ammeter 7 is 0A ~ 40A.
And by the way that high-tension current after boosting is directly accessed into measured object, by the voltage value shown by first voltage table 6,
Current values shown by first ammeter 7, and leakage current shown by the leakage current table 8 being electrically connected with measured object are big
It is small, you can alternating current-direct current voltage-withstand test is carried out to measured object.When therefore occurring without cable fault, the utility model can carry out electric power and set
The electrical test of the lightning arresters such as the valve-type such as standby ac voltage withstanding, DC break down voltage and leakage current and FCD, FZ, FS, magnetic blow-out
Work.
Therefore, the utility model has been provided simultaneously with the function of Cable fault examination and high voltage electric equipment preventive trial,
So that using more convenient, and accuracy is improved, while reduce the occupancy in equipment investment and place, and structure letter
Singly, the features such as cost is low, labor intensity is small, accuracy is high.
Preferably, the integrated apparatus for being used to search cable fault and carry out alternating current-direct current voltage-withstand test, switch board is also
Including programmable logic controller 301 and potentiometer 302, the programmable logic controller 301 and potentiometer 302 with it is described
Size thyristor voltage regulator 3 is electrically connected with, and is used to adjust the resistance of size thyristor voltage regulator 3.The Programmadle logic control
Device 301 can input magnitude of voltage after control boosting, and then size thyristor voltage regulator 3 just can adjust automatically electricity therein as needed
Resistance size, and the potentiometer 302 can then adjust in size thyristor voltage regulator 3 resistance value manually to adjust for staff
Voltage after transformer boost.
Preferably, the programmable logic controller 301 is also electrically connected with ball-gap discharge device 5, to receive echo letter
Number and calculate fault distance.Wherein, then ball-gap discharge device 5 is filled by electrion breakdown fault point by ball-gap discharge
Put the waveform generator in 5 and send detection ripple, return to waveform signal to programmable logic controller 301, the Programmadle logic
The calculating function that fault distance is calculated based on echo-signal time of return is previously stored with controller 301, then according to echo
The time that signal returns, you can quickly calculate trouble point distance.
Preferably, the transformer 4 is 50kVA oil-filled transformers, and it includes current input terminal and output end and instrument
Table feedback device, so that when occurring without cable fault, the utility model can be carried out below 6kV systems 1000kVA
The lightning-arrest dresses such as valve-type, the magnetic blow-out such as ac voltage withstanding, DC break down voltage and the leakage current of power equipment, below 35kV FCD, FZ, FS
The electrical test work put.
The main circuit control device 2 is used for the folding for controlling integrated apparatus main power source, it is preferable that is controlled in main circuit
Second voltage table 9 is set in device 2, and the second voltage table 9 is used to detect main circuit voltage, to show that main power circuit is
No connection, while also the voltage of main circuit is monitored.Preferably, the range of the second voltage table 9 is 0V ~ 300V.
Preferably, it is additionally provided with overload protection arrangement between the main circuit control device 2 and size thyristor voltage regulator 3
10, for carrying out overload protection to integrated apparatus, when the voltage in main circuit exceedes the safety value of integrated apparatus tolerance,
Device overloads, the automatic connection disconnected with size thyristor voltage regulator 3.
It is highly preferred that switch board 1 also includes the buzzer and indicator lamp being connected with overload protection arrangement 10, for equipment
Beep the alarm signal such as sound and flicker during overload, to remind staff's timely processing.
The switch board also includes LCDs, the LCDs respectively with leakage current table 8, the first ammeter
7th, first voltage table 6, second voltage table 9 and programmable logic controller 301 are electrically connected with, for showing each instrument numerical value.
Preferably, the switch board also includes an instrument calibration device 11, and the instrument calibration device is electric with electric leakage respectively
Flow table 8, the first ammeter 7, first voltage table 6 and second voltage table 9 are electrically connected with, for leakage current table 8, the first electric current
Table 7, first voltage table 6 and second voltage table 9 are corrected, and so as to ensure the accuracy of each instrument, ensure the standard of testing result
True property, improve detection efficiency.
Preferably, the shell of the switch board is provided with ground terminal, and the earthy ground connection with being set on experiment measured object is led
Line is connected, and is connected to building grounded screen, for electrostatic or Leakage Current to be imported in ground.
As shown in Figures 2 and 3, the front portion of the switch board is additionally provided with a control panel 12, and the control panel 12 inclines
Tiltedly be arranged at that switch board 1 is anterior, be provided with the control panel 12 Switches ＆ buttons that several are connected with said apparatus and
LCDs, specific layout are as shown in Figure 2.
Preferably, as shown in figure 3, the switch board bottom, which is provided with 4, can turn to roller 13（Latter two turns to roller 13 not
Mark）, it is easy to equipment conveying, changes existing cable fault test equipment using fixed, carrying inconvenience, and in handling process
In easily cause the problem of apparatus body and its accessory damage.
It is used to search cable fault and the progress pressure-resistant survey of alternating current-direct current to described in the utility model with reference to specific embodiment
The integrated apparatus of examination is described further.
Embodiment：
When carrying out preventive trial to bis- times power cables of 6kV in certain Tong Ye smeltery, it is found that C phases cable produces charge and discharge
Electrical phenomena, checked through insulation and confirm cable insulation existing defects, cable is to screen layer and ground insulation 20M Ω, cable phase insulation
More than 2500M Ω, cable is there occurs high resistance earthing fault, using described in the utility model for searching cable fault and being handed over
The integrated apparatus of DC break down voltage test, DC voltage 20KV is produced, after ball-gap discharge punctures weak spot, the ripple in control system
Shape generator sends detection ripple and returns to waveform to logic way of compiling control device and calculates at about 58 meters of distance, and fault handling time is about
For 4 hours, efficiency greatly improved.
It is described in the utility model be used for search cable fault and carry out alternating current-direct current voltage-withstand test integrated apparatus, into
Work(is used for the electric preventive test work of Tong Ye smelteries, and 35kV porcelain vases through walls, arrester, electroscope, cable are carried out
AC and DC pressure test and gap discharge experiment, test data is accurate and error is in critical field, and test data meets
《People's Republic of China (PRC) Erection works of electrical installations Standard for handover test of electric equipment GB50150-2006》And《The Chinese people
Southern Power Grid Company of republic preventive trial code (Q-CSG_1_0007-2004)》It is required that.
In summary, the integration provided by the utility model for being used to search cable fault and carry out alternating current-direct current voltage-withstand test
Device, by size thyristor voltage regulator and transformer series, while the electricity of secondary coil side access first after transformer boost
Table and the first ammeter are pressed, and leakage current is detected by one and the leakage current table that measured object is electrically connected with, can be entered simultaneously
Row Cable fault examination and to measured object carry out alternating current-direct current voltage-withstand test, have it is simple in construction, cost is low, labor intensity is small,
The features such as accuracy is high, the breakdown judge cycle is shortened, solve Cable fault examination equipment detection accuracy in the prior art
The problem of not high, poor anti jamming capability, single function.
It should be appreciated that application of the present utility model is not limited to above-mentioned citing, those of ordinary skill in the art are come
Say, can according to the above description be improved or converted, all these modifications and variations should all belong to the appended power of the utility model
The protection domain that profit requires.
Claims (10)
1. a kind of integrated apparatus for being used to search cable fault and carry out alternating current-direct current voltage-withstand test, it is characterised in that including one
Switch board, the switch board include：
For controlling the main circuit control device of main circuit power folding, the size thyristor voltage regulator for adjusting voltage, transformation
Device and ball-gap discharge device, the main circuit control device, size thyristor voltage regulator, transformer, ball-gap discharge device are successively
It is electrically connected with, the ball-gap discharge device is electrically connected at measured object;
Also include being used for the first voltage table for detecting voltage after transformer boost, and for detecting secondary wire after transformer boost
Enclose the first ammeter of side electric current；The first voltage table is in parallel with transformer secondary coil side, first ammeter
Connected with transformer secondary coil side;
Also include a leakage current table for being electrically connected at measured object, carried out for the pressure-resistant Leakage Current of alternating current-direct current to measured object
Detection.
2. the integrated apparatus according to claim 1 for being used to search cable fault and carry out alternating current-direct current voltage-withstand test, its
It is characterised by, overload protection arrangement is additionally provided between the main circuit control device and size thyristor voltage regulator, for one
Carry out overload protection is put in body makeup.
3. the integrated apparatus according to claim 1 for being used to search cable fault and carry out alternating current-direct current voltage-withstand test, its
It is characterised by, the switch board also includes programmable logic controller and potentiometer, the programmable logic controller and current potential
Device is electrically connected with the size thyristor voltage regulator, and is used to adjust the resistance of size thyristor voltage regulator.
4. the integrated apparatus according to claim 3 for being used to search cable fault and carry out alternating current-direct current voltage-withstand test, its
It is characterised by, the programmable logic controller is also electrically connected with ball-gap discharge device, with receives echo-signal and calculates event
Hinder distance.
5. the integrated apparatus according to claim 1 for being used to search cable fault and carry out alternating current-direct current voltage-withstand test, its
It is characterised by, the switch board also includes being used for the second voltage table for detecting main circuit voltage.
6. the integrated apparatus according to claim 5 for being used to search cable fault and carry out alternating current-direct current voltage-withstand test, its
Be characterised by, the switch board also includes LCDs, the LCDs respectively with leakage current table, the first electric current
Table, first voltage table, second voltage table and programmable logic controller are electrically connected with, for showing each instrument numerical value.
7. the integrated apparatus according to claim 5 for being used to search cable fault and carry out alternating current-direct current voltage-withstand test, its
Be characterised by, the switch board also includes an instrument calibration device, the instrument calibration device respectively with leakage current table, first
Ammeter, first voltage table and second voltage table are electrically connected with, for leakage current table, the first ammeter, first voltage table
And second voltage table is corrected.
8. the integrated apparatus according to claim 2 for being used to search cable fault and carry out alternating current-direct current voltage-withstand test, its
It is characterised by, the switch board also includes a buzzer being connected with overload protection arrangement, for sending alarm during apparatus overload
Signal.
9. the integrated apparatus according to claim 1 for being used to search cable fault and carry out alternating current-direct current voltage-withstand test, its
It is characterised by, the shell of the switch board is provided with ground terminal, is connected with the earthy earth lead set on experiment measured object,
And it is connected to building grounded screen.
10. according to any described integration for being used to search cable fault and carry out alternating current-direct current voltage-withstand test of claim 1 ~ 9
Device, it is characterised in that the switch board bottom, which is provided with 4, can turn to roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720368087.7U CN206832926U (en) | 2017-04-10 | 2017-04-10 | For searching cable fault and carrying out the integrated apparatus of alternating current-direct current voltage-withstand test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720368087.7U CN206832926U (en) | 2017-04-10 | 2017-04-10 | For searching cable fault and carrying out the integrated apparatus of alternating current-direct current voltage-withstand test |
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| Publication Number | Publication Date |
|---|---|
| CN206832926U true CN206832926U (en) | 2018-01-02 |
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ID=60767032
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720368087.7U Active CN206832926U (en) | 2017-04-10 | 2017-04-10 | For searching cable fault and carrying out the integrated apparatus of alternating current-direct current voltage-withstand test |
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| CN (1) | CN206832926U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108594094A (en) * | 2018-07-11 | 2018-09-28 | 国网江苏省电力有限公司太仓市供电分公司 | A kind of light-duty integrated industrial frequency withstand voltage experimental rig |
| CN111965514A (en) * | 2020-08-31 | 2020-11-20 | 中国南方电网有限责任公司超高压输电公司曲靖局 | Converter valve thyristor fault positioning method and device based on same-tower double-circuit direct current |
-
2017
- 2017-04-10 CN CN201720368087.7U patent/CN206832926U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108594094A (en) * | 2018-07-11 | 2018-09-28 | 国网江苏省电力有限公司太仓市供电分公司 | A kind of light-duty integrated industrial frequency withstand voltage experimental rig |
| CN111965514A (en) * | 2020-08-31 | 2020-11-20 | 中国南方电网有限责任公司超高压输电公司曲靖局 | Converter valve thyristor fault positioning method and device based on same-tower double-circuit direct current |
| CN111965514B (en) * | 2020-08-31 | 2023-03-31 | 中国南方电网有限责任公司超高压输电公司曲靖局 | Converter valve thyristor fault positioning method and device based on same-tower double-circuit direct current |
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