CN108445370A - A kind of extra-high voltage GIS built-in sensors connector - Google Patents
A kind of extra-high voltage GIS built-in sensors connector Download PDFInfo
- Publication number
- CN108445370A CN108445370A CN201810614512.5A CN201810614512A CN108445370A CN 108445370 A CN108445370 A CN 108445370A CN 201810614512 A CN201810614512 A CN 201810614512A CN 108445370 A CN108445370 A CN 108445370A
- Authority
- CN
- China
- Prior art keywords
- connector
- sensors
- built
- extra
- high voltage
- 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.)
- Pending
Links
Classifications
-
- 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
- G01R31/1227—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 of components, parts or materials
- G01R31/1254—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 of components, parts or materials of gas-insulated power appliances or vacuum gaps
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0416—Connectors, terminals
Abstract
A kind of extra-high voltage GIS built-in sensors connector, is related to a kind of connector.The connector of built-in type UHF sensor is often dismounted, on the one hand there is the hidden danger of damage built-in sensors connection end, the data process＆analysis that on the other hand may influence on-line monitoring system judges.The present invention includes connector, the first connector, the second connector, third connector and the 4th connector equipped with four interfaces；The first connector detachable connection built-in sensors protector, the second connector detachable connection are equipped with the connector of live detection connector, the third connector detachable connection built-in sensors connector；The 4th connector detachable connection monitors connector on-line.The technical program is attached using dismountable mode, the built-in type UHF sensor connectors of existing GIS are improved, on the one hand it can accomplish not influencing the normal operation of partial discharge on-line monitoring system, the service life of the built-in type UHF sensors of GIS on the other hand also can be improved.
Description
Technical field
The present invention relates to a kind of connector more particularly to a kind of extra-high voltage GIS built-in sensors connectors.
Background technology
In recent years, due to gas insulated combined electrical equipment（Gas Insulated Switchgear, GIS）Occupation area of equipment
It is small, electric property is good, safe and reliable to operation, the time between overhauls(TBO) is long, easy to maintain etc., and be widely used in domestic and international power train
In system, especially in super-pressure, ultra-high voltage transformer station, the primary equipment in addition to transformer, including breaker, disconnecting switch,
Base switch, voltage transformer, current transformer, arrester, busbar etc. are substantially GIS structures.But with GIS device application
Rapid growth and run time increase, the case where GIS device failure also happens occasionally.Wherein, GIS built-in electrical insulations, which exist, lacks
Fall into so as to cause partial discharges fault account for the overwhelming majority of GIS device failure.
Currently, substation's GIS device of newly-built 220kV or more is required to be furnished with GIS partial discharge on-line monitoring systems.It utilizes
The built-in ultrahigh frequency being placed on inside GIS（ultra high frequency,UHF）Sensor monitors GIS device in real time
Partial discharge situation.In addition, other than on-line monitoring, for ultra-high voltage transformer station, also require monthly to carry out a partial discharge electrification detection.
Existing built-in type UHF sensor connector, is the connector of a triplet type, one end is connect with type UHF sensor, for receiving
The UHF signals that sensor receives；One end is connect with signal transmssion line, and received signal is transferred to data processing unit；It is another
End is equipped with overvoltage protection device.When staff carries out live detection, for there is being equipped with for metal flange package built-in extra-high
The insulator of video sensor needs to dismantle three-way connector and built-in type UHF sensor, and access partial discharge tester is charged
Test.
Since the ultra-high voltage transformer station GIS partial discharge electrification detection periods are more frequent, built-in type UHF sensor is often dismounted
On the one hand there is the hidden danger of damage built-in sensors connection end, on the other hand cause built-in type UHF sensor in band in connector
It during electro-detection, is exported to on-line monitoring system without data, the data process＆analysis that may influence on-line monitoring system is sentenced
It is disconnected.
Invention content
The technical problem to be solved in the present invention and the technical assignment of proposition are that prior art is improved and improved,
A kind of extra-high voltage GIS built-in sensors connector is provided, built-in sensors damage is reduced to reach, carries the mesh of noisy precision of analysis
's.For this purpose, the present invention takes following technical scheme.
A kind of extra-high voltage GIS built-in sensors connector includes connector equipped with four interfaces, detachable with connector
The first connector, the second connector, third connector and the 4th connector of connection；The built-in sensing of the first connector detachable connection
Device protector, the second connector detachable connection are equipped with the connector of live detection connector, and the third connector can
It is detachably connected with built-in sensors connector；The 4th connector detachable connection monitors connector on-line.The technical program is adopted
It is attached with dismountable mode, the built-in type UHF sensor connectors of existing GIS is improved, on the one hand can be accomplished
The normal operation of partial discharge on-line monitoring system is not influenced, and the built-in type UHF sensors of GIS on the other hand also can be improved uses the longevity
Life.On-line monitoring and two kinds of purposes of live detection can be achieved at the same time in the technical program, and is independent of each other, convenient, efficient.Utilize four
Flow-through GIS built-in sensors connectors, can be on the basis of not influencing former on-line monitoring system operation, while utilizing built in GIS
Type UHF sensor carries out live detection, improves the convenience of extra-high voltage GIS live detection, avoids caused by repeatedly disconnecting connector
Extra-high voltage GIS built-in sensors joint failure and replace damage connector extra-high voltage GIS built-in sensors bring human resources,
Financial resource wastes and environmental pollution.
As optimization technique means：Further include protection shell, the connector, the first connector, the second connector, third connect
Head, the 4th connector are set in the protection shell.
As optimization technique means：The protection outer casing bottom opens up first through hole, and the first through hole is for wearing
If monitoring connector on-line.
As optimization technique means：The second through-hole is opened up on front side of the protection shell, if the protection of the second through hole
Outer side is equipped with a rain cover, and the socket being connected with live detection connector is equipped in the rain cover.It can avoid rainwater etc.
It is impacted into socket.
As optimization technique means：The rain cover is set to by connector on protection shell, is set on the outside of rain cover
It is useful for the lid door blocked.It carries out that when live detection lid door can be opened, the interface of partial discharge detection instrument is connect with socket.
As optimization technique means：Four interfaces of the connector be respectively left interface, right interface, rear interface and under connect
Mouthful, the left interface is connected with the first connector；The right interface is connected with the second connector；The rear interface connects with third
Head is connected；The lower interface is connected with the 4th connector.
As optimization technique means：The connector is composed of the first connector, the second connector, and described
A connection piece, the second connector are three-way pipe；First connector is in T-shape, and left mouth connects the first connector, right mouth
The second connector is connected, second connector is connect in lateral T-shape, the lower mouth of first connector with second
The suitable for reading of part is connected, and the deutostoma of the second connector connects third connector, and the lower mouth of the second connector connects the 4th connector.
As optimization technique means：First connector, the second connector, the 4th connector are " N " type female, described the
Three connectors are " N " type male connector.3 N-type females can confirm that it connects according to live former mounting arrangements situation and monitor connector, interior on-line
Set sensor protector, reserved live detection connector.N-type male connector and partial discharge built-in sensors removably connect, and are used for GIS
The Partial discharge signal that built-in type UHF sensor receives transmits outward；In electrically 1 N-type male connector and 3 N-type female category coaxial cables
And relationship is connect, it can be achieved that on the one hand the signal of built-in sensors acquisition connects the protection of built-in sensors protector by N-type female, separately
On the one hand it is provided to on-line monitoring connector and live detection connector simultaneously.
The connector is in " ten " font, and four interfaces are respectively upper interface, lower interface, left interface and right interface.
The connector is N-type rigging-angle connector, is detachably connected with live detection connector on the downside of N-type rigging-angle connector,
Partial discharge signal is forwarded to live detection connector through the N-type rigging-angle connector；The live detection connector and socket are same by SMA
Axis transmission line is connected.It connect with the interface of partial discharge detection instrument when carrying out live detection for live detection personnel, is not required at this time
The connection for dismantling the N-type female and built-in sensors connector of three-way connector, is not interfering with partial discharge on-line monitoring system just
Often operation, at the same also avoid repeatedly dismantling may caused by connection end in built-in sensors connector damage hidden danger.
Advantageous effect：By the improvement to GIS built-in sensors connectors, former on-line monitoring system operation is not being influenced
On the basis of, while live detection is carried out using type UHF sensor built in GIS, the convenience of extra-high voltage GIS live detection is improved,
Increase the service life of extra-high voltage GIS built-in sensors.In addition it also reduces and carries out live detection using external type UHF sensor
The interference effect brought improves accuracy, the identification of live detection data.Facilitate live detection personnel's attended operation.
Description of the drawings
Fig. 1 is the main structure diagram of the first embodiment of the present invention.
Fig. 2 is the side structure schematic view of the first embodiment of the present invention.
Fig. 3 is the connecting-piece structure schematic diagram of second embodiment of the present invention.
In figure：1- connectors；The first connectors of 101-；The second connectors of 102-；The first connectors of 2-；The second connectors of 3-；4-
Third connector；The 4th connectors of 5-；6- built-in sensors protectors；7- connectors；8- live detection connectors；9- built-in sensors connect
Head；10- monitors connector on-line；11- protects shell；12- rain covers；13- pin buckle；14- sockets；15- coaxial transmission lines, in 16-
Set sensor.
Specific implementation mode
Technical scheme of the present invention is described in further detail below in conjunction with Figure of description.
Embodiment one：
As shown in Figure 1, 2, the present invention includes the connector 1 equipped with four interfaces, the first connector with 1 detachable connection of connector
2, the second connector 3, third connector 4 and the 4th connector 5；First connector, the 2 detachable connection built-in sensors protector
6,3 detachable connection of the second connector is equipped with the connector 7 of live detection connector 8, and the third connector 4 is detachable
Formula connects the built-in sensors connector 9 of built-in sensors 16；4th connector, 5 detachable connection monitors connector on-line
10.The technical program is attached using dismountable mode, is changed to the built-in type UHF sensor connectors of existing GIS 1
Into on the one hand can accomplishing the normal operation for not influencing partial discharge on-line monitoring system, the built-in UHF of GIS also on the other hand can be improved
The service life of sensor.Using four flow-through GIS built-in sensors connectors, former on-line monitoring system operation can not influenced
On the basis of, while live detection is carried out using type UHF sensor built in GIS, the convenience of extra-high voltage GIS live detection is improved,
It avoids the damage of extra-high voltage GIS built-in sensors connector 9 caused by repeatedly disconnecting connector and replaces to damage in the extra-high voltage GIS of connector
Set human resources, financial resource waste and environmental pollution that sensor is brought.
Further include protection shell 11, the connector 1, the first connector 2, second to protect connector 1 and sensor
Connector 3, third connector 4, the 4th connector 5 are set in the protection shell 11.
For convenience of connection, 11 bottom of protection shell opens up first through hole, and the first through hole is for being threaded through
Line monitors connector 10.
For convenience of connection, the front side of the protection shell 11 opens up the second through-hole, if the protection shell of the second through hole
11 outsides are equipped with a rain cover 12, and the socket 14 being connected with live detection connector 8 is equipped in the rain cover 12.Socket 14 is straight
It being connected in rain cover 12, the interface of partial discharge detection instrument is connect with socket 14, and easy to connect, convenient, service speed is fast,
Rain cover 12 is set simultaneously can avoid rainwater etc. impact into socket 14.
To further increase the safety of work, the rain cover 12 is set to by connector 1 on protection shell 11, gear
The outside of canopy 12 is equipped with the lid door for blocking.It carries out that when live detection lid door can be opened, by the interface of partial discharge detection instrument
It is connect with socket 14.The connection for not needing dismantling connection part 1N types female and built-in sensors connector 9 at this time, does not interfere with partial discharge
The normal operation of on-line monitoring system, while also avoiding repeatedly dismantling the connection in built-in sensors connector 9 caused by possibility
The damage hidden danger of end.12 front side activity lid door of cover plate of outer casing rain cover is equipped with two 12 pin buckle 13 of rain cover, can be buckled in
The left side of the cover plate of outer casing rain cover 12 carries out that when live detection 12 pin buckle 13 of the rain cover can be opened, by partial discharge detection
The interface of instrument is connect with N-type socket 14
In the present embodiment, four interfaces of the connector 1 are respectively left interface, right interface, rear interface and lower interface, described
Left interface be connected with the first connector 2；The right interface is connected with the second connector 3；The rear interface and 4 phase of third connector
Even；The lower interface is connected with the 4th connector 5.Wherein, the connector 1 is by the first connector 101, the second connector
102 are composed, and first connector 101, the second connector 102 are three-way pipe；First connector 101 is in
T-shape, left mouth connect the first connector 2, and right mouth connects the second connector 3, and second connector 102 is in lateral " T "
The lower mouth of type, first connector 101 is connected with the second the suitable for reading of connector 102, the deutostoma connection of the second connector 102
The lower mouth of third connector 4, the second connector 102 connects the 4th connector 5.First connector 2, the second connector 3, the 4th connector 5 are " N "
Type female, the third connector 4 are " N " type male connector.The Partial discharge signal that easily built-in sensors are received is through described built-in
Sensor connector 9 and the first connector 101 are forwarded to on-line monitoring connector 10, realize to the online of extra-high voltage GIS Partial discharge signal
Monitoring.3 N-type females can confirm that it connects on-line monitoring connector 10, built-in sensors are protected according to live former mounting arrangements situation
Protect device 6, reserved live detection connector 8.N-type male connector and partial discharge built-in sensors removably connect, and are used for UHF built in GIS
The Partial discharge signal that sensor receives transmits outward；In electrically 1 N-type male connector and 3 N-type female category coaxial cables and connect pass
System is, it can be achieved that on the one hand the signal of built-in sensors acquisition connects built-in sensors protector 6 by N-type female and protects, another party
Face is provided to on-line monitoring connector 10 and live detection connector 8 simultaneously.The interface of partial discharge detection instrument is connected into socket 14 just
Can carry out live detection work, at this moment on-line monitoring system still can normal operation, on-line monitoring and live detection can be achieved at the same time
Two kinds of purposes, and be independent of each other, it is convenient, efficient.
Embodiment two：As shown in figure 3, with embodiment one the difference is that：The connector 1 be in " ten " font, four
Interface is respectively upper interface, lower interface, left interface and right interface.
A kind of extra-high voltage GIS built-in sensors connector shown in figure 1 above -3 is specific embodiments of the present invention,
Substantive distinguishing features of the present invention and progress are embodied, shape can be carried out to it under the inspiration of the present invention using needs according to actual
The equivalent modifications of shape, structure etc., the row in the protection domain of this programme.
Claims (10)
1. a kind of extra-high voltage GIS built-in sensors connector, it is characterised in that：It include the connector equipped with four interfaces（1）And even
Fitting（1）First connector of detachable connection（2）, the second connector（3）, third connector（4）And the 4th connector（5）；Described
First connector（2）Detachable connection built-in sensors protector（6）, second connector（3）Detachable connection is equipped with
Live detection connector（8）Connector（7）, the third connector（4）Detachable connection built-in sensors connector（9）；Institute
The 4th connector stated（5）Detachable connection monitors connector on-line（10）.
2. a kind of extra-high voltage GIS built-in sensors connector according to claim 1, it is characterised in that：It further include protection
Shell（11）, the connector（1）, the first connector（2）, the second connector（3）, third connector（4）, the 4th connector（5）It is all provided with
In the protection shell（11）In.
3. a kind of extra-high voltage GIS built-in sensors connector according to claim 2, it is characterised in that：The protection
Shell（11）Bottom opens up first through hole, and the first through hole is for wearing on-line monitoring connector（10）.
4. a kind of extra-high voltage GIS built-in sensors connector according to claim 3, it is characterised in that：The protection
Shell（11）Front side open up the second through-hole, if the protection shell of the second through hole（11）Outside is equipped with a rain cover（12）, institute
The rain cover stated（12）In be equipped with and live detection connector（8）Connected socket（14）.
5. a kind of extra-high voltage GIS built-in sensors connector according to claim 4, it is characterised in that：Described keeps off the rain
Cover（12）Pass through connector（1）Set on protection shell（11）On, rain cover（12）Outside be equipped with lid door for blocking.
6. a kind of extra-high voltage GIS built-in sensors connector according to claim 1, it is characterised in that：The connection
Part（1）Four interfaces be respectively left interface, right interface, rear interface and lower interface, the left interface and the first connector（2）Phase
Even；The right interface and the second connector（3）It is connected；The rear interface and third connector（4）It is connected；The lower interface with
4th connector（5）It is connected.
7. a kind of extra-high voltage GIS built-in sensors connector according to claim 6, it is characterised in that：The connection
Part（1）By the first connector（101）, the second connector（102）It is composed, first connector（101）, second connection
Part（102）It is three-way pipe；First connector（101）In T-shape, left mouth connects the first connector（2）, right mouth connection
Second connector（3）, second connector（102）In lateral T-shape, first connector（101）Lower mouth with
Second connector（102）It is suitable for reading be connected, the second connector（102）Deutostoma connect third connector（4）, the second connector
（102）Lower mouth connect the 4th connector（5）.
8. a kind of extra-high voltage GIS built-in sensors connector according to claim 7, it is characterised in that：Described first
Connector（2）, the second connector（3）, the 4th connector（5）For " N " type female, the third connector（4）For " N " type male connector.
9. a kind of extra-high voltage GIS built-in sensors connector according to claim 8, it is characterised in that：The connection
Part（1）In " ten " font, four interfaces are respectively upper interface, lower interface, left interface and right interface.
10. a kind of extra-high voltage GIS built-in sensors connector according to claim 4, it is characterised in that：The connector
（7）For N-type rigging-angle connector（7）, N-type rigging-angle connector（7）Downside and live detection connector（8）It is detachably connected, partial discharge letter
Number through the N-type rigging-angle connector（7）It is forwarded to live detection connector（8）；The live detection connector（8）And socket（14）It is logical
Cross SMA coaxial transmission lines（15）It is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810614512.5A CN108445370A (en) | 2018-06-14 | 2018-06-14 | A kind of extra-high voltage GIS built-in sensors connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810614512.5A CN108445370A (en) | 2018-06-14 | 2018-06-14 | A kind of extra-high voltage GIS built-in sensors connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108445370A true CN108445370A (en) | 2018-08-24 |
Family
ID=63207018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810614512.5A Pending CN108445370A (en) | 2018-06-14 | 2018-06-14 | A kind of extra-high voltage GIS built-in sensors connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108445370A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110579693A (en) * | 2019-09-20 | 2019-12-17 | 国网浙江省电力有限公司检修分公司 | High GIS partial discharge online monitoring device and method based on wireless transmission |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070102812A (en) * | 2006-04-17 | 2007-10-22 | 엘에스산전 주식회사 | Gas insulated switchgear |
| US20090165866A1 (en) * | 2007-12-28 | 2009-07-02 | Giovanni Fima | Valve With Built-In Sensor |
| KR101241965B1 (en) * | 2012-08-31 | 2013-03-11 | 일진파워텍(주) | Surge arrester including sensor for measuring extra high voltage insulation and method for controlling thereof |
| KR20130047441A (en) * | 2011-10-31 | 2013-05-08 | 주식회사 효성 | Partial discharge diagnostic system of power apparatus using contactless phase measurement sensor |
| CN104062561A (en) * | 2014-06-21 | 2014-09-24 | 宁波理工监测科技股份有限公司 | Built-in capacitance coupling sensor for GIS local discharging detection |
| CN203929970U (en) * | 2014-01-10 | 2014-11-05 | 北京兴迪仪器有限责任公司 | A kind of cable partial discharge high-pass filtering joint |
| CN206225634U (en) * | 2016-11-24 | 2017-06-06 | 上海岩土工程勘察设计研究院有限公司 | A kind of piecing devices of fast wiring |
| CN208224425U (en) * | 2018-06-14 | 2018-12-11 | 国网浙江省电力有限公司检修分公司 | A kind of extra-high voltage GIS built-in sensors connector |
-
2018
- 2018-06-14 CN CN201810614512.5A patent/CN108445370A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070102812A (en) * | 2006-04-17 | 2007-10-22 | 엘에스산전 주식회사 | Gas insulated switchgear |
| US20090165866A1 (en) * | 2007-12-28 | 2009-07-02 | Giovanni Fima | Valve With Built-In Sensor |
| KR20130047441A (en) * | 2011-10-31 | 2013-05-08 | 주식회사 효성 | Partial discharge diagnostic system of power apparatus using contactless phase measurement sensor |
| KR101241965B1 (en) * | 2012-08-31 | 2013-03-11 | 일진파워텍(주) | Surge arrester including sensor for measuring extra high voltage insulation and method for controlling thereof |
| CN203929970U (en) * | 2014-01-10 | 2014-11-05 | 北京兴迪仪器有限责任公司 | A kind of cable partial discharge high-pass filtering joint |
| CN104062561A (en) * | 2014-06-21 | 2014-09-24 | 宁波理工监测科技股份有限公司 | Built-in capacitance coupling sensor for GIS local discharging detection |
| CN206225634U (en) * | 2016-11-24 | 2017-06-06 | 上海岩土工程勘察设计研究院有限公司 | A kind of piecing devices of fast wiring |
| CN208224425U (en) * | 2018-06-14 | 2018-12-11 | 国网浙江省电力有限公司检修分公司 | A kind of extra-high voltage GIS built-in sensors connector |
Non-Patent Citations (2)
| Title |
|---|
| YOSHITAKA KUNITAKE 等: "Influence of Sensor Location and Tank Size on Determination of Discharge Type Based on PD Electromagnetic Waves Propagation in GIS", 《电学论》, vol. 124, no. 5, pages 771 - 777 * |
| 邵先军 等: "GIS特高频局部放电检测与诊断技术的研究进展", 《浙江电力》, vol. 35, no. 10, pages 7 - 14 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110579693A (en) * | 2019-09-20 | 2019-12-17 | 国网浙江省电力有限公司检修分公司 | High GIS partial discharge online monitoring device and method based on wireless transmission |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106443144A (en) | Distributed transient overvoltage monitoring system for EHV (extra-high voltage) GIS | |
| CN204044296U (en) | A kind of partial discharge detecting system | |
| CN104022576B (en) | A kind of protection pressing plate status monitoring terminal and surveillance thereof | |
| CN110208635A (en) | A kind of insulation monitoring device of positioning function with ground that capableing of self-test | |
| CN110579693A (en) | High GIS partial discharge online monitoring device and method based on wireless transmission | |
| CN106921090A (en) | A kind of smart jack | |
| CN109470995A (en) | A kind of distribution low-voltage cable junction box state monitoring apparatus and method for early warning | |
| CN108445370A (en) | A kind of extra-high voltage GIS built-in sensors connector | |
| CN208224425U (en) | A kind of extra-high voltage GIS built-in sensors connector | |
| CN110888051A (en) | Novel detect double antenna electromagnetic wave collection of circuit breaker arc extinguishing characteristic device | |
| CN208297613U (en) | Earth connection measurement plant and ground line detection system | |
| CN105807193B (en) | A kind of same frequency with safe sampled signal is the same as phase Withstand test device | |
| CN209028170U (en) | GIS gas chamber SF6 gas pressure monitors early warning system on-line | |
| CN103439550A (en) | Electricity stealing prevention device capable of being mounted in electrified mode and mounting method thereof | |
| CN208795830U (en) | Magnetic field detection component, switchgear and distribution system | |
| CN216117869U (en) | High-voltage bushing integrated online monitoring system | |
| CN104614645A (en) | GIS and optimization method of integrated earthed ultrahigh-frequency partial discharge sensor of GIS | |
| CN114217181B (en) | GIS cable sleeve test window | |
| CN213813704U (en) | Ultrahigh frequency sensor for detecting transformer CT secondary terminal box | |
| CN208621684U (en) | A kind of high-tension line electrification display device | |
| CN208140801U (en) | A kind of bushing shell for transformer distal end power failure experimental rig | |
| CN115102280A (en) | Medium voltage distribution network fault protection system | |
| CN107356808A (en) | The overvoltage on-line monitoring system of common-path interference | |
| CN107677880A (en) | A kind of overvoltage intelligent identifying system based on the monitoring of leakage conductor tail current | |
| CN207424152U (en) | Switchgear house high-tension cable single-phase earthing warning device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |