CN105823574A - Wireless temperature measurement device for monitoring temperature of arm contact of circuit breaker - Google Patents
Wireless temperature measurement device for monitoring temperature of arm contact of circuit breaker Download PDFInfo
- Publication number
- CN105823574A CN105823574A CN201610330468.6A CN201610330468A CN105823574A CN 105823574 A CN105823574 A CN 105823574A CN 201610330468 A CN201610330468 A CN 201610330468A CN 105823574 A CN105823574 A CN 105823574A
- Authority
- CN
- China
- Prior art keywords
- circuit
- receiving terminal
- temperature
- temperature measurement
- outfan
- 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
- 238000009529 body temperature measurement Methods 0.000 title claims abstract description 61
- 238000012544 monitoring process Methods 0.000 title claims abstract description 17
- 238000013523 data management Methods 0.000 claims abstract description 15
- 230000003750 conditioning effect Effects 0.000 claims description 9
- 238000007726 management method Methods 0.000 claims description 9
- 230000005684 electric field Effects 0.000 claims description 8
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 3
- 238000002955 isolation Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
-
- 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)
- Computer Networks & Wireless Communication (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
A wireless temperature measurement device for monitoring the temperature of an arm contact of a circuit breaker, comprising first to sixth temperature measurement components, a data receiving device, and a background data management system. Data is transmitted through wireless connection between the first temperature measurement component and the data receiving device, between the second temperature measurement component and the data receiving device, between the third temperature measurement component and the data receiving device, between the fourth temperature measurement component and the data receiving device, between the fifth temperature measurement component and the data receiving device and between the sixth temperature measurement component and the data receiving device. Data is transmitted through wired or wireless connection between the data receiving device and the background data management system. The beneficial effects are as follows: the background data management system can count, analyze and store received circuit breaker arm temperature signals, create various statistical reports, and provide decision analysis and fault prediction and early-warning; and data is transmitted wirelessly between the temperature measurement components and the data receiving device, the problem of physical isolation between high and low voltages is solved, and data is transmitted in a wired or wireless way between the data receiving device and the background data management system.
Description
Technical field
The present invention relates to a kind of breaker of switch cabinet contact arm temperature online composite monitoring device, to ensureing that switchgear safe operation has very important significance.
Background technology
One of key subjects of safe operation monitoring always safe operation of power system of high-tension switch cabinet, but, a typically each check weighing is in the research to electrical parameter (voltage, electric current, electrical power) real time monitoring at present, its non electrical quantity on-line measurement (such as the contact position degree of bias, contact load, contact temperature), owing to being disturbed limited by high voltage and point position and highfield, solves the most very well.nullCommonly use at present is trolley type switch cabinet，Owing to using plug to couple between chopper with switch cubicle，When dolly and switch cubicle are because manufacturing、Transport and install and bad etc. contact will be caused bad，Contact resistance increases，Occur that contact temperature rise is too high even to burn、Cause power failure，These phenomenons are especially prominent on high-current switch such as incoming line cabinet，And impact is greatly，High-voltage switch contact and bus bar junction are in high voltage、High-temperature、In highfield and extremely strong electromagnetic interference environment，Traditional temperature instrumentation such as thermocouple、Infrared radiation thermometers etc. are vulnerable to interference and the impact of these factors，Thus these positions cannot be carried out direct contact measurement，Thus cannot really obtain the real work state of high-tension switch cabinet，So that device interior hot-spot is the most still run in " in spite of illness "，A kind of wireless temperature measuring device for monitoring breaker contact arm contact temperature is provided for this present invention，Can be with on-line monitoring circuit breaker contact arm contact temperature to finding that circuit breaker contact arm hot stall provides a kind of very important means early.
Summary of the invention
The technical problem to be solved is, how to use CT or electric field to power, and combining wireless delivery and reception module, solves high-low pressure physical isolation and contact arm temperature data acquisition problem, to ensure the healthy and safe operation of switch cubicle.
For solving above-mentioned technical problem, the present invention provides a kind of wireless temperature measuring device for monitoring breaker contact arm contact temperature, including the first temperature measurement component, the second temperature measurement component, the 3rd temperature measurement component, the 4th temperature measurement component, the 5th temperature measurement component, the 6th temperature measurement component, data sink, data management system；First temperature measurement component, the second temperature measurement component, the 3rd temperature measurement component, the 4th temperature measurement component, the 5th temperature measurement component, the 6th temperature measurement component respectively and use wireless connections transmission data between data sink, use wired connection or radio connection transmission data between data sink and data management system.
Temperature measurement component includes circular grading shield and is positioned at the temperature measurement circuit of circular grading shield；Temperature measurement circuit is arranged on circuit breaker contact arm, electrically connects between circular grading shield and circuit breaker contact arm, makes circular grading shield be in isoelectric level with circuit breaker contact arm.
Temperature measurement circuit includes temperature sensor, signal conditioning circuit, microprocessor, wireless transmitter module, wireless receiving module, toggle switch, power circuit；The outfan of temperature sensor is connected with the input of signal conditioning circuit；The outfan of signal conditioning circuit is connected with the A/D end of microprocessor；The input of wireless transmitter module is connected with the I/O mouth of microprocessor；The outfan of wireless receiving module is connected with the I/O mouth of microprocessor；The outfan of toggle switch is connected with the I/O mouth of microprocessor；The outfan of power circuit is connected with the power end of microprocessor；Temperature sensor is fixed on circuit breaker contact arm, measures contact arm temperature.
Power circuit has two schemes: one is electric field power taking power supply, and one is CT power taking power supply；Electric field power taking power supply includes power taking plate, rectification circuit, accumulator, electric power management circuit；Power taking plate is connected with the input of rectification circuit；The outfan of rectification circuit is connected with the input of accumulator；The outfan of accumulator is connected with the input of electric power management circuit；The outfan of electric power management circuit is the outfan of power circuit；
CT power taking power supply includes silicon steel core, coil, current-limiting circuit, CT rectification circuit, filter circuit, mu balanced circuit；Coil winding, on silicon steel core, is connected with the input of CT rectification circuit after the outfan concatenation current-limiting circuit of coil；The outfan of CT rectification circuit is connected with the input of filter circuit；The outfan of filter circuit is connected with the input of mu balanced circuit；The outfan of mu balanced circuit is the outfan of power circuit.
Data sink includes receiving terminal wireless transmitter module, receiving terminal wireless receiving module, receiving terminal Temperature Humidity Sensor, receiving terminal microprocessor, receiving terminal warning circuit, receiving terminal power circuit, receiving terminal display circuit, receiving terminal key circuit, receiving terminal communication interface circuit；The input of receiving terminal wireless transmitter module is connected with the I/O mouth of receiving terminal microprocessor；The outfan of receiving terminal wireless receiving module is connected with the I/O mouth of receiving terminal microprocessor；The outfan of receiving terminal Temperature Humidity Sensor is connected with the A/D end of receiving terminal microprocessor；The input of receiving terminal warning circuit is connected with the I/O mouth of receiving terminal microprocessor；The input of receiving terminal display circuit is connected with the I/O mouth of receiving terminal microprocessor；The outfan of receiving terminal key circuit is connected with the I/O mouth of receiving terminal microprocessor；Receiving terminal power circuit is connected with the power end of receiving terminal microprocessor；The input of receiving terminal communication interface circuit is connected with the I/O mouth of receiving terminal microprocessor.
The circuit breaker contact arm temperature signal received mainly is added up, analyzes, is stored by data management system, forms all kinds of statistical report form, and provides decision analysis and failure predication and early warning.
The positive effect of the present invention is: the circuit breaker contact arm temperature signal received can be added up, analyze, store by (1) data management system, forms all kinds of statistical report form, and provides decision analysis and failure predication and early warning；(2) wirelessly transmitting data between temperature measurement component and data sink, solves high-low pressure physical isolation problem, uses wired or wireless mode to transmit data between data sink and data management system.
Accompanying drawing explanation
Fig. 1 is a kind of wireless temperature measuring device attachment structure figure for monitoring breaker contact arm contact temperature；
Fig. 2 is temperature measurement component composition and connection figure；
Fig. 3 is temperature measurement circuit composition and connection figure；
Fig. 4 is the circuit theory diagrams of electric field power taking power supply；
Fig. 5 is CT power taking power circuit principle figure；
Fig. 6 is the circuit theory diagrams of data sink.
1-circuit breaker contact arm, 2-power taking plate, 3-silicon steel core, 4-coil in figure.
Detailed description of the invention
As shown in Figure 1, a kind of wireless temperature measuring device for monitoring breaker contact arm contact temperature, including the first temperature measurement component, the second temperature measurement component, the 3rd temperature measurement component, the 4th temperature measurement component, the 5th temperature measurement component, the 6th temperature measurement component, data sink, data management system；First temperature measurement component, the second temperature measurement component, the 3rd temperature measurement component, the 4th temperature measurement component, the 5th temperature measurement component, the 6th temperature measurement component respectively and use wireless connections transmission data between data sink, use wired connection or radio connection transmission data between data sink and data management system.
As shown in Figure 2, temperature measurement component includes circular grading shield and is positioned at the temperature measurement circuit of circular grading shield；Temperature measurement circuit is arranged on circuit breaker contact arm, electrically connects between circular grading shield and circuit breaker contact arm, makes circular grading shield be in isoelectric level with circuit breaker contact arm.
As shown in Figure 3, temperature measurement circuit includes temperature sensor, signal conditioning circuit, microprocessor, wireless transmitter module, wireless receiving module, toggle switch, power circuit；The outfan of temperature sensor is connected with the input of signal conditioning circuit；The outfan of signal conditioning circuit is connected with the A/D end of microprocessor；The input of wireless transmitter module is connected with the I/O mouth of microprocessor；The outfan of wireless receiving module is connected with the I/O mouth of microprocessor；The outfan of toggle switch is connected with the I/O mouth of microprocessor；The outfan of power circuit is connected with the power end of microprocessor；Temperature sensor is fixed on circuit breaker contact arm, measures contact arm temperature.
As shown in accompanying drawing 4, Fig. 5, power circuit has two schemes: one is electric field power taking power supply, and one is CT power taking power supply；Electric field power taking power supply includes power taking plate, rectification circuit, accumulator, electric power management circuit；Power taking plate is connected with the input of rectification circuit；The outfan of rectification circuit is connected with the input of accumulator；The outfan of accumulator is connected with the input of electric power management circuit；The outfan of electric power management circuit is the outfan of power circuit；
CT power taking power supply includes silicon steel core, coil, current-limiting circuit, CT rectification circuit, filter circuit, mu balanced circuit；Coil winding, on silicon steel core, is connected with the input of CT rectification circuit after the outfan concatenation current-limiting circuit of coil；The outfan of CT rectification circuit is connected with the input of filter circuit；The outfan of filter circuit is connected with the input of mu balanced circuit；The outfan of mu balanced circuit is the outfan of power circuit.
As shown in Figure 6, data sink includes receiving terminal wireless transmitter module, receiving terminal wireless receiving module, receiving terminal Temperature Humidity Sensor, receiving terminal microprocessor, receiving terminal warning circuit, receiving terminal power circuit, receiving terminal display circuit, receiving terminal key circuit, receiving terminal communication interface circuit；The input of receiving terminal wireless transmitter module is connected with the I/O mouth of receiving terminal microprocessor；The outfan of receiving terminal wireless receiving module is connected with the I/O mouth of receiving terminal microprocessor；The outfan of receiving terminal Temperature Humidity Sensor is connected with the A/D end of receiving terminal microprocessor；The input of receiving terminal warning circuit is connected with the I/O mouth of receiving terminal microprocessor；The input of receiving terminal display circuit is connected with the I/O mouth of receiving terminal microprocessor；The outfan of receiving terminal key circuit is connected with the I/O mouth of receiving terminal microprocessor；Receiving terminal power circuit is connected with the power end of receiving terminal microprocessor；The input of receiving terminal communication interface circuit is connected with the I/O mouth of receiving terminal microprocessor.
The circuit breaker contact arm temperature signal received mainly is added up, analyzes, is stored by data management system, forms all kinds of statistical report form, and provides decision analysis and failure predication and early warning.
Claims (7)
1., for a wireless temperature measuring device for monitoring breaker contact arm contact temperature, it is characterized in that: described wireless temperature measuring device includes the first temperature measurement component, the second temperature measurement component, the 3rd temperature measurement component, the 4th temperature measurement component, the 5th temperature measurement component, the 6th temperature measurement component, data sink, data management system；First temperature measurement component, the second temperature measurement component, the 3rd temperature measurement component, the 4th temperature measurement component, the 5th temperature measurement component, the 6th temperature measurement component respectively and use wireless connections transmission data between data sink, use wired connection or radio connection transmission data between data sink and data management system.
A kind of wireless temperature measuring device for monitoring breaker contact arm contact temperature the most according to claim 1, is characterized in that: temperature measurement component includes circular grading shield and is positioned at the temperature measurement circuit of circular grading shield；Temperature measurement circuit is arranged on circuit breaker contact arm, electrically connects between circular grading shield and circuit breaker contact arm, makes circular grading shield be in isoelectric level with circuit breaker contact arm.
A kind of wireless temperature measuring device for monitoring breaker contact arm contact temperature the most according to claim 2, is characterized in that: described temperature measurement circuit includes temperature sensor, signal conditioning circuit, microprocessor, wireless transmitter module, wireless receiving module, toggle switch, power circuit；The outfan of temperature sensor is connected with the input of signal conditioning circuit；The outfan of signal conditioning circuit is connected with the A/D end of microprocessor；The input of wireless transmitter module is connected with the I/O mouth of microprocessor；The outfan of wireless receiving module is connected with the I/O mouth of microprocessor；The outfan of toggle switch is connected with the I/O mouth of microprocessor；The outfan of power circuit is connected with the power end of microprocessor；Temperature sensor is fixed on circuit breaker contact arm, measures contact arm temperature.
A kind of wireless temperature measuring device for monitoring breaker contact arm contact temperature the most according to claim 3, is characterized in that, power circuit employing electric field power taking power supply:
Described electric field power taking power supply includes power taking plate, rectification circuit, accumulator, electric power management circuit；Power taking plate is connected with the input of rectification circuit；The outfan of rectification circuit is connected with the input of accumulator；The outfan of accumulator is connected with the input of electric power management circuit；The outfan of electric power management circuit is the outfan of power circuit.
A kind of wireless temperature measuring device for monitoring breaker contact arm contact temperature the most according to claim 1, is characterized in that, power circuit employing CT power taking power supply:
Described CT power taking power supply includes silicon steel core, coil, current-limiting circuit, CT rectification circuit, filter circuit, mu balanced circuit；Coil winding, on silicon steel core, is connected with the input of CT rectification circuit after the outfan concatenation current-limiting circuit of coil；The outfan of CT rectification circuit is connected with the input of filter circuit；The outfan of filter circuit is connected with the input of mu balanced circuit；The outfan of mu balanced circuit is the outfan of power circuit.
A kind of wireless temperature measuring device for monitoring breaker contact arm contact temperature the most according to claim 1, is characterized in that: described data sink includes receiving terminal wireless transmitter module, receiving terminal wireless receiving module, receiving terminal Temperature Humidity Sensor, receiving terminal microprocessor, receiving terminal warning circuit, receiving terminal power circuit, receiving terminal display circuit, receiving terminal key circuit, receiving terminal communication interface circuit；The input of receiving terminal wireless transmitter module is connected with the I/O mouth of receiving terminal microprocessor；The outfan of receiving terminal wireless receiving module is connected with the I/O mouth of receiving terminal microprocessor；The outfan of receiving terminal Temperature Humidity Sensor is connected with the A/D end of receiving terminal microprocessor；The input of receiving terminal warning circuit is connected with the I/O mouth of receiving terminal microprocessor；The input of receiving terminal display circuit is connected with the I/O mouth of receiving terminal microprocessor；The outfan of receiving terminal key circuit is connected with the I/O mouth of receiving terminal microprocessor；Receiving terminal power circuit is connected with the power end of receiving terminal microprocessor；The input of receiving terminal communication interface circuit is connected with the I/O mouth of receiving terminal microprocessor.
A kind of wireless temperature measuring device for monitoring breaker contact arm contact temperature the most according to claim 1, it is characterized in that: described data management system is that the circuit breaker contact arm temperature signal received is added up, analyzes, stored, form all kinds of statistical report form, and decision analysis and failure predication and early warning are provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610330468.6A CN105823574A (en) | 2016-05-18 | 2016-05-18 | Wireless temperature measurement device for monitoring temperature of arm contact of circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610330468.6A CN105823574A (en) | 2016-05-18 | 2016-05-18 | Wireless temperature measurement device for monitoring temperature of arm contact of circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105823574A true CN105823574A (en) | 2016-08-03 |
Family
ID=56530898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610330468.6A Pending CN105823574A (en) | 2016-05-18 | 2016-05-18 | Wireless temperature measurement device for monitoring temperature of arm contact of circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105823574A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107063500A (en) * | 2016-10-20 | 2017-08-18 | 云南电网有限责任公司电力科学研究院 | A kind of memory alloy spring fault detector for being used to detect transmission line of electricity tie point |
| CN108562849A (en) * | 2018-03-07 | 2018-09-21 | Abb瑞士股份有限公司 | Self-powered detection device for switchgear |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080068212A1 (en) * | 2006-08-30 | 2008-03-20 | Boon Hou Tay | Coupling point temperature and current measuring system |
| CN201425522Y (en) * | 2009-05-07 | 2010-03-17 | 浙江国嘉电力科技有限公司 | On-line temperature measuring system for equipotential junctions |
| CN202853762U (en) * | 2012-10-16 | 2013-04-03 | 浙江科润电力设备有限公司 | Suspension electricity acquiring device especially for medium-voltage intelligent wireless temperature measurement of breaker contact arm |
| CN103115690A (en) * | 2013-01-28 | 2013-05-22 | 辽宁巨龙腾飞电气有限公司 | Method of online monitoring for high-voltage switch contact temperature rise |
| CN203132720U (en) * | 2013-01-25 | 2013-08-14 | 辽宁省电力有限公司阜新供电公司 | A temperature rise online monitoring device of a high-voltage device cable connector |
| CN103411692A (en) * | 2013-08-09 | 2013-11-27 | 南京大全自动化科技有限公司 | Temperature measuring device for circuit breaker contact |
| CN204145034U (en) * | 2014-11-06 | 2015-02-04 | 珠海格力电器股份有限公司 | Non-contact charging device and AGV battery charging system |
| US20150377949A1 (en) * | 2014-06-30 | 2015-12-31 | Landis+Gyr, Inc. | Utility Meter with Temperature Sensor |
| CN105425147A (en) * | 2015-12-15 | 2016-03-23 | 江苏德春电力科技有限公司 | High-voltage circuit breaker contact temperature rise and service life online monitoring system |
| CN205642672U (en) * | 2016-05-18 | 2016-10-12 | 云南电网有限责任公司昆明供电局 | A wireless temperature measuring device for $monitoring circuit breaker contact arm contact temperature |
-
2016
- 2016-05-18 CN CN201610330468.6A patent/CN105823574A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080068212A1 (en) * | 2006-08-30 | 2008-03-20 | Boon Hou Tay | Coupling point temperature and current measuring system |
| CN201425522Y (en) * | 2009-05-07 | 2010-03-17 | 浙江国嘉电力科技有限公司 | On-line temperature measuring system for equipotential junctions |
| CN202853762U (en) * | 2012-10-16 | 2013-04-03 | 浙江科润电力设备有限公司 | Suspension electricity acquiring device especially for medium-voltage intelligent wireless temperature measurement of breaker contact arm |
| CN203132720U (en) * | 2013-01-25 | 2013-08-14 | 辽宁省电力有限公司阜新供电公司 | A temperature rise online monitoring device of a high-voltage device cable connector |
| CN103115690A (en) * | 2013-01-28 | 2013-05-22 | 辽宁巨龙腾飞电气有限公司 | Method of online monitoring for high-voltage switch contact temperature rise |
| CN103411692A (en) * | 2013-08-09 | 2013-11-27 | 南京大全自动化科技有限公司 | Temperature measuring device for circuit breaker contact |
| US20150377949A1 (en) * | 2014-06-30 | 2015-12-31 | Landis+Gyr, Inc. | Utility Meter with Temperature Sensor |
| CN204145034U (en) * | 2014-11-06 | 2015-02-04 | 珠海格力电器股份有限公司 | Non-contact charging device and AGV battery charging system |
| CN105425147A (en) * | 2015-12-15 | 2016-03-23 | 江苏德春电力科技有限公司 | High-voltage circuit breaker contact temperature rise and service life online monitoring system |
| CN205642672U (en) * | 2016-05-18 | 2016-10-12 | 云南电网有限责任公司昆明供电局 | A wireless temperature measuring device for $monitoring circuit breaker contact arm contact temperature |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107063500A (en) * | 2016-10-20 | 2017-08-18 | 云南电网有限责任公司电力科学研究院 | A kind of memory alloy spring fault detector for being used to detect transmission line of electricity tie point |
| CN107063500B (en) * | 2016-10-20 | 2023-10-20 | 云南电网有限责任公司电力科学研究院 | Memory alloy spring fault indicator for detecting power transmission line connection point |
| CN108562849A (en) * | 2018-03-07 | 2018-09-21 | Abb瑞士股份有限公司 | Self-powered detection device for switchgear |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102313856B (en) | Intelligent 10kV power line state sensor | |
| CN202454744U (en) | Whole insulation type cable accessory with temperature sensor | |
| CN204241594U (en) | A kind of real-time monitoring system for substation transformer operating condition | |
| CN104535957A (en) | Measuring accuracy comparison device of intelligent substation | |
| CN203132708U (en) | Wireless temperature measurement sensor used for on-line detection of cable termination | |
| CN205642672U (en) | A wireless temperature measuring device for $monitoring circuit breaker contact arm contact temperature | |
| CN204422095U (en) | Switch cabinet contact and busbar tie point temperature rise on-Line Monitor Device and system | |
| CN105823574A (en) | Wireless temperature measurement device for monitoring temperature of arm contact of circuit breaker | |
| CN201569508U (en) | Temperature rise monitoring and analyzing device of high-pressure equipment | |
| CN203149066U (en) | Distributed on-line insulation monitoring device for electrical network operation equipment | |
| CN207379616U (en) | A Closed Safety Switch Temperature Online Monitoring Device | |
| CN205748654U (en) | Transformator real-time monitoring system based on infrared thermal imaging | |
| CN203722077U (en) | An intelligent MNS low voltage switchgear cabinet system | |
| CN103532239B (en) | A kind of operation power equipment on-line teletransmission display and warning device | |
| CN203534711U (en) | Intelligent wireless temperature measuring device of high-voltage vacuum circuit breaker contact | |
| CN202274946U (en) | Multi-point temperature measurement device for middle-high voltage switch cabinet | |
| CN102331309A (en) | On-line monitoring system for high voltage handcart switch cabinet | |
| CN104269038A (en) | A low-tension cable temperature pre-warning system | |
| CN202255652U (en) | Wireless temperature measuring device of high-voltage switch contact | |
| CN101059376A (en) | All-closed combined electric appliance GIS radio device for on-line monitoring temperature | |
| CN205300776U (en) | Online temperature monitoring early warning device of non -contact conductor | |
| CN202869661U (en) | Electric joint temperature measurement apparatus | |
| CN204330159U (en) | A kind of wireless temperature measurement system for monitoring breaker dynamic/static contact temperature | |
| CN203191085U (en) | High voltage equipment temperature monitoring system used for electric power inspection | |
| CN207826260U (en) | Gapless rail temperature movement detection device based on image recognition |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160803 |
|
| WD01 | Invention patent application deemed withdrawn after publication |