CN209542707U - High pressure outside line porcelain insulator resistance measurement bar - Google Patents
High pressure outside line porcelain insulator resistance measurement bar Download PDFInfo
- Publication number
- CN209542707U CN209542707U CN201822011557.1U CN201822011557U CN209542707U CN 209542707 U CN209542707 U CN 209542707U CN 201822011557 U CN201822011557 U CN 201822011557U CN 209542707 U CN209542707 U CN 209542707U
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- insulator
- wire
- insulating bar
- megameter
- high pressure
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Abstract
The utility model provides a kind of high pressure outside line porcelain insulator resistance measurement bar, it is made of insulating bar, seal wire and conducting wire, and insulating bar is an overlength body of rod；Seal wire is two horminess metal wires, and wire is fixed on insulating bar top；Two line end of wire top connects an one metal wire respectively, conducting wire lower part is connected with one piece of megameter, and two line end of lower part connects the end E of megameter, the end L respectively, and present apparatus structure is simple, insulator dielectric resistance is measured using it, measurement can be completed in two operators, and a people operates insulating bar on overhead tower, and a people directly reads measurement result on the ground, operator is remote away from band electric position, it is highly-safe, by the display judgement insulation subcase of megameter, as a result fast and accurately.
Description
Technical field
The utility model relates to power equipment goods and materials detection technique fields, and in particular to a kind of high pressure outside line porcelain insulator electricity
Hinder measuring tool.
Background technique
One of important equipment as transmission line of electricity, suspension insulator are responsible for suspension conducting wire and to the important of tower insulation
Task, the suspended porcelain insulator of production use all over the world high pressure, be that various countries are defeated on super-pressure and UHV transmission line
Electric line safe operation provides reliable guarantee.
Insulator is applied very extensively in the power system, and one of the important equipment as transmission line of electricity typically belongs to external insulation,
It works in atmospheric conditions.The external belt conductance of overhead transmission line, power plant and the bus of electric substation and various electrical equipments
Body must be supported with insulator, and be allowed to and the earth (or ground connection object) or other conductor insulations for having potential difference.Suspension insulator
It is responsible for suspension conducting wire and the vital task to tower insulation, it is necessary to have support conducting wire and prevent electric current from returning the two works of ground
With, so that insulator can play good insulation effect.Insulator should not become due to environment and electric load condition
Change caused various electromechanical stress and fail, otherwise insulator would not generate great effect, will damage whole route
Using and service life.
Insulator is being carried in work progress, may leave scar because of collision；It in the process of running, may be due to
Lightning strike accident, and keep it broken or damage；Due to the comprehensive and long-term action of mechanical load and high voltage, and cause to deteriorate, this is all
Its breakdown voltage will be made constantly to decline, when deteriorating to less than along the dry lightning in face pressure, thus referred to as low resistance insulator.Low value insulation
The limit of son is known as zero resistance insulator when that is, internal breakdown voltage is zero.When there are low values or zero resistance insulator for insulator chain
When, in filthy environment, flashover fault just easily even occurs under operating voltage effect in overvoltage.For example, power grid is once multiple
Occur since there are pollution flashover accidents caused by zero resistance insulator；Certain power administration 110kV route, also once because there is zero insulation
Son, and insulator is caused to explode.Therefore, by testing poor insulator present in detection operation in time, hidden danger is excluded, to subtracting
Few power system accident, raising power supply reliability are critically important.
Utility model content
The technical problems to be solved in the utility model is that there are zero resistance insulators for insulator on high-tension line, is excluded not in time
Flashover fault easily occurs, but carries out primary insulation resistance in the prior art and examines the human and material resources of investment, time very big, because
Insulator in using can not be examined in time.
In order to solve the above technical problems, solution provided by the utility model is:
A kind of high pressure outside line porcelain insulator resistance measurement bar, it is made of insulating bar, seal wire and conducting wire, and insulating bar is one to surpass
Long rod；Seal wire is two horminess metal wires, and wire is fixed on insulating bar top；Two line end of wire top connects a gold respectively
Belong to silk, conducting wire lower part is connected with one piece of megameter, and two line end of lower part connects the end E of megameter, the end L respectively.
Present apparatus structure is simple, is measured using it to insulator dielectric resistance, survey can be completed in two operators
Amount, a people operate insulating bar on overhead tower, and a people directly reads measurement result on the ground, and operator is away from band electric position
Far, highly-safe, insulator situation is judged by the display of megameter, as a result fast and accurately.
Preferably, insulating bar be can freely be assembled by multistage, the fiberglass pole dismantled is formed by connecting.
Detailed description of the invention
Fig. 1 is measuring rod structure chart；
Fig. 2 is measuring rod and insulator chain contact condition schematic diagram；
In figure, insulating bar 1, wire 2, conducting wire 3, megameter 4, insulator 5.
Specific embodiment
The purpose of measurement insulator dielectric resistance is the insulation status for checking insulator, and measurement can be on new clothes insulator
It carries out, can also be carried out on insulator in use for some time, find the insulation degradation and insulation breakdown of insulator in time
The defects of, it handles in time.
The standard of insulation resistance qualification on 220KV high-tension line:
(1) the insulator dielectric resistance of new clothes insulator chain should all be greater than or equal to 500M Ω.
(2) the insulator dielectric resistance of insulator chain should all be greater than or equal to 300M Ω in operation.
Insulator deterioration judging principle:
(1) insulator dielectric resistance is respectively less than 300M Ω, and is greater than 240M Ω and can determine that as low resistance insulator.
(2) insulator dielectric resistance is respectively less than 240M Ω and can determine that as zero resistance insulator.
The insulator that certain the utility model is not only capable of measuring on 220KV high-tension line is tested, it is suitable for
All high-tension lines within the scope of 35KV~500KV.
Measuring tool structure provided by the utility model are as follows:
As shown in Figs. 1-2, a kind of high pressure outside line porcelain insulator resistance measurement bar, it is by insulating bar 1, seal wire and 3 groups of conducting wire
At insulating bar 1 is an overlength body of rod；Seal wire is two horminess metal wires 2, and wire 2 is fixed on 1 top of insulating bar；Conducting wire 3 pushes up
Two line end of portion connects an one metal wire 2 respectively, and 3 lower part of conducting wire is connected with one piece of megameter 4, and two line end of lower part connects megameter 4 respectively
The end E, the end L.
This measuring rod, two metals are in contact with 5 two sides metalwork of insulator respectively as the feeler of measuring tool, are formed
Current loop.Insulator both ends insulation status is understood by megaohm meter reading, judges whether insulator is that zero is exhausted according to reading
Edge or low resistance insulator, to find particle matter, in time replacement in time.
Insulating bar 1 is the strut using glass fiber material, and insulating bar can be multisection type, freely assembled between each section or
Length adjustment is realized in disassembly.
Two outlet unit 220KV porcelain vases of our factory are the insulator chain being composed in series by multiple insulators, every Xiang Yousan
String nine is gone here and there totally.Wherein, 1 string 20.2,3 every string 16.A, B, C three-phase amount to 156.
Using the method for the utility model measurement insulator resistance, the specific steps are as follows:
1) by test line elder generation power down process, prepare to measure the insulator dielectric resistance on the route；
2) megameter 4 of 3 ground surface end of conducting wire connection 2500V or more measures；
3) operator A holds insulating bar 1, climbs up overhead tower and reaches near insulator chain；
4) operator B is in terrestrial operation megameter；
5) seal wire is stretched to insulator 1 by operator A, keeps the end of two one metal wires 2 golden with some 5 two sides of insulator respectively
Belong to part contact；
6) operator B open detection switchs, and reads 4 show value of megameter, if insulator is normal, megameter will be shown
The value of tens of thousands of megaohms or a few begohms；If insulator is zero or low resistance insulator, megameter will show zero megaohm or tens
The value in Europe.
It should ensure that the insulation performance of insulating bar is good when measuring, testing crew can wear insulating glove.One operation
Personnel hold insulating bar, contact wire one by one with the insulator of bunchiness, and another testing crew operates megameter correct measurement
Reading.Operator on high tower is remote with a distance from charging member, and it is very small to test electric current itself, so the safe energy of operator
It is enough to ensure.One insulator, which only needs to can be detected for several seconds, to be finished, and speed is very fast.
It is both convenient and effective that this scheme uses, and has captured difficulty for the experiment work of insulator dielectric resistance, from
And considerably reduce inspection cost, it is ensured that high-potting work is gone on smoothly.Shorten round of visits, can guarantee to survey in time
Low resistance insulator out guarantees power system security to handle in time.
Claims (2)
1. a kind of high pressure outside line porcelain insulator resistance measurement bar, it is characterized in that: it is by insulating bar (1), seal wire and conducting wire (3) group
At insulating bar (1) is an overlength body of rod；Seal wire is two horminess metal wires (2), and wire (2) is fixed on insulating bar (1) top
End；Two line ends connect an one metal wire (2) respectively at the top of conducting wire (3), and conducting wire (3) lower part is connected with one piece of megameter (4), lower part two
Line end connects the end E of megameter (4), the end L respectively.
2. high pressure outside line porcelain insulator resistance measurement bar as described in claim 1, it is characterized in that: insulating bar (1) is by multistage energy
Enough fiberglass poles for freely assembling, dismantling are formed by connecting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822011557.1U CN209542707U (en) | 2018-12-03 | 2018-12-03 | High pressure outside line porcelain insulator resistance measurement bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822011557.1U CN209542707U (en) | 2018-12-03 | 2018-12-03 | High pressure outside line porcelain insulator resistance measurement bar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209542707U true CN209542707U (en) | 2019-10-25 |
Family
ID=68262922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822011557.1U Expired - Fee Related CN209542707U (en) | 2018-12-03 | 2018-12-03 | High pressure outside line porcelain insulator resistance measurement bar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209542707U (en) |
-
2018
- 2018-12-03 CN CN201822011557.1U patent/CN209542707U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191025 Termination date: 20211203 |
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| CF01 | Termination of patent right due to non-payment of annual fee |