CN207281234U - A kind of DC testing of cables device - Google Patents
A kind of DC testing of cables device Download PDFInfo
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- CN207281234U CN207281234U CN201721035536.2U CN201721035536U CN207281234U CN 207281234 U CN207281234 U CN 207281234U CN 201721035536 U CN201721035536 U CN 201721035536U CN 207281234 U CN207281234 U CN 207281234U
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- voltage
- field sensor
- electric field
- testing
- control cabinet
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Abstract
The utility model discloses a kind of DC testing of cables device, includes optical electric field sensor, high-pressure connection line, DC voltage generator, signal optical fibre, insulating support rod, voltage control cabinet and photoelectric converter；Optical electric field sensor is installed at the top of insulating support rod, photoelectric converter is mounted in the inside of optical electric field sensor, photoelectric converter is connected by signal optical fibre with voltage control cabinet, voltage control cabinet is connected with DC voltage generator, DC voltage generator is connected by high-pressure connection line with optical electric field sensor, during pressure test, DC voltage generator is also connected by another high-pressure connection line with subject cable.The utility model is a kind of device for testing power cable insulation situation and power cable quality, and the apparatus structure is simple, to wild environment under when carrying out the DC break down voltage of cable and testing, be convenient for carrying, arrange and use.
Description
Technical field
It the utility model is related to power cable electric performance test field, more particularly to a kind of DC testing of cables dress
Put.
Background technology
At present, the power cable newly laid on request should make cable AC DC pressure test before putting into operation；Due to handing over
It is heavy to flow Withstand test device, in the field environment without convenient arrangement with using, therefore DC break down voltage experiment becomes test electric power
A kind of method of cable insulation situation quality.The power cable newly laid put into operation after 3~12 months, should generally do 1 time it is straight
Pressure test is flowed, is tested again by normal cycle later；In addition to self-tolerant oil charging cable circuit, other cable runs are thrown after power failure
Before fortune, it is necessary to confirm that the insulation status of cable is good.
Utility model content
The deficiency for more than, the utility model provides a kind of DC testing of cables device, can be out of office to be convenient for carrying
Convenient arrangement and use under external environment.
To reach above-mentioned purpose, the utility model adopts the following technical solution：
A kind of DC testing of cables device, includes optical electric field sensor, high-pressure connection line, DC voltage and occurs
Device, signal optical fibre, insulating support rod, voltage control cabinet and photoelectric converter；The optical electric field sensor is installed on described exhausted
Edge support bar top, the photoelectric converter are mounted in the inside of the optical electric field sensor, and the photoelectric converter passes through institute
State signal optical fibre with the voltage control cabinet to be connected, the voltage control cabinet is connected with the DC voltage generator, described straight
Stream voltage generator is connected by the high-pressure connection line with the optical electric field sensor, during pressure test, the direct current
Pressure generator is also connected by another high-pressure connection line with subject cable.
Further, possess light source inside the optical electric field sensor, polarised light is sent by detecting itself light source
Light intensity rate of change calculates high voltage direct current field intensity.
Further, the maximum range of the optical electric field sensor is 200kV, and precision is positive and negative 1%.
Further, the generation maximal pressure of the DC voltage generator is 200kV, maximum current 3mA.
Further, the length of the insulating support rod is 3 meters, meets 220kV and following pressure test requirement.
Further, the voltage control cabinet has display screen, shows direct current of the optical electric field sensor by fiber pass-back
Voltage value.
The beneficial effects of the utility model are：A kind of DC testing of cables device provided by the utility model, is examination
Test a kind of device of power cable insulation situation and power cable quality.The apparatus structure is simple, to wild environment under carry out
During the DC break down voltage experiment of cable, it is convenient for carrying, arranges and uses.
Brief description of the drawings
It is required in being described below to embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
The attached drawing used is briefly described.
Fig. 1 is the structure diagram of the utility model.
Wherein, it is labeled as shown in figure：1：Optical electric field sensor；2：High-pressure connection line；3：DC voltage generator；4：
Signal optical fibre；5：Insulating support rod；6：Voltage control cabinet；7：Photoelectric converter；8：It is tested cable.
Embodiment
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describe.Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are without creative efforts
All other embodiments obtained, shall fall within the protection scope of the present invention.
Fig. 1 is refer to, the utility model preferred embodiment provides a kind of DC testing of cables device, includes light
Learn electric-field sensor 1, high-pressure connection line 2, DC voltage generator 3, signal optical fibre 4, insulating support rod 5,6 and of voltage control cabinet
Photoelectric converter 7；Optical electric field sensor 1 is installed on the top of insulating support rod 5, and photoelectric converter 7 is sensed mounted in optical electric-field
The inside of device 1, photoelectric converter 7 are connected by the signal optical fibre 4 with voltage control cabinet 6, voltage control cabinet 6 and DC voltage
Generator 3 connects, and DC voltage generator 3 is connected by high-pressure connection line 2 with optical electric field sensor 1, during pressure test, directly
Stream voltage generator 3 is also connected by another high-pressure connection line 2 with subject cable 8.
Optical electric field sensor 1 disclosure satisfy that the optical detection working performance requirement under high-voltage dc environment, its
Inside possesses light source, and sending the light intensity rate of change of polarised light by detecting itself light source calculates high voltage direct current field intensity；Light
Learning 1 mounted inside of electric-field sensor has the photoelectric converter 7 that electric field change signal is converted to optical signal, and photoelectric converter 7 can
The high-voltage dc intensity-conversion that optical electric field sensor 1 is calculated is optical signal.Photoelectric converter 7 can be by being connected
Signal optical fibre 4 toward 6 transmission signal of voltage control cabinet, and formed detection DC high voltage electric field signal output circuit.Preferably
In embodiment, the maximum range of optical electric field sensor 1 is 200kV, and precision is positive and negative 1%.
Voltage control cabinet 6 has a display screen, voltage control cabinet 6 can to the DC output voltage of DC voltage generator 3 into
Row control, and the DC voltage numerical value that photoelectric converter 7 is returned by signal optical fibre 4 is displayed on the screen.
Alternating voltage is changed into direct current by DC voltage generator 3 by voltage doubling rectifing circuit, can pass through voltage control cabinet 6
Adjust DC voltage generator 3 sends DC voltage value, and the generation maximal pressure of DC voltage generator 3 is 200kV, maximum electricity
Flow for 3mA.
The length of insulating support rod 5 is 3 meters, can meet 220kV and following pressure test requirement.
Signal optical fibre 4 plays the role of the transmission of optical signal, the optical signal of photoelectric converter 7 can be passed to voltage control
Case 6, and signal optical fibre 4 possesses reliable insulation performance and high direct voltage terminal shortcircuit will not be caused to be grounded, and can ensure voltage
Operating personnel's safety near control cabinet 6.
The present apparatus carry out cable DC break down voltage experiment when, DC voltage generator 3 by a high-pressure connection line 2 with
Conductor inside subject cable 8 is connected, and the armouring for being tested the outside of cable 8 is grounded to be formed into a loop, and operator controls in voltage
After 6 input ac voltage of case, alternating voltage is changed into DC voltage by high voltage direct current generator 3 by voltage doubling rectifing circuit, therefore
Optical electric field sensor 1 sends the light intensity rate of change of polarised light by detecting itself light source and calculates high voltage direct current field intensity,
Electric field change signal is converted to optical signal and sends voltage control cabinet 6, voltage control to by signal optical fibre 4 by photoelectric converter 7
Case 6 processed shows DC voltage numerical value by display screen.Due to subject cable 8 and it is connected to DC voltage generator 3 and optics electricity
The high-pressure connection line 2 of field sensor 1 is equipotential, therefore the DC voltage value that voltage control cabinet 6 receives is to be tested cable 8
Suffered DC voltage value, the device by the utility model are that the DC break down voltage that cable can be achieved is tested.
A kind of DC testing of cables device provided by the utility model, is experiment power cable insulation situation and electricity
A kind of device of power cable quality.The apparatus structure is simple, to wild environment under when carrying out the DC break down voltage experiment of cable, it is convenient
Carry, arrange and use.
The above, is only specific embodiment of the present utility model, but the scope of protection of the utility model is not limited to
In this, any one skilled in the art is in the technical scope that the utility model discloses, the change that can readily occur in
Change or replace, should be covered within the scope of the utility model.Therefore, the scope of protection of the utility model should be with described
Subject to scope of the claims.
Claims (6)
- A kind of 1. DC testing of cables device, it is characterised in that：Include optical electric field sensor（1）, high-pressure connection line （2）, DC voltage generator（3）, signal optical fibre（4）, insulating support rod（5）, voltage control cabinet（6）And photoelectric converter（7）； The optical electric field sensor（1）Installed in the insulating support rod（5）Top, the photoelectric converter（7）Mounted in the light Learn electric-field sensor（1）Inside, the photoelectric converter（7）Pass through the signal optical fibre（4）With the voltage control cabinet（6） It is connected, the voltage control cabinet（6）With the DC voltage generator（3）Connection, the DC voltage generator（3）Pass through institute State high-pressure connection line（2）With the optical electric field sensor（1）It is connected, during pressure test, the DC voltage generator（3）Also Pass through another high-pressure connection line（2）With being tested cable（8）It is connected.
- 2. DC testing of cables device according to claim 1, it is characterised in that：The optical electric field sensor （1）Inside possesses light source.
- 3. DC testing of cables device according to claim 1, it is characterised in that：The optical electric field sensor （1）Maximum range be 200kV, precision is positive and negative 1%.
- 4. DC testing of cables device according to claim 1, it is characterised in that：The DC voltage generator （3）Generation maximal pressure be 200kV, maximum current 3mA.
- 5. DC testing of cables device according to claim 1, it is characterised in that：The insulating support rod（5） Length be 3 meters.
- 6. DC testing of cables device according to claim 1, it is characterised in that：The voltage control cabinet（6）Have Display screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721035536.2U CN207281234U (en) | 2017-08-18 | 2017-08-18 | A kind of DC testing of cables device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721035536.2U CN207281234U (en) | 2017-08-18 | 2017-08-18 | A kind of DC testing of cables device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207281234U true CN207281234U (en) | 2018-04-27 |
Family
ID=61983378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721035536.2U Active CN207281234U (en) | 2017-08-18 | 2017-08-18 | A kind of DC testing of cables device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207281234U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108663562A (en) * | 2018-08-07 | 2018-10-16 | 北京中科飞龙传感技术有限责任公司 | A kind of contactless cable voltage measurement sensor |
-
2017
- 2017-08-18 CN CN201721035536.2U patent/CN207281234U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108663562A (en) * | 2018-08-07 | 2018-10-16 | 北京中科飞龙传感技术有限责任公司 | A kind of contactless cable voltage measurement sensor |
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