CN102662116A - Portable type passive direct-current testing device for power cables - Google Patents
Portable type passive direct-current testing device for power cables Download PDFInfo
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- CN102662116A CN102662116A CN2012101416000A CN201210141600A CN102662116A CN 102662116 A CN102662116 A CN 102662116A CN 2012101416000 A CN2012101416000 A CN 2012101416000A CN 201210141600 A CN201210141600 A CN 201210141600A CN 102662116 A CN102662116 A CN 102662116A
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Abstract
The invention relates to a portable type passive direct-current testing device for power cables. The passive direct current testing device comprises a case, a voltmeter, a tramegger, a tramegger switching button, a high-voltage output cable, a high-voltage output cable conversion switch, an amperemeter, a direct-current high-voltage generator, a direct-current high-voltage generator switching button, a direct-current high-voltage generator current regulation knob, a ground terminal, a power conversion switch and a rechargeable battery, wherein the high-voltage output cable is arranged at the top end of the case and connected with the tramegger or the direct-current high-voltage generator through the cable conversion switch; the tramegger and the direct-current high-voltage generator are connected with the power conversion switch respectively through the switching buttons, and the power conversion switch is connected with the battery; and the direct-current high-voltage generator current regulation knob is used for regulating the output current of the direct-current high-voltage generator. According to the passive direct-current testing device, testing equipment on a high-voltage crossing interconnection spot of 110kV and above is simplified, the problem of no available power supply on the spot is solved, and the technical problem of unstable voltage and frequency of a power generator power supply is overcome.
Description
Technical field
The invention belongs to the testing apparatus of 110kV and above HV XLPE Power Cable, what be specifically related to is that a kind of power cable is used the portable passive direct current test apparatus.
Background technology
At present in the on-the-spot commissioning test to 110kV and above HV XLPE Power Cable; All need its cross interconnected system is carried out dependence test; Comprise sheath protector direct current 1mA, oversheath insulation resistance and the test of 10kV DC break down voltage etc., requiredly carry equipment and annex is more.The instrument that the test of this intermediate item is used mainly contains megohmmeter, high voltage direct current generator etc.; And for the scene of laying of 110kV and above high-tension cable, normal length is divided into plurality of sections in intermediate head place with oversheath at the high-tension cable more than a kilometer; And be provided with cross interconnected case; Laying on-the-spot all can't provide stable 220V AC power used for test, therefore has to by portable electric generator power supply is provided for on-the-spot test, and this power supply mode not only exists the working environment noise big; Also there are problems such as potential safety hazard and supply voltage and frequency instability in the shortcoming of work space air quality difference.
Summary of the invention
It is big to the objective of the invention is to overcome in the prior art working environment noise, and the work space air quality is poor, and working site potential safety hazard and supply voltage and frequency problem of unstable provide a kind of power cable to use the portable passive direct current test apparatus.
The present invention solves its technical matters and takes following technical scheme to realize:
A kind of power cable is used the portable passive direct current test apparatus; Comprise casing, voltage table, megohmmeter, megohmmeter shift knob, high pressure output cable, high pressure output cable switch, reometer, high voltage direct current generator, high voltage direct current generator shift knob, high voltage direct current generator current adjusting knob, ground terminal, transfer switch, rechargeable battery; Said high pressure output cable is installed in the casing top; The high pressure output cable is connected with megohmmeter through voltage table through high pressure output cable switch; The high pressure output cable is connected with high voltage direct current generator through reometer through high pressure output cable switch; Megohmmeter and high voltage direct current generator are connected with transfer switch through megohmmeter shift knob, high voltage direct current generator shift knob respectively; Transfer switch is connected with rechargeable battery is anodal, and the rechargeable battery negative pole is connected with ground terminal; Said high voltage direct current generator current adjusting knob is connected with high voltage direct current generator, regulates the output current of high voltage direct current generator.
And, be connected with external power supply socket between said transfer switch and the ground terminal.
And, said rechargeable battery is 10AH, said external power supply socket connects vehicle-mounted 12V power supply.
Advantage of the present invention and good effect are:
1, a kind of power cable of the present invention is used the portable passive direct current test apparatus, makes the testing equipment of cross interconnected system for field test of 110kV and above HV XLPE Power Cable be able to simplify.
2, the present invention has solved the situation that on-the-spot non-transformer can be used through adopting rechargeable battery or Vehicular accumulator cell as power supply.
3, the present invention has overcome the generator power supply voltage and the unsettled technical barrier of frequency of prior art through adopting rechargeable battery or Vehicular accumulator cell as power supply.
4, product weight of the present invention is light, volume is little, has greatly made things convenient for on-the-spot test work, increases work efficiency.
Description of drawings
Fig. 1 is an electrical schematic diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing the embodiment of the invention is done further detailed description:
A kind of power cable is used the portable passive direct current test apparatus; Comprise the high generator of casing 1, voltage table 2, megohmmeter 3, megohmmeter shift knob 4, high pressure output cable 5, high pressure output cable switch 6, reometer 7, direct current 8, high voltage direct current generator shift knob 9, high voltage direct current generator current adjusting knob 10, ground terminal 12, transfer switch 13, rechargeable battery 14; Said high pressure output cable is installed in the casing top; The high pressure output cable is connected with megohmmeter through voltage table through high pressure output cable switch; The high pressure output cable is connected with high voltage direct current generator through reometer through high pressure output cable switch; Megohmmeter and high voltage direct current generator are connected with transfer switch through megohmmeter shift knob, high voltage direct current generator shift knob respectively; Transfer switch is connected with rechargeable battery is anodal, and the rechargeable battery negative pole is connected with ground terminal; Said high voltage direct current generator current adjusting knob is connected with high voltage direct current generator, regulates the output current of high voltage direct current generator.
In an embodiment, be connected with external power supply socket 11 between said transfer switch and the ground terminal,, when rechargeable battery can't charge, use in order to the grafting external power supply.
In an embodiment, said rechargeable battery is 10AH, and said external power supply is vehicle-mounted 12V power supply.
In an embodiment, to megohmmeter, the high voltage direct current generator of different operating voltage, the lead-in wire that said 10AH, 12V rechargeable battery draw corresponding WV is megohmmeter or high voltage direct current generator power supply.
Application implementation step of the present invention is following:
(1) before a kind of power cable used with the portable passive direct current test apparatus at the scene, transfer switch, high pressure output cable switch all were arranged on neutral gear position, ground terminal ground connection.
(2) when using the megohmmeter test; Transfer switch, high pressure output cable switch all are arranged on megohmmeter test shelves; When the high pressure output cable be placed into high-voltage crosslinking to be tested place be ready to the test after; Press the megohmmeter shift knob and test, by voltage table, megohmmeter read test result.
(3) when using the high voltage direct current generator test, transfer switch, high pressure output cable switch all are arranged on high voltage direct current generator test gear, after the high pressure output cable is placed into high-voltage crosslinking to be tested place and is ready to test; Pressing the high voltage direct current generator shift knob tests; If output current and test request electric current have deviation, regulate current adjusting knob to 1mA, the voltage tester value U when reading the 1mA electric current; According to voltage tester numerical value; Through regulating current adjusting knob, read current value, as final testing result to 75%U voltage.
(4) after test finished, megohmmeter shift knob, high voltage direct current generator shift knob broke off, and transfer switch, high pressure output cable switch all return to neutral position.
It is emphasized that; Embodiment of the present invention is illustrative; Rather than it is determinate; Therefore the present invention is not limited to the embodiment described in the embodiment, and every other embodiments that drawn by those skilled in the art's technical scheme according to the present invention belong to the scope that the present invention protects equally.
Claims (3)
1. a power cable is used the portable passive direct current test apparatus; It is characterized in that: comprise casing, voltage table, megohmmeter, megohmmeter shift knob, high pressure output cable, high pressure output cable switch, reometer, high voltage direct current generator, high voltage direct current generator shift knob, high voltage direct current generator current adjusting knob, ground terminal, transfer switch, rechargeable battery; Said high pressure output cable is installed in the casing top; The high pressure output cable is connected with megohmmeter through voltage table through high pressure output cable switch; The high pressure output cable is connected with high voltage direct current generator through reometer through high pressure output cable switch; Megohmmeter and high voltage direct current generator are connected with transfer switch through megohmmeter shift knob, high voltage direct current generator shift knob respectively; Transfer switch is connected with rechargeable battery is anodal, and the rechargeable battery negative pole is connected with ground terminal; Said high voltage direct current generator current adjusting knob is connected with high voltage direct current generator, regulates the output current of high voltage direct current generator.
2. a kind of power cable according to claim 1 is used the portable passive direct current test apparatus, it is characterized in that: be connected with external power supply socket between said transfer switch and the ground terminal.
3. a kind of power cable according to claim 1 and 2 is used the portable passive direct current test apparatus, it is characterized in that: said rechargeable battery is 10AH, and said external power supply socket connects vehicle-mounted 12V power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210141600.0A CN102662116B (en) | 2012-05-09 | 2012-05-09 | Portable type passive direct-current testing device for power cables |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210141600.0A CN102662116B (en) | 2012-05-09 | 2012-05-09 | Portable type passive direct-current testing device for power cables |
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| Publication Number | Publication Date |
|---|---|
| CN102662116A true CN102662116A (en) | 2012-09-12 |
| CN102662116B CN102662116B (en) | 2014-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210141600.0A Active CN102662116B (en) | 2012-05-09 | 2012-05-09 | Portable type passive direct-current testing device for power cables |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103777057A (en) * | 2012-10-17 | 2014-05-07 | 天津市电力公司 | True-root-mean-square capacitive current tester |
| CN104375033A (en) * | 2014-11-13 | 2015-02-25 | 清华大学 | Device for testing long-term operation performance of direct current cable system under extra-high voltage strong current working condition |
| CN108919124A (en) * | 2018-03-23 | 2018-11-30 | 苏州博思得电气有限公司 | The method and apparatus for determining high pressure generator peak power output |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101701994A (en) * | 2009-11-13 | 2010-05-05 | 航天东方红卫星有限公司 | Conduction insulation test method for low-frequency cable network |
| CN102053204A (en) * | 2011-01-18 | 2011-05-11 | 宝鸡供电局 | Uninterrupted testing method for 1mA voltage of 330kV metal zinc oxide arrester (MOA) |
| CN202002992U (en) * | 2011-02-17 | 2011-10-05 | 济南重工股份有限公司 | Device for distinguishing cable |
| CN202548195U (en) * | 2012-05-09 | 2012-11-21 | 天津市电力公司 | Portable inactive direct-current test device for power cable |
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2012
- 2012-05-09 CN CN201210141600.0A patent/CN102662116B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101701994A (en) * | 2009-11-13 | 2010-05-05 | 航天东方红卫星有限公司 | Conduction insulation test method for low-frequency cable network |
| CN102053204A (en) * | 2011-01-18 | 2011-05-11 | 宝鸡供电局 | Uninterrupted testing method for 1mA voltage of 330kV metal zinc oxide arrester (MOA) |
| CN202002992U (en) * | 2011-02-17 | 2011-10-05 | 济南重工股份有限公司 | Device for distinguishing cable |
| CN202548195U (en) * | 2012-05-09 | 2012-11-21 | 天津市电力公司 | Portable inactive direct-current test device for power cable |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103777057A (en) * | 2012-10-17 | 2014-05-07 | 天津市电力公司 | True-root-mean-square capacitive current tester |
| CN104375033A (en) * | 2014-11-13 | 2015-02-25 | 清华大学 | Device for testing long-term operation performance of direct current cable system under extra-high voltage strong current working condition |
| CN108919124A (en) * | 2018-03-23 | 2018-11-30 | 苏州博思得电气有限公司 | The method and apparatus for determining high pressure generator peak power output |
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| Publication number | Publication date |
|---|---|
| CN102662116B (en) | 2014-11-05 |
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Owner name: STATE GRID CORPORATION OF CHINA Effective date: 20121129 |
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Effective date of registration: 20121129 Address after: 300010 Tianjin city Hebei District Wujing Road No. 39 Applicant after: Tianjin Electric Power Corp. Applicant after: State Grid Corporation of China Address before: 300010 Tianjin city Hebei District Wujing Road No. 39 Applicant before: Tianjin Electric Power Corp. |
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