CN110244102A - A kind of leakage current of an arrester on-line monitoring leakage current mutual inductor and on-line monitoring system - Google Patents
A kind of leakage current of an arrester on-line monitoring leakage current mutual inductor and on-line monitoring system Download PDFInfo
- Publication number
- CN110244102A CN110244102A CN201910691298.8A CN201910691298A CN110244102A CN 110244102 A CN110244102 A CN 110244102A CN 201910691298 A CN201910691298 A CN 201910691298A CN 110244102 A CN110244102 A CN 110244102A
- Authority
- CN
- China
- Prior art keywords
- leakage current
- arrester
- line monitoring
- mutual inductor
- current mutual
- 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
- 238000012544 monitoring process Methods 0.000 title claims abstract description 68
- 238000005452 bending Methods 0.000 claims abstract description 4
- QVFWZNCVPCJQOP-UHFFFAOYSA-N chloralodol Chemical compound CC(O)(C)CC(C)OC(O)C(Cl)(Cl)Cl QVFWZNCVPCJQOP-UHFFFAOYSA-N 0.000 claims description 10
- 238000004891 communication Methods 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical group [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052744 lithium Inorganic materials 0.000 claims description 3
- 230000000737 periodic effect Effects 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 5
- 238000007689 inspection Methods 0.000 abstract description 4
- 238000010606 normalization Methods 0.000 abstract description 3
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 208000025274 Lightning injury Diseases 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 229960001296 zinc oxide Drugs 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
- G01R15/18—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
-
- 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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The invention discloses a kind of leakage current of an arrester on-line monitoring leakage current mutual inductor and on-line monitoring systems, including the toroidal shell with opening, each outward bending in the both ends of opening forms an interconnecting piece being parallel to each other, interconnecting piece is equipped with bolt hole, and two interconnecting pieces are flexibly connected by the bolt being equipped in bolt hole；The inner cavity of toroidal shell is equipped with signal acquisition circuit, wireless transmitter module and power module, and toroidal shell is equipped with the antenna being connected with wireless transmitter module.The present invention uses open type structure, and when installation does not need equipment power failure, improves the duration and reliability of power supply；The equipment state that arrester can be fed back immediately judges automatically the hidden danger damage situations of equipment, issues warning information automatically, checks and intervenes without artificial；Personal safety is protected in inspection without personnel to equipment；Using wireless on-line normalization means, cabling and signal wire can be greatly reduced；Using self-powered mode, equipment is non-maintaining.
Description
Technical field
The present embodiments relate to current transformer technical fields more particularly to a kind of leakage current of an arrester to monitor on-line
Current transformer and on-line monitoring system.
Background technique
Arrester monitor on-line device (also known as lightning arrester leakance and discharge counter), be in high-voltage alternating electric system with
The matching used instrument of Zinc-Oxide Arrester, the instrument are serially connected in arrester ground circuit.Milliammeter in monitor is used for
Monitor the leakage current (peak value) under working voltage by arrester, it can be determined that whether make moist inside arrester, whether element is different
Situations such as normal；Filthy table is used to monitor the size (namely filthy size) of the filthy electric current outside arrestor porcelain bushing；Movement
Counter then records the overvoltage action frequency of arrester.
It former, when arrester is monitored on-line in real time not yet, often appears under thunderstorm weather, incident
After being struck by lightning, arrester is impaired but still the case where continue networking on-line operation in spite of illness with equipment deficiency hidden danger, due to impaired
There is the possibility of explosion in arrester, this brings adverse effect for the safety and stability of power grid at any time.
Common some arrester on-Line Monitor Devices on the market at present, as shown in Fig. 1~2, there are high failure rates, online
The problem of rate is poor, and when installation needs the high-tension apparatuses such as arrester to have a power failure and also need to lay a large amount of cable and signal wire, peace
It is very inconvenient to fill.
Summary of the invention
The present invention provides a kind of leakage current of an arrester on-line monitoring leakage current mutual inductor and on-line monitoring system, existing to solve
There is the deficiency of technology.
To achieve the above object, the present invention provides technical solution below:
In a first aspect, the embodiment of the present invention provides a kind of leakage current of an arrester on-line monitoring leakage current mutual inductor, including band
The toroidal shell of opening, each outward bending in the both ends of the opening form an interconnecting piece being parallel to each other, on the interconnecting piece
Equipped with bolt hole, two interconnecting pieces are flexibly connected by the bolt being equipped in the bolt hole；
The inner cavity of the toroidal shell is equipped with signal acquisition circuit, wireless transmitter module and power module, the annular
Shell is equipped with the antenna being connected with the wireless transmitter module.
Further, in the leakage current of an arrester on-line monitoring leakage current mutual inductor, the toroidal shell is by having bullet
The ambroin of property is made.
Further, power module described in the leakage current of an arrester on-line monitoring leakage current mutual inductor is lithium battery
Source module or solar-electricity source module.
Further, when the power module is solar energy in the leakage current of an arrester on-line monitoring leakage current mutual inductor
When power module, solar panels are additionally provided on the toroidal shell.
Further, be equipped in bolt hole described in the leakage current of an arrester on-line monitoring leakage current mutual inductor with it is described
The internal screw thread of the external screw thread adaptation of bolt.
Second aspect, the embodiment of the present invention provide a kind of leakage current of an arrester on-line monitoring system, including monitoring backstage,
LoRa cordless communication network and leakage current of an arrester on-line monitoring leakage current mutual inductor as described in relation to the first aspect；
The leakage current of an arrester on-line monitoring leakage current mutual inductor passes through the LoRa cordless communication network and the prison
Control backstage is connected；
The leakage current of an arrester on-line monitoring leakage current mutual inductor installs the leakage current monitoring portion of arrester at the scene
Position, for periodic monitoring leakage current of an arrester analog signals and is converted into digital signal, then passes through the LoRa channel radio
Communication network is by the digital data transmission to monitoring backstage；
The monitoring backstage is arranged in remote server, for the digital signal to be shown in man-machine interface,
And by logic judgment size of current, whether the leakage current to judge arrester is normal.
Further, in the leakage current of an arrester on-line monitoring leakage current mutual inductor, the monitoring backstage is also used to reality
When the monitoring information that is sended over by the leakage current of an arrester on-line monitoring leakage current mutual inductor of recording and storage, for system
Call and generate report and history curve.
A kind of leakage current of an arrester on-line monitoring leakage current mutual inductor and on-line monitoring system provided in an embodiment of the present invention,
Using open type structure, when installation, does not need equipment power failure, improves the duration and reliability of power supply；It can be in thunderstorm weather
Under, after arrester is struck by lightning, the equipment state of arrester is fed back immediately, judges automatically the hidden danger damage situations of equipment, automatically
Warning information is issued, checks and intervenes without artificial；Inspection without personnel to equipment eliminates the intervention of personnel, protects people
Body safety；Using wireless on-line normalization means, cabling and signal wire can be greatly reduced；Using self-powered mode,
Equipment is non-maintaining.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art
To obtain other attached drawings according to these attached drawings.
Fig. 1 is the structural side view of current transformer in the prior art；
Fig. 2 is the structure front view of current transformer in the prior art；
Fig. 3 is that the structure for the leakage current of an arrester on-line monitoring leakage current mutual inductor that the embodiment of the present invention one provides is overlooked
Figure；
Fig. 4 is that the structure for the leakage current of an arrester on-line monitoring leakage current mutual inductor that the embodiment of the present invention one provides is faced
Figure；
Fig. 5 is the structural representation for the leakage current of an arrester on-line monitoring leakage current mutual inductor that the embodiment of the present invention one provides
Figure；
Fig. 6 is the structural schematic diagram of leakage current of an arrester on-line monitoring system provided by Embodiment 2 of the present invention.
Appended drawing reference:
Toroidal shell 10, interconnecting piece 20, signal acquisition circuit 30, wireless transmitter module 40, power module 50, antenna 60；
Monitoring backstage 100, LoRa cordless communication network 200, leakage current of an arrester on-line monitoring leakage current mutual inductor 300.
Specific embodiment
To enable the purpose of the present invention, feature, advantage more obvious and understandable, implement below in conjunction with the present invention
Attached drawing in example, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that reality disclosed below
Applying example is only a part of the embodiment of the present invention, and not all embodiment.Based on the embodiments of the present invention, this field is common
Technical staff's all other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
In the description of the present invention, it is to be understood that, when a component is considered as " connection " another component, it can
To be directly to another component or may be simultaneously present the component being centrally located.When a component is considered as " setting
Set " another component, it, which can be, is set up directly on another component or may be simultaneously present the component being centrally located.
In addition, the indicating positions such as term " length " " short " "inner" "outside" or positional relationship for the orientation that is shown based on attached drawing or
Person's positional relationship is merely for convenience of the description present invention, rather than the device or original part of indication or suggestion meaning must have this
Specific orientation is operated with specific orientation construction, should not be understood as limitation of the invention with this.
To further illustrate the technical scheme of the present invention below with reference to the accompanying drawings and specific embodiments.
Embodiment one
Fig. 3~5 are please referred to, the embodiment of the present invention provides a kind of leakage current of an arrester on-line monitoring leakage current mutual inductor, packet
The toroidal shell 10 with opening is included, each outward bending in the both ends of the opening forms an interconnecting piece 20 being parallel to each other, described
Interconnecting piece 20 is equipped with bolt hole, and two interconnecting pieces 20 are flexibly connected by the bolt being equipped in the bolt hole；
The inner cavity of the toroidal shell 10 is equipped with signal acquisition circuit 30, wireless transmitter module 40 and power module 50,
The toroidal shell 10 is equipped with the antenna 60 being connected with the wireless transmitter module 40.
It should be noted that realizing that the lossless band of current transformer is electrically accessed using the structure of opening, being easily installed.
Preferably, the toroidal shell 10 is made of elastic ambroin.
Preferably, the power module 50 is lithium battery source module or solar-electricity source module, so that the Current Mutual Inductance
The long-term non-maintaining reliable on-line operation of device, it is versatile.
Preferably, when the power module 50 is solar-electricity source module, the sun is additionally provided on the toroidal shell 10
It can plate.
Preferably, the internal screw thread being adapted to the external screw thread of the bolt is equipped in the bolt hole.
A kind of leakage current of an arrester on-line monitoring leakage current mutual inductor provided in an embodiment of the present invention, using open type knot
Structure, when installation, do not need equipment power failure, improve the duration and reliability of power supply；Can under thunderstorm weather, arrester by
After lightning stroke, the equipment state of arrester is fed back immediately, the hidden danger damage situations of equipment is judged automatically, issues warning information automatically,
Without artificially checking and intervening；Inspection without personnel to equipment eliminates the intervention of personnel, protects personal safety；Using nothing
The on-line normalization means of line, can greatly reduce cabling and signal wire；Using self-powered mode, equipment is non-maintaining.
Embodiment two
Referring to FIG. 6, the embodiment of the present invention provides a kind of leakage current of an arrester on-line monitoring system, including monitoring backstage
100, leakage current of an arrester on-line monitoring leakage current mutual inductor 300 described in LoRa cordless communication network 200 and embodiment one；
The leakage current of an arrester on-line monitoring leakage current mutual inductor 300 by the LoRa cordless communication network 200 with
The monitoring backstage 100 is connected；
The leakage current of an arrester on-line monitoring leakage current mutual inductor 300 installs the leakage current monitoring of arrester at the scene
Position for periodic monitoring leakage current of an arrester analog signals and is converted into digital signal, then wireless by the LoRa
Communication network 200 is by the digital data transmission to monitoring backstage 100；
The monitoring backstage 100 is arranged in remote server, for showing the digital signal in man-machine interface
Show, and by logic judgment size of current, whether the leakage current to judge arrester is normal, discovery in time has operation hidden danger
Arrester.
Preferably, monitoring backstage 100 is also used to real-time recording and storage and is supervised online by the leakage current of an arrester
The monitoring information that current transformer 300 sends over is surveyed, so that report and history curve are called and generated to system, facilitates O&M people
Member's track record.
A kind of leakage current of an arrester on-line monitoring system provided in an embodiment of the present invention, using open type structure, installation
When do not need equipment power failure, improve the duration and reliability of power supply；Can under thunderstorm weather, after arrester is struck by lightning,
The equipment state for feeding back arrester immediately, judges automatically the hidden danger damage situations of equipment, issues warning information automatically, without artificial
It checks and intervenes；Inspection without personnel to equipment eliminates the intervention of personnel, protects personal safety；Using wireless online
Transmission means can greatly reduce cabling and signal wire；Using self-powered mode, equipment is non-maintaining.
So far, the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although referring to aforementioned reality
Applying example, invention is explained in detail, those skilled in the art should understand that: it still can be to aforementioned each
Technical solution documented by embodiment is modified or equivalent replacement of some of the technical features；And these are modified
Or replacement, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (7)
1. a kind of leakage current of an arrester on-line monitoring leakage current mutual inductor, which is characterized in that including the toroidal shell with opening, institute
Each outward bending in both ends for stating opening forms an interconnecting piece being parallel to each other, and the interconnecting piece is equipped with bolt hole, two institutes
Interconnecting piece is stated to be flexibly connected by the bolt being equipped in the bolt hole；
The inner cavity of the toroidal shell is equipped with signal acquisition circuit, wireless transmitter module and power module, the toroidal shell
It is equipped with the antenna being connected with the wireless transmitter module.
2. leakage current of an arrester on-line monitoring leakage current mutual inductor according to claim 1, which is characterized in that the annular
Shell is made of elastic ambroin.
3. leakage current of an arrester on-line monitoring leakage current mutual inductor according to claim 1, which is characterized in that the power supply
Module is lithium battery source module or solar-electricity source module.
4. leakage current of an arrester on-line monitoring leakage current mutual inductor according to claim 3, which is characterized in that when the electricity
When source module is solar-electricity source module, solar panels are additionally provided on the toroidal shell.
5. leakage current of an arrester on-line monitoring leakage current mutual inductor according to claim 1, which is characterized in that the bolt
The internal screw thread being adapted to the external screw thread of the bolt is equipped in hole.
6. a kind of leakage current of an arrester on-line monitoring system, which is characterized in that including monitoring backstage, LoRa cordless communication network
With leakage current of an arrester on-line monitoring leakage current mutual inductor as claimed in any one of claims 1 to 5；
After the leakage current of an arrester on-line monitoring leakage current mutual inductor is by the LoRa cordless communication network and the monitoring
Platform is connected；
The leakage current that the leakage current of an arrester on-line monitoring leakage current mutual inductor installs arrester at the scene monitors position, uses
In periodic monitoring leakage current of an arrester analog signals and it is converted into digital signal, then passes through the LoRa cordless communication network
By the digital data transmission to the monitoring backstage；
The monitoring backstage is arranged in remote server, for showing the digital signal in man-machine interface, and leads to
Logic judgment size of current is crossed, whether the leakage current to judge arrester is normal.
7. leakage current of an arrester on-line monitoring leakage current mutual inductor according to claim 6, which is characterized in that the monitoring
Backstage is also used to the monitoring that real-time recording and storage is sended over by the leakage current of an arrester on-line monitoring leakage current mutual inductor
Information, so that report and history curve are called and generated to system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910691298.8A CN110244102A (en) | 2019-07-29 | 2019-07-29 | A kind of leakage current of an arrester on-line monitoring leakage current mutual inductor and on-line monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910691298.8A CN110244102A (en) | 2019-07-29 | 2019-07-29 | A kind of leakage current of an arrester on-line monitoring leakage current mutual inductor and on-line monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110244102A true CN110244102A (en) | 2019-09-17 |
Family
ID=67893762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910691298.8A Pending CN110244102A (en) | 2019-07-29 | 2019-07-29 | A kind of leakage current of an arrester on-line monitoring leakage current mutual inductor and on-line monitoring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110244102A (en) |
Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2938354Y (en) * | 2006-08-04 | 2007-08-22 | 北京恒源利互感器技术有限公司 | Open-type current mutual inductor |
| RU2345432C1 (en) * | 2007-10-01 | 2009-01-27 | Открытое акционерное общество "Энергомашкорпорация" | Outdoor high-voltage current transformer |
| JP2009092539A (en) * | 2007-10-10 | 2009-04-30 | Chugoku Electric Power Co Inc:The | Clamp meter |
| US20090309754A1 (en) * | 2008-06-16 | 2009-12-17 | Jimmy Bou | Wireless current transformer |
| CN201465789U (en) * | 2009-06-04 | 2010-05-12 | 北京恒源利通电力技术有限公司 | Open type current mutual inductor |
| CN201607501U (en) * | 2009-12-22 | 2010-10-13 | 江苏省电力公司宝应县供电公司 | Remote online monitoring device for current leakage of lightening arrester |
| CN202034227U (en) * | 2011-03-08 | 2011-11-09 | 江苏科兴电器有限公司 | Open-type high-accuracy current transformer |
| CN202267721U (en) * | 2011-10-21 | 2012-06-06 | 宣自平 | Lightning arrester online monitoring device having GPRS module |
| CN203085344U (en) * | 2012-07-12 | 2013-07-24 | 广州智天电子科技有限公司 | Integrated digital current transformer |
| CN103364615A (en) * | 2013-07-17 | 2013-10-23 | 上海思盛电力控制技术有限公司 | Arrester leakage current monitor isolation sampling circuit |
| CN204088606U (en) * | 2014-09-28 | 2015-01-07 | 国家电网公司 | Support type current transformer connecting clamp |
| US20150168472A1 (en) * | 2013-12-12 | 2015-06-18 | Electric Power Research Institute, Inc. | Apparatus and method for measuring leakage currents on porcelain and glass insulator disc strings |
| CN205038271U (en) * | 2015-08-27 | 2016-02-17 | 国家电网公司 | No line locking zinc oxide arrester on -line monitoring device of distributing type |
| CN206710491U (en) * | 2017-05-10 | 2017-12-05 | 合肥瑞达软件科技有限公司 | A kind of band punctures the open C T acquisition terminals of power taking |
| CN108362971A (en) * | 2018-02-17 | 2018-08-03 | 牟小林 | A kind of portable earth detector |
| CN109030924A (en) * | 2018-06-13 | 2018-12-18 | 国网福建省电力有限公司龙岩供电公司 | Suitable for the three-phase lightning protector leakage current wireless monitoring device in switchgear |
| CN109638966A (en) * | 2018-12-28 | 2019-04-16 | 广州中光电气科技有限公司 | A kind of monitoring of arrester intelligent online, data remote visualization cloud platform system |
| JP2019124515A (en) * | 2018-01-15 | 2019-07-25 | 住友電気工業株式会社 | Electric wire temperature measuring device |
| CN210294375U (en) * | 2019-07-29 | 2020-04-10 | 广东电网有限责任公司 | Lightning arrester leakage current on-line monitoring current transformer and on-line monitoring system |
-
2019
- 2019-07-29 CN CN201910691298.8A patent/CN110244102A/en active Pending
Patent Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2938354Y (en) * | 2006-08-04 | 2007-08-22 | 北京恒源利互感器技术有限公司 | Open-type current mutual inductor |
| RU2345432C1 (en) * | 2007-10-01 | 2009-01-27 | Открытое акционерное общество "Энергомашкорпорация" | Outdoor high-voltage current transformer |
| JP2009092539A (en) * | 2007-10-10 | 2009-04-30 | Chugoku Electric Power Co Inc:The | Clamp meter |
| US20090309754A1 (en) * | 2008-06-16 | 2009-12-17 | Jimmy Bou | Wireless current transformer |
| CN201465789U (en) * | 2009-06-04 | 2010-05-12 | 北京恒源利通电力技术有限公司 | Open type current mutual inductor |
| CN201607501U (en) * | 2009-12-22 | 2010-10-13 | 江苏省电力公司宝应县供电公司 | Remote online monitoring device for current leakage of lightening arrester |
| CN202034227U (en) * | 2011-03-08 | 2011-11-09 | 江苏科兴电器有限公司 | Open-type high-accuracy current transformer |
| CN202267721U (en) * | 2011-10-21 | 2012-06-06 | 宣自平 | Lightning arrester online monitoring device having GPRS module |
| CN203085344U (en) * | 2012-07-12 | 2013-07-24 | 广州智天电子科技有限公司 | Integrated digital current transformer |
| CN103364615A (en) * | 2013-07-17 | 2013-10-23 | 上海思盛电力控制技术有限公司 | Arrester leakage current monitor isolation sampling circuit |
| US20150168472A1 (en) * | 2013-12-12 | 2015-06-18 | Electric Power Research Institute, Inc. | Apparatus and method for measuring leakage currents on porcelain and glass insulator disc strings |
| CN204088606U (en) * | 2014-09-28 | 2015-01-07 | 国家电网公司 | Support type current transformer connecting clamp |
| CN205038271U (en) * | 2015-08-27 | 2016-02-17 | 国家电网公司 | No line locking zinc oxide arrester on -line monitoring device of distributing type |
| CN206710491U (en) * | 2017-05-10 | 2017-12-05 | 合肥瑞达软件科技有限公司 | A kind of band punctures the open C T acquisition terminals of power taking |
| JP2019124515A (en) * | 2018-01-15 | 2019-07-25 | 住友電気工業株式会社 | Electric wire temperature measuring device |
| CN108362971A (en) * | 2018-02-17 | 2018-08-03 | 牟小林 | A kind of portable earth detector |
| CN109030924A (en) * | 2018-06-13 | 2018-12-18 | 国网福建省电力有限公司龙岩供电公司 | Suitable for the three-phase lightning protector leakage current wireless monitoring device in switchgear |
| CN109638966A (en) * | 2018-12-28 | 2019-04-16 | 广州中光电气科技有限公司 | A kind of monitoring of arrester intelligent online, data remote visualization cloud platform system |
| CN210294375U (en) * | 2019-07-29 | 2020-04-10 | 广东电网有限责任公司 | Lightning arrester leakage current on-line monitoring current transformer and on-line monitoring system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105510779A (en) | Arrester on-line monitoring system and application method thereof | |
| CN208596190U (en) | The arrester on-line monitoring system of tape counter | |
| CN107990938A (en) | The monitoring system of remote monitoring electric power cabinet use environment | |
| CN206649115U (en) | A kind of EHV cable line insulation defect local discharge signal identification device | |
| CN107561341A (en) | Arrester resistance current on-line monitoring method based on wireless synchronization Sampling techniques | |
| CN203720585U (en) | Power tunnel semi-offline manhole cover monitoring terminal | |
| CN207751530U (en) | Highway lightning protection facility intelligent online monitors system | |
| CN107677880A (en) | A kind of overvoltage intelligent identifying system based on the monitoring of leakage conductor tail current | |
| CN110244102A (en) | A kind of leakage current of an arrester on-line monitoring leakage current mutual inductor and on-line monitoring system | |
| CN204881911U (en) | Wireless monitoring and early warning device of sleeve pipe in transformer substation | |
| CN209231449U (en) | A kind of distribution network line disconnection fault positioning device | |
| CN114121393B (en) | Gapless zinc oxide arrester based on-line monitoring | |
| CN210294375U (en) | Lightning arrester leakage current on-line monitoring current transformer and on-line monitoring system | |
| CN202814597U (en) | High-voltage power transmission line temperature measuring system | |
| CN202886485U (en) | Remote monitoring device for electrified railway high-voltage lightning arrester | |
| CN106208023B (en) | A kind of single-phase arc overvoltage limits device based on metallic ground principle | |
| CN104362520A (en) | Intelligent high voltage verification display and block system of substation | |
| CN205210162U (en) | High tension cable sheath earth current on -line monitoring system | |
| CN103532239A (en) | On-line teletransmission display and alarm device for power operation equipment | |
| CN210693030U (en) | SF6 meter information monitoring device for transformer substation | |
| CN204131224U (en) | Case becomes intelligent monitor system | |
| CN208636389U (en) | Low-voltage leakage current monitoring prior-warning device | |
| CN203522336U (en) | Power operation equipment on-line remote display and alarm device | |
| CN209046369U (en) | A kind of electric energy collection device | |
| CN205122365U (en) | From monitoring type transformer bushing |
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 |