CN202649309U - Direct current resistance test system of power transmission line - Google Patents
Direct current resistance test system of power transmission line Download PDFInfo
- Publication number
- CN202649309U CN202649309U CN 201220164947 CN201220164947U CN202649309U CN 202649309 U CN202649309 U CN 202649309U CN 201220164947 CN201220164947 CN 201220164947 CN 201220164947 U CN201220164947 U CN 201220164947U CN 202649309 U CN202649309 U CN 202649309U
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- charge
- test system
- resistance test
- transmission line
- direct current
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- Expired - Fee Related
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- 238000012360 testing method Methods 0.000 title claims abstract description 24
- 230000005540 biological transmission Effects 0.000 title claims abstract description 17
- 230000001012 protector Effects 0.000 claims abstract description 32
- 230000005611 electricity Effects 0.000 claims description 13
- 230000003068 static effect Effects 0.000 abstract description 2
- 239000004020 conductor Substances 0.000 description 3
- 238000005421 electrostatic potential Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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Abstract
The utility model discloses a direct current resistance test system of a power transmission line. The direct current resistance test system comprises a direct current resistance tester and a discharge protector, wherein one end of the discharge protector is electrically connected with the power transmission line, and the other end is ground. The direct current resistance test system of the power transmission line can prevent the direct current resistance test from being damaged by static high voltage, and the accuracy of the data test is not affected.
Description
Technical field
The utility model relates to power domain, more specifically, relates to a kind of power line DC resistance test system.
Background technology
Before the high voltage power transmission circuit puts into operation, need to test the circuit power frequency parameter of transmission line of electricity.Direct current resistance is one of them important circuit power frequency parameter, and it can check whether the connection of transmission line of electricity and wire quality meet the requirements.
Measure the direct current resistance of transmission line of electricity in the prior art with instrument for measuring DC resistance.The circuit of joint using is being carried out the direct current resistance test job, owing to wherein operation or owing to reasons such as wind-powered electricity generations of the circuit of joint using, can produce static at measurement circuit.Because electrostatic potential is sometimes higher, usually cause the damage phenomenon of test apparatus such as instrument for measuring DC resistance.
The utility model content
The purpose of this utility model is transmission line of electricity is carried out preventing when direct current resistance is tested that electrostatic high-pressure from damaging instrument for measuring DC resistance.
According to an aspect of the present utility model, a kind of power line DC resistance test system is provided, comprise instrument for measuring DC resistance and charge-discharge protector, an end of described charge-discharge protector is electrically connected with transmission line of electricity, other end ground connection.
Preferably, described transmission line of electricity is three phase line, and described charge-discharge protector is three, and one in each charge-discharge protector and the transmission line of electricity is electrically connected.Preferably, described three charge-discharge protectors are encapsulated in the housing.Perhaps, described transmission line of electricity is three phase line, and described three phase line shares a charge-discharge protector.
Preferably, described charge-discharge protector comprises discharge tube.
Power line DC resistance test system of the present utility model can protect instrument for measuring DC resistance not to be subjected to the damage of electrostatic high-pressure, and does not affect the test data accuracy.
Description of drawings
Fig. 1 is the schematic diagram of an embodiment of power line DC resistance test system of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
As shown in Figure 1, when the direct current resistance of test three phase line 100, need to be with end 102 three-phase shortcircuits of three phase line 100.Two-phase in the top 101 of three phase line 100 is connected to instrument for measuring DC resistance 200.In Fig. 1, the AB in the three phase line 100 is electrically connected with instrument for measuring DC resistance 200 mutually, can obtain like this resistance in series of AB phase conductor.Subsequently, obtain in the same way again the resistance in series of BC phase conductor and CA phase conductor.The last direct current resistance that calculates again each phase according to these three resistance in seriess.Instrument for measuring DC resistance 200 used herein and method of testing thereof are well known in the prior art, do not repeat them here.
In an embodiment of power line DC resistance test system of the present utility model, as shown in Figure 1, also comprise the first charge-discharge protector 301, the second charge-discharge protector 302 and the 3rd charge-discharge protector 303.Terminals of the first charge-discharge protector 301 and the A in the three phase line 100 are electrically connected another terminals ground connection.Terminals of the second charge-discharge protector 302 and the B in the three phase line 100 are electrically connected another terminals ground connection.Terminals of the 3rd charge-discharge protector 303 and the C in the three phase line 100 are electrically connected another terminals ground connection.
The first charge-discharge protector 301, the second charge-discharge protector 302 and the 3rd charge-discharge protector 303 can by discharge tube and optionally other peripheral components consist of.
Like this; when using instrument for measuring DC resistance 200 test direct current resistance; if because a variety of causes has produced high electrostatic potential in three phase line 100; then one or more in the first charge-discharge protector 301, the second charge-discharge protector 302 and the 3rd charge-discharge protector 303 will produce discharging action; discharging this electrostatic potential, thereby protection instrument for measuring DC resistance 200 is not damaged.
In other embodiments, the first charge-discharge protector 301, the second charge-discharge protector 302 and the 3rd charge-discharge protector 303 can be encapsulated in the housing, form an assembly 300.This is so that the equipment connection in the test job is convenient easily.
In other embodiments, the A of three phase line 100, B and C three-phase can share a charge-discharge protector.
Although described exemplary embodiments of the present utility model, should be understood that the utility model is not limited to these embodiment, concerning the professional and technical personnel, various changes and modifications of the present utility model can both realize, but these are all within the spirit and scope of the utility model claim.
Claims (5)
1. a power line DC resistance test system comprises instrument for measuring DC resistance, it is characterized in that, also comprises charge-discharge protector, and an end of described charge-discharge protector is electrically connected with transmission line of electricity, other end ground connection.
2. power line DC resistance test system according to claim 1 is characterized in that, described transmission line of electricity is three phase line, and described charge-discharge protector is three, and one in each charge-discharge protector and the transmission line of electricity is electrically connected.
3. power line DC resistance test system according to claim 2 is characterized in that, described three charge-discharge protectors are encapsulated in the housing.
4. power line DC resistance test system according to claim 1 is characterized in that, described transmission line of electricity is three phase line, and described three phase line shares a charge-discharge protector.
5. each described power line DC resistance test system is characterized in that according to claim 1-4, and described charge-discharge protector comprises discharge tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220164947 CN202649309U (en) | 2012-04-18 | 2012-04-18 | Direct current resistance test system of power transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220164947 CN202649309U (en) | 2012-04-18 | 2012-04-18 | Direct current resistance test system of power transmission line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202649309U true CN202649309U (en) | 2013-01-02 |
Family
ID=47418400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220164947 Expired - Fee Related CN202649309U (en) | 2012-04-18 | 2012-04-18 | Direct current resistance test system of power transmission line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202649309U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107238776A (en) * | 2017-05-27 | 2017-10-10 | 国网河南省电力公司平顶山供电公司 | It is a kind of to prevent detection warning device of the transformer station with safety measure power transmission |
-
2012
- 2012-04-18 CN CN 201220164947 patent/CN202649309U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107238776A (en) * | 2017-05-27 | 2017-10-10 | 国网河南省电力公司平顶山供电公司 | It is a kind of to prevent detection warning device of the transformer station with safety measure power transmission |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE GRID CORPORATION OF CHINA Effective date: 20121206 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20121206 Address after: 037008 No. 61 Yingbin West Road, Shanxi, Datong Patentee after: Datong Power Supply Branch, Shanxi Electric Power Co., Ltd. Patentee after: State Grid Corporation of China Address before: 037008 No. 61 Yingbin West Road, Shanxi, Datong Patentee before: Datong Power Supply Branch, Shanxi Electric Power Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130102 Termination date: 20180418 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |