CN208421144U - A kind of novel zero insulation detection device - Google Patents
A kind of novel zero insulation detection device Download PDFInfo
- Publication number
- CN208421144U CN208421144U CN201821073663.6U CN201821073663U CN208421144U CN 208421144 U CN208421144 U CN 208421144U CN 201821073663 U CN201821073663 U CN 201821073663U CN 208421144 U CN208421144 U CN 208421144U
- Authority
- CN
- China
- Prior art keywords
- module
- audio
- spark
- novel
- detection device
- 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.)
- Active
Links
Landscapes
- Testing Relating To Insulation (AREA)
Abstract
The utility model relates to a kind of novel zero insulation detection devices, belong to power transmission technology field.The novel zero insulation detection device includes: novel spark detection device and reception device, and the novel spark detection device includes: spark tester and acquisition device, and the acquisition device is coupled with the reception device.The acquisition device is converted into audio signal transmission to the reception device for acquiring the spark tester generated spark discharge sound during carrying out zero value detection to insulator.The reception device after amplifying to the audio signal for playing back.Effectively improve using spark gap detection method there is a problem of accuracy rate it is low, be easy erroneous judgement, operating risk it is high.
Description
Technical field
The utility model belongs to power transmission technology field, and in particular to a kind of novel zero insulation detection device.
Background technique
Suspension insulator undertakes in transmission line of electricity, substation fixes, connects and keeps electrical body and grounding body insulation
Critical function, since long-time is run in strong electrical field, insulator can continuous aging, decline breakdown voltage constantly, finally become
At " low value " or " zero ", when low value or zero occurs in insulator chain, the voltage's distribiuting situation of bunch of insulator will be changed, caused
Making more the Ageing of Insulators, the resistance to thunder for having low value or the insulator chain of zero to reduce route is horizontal, probability of flashover is increased,
Easily cause accident.
It is therefore desirable to O&M department every two years to porcelain insulator carry out electrification zero value detection it is primary.Currently, band at the scene
Electricity uses spark gap method to the detection of the Ageing of Insulators substantially, and spark gap detector is small and exquisite, light, quick, flexible, simple
It is single, high-efficient, cheap, thus obtained large-scale popularization application.But that there are accuracys rate is low for spark gap detection method, be easy erroneous judgement,
The high problem of operating risk.
Utility model content
In consideration of it, the purpose of this utility model is to provide a kind of novel zero insulation detection devices, to effectively improve
The above problem.
The embodiments of the present invention are achieved in that
The utility model embodiment provides a kind of novel zero insulation detection device, comprising: novel spark detection device
And reception device, the novel spark detection device include: spark tester and acquisition device, the acquisition device with it is described
Reception device coupling；The acquisition device is for acquiring the spark tester to insulator progress zero value detection during institute
The spark discharge sound of generation, and audio signal transmission is converted into the reception device；The reception device is used for the sound
Frequency signal plays back after amplifying.
In the utility model optional embodiment, the acquisition device includes: wireless sending module, audio collection module
With the first power module, the audio collection module is connect with the wireless sending module, and first power module is respectively
The wireless sending module and audio collection module power supply；The audio collection module, for acquiring the Spark plug optical fiber sensor
Device generated spark discharge sound during carrying out zero value detection to insulator, and audio signal transmission is converted into the nothing
Line sending module；The wireless sending module, for giving the audio signal transmission to the reception device.
In the utility model optional embodiment, the acquisition device further includes metallic shield, the wireless transmission
Module, the audio collection module and first power module are placed in the metallic shield.
Institute in the utility model optional embodiment, in the spark-discharge gap side in face of the spark tester
It states and offers through-hole on metallic shield.
In the utility model optional embodiment, the wireless sending module uses 2.4G number sending module.
In the utility model optional embodiment, the audio collection module is resistance-type audio collection module, capacitor
Formula audio collection module or casting type audio collection module.
In the utility model optional embodiment, the spark tester includes: the first probe, the second probe, first
Fixed electrode, the first sliding electrode, the second fixed electrode and the second sliding electrode, first probe and described first are fixed
Electrode electrical connection, the described first fixed electrode are slidably connected with first sliding electrode, second probe and described second
Fixed electrode electrical connection, the described second fixed electrode are slidably connected with second sliding electrode, first sliding electrode with
Gap between second sliding electrode can by adjust position of first sliding electrode on the described first fixed electrode and/
Or position of second sliding electrode on the described second fixed electrode is adjusted to adjust.
In the utility model optional embodiment, the reception device includes: wireless receiving module, audio amplification mould
Block, second power supply module and loudspeaker；The wireless receiving module is connect with the audio amplification block, and the audio amplifies mould
Block is connect with the loudspeaker, and the wireless receiving module is coupled with the acquisition device, and the second power supply module is respectively
The wireless receiving module, the audio amplification block and the power speakers；The wireless receiving module is used for will be described
Audio signal transmission gives the audio amplification block；The audio amplification block after amplifying to the audio signal for passing through
The loudspeaker plays back.
In the utility model optional embodiment, the wireless receiving module uses 2.4G digital received module.
In the utility model optional embodiment, the audio amplification block is APORO audio amplification block.
The novel zero insulation detection device of the utility model embodiment goes acquisition spark tester to exist by acquisition device
Zero value detection generated spark discharge sound in the process is carried out to insulator, and is translated into audio signal transmission and gives reception dress
It sets, is played back after being amplified so as to the reception device to the audio signal.It effectively improves and is examined using spark gap
Survey method has that accuracy rate is low, is easy erroneous judgement, operating risk is high.Wherein, spark gap detection method is by faint fire
Gap discharge sound is spent to determine whether suspension insulator is zero, but due to the sub- low value of SI semi-insulation or voltage distribution of insulator
More low factor causes spark discharge sound smaller；Secondly by environment sheets such as operation field sound of the wind, current sound, transformer station high-voltage side bus sound
Back noise factor influence, therefore cause spark gap detection method there is a problem of accuracy rate it is low, be easy erroneous judgement, operating risk it is high.
Other feature and advantage of the utility model will illustrate in subsequent specification, also, partly from specification
It becomes apparent, or is understood and implementing the utility model embodiment.The purpose of this utility model and other advantages can
It is achieved and obtained by specifically noted structure in written specification, claims and attached drawing.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only the utility model
Some embodiments for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other attached drawings.By the way that shown in attached drawing, the above and other purpose, feature and advantage of the utility model will more
Clearly.Identical appended drawing reference indicates identical part in all the attached drawings.Do not drawn by actual size equal proportion scaling deliberately
Attached drawing processed, it is preferred that emphasis is show the purport of the utility model.
Fig. 1 shows a kind of structural schematic diagram of novel zero insulation detection device provided by the embodiment of the utility model.
Fig. 2 shows a kind of structural schematic diagrams of novel spark detection device provided by the embodiment of the utility model.
Fig. 3 shows a kind of structural block diagram of acquisition device provided by the embodiment of the utility model.
Fig. 4 shows a kind of structural block diagram of reception device provided by the embodiment of the utility model.
Icon: the novel zero insulation detection device of 300-；100- novel spark detection device；110- insulation board；
111- connecting hole；120- spark tester；The first probe of 121-；The second probe of 122-；123- first fixes electrode；
The first sliding electrode of 124-；125- second fixes electrode；The second sliding electrode of 126-；130- acquisition device；131- is wireless
Sending module；132- audio collection module；The first power module of 133-；200- reception device；210- wireless receiving module；
220- audio amplification block；230- second power supply module；240- loudspeaker.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Usually here in attached drawing description and
The component of the utility model embodiment shown can be arranged and be designed with a variety of different configurations.
Therefore, requirement is not intended to limit to the detailed description of the embodiments of the present invention provided in the accompanying drawings below
The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Based in the utility model
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the range of the utility model protection.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", " water
It is flat ", "inner", the instructions such as "outside" orientation or positional relationship be to be based on the orientation or positional relationship shown in the drawings or the reality
With novel product using when the orientation or positional relationship usually put, be merely for convenience of description the utility model and simplification retouched
It states, rather than the device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation,
Therefore it should not be understood as limiting the present invention.It is retouched in addition, term " first ", " second ", " third " etc. are only used for distinguishing
It states, is not understood to indicate or imply relative importance.
In addition, term "horizontal" term is not offered as requiring component abswolute level or pendency, but can be slightly tilted.Such as
"horizontal" only refers to that its direction is more horizontal with respect to for "vertical", be not indicate the structure have to fully horizontally, and
It is that can be slightly tilted.
In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, term " is set
Set ", " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection,
Or it is integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, intermediary can also be passed through
It is indirectly connected, can be the connection inside two elements.For the ordinary skill in the art, it can be managed with concrete condition
Solve the concrete meaning of above-mentioned term in the present invention.
Currently, the detection charged at the scene to the Ageing of Insulators uses spark gap method substantially.Wherein, spark gap detects
Method is to determine whether suspension insulator is zero by faint spark gap sound, but due to the sub- low value of SI semi-insulation
Or the more low factor of voltage distribution of insulator, cause spark discharge sound smaller；Secondly by operation field sound of the wind, current sound, transformation
The environmental exact details noise factors such as device operation sound influence, thus lead to spark gap detection method there are accuracys rate it is low, be easy erroneous judgement, make
The high problem of industry risk.
For defect present in above scheme, be inventor being obtained after practicing and carefully studying as a result,
Therefore, the discovery procedure of the above problem and the solution party that hereinafter the utility model embodiment is proposed regarding to the issue above
Case all should be the contribution that inventor makes the utility model during the utility model.
In consideration of it, the utility model embodiment provides a kind of novel zero insulation detection device 300, as shown in Figure 1.It should
Novel zero insulation detection device 300 includes: novel spark detection device 100 and reception device 200.
As shown in Fig. 2, the novel spark detection device 100 includes: insulation board 110 and is set to the insulation board 110
On spark tester 120 and acquisition device 130.
As an alternative embodiment, the spark tester 120 is set to the leading portion area of the insulation board 110
Domain, the acquisition device 130 are set to the middle section region of the insulation board 110, and the back segment region of the insulation board 110 is provided with
For connecting the connecting hole 111 of insulating bar.Optionally, the insulation board 110 is made of epoxy resin.
Wherein, the spark tester 120 includes: the first probe 121, the fixed electrode 123 of the second probe 122, first, the
The fixed electrode 125 of one sliding electrode 124, second and the second sliding electrode 126.First probe 121 is consolidated with described first
Fixed electrode 123 is electrically connected, and the described first fixed electrode 123 is slidably connected with first sliding electrode 124, second probe
122 are electrically connected with the described second fixed electrode 125, and the described second fixed electrode 125 connects with second sliding electrode 126 sliding
It connects, the gap between first sliding electrode 124 and second sliding electrode 126 can be by adjusting the first sliding electrode
124 position and/or the second sliding electrode 126 of adjusting on the described first fixed electrode 123 is in the described second fixed electrode 125
On position adjust.
Optionally, offer screw hole on the described first fixed electrode 123, first sliding electrode 124 include: screw rod and
The metal ball connecting with the screw rod, the screw rod are placed in the screw hole, and the metal ball is electric towards second sliding
The sphere of pole 126.By the first sliding electrode 124 clockwise or counterclockwise, i.e., adjustable first sliding electrode 124 and the
Gap between two sliding electrodes 126 is fixed after gap determines by nut.
Optionally, offer screw hole on the described second fixed electrode 125, second sliding electrode 126 include: screw rod and
The metal ball connecting with the screw rod, the screw rod are placed in the screw hole, and the metal ball is electric towards first sliding
The sphere of pole 124.By the second sliding electrode 126 clockwise or counterclockwise, i.e., adjustable first sliding electrode 124 and the
Gap between two sliding electrodes 126 is fixed after gap determines by nut.
Wherein, the sphere of the sphere of the first sliding electrode 124 and the second sliding electrode 126 is oppositely arranged, between the two shape
At discharging gap.
Wherein, the first fixed electrode 123 is oppositely arranged with the second fixed electrode 125, both line and insulation board 110
Front end it is parallel.After first probe 121 is electrically connected with the first fixed electrode 123, it is fixed on a corner of the front end of insulation board 110
Locate in (such as left side), after the second probe 122 is electrically connected with the second fixed electrode 125, is fixed on the another side of the front end of insulation board 110
(such as right side) at angle.
Wherein, the acquisition device 130 is set to the terminal section of insulation board 110, is right against the fire of spark tester 120
Flower discharging gap side, produced by acquiring the spark tester 120 during carrying out zero value detection to insulator
Spark discharge sound.
The acquisition device 130 is for acquiring the spark tester 120 during carrying out zero value detection to insulator
Generated spark discharge sound, and audio signal transmission is converted into the reception device 200.As shown in Figure 3.The acquisition
Device 130 includes: wireless sending module 131, audio collection module 132 and the first power module 133.The audio collection module
132 connect with the wireless sending module 131, and first power module 133 is respectively the wireless sending module 131 and institute
State the power supply of audio collection module 132.
The audio collection module 132 is carrying out zero value detection mistake to insulator for acquiring the spark tester 120
Generated spark discharge sound in journey, and audio signal transmission is converted into the wireless sending module 131, wherein the sound
Frequency acquisition module 132 is resistance-type audio collection module, condenser type audio collection module or casting type audio collection module.Example
Such as, in the present embodiment, using immense HH_05.04 resistance-type audio collection module.
The wireless sending module 131, for giving the audio signal transmission to the reception device 200.As one kind
Optional embodiment, the wireless sending module 131 use 2.4G number sending module, for example, Norway's 2.4G number sends mould
Block, hat mark 2.4G number sending module and morning twilight 2.4G numerical value sending module.In addition, the wireless sending module 131 can be with
Using modules such as bluetooth module, WiFi module, ZigBee module, 3G module, 4G module or FM high-frequency models.
First power module 133 is respectively that the wireless sending module 131 and the audio collection module 132 supply
Electricity.For example, using with promise sage Supreme Being's 85mA ni-mh power supply, with promise sage Supreme Being's 85mA lithium power supply, Emma's 85mA lithium power supply etc..
In order to avoid wireless sending module 131, audio collection module 132 and the first power module 133 are from electric jamming,
To improve detection accuracy, optionally, the acquisition device 130 further includes metallic shield.The wireless sending module 131,
The audio collection module 132 and first power module 133 are placed in the metallic shield.
Wherein, optionally, in the metallic shield of the spark-discharge gap side in face of the spark tester 120
On offer through-hole, in order to acquire the spark tester 120 to insulator carry out zero value detection during caused by
Spark discharge sound.The metallic shield is aluminium shielding case or copper shield cover.Further, it is also possible to using other metal, such as iron, silver
Equal metals.
Wherein, the reception device 200 is coupled with the acquisition device 130, and the reception device 200 is used for the sound
Frequency signal plays back after amplifying.As shown in Figure 4.The reception device 200 includes: wireless receiving module 210, audio
Amplification module 220, second power supply module 230 and loudspeaker 240.The wireless receiving module 210 and the audio amplification block
220 connections, the audio amplification block 220 are connect with the loudspeaker 240, the wireless receiving module 210 and the acquisition
Device 130 couples, and the second power supply module 230 is respectively the wireless receiving module 210, the audio amplification block 220
It powers with the loudspeaker 240.
The wireless receiving module 210 is used for the audio signal transmission to the audio amplification block 220.As one
The optional embodiment of kind, which uses 2.4G digital received module, for example, Norway's 2.4G digital received
Module, hat mark 2.4G digital received module and morning twilight 2.4G numerical value receiving module.In addition, the wireless receiving module 210 may be used also
Using modules such as bluetooth module, WiFi module, ZigBee module, 3G module, 4G module or FM high-frequency models.
The audio amplification block 220 after amplifying to the audio signal through the loudspeaker 240 for playing out
Come.Optionally, the audio amplification block 220 is APORO audio amplification block.Further, it is also possible to using TPAd-1102 sound
Frequency amplification module, APPS650a audio amplification block.
The second power supply module 230 is respectively the wireless receiving module 210, the audio amplification block 220 and institute
State the power supply of loudspeaker 240.For example, using with promise sage Supreme Being's 85mA ni-mh power supply, with promise sage Supreme Being's 85mA lithium power supply, Emma 85mA lithium electricity
Source etc..
Wherein, it should be noted that the application research people is to 110-220kV power transformation station equipment corona discharge, transformation
Device operation sound, ambient noise Comprehensive background noise measure repeatedly, background noise reaches 60-90dB.Further, it utilizes
Repeated measurement of the sound field detector to power transformation station equipment corona discharge sound, transformer station high-voltage side bus sound, when being located at ground in substation
Corona discharge sound (hereinafter referred to as background noise) about 60-75dB is located at framework positions background noise about 70-80dB, is located at
The background noise of transformer side about 75-85dB, and spark discharge sound when detecting position among suspension insulator only reaches 60-
70 decibels or so, therefore, testing staff is difficult to determine whether zero resistance insulator from complicated mixing background noise.Therefore,
It is judged by accident in order to ensure being reduced when suspension insulator is detected using spark gap method, in the embodiment of the present application, passes through acquisition device
130 acquire generated spark discharge sound during carrying out zero value detection to insulator of spark tester 120, and are converted into
Audio signal transmission gives the reception device 200, and then the reception device 200 plays after amplifying to the audio signal
Out, so that spark discharge amount of sound when its zero value detection is reached 95dB or more, avoid in detection process due to by environmental exact details noise
Influence, cause SI semi-insulation to be judged by accident, thus improve suspension insulator detection when zero determination rate of accuracy.In addition, existing
There is spark gap detection method that need to repeat to detect when zero can not be judged whether it is, while operating personnel adjusts position and listens carefully simultaneously
Determine, cause operating efficiency lower, operating risk is high (because in high-altitude, detection is repeated several times and increases risk factor).And this
By the way that spark discharge amount of sound is amplified to 95dB or more in application, it is repeatedly detected without operating personnel, and then improve detection
Operating efficiency reduces operating risk.
It should be noted that all the embodiments in this specification are described in a progressive manner, each embodiment weight
Point explanation is the difference from other embodiments, and the same or similar parts between the embodiments can be referred to each other.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of novel zero insulation detection device characterized by comprising novel spark detection device and reception device,
The novel spark detection device includes: spark tester and acquisition device, and the acquisition device is coupled with the reception device；
The acquisition device is for acquiring the spark tester generated fire during carrying out zero value detection to insulator
Flower discharging sound, and audio signal transmission is converted into the reception device；
The reception device after amplifying to the audio signal for playing back.
2. novel zero insulation detection device according to claim 1, which is characterized in that the acquisition device includes: nothing
Line sending module, audio collection module and the first power module, the audio collection module are connect with the wireless sending module,
First power module is respectively the wireless sending module and audio collection module power supply；
The audio collection module, produced by acquiring the spark tester during carrying out zero value detection to insulator
Spark discharge sound, and be converted into audio signal transmission to the wireless sending module；
The wireless sending module, for giving the audio signal transmission to the reception device.
3. novel zero insulation detection device according to claim 2, which is characterized in that the acquisition device further includes gold
Belong to shielding case, the wireless sending module, the audio collection module and first power module are placed in the metal screen
It covers in cover.
4. novel zero insulation detection device according to claim 3, which is characterized in that facing the spark tester
Spark-discharge gap side the metallic shield on offer through-hole.
5. according to the described in any item novel zero insulation detection devices of claim 2-4, which is characterized in that the wireless hair
Send module using 2.4G number sending module.
6. according to the described in any item novel zero insulation detection devices of claim 2-4, which is characterized in that the audio is adopted
Integrate module as resistance-type audio collection module, condenser type audio collection module or casting type audio collection module.
7. novel zero insulation detection device according to claim 6, which is characterized in that the spark tester includes:
First probe, the second probe, the first fixed electrode, the first sliding electrode, the second fixed electrode and the second sliding electrode, it is described
First probe is electrically connected with the described first fixed electrode, and the described first fixed electrode is slidably connected with first sliding electrode,
Second probe is electrically connected with the described second fixed electrode, and the described second fixed electrode and second sliding electrode sliding connect
It connects, the gap between first sliding electrode and second sliding electrode can be by adjusting the first sliding electrode described the
Position on one fixed electrode and/or position of second sliding electrode on the described second fixed electrode is adjusted to adjust.
8. novel zero insulation detection device according to claim 7, which is characterized in that the reception device includes: nothing
Line receiving module, audio amplification block, second power supply module and loudspeaker；The wireless receiving module and the audio amplify mould
Block connection, the audio amplification block are connect with the loudspeaker, and the wireless receiving module is coupled with the acquisition device, institute
Stating second power supply module is respectively the wireless receiving module, the audio amplification block and the power speakers；
The wireless receiving module is used for the audio signal transmission to the audio amplification block；
The audio amplification block after amplifying to the audio signal through the loudspeaker for playing back.
9. novel zero insulation detection device according to claim 8, which is characterized in that the wireless receiving module uses
2.4G digital received module.
10. novel zero insulation detection device according to claim 8, which is characterized in that the audio amplification block is
APORO audio amplification block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821073663.6U CN208421144U (en) | 2018-07-06 | 2018-07-06 | A kind of novel zero insulation detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821073663.6U CN208421144U (en) | 2018-07-06 | 2018-07-06 | A kind of novel zero insulation detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208421144U true CN208421144U (en) | 2019-01-22 |
Family
ID=65126554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821073663.6U Active CN208421144U (en) | 2018-07-06 | 2018-07-06 | A kind of novel zero insulation detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208421144U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114217176A (en) * | 2021-09-30 | 2022-03-22 | 国网山东省电力公司潍坊供电公司 | Zero-value insulator detection unmanned aerial vehicle based on spark gap method and use method thereof |
| CN115285900A (en) * | 2022-03-14 | 2022-11-04 | 国网江苏省电力有限公司镇江供电分公司 | Insulator live-line detection device |
-
2018
- 2018-07-06 CN CN201821073663.6U patent/CN208421144U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114217176A (en) * | 2021-09-30 | 2022-03-22 | 国网山东省电力公司潍坊供电公司 | Zero-value insulator detection unmanned aerial vehicle based on spark gap method and use method thereof |
| CN115285900A (en) * | 2022-03-14 | 2022-11-04 | 国网江苏省电力有限公司镇江供电分公司 | Insulator live-line detection device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103116056B (en) | High-voltage direct current broadband domain corona current measurement system | |
| CN103606483B (en) | Vacuum degree monitoring device for high voltage vacuum circuit breaker arc extinguish chamber | |
| CN208421144U (en) | A kind of novel zero insulation detection device | |
| CN204188757U (en) | Portable power equipment leakage point insulating pick-up unit | |
| CN105527504A (en) | Measurement system for space charge density | |
| CN208421145U (en) | A kind of novel spark detection device | |
| CN205958652U (en) | Ground resistance detector | |
| CN110501619A (en) | A kind of high frequency response partial pressure measuring apparatus | |
| CN109782080A (en) | A kind of cable insulation space charge signal wireless transmission system | |
| CN113253072A (en) | Mobile acoustic-optic-electromagnetic composite sensor for high-voltage switch cabinet | |
| CN202404198U (en) | Utra-high-frequency partial discharge detection device of SF6 current transformer | |
| CN108458742A (en) | A kind of railway contact line detection signal transmitting apparatus and method | |
| CN105510694B (en) | Distribution network line current collecting device and method | |
| CN204903651U (en) | Current mode cable impedance testing arrangement | |
| CN103412195A (en) | Electric power collective reading system and method for detecting thunder and lightning environment | |
| JP4663846B2 (en) | Pattern recognition type partial discharge detector | |
| CN204964691U (en) | GIS (gas -insulated switchgear) partial discharge monitoring device | |
| CN216696482U (en) | Lightning arrester lightning monitor | |
| CN115047254A (en) | Multi-parameter integrated measuring device and method for ground ion flow field | |
| CN211878106U (en) | Auxiliary rod device for ultrasonic partial discharge detection | |
| CN210243770U (en) | Wearable cable partial discharge intelligent sensor | |
| CN203707073U (en) | Aging and testing device for electronic tubes | |
| CN210572505U (en) | Ion current density measuring instrument and measuring system | |
| CN208283507U (en) | A kind of flexible contactless Partial Discharge Detection ultrasonic sensor | |
| CN106290572A (en) | A kind of Substation Insulator wireless live crack detector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |