CN108806897A - There are the suspension insulator and defective insulation isolator detecting method of electrification display function - Google Patents
There are the suspension insulator and defective insulation isolator detecting method of electrification display function Download PDFInfo
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- CN108806897A CN108806897A CN201810344681.1A CN201810344681A CN108806897A CN 108806897 A CN108806897 A CN 108806897A CN 201810344681 A CN201810344681 A CN 201810344681A CN 108806897 A CN108806897 A CN 108806897A
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- Prior art keywords
- insulator
- protrusion
- display function
- suspension insulator
- electrification display
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/02—Suspension insulators; Strain insulators
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1218—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing using optical methods; using charged particle, e.g. electron, beams or X-rays
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/005—Insulators structurally associated with built-in electrical equipment
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Insulators (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The present invention provides a kind of detection method for the suspension insulator and defective insulation insulator having electrification display function, which can easily find out defective insulation insulator not climbing steel tower.The suspension insulator for having electrification display function of the present invention is provided with multiple protrusions (5) in shutter fitting (2) or pin accessory (3), which occurs fine discharge to generate ultraviolet light under the rated voltage of circuit.The ultraviolet light is observed by ultraviolet detector, it can the insulator of ultraviolet light be determined as defective insulation insulator by not observing in insulator chain.
Description
Technical field
The present invention relates to the detection methods of the suspension insulator for having electrification display function and defective insulation insulator.
Background technology
Multiple suspension insulators are connected and connects and constitutes insulator chain to be used for insulation supporter power transmission line.Therefore, even if
In the case where constituting a part for suspension insulator for insulator chain as defective insulation insulator, the sound insulation of others
Son shares voltage, therefore, can't generate obstacle to transmission of electricity immediately.But it if places regardless of due to the switching surge of power transmission line
Deng and the afterflow (alternating current) that invades through poor insulator to make its disconnection, or need high in share ratio rated voltage
The others of voltage perfect in insulator is stained voltage with resistance to, there is a possibility that flashover if likelihood not numerically,
Therefore, it is necessary to regularly carry out overhauling finding with more than ten years primary degree and replace defective insulation insulator.
Therefore, as shown in Patent Document 1, develop a kind of pin accessory in suspension insulator and be equipped with and be applied with voltage
The suspension insulator not shone can be determined as that the deterioration of defective insulation insulator is shown by the electric field induction illuminator of Shi Faguang
Show insulator.
But, it is however generally that, continue supporting power transmission line between 40~50 years relative to suspension insulator, is sent out in electric field induction
The problem of neon tube, the LED most service life used in body of light is shorter than this, and accordingly, there exist shortcoming practicabilities.
In addition, there is also the deteriorations of the construction of mandatory glow discharge under the rated voltage of circuit to show insulator, but
Associated radio noise (RIV) level is possible to the value that is above standard with glow discharge, and wave interference is brought to nearby residents.
Therefore, in fact, just using the firewire poor insulator detection dress recorded in patent document 2 or non-patent literature 1
It sets to carry out the detection of poor insulator.So that the device is travelled on insulator chain with not stopping transmission of electricity, each suspension type can be measured
The insulating resistance value of insulator.
However, it is desirable to which the firewire poor insulator detection device is transported on tens meters of high steel towers.In addition, it is necessary to wrap
Many operators including security monitoring are included, the operation that every 1 steel tower needs 1 day is become.Thus, exist and spreads all over from all directions
The maintenance of power transmission line needs many labours and time this problem.The especially power transmission line of mountainous country, firewire is bad absolutely
Edge detection device, which is transported under steel tower, to be inherently not easy, and upkeep operation is extremely difficult.
Patent document
Patent document 1：Japanese Unexamined Patent Publication 2001-23462 bulletins
Patent document 2：No. 2558022 bulletins of Japanese Patent Publication No.
Non-patent literature
Non-patent literature 1：" firewire poor insulator detection device " NGK レ ビ ュ ー the 35th
Invention content
Therefore, it is an object of the invention to solve above-mentioned existing issue, it is exhausted to provide a kind of suspension type having electrification display function
Edge and this is used to have the defective insulation isolator detecting method of the suspension insulator of electrification display function, this has electrification aobvious
Show the suspension insulator excellent in te pins of durability of function, and defective insulation insulator can be easily found out not climbing steel tower.
The suspension insulator for having electrification display function of the present invention made to solve the above-mentioned problems is characterized as：?
The shutter fitting or pin accessory being installed in suspension insulator main body are provided with multiple protrusions, and the protrusion is under the rated voltage of circuit
Fine discharge occurs to generate ultraviolet light.
Furthermore it is preferred that setting the radius of curvature of protrusion so that the electric field on protrusion top becomes 2kV/mm or more.In addition,
It is preferred that it is horizontal so that the discharge level of fine discharge is less than radio noise generation.It can be by the protrusion and shutter fitting or pin accessory
It is formed integrally, the protrusion can also be formed on band accessory, which is arranged on shutter fitting.
In addition, the detection method of the defective insulation insulator of the present invention is characterized as：There is electrification to show work(by above-mentioned
Can suspension insulator constitute insulator chain, by ultraviolet detector to from being carried out from the ultraviolet light that the protrusion generates,
By not observing in insulator chain, the insulator of ultraviolet light is determined as defective insulation insulator.
Furthermore it is preferred that the ultraviolet detector has the filter for only passing through the wavelength of 240~280nm, it will be described
Ultraviolet detector is arranged on the ground, or is mounted in and is used on helicopter or unmanned vehicle (unmanned plane etc.).
The suspension insulator of electrification display function that has of the present invention is the shutter fitting on being installed on suspension insulator main body
Or pin accessory is provided with the construction of multiple protrusions, it is ultraviolet to generate which occurs fine discharge under the rated voltage of circuit
Line, therefore, the service life with decades in the same manner as suspension insulator main body.Moreover, the ultraviolet light can be by being arranged
On the ground or the ultraviolet detector that is mounted on helicopter or unmanned vehicle (unmanned plane etc.) easily detects, therefore, if
There is the suspension insulator without generating ultraviolet light in insulator chain, then can easily be detected. as defective insulation insulation
Son., will not be to week in addition, though but as long as the discharge level of fine discharge, which generates ultraviolet light, makes radio noise below the mark
While causing wave interference.
Description of the drawings
Fig. 1 is the front view for the suspension insulator for having electrification display function for indicating the 1st embodiment.
Fig. 2 is the chart of the radius of curvature R for the top end part for indicating protrusion and the relationship of electric field strength.
Fig. 3 is the chart for indicating the relationship between voltage and RIV levels.
Fig. 4 is the analysis of electric field indicated when the suspension insulator to 6 previous bunchiness is applied with the line voltage distribution of 66kV
Result figure.
Fig. 5 is the electric field point indicated when the suspension insulator to 6 bunchiness of the present invention is applied with the line voltage distribution of 66kV
The figure of the result of analysis.
Fig. 6 is to indicate to be inserted into 1 defective insulation insulator in the suspension insulator of 6 bunchiness of the present invention, and apply
The figure of the result of analysis of electric field when line voltage distribution.
Fig. 7 is to indicate that ultraviolet light generates the schematic diagram of state.
Fig. 8 is the concept map for the inspecting state for indicating power transmission line.
Fig. 9 is the front view for the suspension insulator for having electrification display function for indicating the 2nd embodiment.
Figure 10 is the sectional view of the modification for the forming position for indicating protrusion.
Figure 11 is the sectional view for the shape for indicating protrusion.
Reference sign
1 suspension insulator main body
2 shutter fittings
3 pin accessories
4 connection recess portions
5 protrusions
6 band accessories
Specific implementation mode
Hereinafter, embodiments of the present invention will be described.Fig. 1 is to indicate that the 1st embodiment of the present invention has electrification
The front view of the suspension insulator of display function, reference numeral 1 are suspension insulator main bodys made of ceramics, and reference numeral 2 is profit
With cement in the fixed shutter fitting in the head of suspension insulator main body 1, reference numeral 3 is using cement in suspension insulator main body
The 1 fixed pin accessory in the back side.It is well known that it is formed with connection recess portion 4 on the top of shutter fitting 2, the suspension type of upside is exhausted
The top of the pin accessory 3 of edge is inserted into the connection recess portion 4 into joining line, thus constitutes insulator chain.
As shown in Figure 1, in the 1st embodiment, multiple protrusions 5 are provided with around shutter fitting 2.By these protrusions 5
It is cast integrally with shutter fitting 2.
Insulator chain is arranged in transmission line of electricity, when applying the rated voltage of circuit, electric field concentrates on the top of protrusion 5
End.The electric field strength is determined that Fig. 2 is the suspension insulator indicated to 6 bunchiness by the radius of curvature R of the top end part of protrusion 5
The figure of relationship between the radius of curvature R and electric field strength of the top end part of protrusion 5 when device is applied with the line voltage distribution of 66kV
Table.
In the present invention, the radius of curvature R of the top end part of protrusion 5 is adjusted so that electric field strength becomes 2kV/mm
More than, to generate fine discharge.As shown in Fig. 2, the radius of curvature R of the top end part of protrusion 5 at this time is 5~11mm.But
The value also according to rated voltage, connection number and change.
Due to the fine discharge, aerial nitrogen generates ultraviolet light.It is attached that the wavelength of the nitrogen discharge is in 240~500nm
Closely, it but as long as using following ultraviolet detector, would not be influenced, can be detected by sunlight, the ultraviolet light
Detector has the filter for only passing through the wavelength of the ultraviolet range of sunlight 240~280nm below.
In addition, when the electric field strength of the top end part of protrusion 5 becomes larger, RIV horizontal (radio noise is horizontal) is above standard
Value, it is possible to bring wave interference to nearby residents.Fig. 3 is that the longitudinal axis is set as RIV levels (dB), and horizontal axis is set as voltage (kV)
Chart.By the way that protrusion 5 is arranged under rated voltage, ultraviolet light can be detected.RIV levels at this time become 11dB hereinafter, nothing
Line electrical noise is the 34dB or less as standard value.In addition, it is RIV levels in 50dB or more to generate visual corona, electric wave is generated
Interference is RIV levels in 90dB or more.Even in this way, do not generate visual corona, wave interference fine discharge, also can be into
Row UV detection.
Hereinafter, indicating the analysis of electric field example of the suspension insulator for previous type suspension insulator and embodiment.
Fig. 4 is the case where being applied with the voltage-to-ground of 66kV to the suspension insulator of 6 previous bunchiness of not protrusion,
The electric field strength on the surface of suspension insulator is lower than carrying out the 2kV/mm of atmospherical discharges, can not detect ultraviolet light.
Fig. 5 is the suspension insulator sub-device of 7 bunchiness of the suspension insulator to having used the embodiment with protrusion
The case where being applied with the voltage-to-ground of 66kV.Suspension insulator is the insulator of 6 bunchiness of product identification CA-500MY, figure from
Electrification side starts to illustrate the 1st insulator, the 2nd insulator.In addition, as shown in (a) of Figure 11, about the shape of protrusion,
It is that the top of cylinder is made to be hemispherical shape, therefore, the radius of curvature R on top is 10mm.The electric field strength of protrusion becomes
2.1kV/mm, 3.0kV/mm, it is thus identified that generate fine discharge, and generate ultraviolet light.But, in this case, RIV levels also exist
28dB is hereinafter, below standard value 34dB.
Fig. 6 is the suspension insulator sub-device in 7 bunchiness of the suspension insulator for having used the embodiment with protrusion
1 defective insulation insulator of middle insertion, and the case where be applied with the voltage-to-ground of 66kV.In the same manner as Fig. 5, suspension insulator is
The insulator of 6 bunchiness of product identification CA-500MY, about the shape of protrusion, identical as Fig. 5 is that the top of cylinder is made to be song
Rate radius R is the hemispherical shape of 10mm.3 insulators shown in fig. 6 are equivalent to the insulator of 7 bunchiness shown in Fig. 7
Electrification side 3 insulators, make the center in 3 insulators insulator be defective insulation insulator.Perfect insulator
Protrusion electric field strength highest, become 2.5kV/mm, produce fine discharge.But the protrusion of defective insulation insulator
The electric field strength in portion is 0.9kV/mm, lower than the level of atmospherical discharges.In addition, in this case, RIV levels also 28dB with
Under, below standard value.
If according to the result of above-mentioned analysis of electric field it is found that through the invention have electrification display function suspension insulator
It constitutes insulator chain and applies the rated voltage of circuit, then generate fine discharge on the top of protrusion 5.But it is exhausted when being mixed into
The voltage of sharing of the edge poor insulation period of the day from 11 p.m. to 1 a.m, the defective insulation insulator is lower, and therefore, the electric field strength on the top of protrusion 5 also becomes
It is small, do not generate fine discharge.Therefore, as shown in fig. 7, for perfecting insulator, ultraviolet light is detected, but exhausted for defective insulation
Edge does not detect ultraviolet light, can detect defective insulation insulator.Moreover, the fine discharge is there is no concern that generating visual
The level of corona, wave interference.
It is preferred that ultraviolet detector has the filter for only passing through the wavelength of 240~280nm, it can be arranged and come on the ground
It uses.In addition, being used on helicopter or unmanned vehicle (unmanned plane etc.) 10 as shown in figure 8, can also be mounted in.Especially
For the power transmission line of mountainous country, if be detected while being operated to unmanned plane 10 by helicopter 11, make
Industry becomes easy.
In the 1st embodiment described above, keep protrusion 5 and shutter fitting 2 formed integrally.But, shown in Fig. 9
In 2nd embodiment, the band accessory 6 for having protrusion 5 is made, can be attached on shutter fitting 2 later.As long as the band accessory 6 with
Shutter fitting 2 is carried out similarly galvanizing, it can be ensured that the durability of decades.It is preferred that make band accessory 6 be with shutter fitting 2 without between
The chimeric circular shape in unoccupied place, is fixedly mounted in more preferably through secure component appropriate on shutter fitting 2.If being set as this
Construction can then make the suspension insulator being arranged become the suspension insulator for having electrification display function.
In any embodiment, the position of above-mentioned protrusion 5 is all located at the flanking central portion of shutter fitting 2, but not
It is limited to the position.For example, as being used as shown in A, the head of shutter fitting 2 can be set as in Fig. 10, it can also be such as B
It is shown to be set as the top of shutter fitting 2 like that, it can also be as the lower part for being set as shutter fitting 2 shown in C.
In addition, in Fig. 10 as being used as shown in D, protrusion 5 can be also arranged in pin accessory 3.But, only match in pin
Part 3 forms protrusion 5, and the detection of electric discharge is also not easy to, therefore, is applied in combination more preferably with the protrusion 5 of shutter fitting 2.
The shape of top end part about protrusion 5, other than baculum shown in (a) of Figure 11, additionally it is possible to be set as (b)
Shown in nadel.But, in the case that any one, the electric field strength of the top end part of protrusion 5 is needed in 2kV/mm or more
Be set as not generating visual corona, wave interference range.In addition, in (a) of Figure 11, R is radius of curvature, and h is protrusion
Highly.In addition, in (b) of Figure 11, θ is coning angle, and h is the height of protrusion.
As described above, according to the present invention, even if it is exhausted to easily find out defective insulation if not climbing steel tower
Edge.
Claims (7)
1. a kind of suspension insulator having electrification display function, which is characterized in that
Shutter fitting or pin accessory on being installed on suspension insulator main body are provided with multiple protrusions, and the protrusion is in the specified of circuit
Fine discharge occurs under voltage to generate ultraviolet light.
2. the suspension insulator according to claim 1 for having electrification display function, which is characterized in that
Set the radius of curvature of protrusion so that the electric field on protrusion top becomes 2kV/mm or more.
3. the suspension insulator according to claim 1 or 2 for having electrification display function, which is characterized in that
Keep the radio noise generation that the discharge level of fine discharge is less than electric power standard horizontal.
4. the suspension insulator according to claim 1 for having electrification display function, which is characterized in that
The protrusion and shutter fitting or pin accessory is formed integrally.
5. the suspension insulator according to claim 1 for having electrification display function, which is characterized in that
The protrusion is formed on band accessory, which is arranged on shutter fitting.
6. a kind of defective insulation isolator detecting method, which is characterized in that
Insulator chain is constituted by the suspension insulator for having electrification display function described in any one in Claims 1 to 5,
By ultraviolet detector to from being carried out from the ultraviolet light that the protrusion generates, will not observe ultraviolet light in insulator chain
Insulator be determined as defective insulation insulator.
7. defective insulation isolator detecting method according to claim 6, which is characterized in that
The ultraviolet detector has the filter for only passing through the wavelength of 240nm~280nm, by the ultraviolet detector
Setting on the ground, or is mounted in and is used on helicopter or unmanned vehicle i.e. unmanned plane.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017-085230 | 2017-04-24 | ||
| JP2017085230 | 2017-04-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108806897A true CN108806897A (en) | 2018-11-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810344681.1A Pending CN108806897A (en) | 2017-04-24 | 2018-04-17 | There are the suspension insulator and defective insulation isolator detecting method of electrification display function |
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|---|---|
| JP (1) | JP2018186073A (en) |
| CN (1) | CN108806897A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114200239B (en) * | 2021-12-10 | 2023-03-21 | 清华大学 | Method for online monitoring failure of insulator monomer in insulator string in power system |
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2018
- 2018-02-09 JP JP2018021547A patent/JP2018186073A/en active Pending
- 2018-04-17 CN CN201810344681.1A patent/CN108806897A/en active Pending
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| Publication number | Publication date |
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| JP2018186073A (en) | 2018-11-22 |
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Application publication date: 20181113 |