CN205941734U - A device for handing over DC cable adds thermal ageing test - Google Patents
A device for handing over DC cable adds thermal ageing test Download PDFInfo
- Publication number
- CN205941734U CN205941734U CN201620838543.5U CN201620838543U CN205941734U CN 205941734 U CN205941734 U CN 205941734U CN 201620838543 U CN201620838543 U CN 201620838543U CN 205941734 U CN205941734 U CN 205941734U
- Authority
- CN
- China
- Prior art keywords
- cable
- rectifier bridge
- direct current
- ageing test
- thermal ageing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000012360 testing method Methods 0.000 title claims abstract description 16
- 230000032683 aging Effects 0.000 title claims abstract description 15
- 238000002955 isolation Methods 0.000 claims abstract 4
- 239000003990 capacitor Substances 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 230000009466 transformation Effects 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 abstract description 8
- 238000009413 insulation Methods 0.000 abstract 1
- 230000015556 catabolic process Effects 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005352 galvanomagnetic phenomena Effects 0.000 description 1
Abstract
The utility model relates to a device for handing over DC cable adds thermal ageing test, its major technical features is: including isolation transformer, rectifier bridge, filter capacitance, dc -to -ac converter and control the switch entirely, isolation transformer's former limit is connected with 380V alternating current power supply, and two inputs that the rectifier bridge is connected to the high voltage insulation wire are passed through on this isolation transformer's vice limit, the parallelly connected filter capacitance of output of this rectifier bridge with DC cable the wiring hold, the quilt is tried the DC cable both ends and connects to work a telephone switchboard at DC cable and serve, the dc -to -ac converter is connected on the output of rectifier bridge through controlling the switch entirely, and the output of dc -to -ac converter is connected and is exchanged the cable connection end, try to exchange the cable both ends and connects and serve at interchange cable connection. The utility model discloses can add thermal ageing test to exchanging cable and DC cable simultaneously for cable heating test is more accurate reliable, has characteristics such as precision height, simple structure, convenient operation, can extensively be used for exchanging cable and DC cable and add the thermal ageing test field.
Description
Technical field
The utility model belongs to cable degradation technical field, and especially a kind of alternating current-direct current cable heat ageing that is used for tries
The device tested.
Background technology
It would be desirable to be able to produce the high current device of kilo-ampere in existing high voltage ac/dc electric cable heating degradation.For
Ac cable, typically adopts cross under type cable heating transformer.Tested cable needs the hole through transformer core, tested cable
Secondary coil as transformer.After cross under type cable heating transformer is passed through electric current, due to galvanomagnetic-effect so that tested cable
Itself produces heat, reaches the purpose of electric cable heating degradation.The shortcoming of this method be cannot be carried out accurately controlling by
The electric current of examination cable.For direct current cables, market has various heat run devices, but general principle is all to utilize
Transformer is changing electric current.At present, there is scholar to propose to utilize rectification principle, direct current cables has been born as the direct current of rectifier bridge
Carry, precise control commutating voltage is to realize the control to tested cable current, thus it is aging to reach the tested electric cable heating of control
Target.In sum, the experimental rig for ac cable and direct current cables heat ageing is not quite similar, in testing at the scene,
Generally require to prepare multiple devices, bring inconvenience to practical operation.
Content of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, provide a kind of compact conformation, control accuracy high and
Device for alternating current-direct current cable heat ageing test easy to use.
The utility model solves its technical problem and takes technical scheme below to realize：
A kind of device for alternating current-direct current cable heat ageing test, including isolating transformer, rectifier bridge, filter capacitor,
Inverter and full control switch, the former limit of described isolating transformer is connected with 380V AC power, the secondary of this isolating transformer
Connect two inputs, the output end parallel filtering electric capacity of this rectifier bridge and the direct current cables of rectifier bridge by high-voltage insulating wire
Terminals, tested direct current cables two end is connected on direct current cables terminals；Described inverter is connected to rectification by full control switch
In the output end of bridge, the output end of inverter connects ac cable terminals, and tested ac cable two end is connected on ac cable and connects
On line end.
Described rectifier bridge and inverter are connected and composed by IGBT or IGCT.
Advantage of the present utility model and good effect are：
The utility model is using typical AC-DC-AC circuit and using ripe Power Electronic Technique to tested cable current
Carry out precise control, direct current cables is connected to the filter capacity two ends of rectifier DC side, ac cable is connected to inverse
Become the output two ends of device, heat ageing test can be carried out to ac cable and direct current cables so that electric cable heating is tested simultaneously
More accurately and reliably, there is high precision, the features such as structure is simple and convenient to operate, can be widely used for ac cable and direct current cables
Heat ageing test field.
Brief description
Fig. 1 is circuit theory diagrams of the present utility model；
Wherein, 1-380V AC power；2- isolating transformer；3- high-voltage insulating wire；4- rectifier bridge；5- filters
Electric capacity；The tested direct current cables of 6-；7- inverter；The tested ac cable of 8-；9 full control switches.
Specific embodiment
Below in conjunction with accompanying drawing, the utility model embodiment is further described：
A kind of device for alternating current-direct current cable heat ageing test, as shown in figure 1, inclusion isolating transformer 2, high pressure are exhausted
Edge wire 3, rectifier bridge 4, filter capacitor 5, inverter 7 and full control switch 9.The former limit of described isolating transformer and 380V alternating current
Source 1 is connected, and the secondary of this isolating transformer connects two input (binding post a of rectifier bridge by high-voltage insulating wire
With binding post b), the output end parallel filtering electric capacity of this rectifier bridge and direct current cables terminals (binding post c and binding post
D), tested direct current cables two end is connected on binding post c and binding post d；Described inverter is connected to whole by full control switch
In the output end of stream bridge, the output end of inverter connects ac cable terminals (binding post e and binding post f), tested friendship
Stream cable two end is connected on binding post e and binding post f.Described rectifier bridge and inverter are connected and composed by IGBT or IGCT.
Foregoing circuit can be encapsulated in a rack, and draw binding post a and binding post b, binding post c and connect
Line terminals d and binding post e and binding post f.
The utility model using method is：
(1) 380V AC power is connected to isolating transformer former limit；
(2) with high-voltage insulating wire, isolating transformer secondary is connected on binding post a and binding post b；
(3) if necessary to carry out direct current cables heat run, then just tested direct current cables two end is connected on binding post c
On binding post d；
(4) if necessary to carry out ac cable heat run, then just tested ac cable two end is connected on binding post e
On binding post f.
(5) according to test demand, corresponding parameter is set it is possible to be controlled to the electric current in tested cable.
When using, should be noted：(1) if only carrying out DC heating test, then the power electronics device in inverter
Part is all off, and full control switch needs are controlled to shutoff simultaneously, and e point and f point can be got up with short circuit；(2) if only carrying out exchange
Heat run, then full control switch will be controlled to normal open, c point and d point disconnect.
It is emphasized that embodiment described in the utility model is illustrative rather than determinate, therefore this reality
It is not limited to the embodiment described in specific embodiment with new inclusion, every new according to this practicality by those skilled in the art
The other embodiment that the technical scheme of type draws, also belongs to the scope of the utility model protection.
Claims (2)
1. a kind of device for alternating current-direct current cable heat ageing test it is characterised in that：Including isolating transformer, rectifier bridge,
Filter capacitor, inverter and full control switch, the former limit of described isolating transformer is connected with 380V AC power, this isolation transformation
The secondary of device by high-voltage insulating wire connect rectifier bridge two inputs, the output end parallel filtering electric capacity of this rectifier bridge and
Direct current cables terminals, tested direct current cables two end is connected on direct current cables terminals；Described inverter passes through full control switch even
It is connected in the output end of rectifier bridge, the output end of inverter connects ac cable terminals, and tested ac cable two end is connected on friendship
On stream cable termination.
2. a kind of device for alternating current-direct current cable heat ageing test according to claim 1 it is characterised in that：Described
Rectifier bridge and inverter are connected and composed by IGBT or IGCT.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620838543.5U CN205941734U (en) | 2016-08-03 | 2016-08-03 | A device for handing over DC cable adds thermal ageing test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620838543.5U CN205941734U (en) | 2016-08-03 | 2016-08-03 | A device for handing over DC cable adds thermal ageing test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205941734U true CN205941734U (en) | 2017-02-08 |
Family
ID=57924409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620838543.5U Active CN205941734U (en) | 2016-08-03 | 2016-08-03 | A device for handing over DC cable adds thermal ageing test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205941734U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109633334A (en) * | 2018-12-29 | 2019-04-16 | 广东电网有限责任公司 | A kind of electric heating combines thermal cycling ageing method, apparatus, equipment and storage medium |
-
2016
- 2016-08-03 CN CN201620838543.5U patent/CN205941734U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109633334A (en) * | 2018-12-29 | 2019-04-16 | 广东电网有限责任公司 | A kind of electric heating combines thermal cycling ageing method, apparatus, equipment and storage medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |