CN108896194A - Novel electrical contact temperature on-Line Monitor Device based on wireless sensor network - Google Patents

Novel electrical contact temperature on-Line Monitor Device based on wireless sensor network Download PDF

Info

Publication number
CN108896194A
CN108896194A CN201810886088.XA CN201810886088A CN108896194A CN 108896194 A CN108896194 A CN 108896194A CN 201810886088 A CN201810886088 A CN 201810886088A CN 108896194 A CN108896194 A CN 108896194A
Authority
CN
China
Prior art keywords
temperature
wireless
module
main control
field terminal
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
Application number
CN201810886088.XA
Other languages
Chinese (zh)
Inventor
严文杰
吴剑侠
刘文建
茹晶晶
吴志杭
林宇峰
陆奇观
康振兴
毛源
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Yuyao Power Supply Co Ltd
State Grid Corp of China SGCC
Ningbo Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
Original Assignee
Zhejiang Yuyao Power Supply Co Ltd
State Grid Corp of China SGCC
Ningbo Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Zhejiang Yuyao Power Supply Co Ltd, State Grid Corp of China SGCC, Ningbo Power Supply Co of State Grid Zhejiang Electric Power Co Ltd filed Critical Zhejiang Yuyao Power Supply Co Ltd
Priority to CN201810886088.XA priority Critical patent/CN108896194A/en
Publication of CN108896194A publication Critical patent/CN108896194A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01KMEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K1/00Details of thermometers not specially adapted for particular types of thermometer
    • G01K1/02Means for indicating or recording specially adapted for thermometers
    • G01K1/024Means for indicating or recording specially adapted for thermometers for remote indication
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01KMEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K1/00Details of thermometers not specially adapted for particular types of thermometer
    • G01K1/02Means for indicating or recording specially adapted for thermometers
    • G01K1/026Means for indicating or recording specially adapted for thermometers arrangements for monitoring a plurality of temperatures, e.g. by multiplexing
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00Programme-control systems
    • G05B19/02Programme-control systems electric
    • G05B19/04Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/042Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
    • G05B19/0428Safety, monitoring
    • GPHYSICS
    • G08SIGNALLING
    • G08CTRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C17/00Arrangements for transmitting signals characterised by the use of a wireless electrical link
    • G08C17/02Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00Program-control systems
    • G05B2219/20Pc systems
    • G05B2219/26Pc applications
    • G05B2219/2612Data acquisition interface

Abstract

The present invention relates to the novel electrical contact temperature on-Line Monitor Devices based on wireless sensor network, including wireless temperature sensing unit, including temperature sensor, wireless launcher and main control chip;Field terminal unit is mounted on measure field, is wirelessly connected with multiple wireless temperature sensing units at scene, field terminal unit for managing multiple wireless temperature sensing units concentratedly at the scene;Remote monitoring unit is mounted in Substation control room, and networking is connect between all field terminal units, for Centralized Monitoring and management field terminal unit.The on-line monitoring system realizes the two-stage on-line monitoring of the long-range and live combination to monitoring system in such a way that software and hardware combines running, long-range on-line monitoring saves the distribution of human resources, realize the long-range management of all standing, the on-line checking at scene uses wireless mode, save wiring operations, and easy for installation, strong antijamming capability.

Description

Novel electrical contact temperature on-Line Monitor Device based on wireless sensor network
Technical field
The present invention relates to power equipment control field, electrically connect more particularly, to a kind of novel based on wireless sensor network Point temperature on-line monitoring device.
Background technique
The social economy of electric system runs artery, and operating status directly determines the safety and benefit of social production, and one Denier, which breaks down, just necessarily brings huge economic loss.Various electrical equipment malfunctions are generated heat with it and are had in transmission line of electricity according to statistics Extremely close connection, in numerous power outages, because interruption maintenance caused by equipment hot-spot occurs often, such as contact Deng crucial connecting portion because of aging or the excessive fever of contact resistance, and deteriorate adjacent insulating element performance, or even breakdown two It causes the accident, it is therefore, extremely important to the temperature monitoring of running equipment key position.
It is well known that power equipment accident is not mostly burst, often or fastly or slowly there is a change procedure, electrical member Component gradually appears loosening, rupture, corrosion etc., and contact resistance is caused to increase, and electric component temperature is caused to increase, and it is different heat occur Often occur as.
Currently, in traditional converting station electric power apparatus overheat fault detection, using the side of man-hour manually hand-held thermal imaging system inspection Formula, once discovering device overheating defect, fixed according to state's network planning, need to send someone to send a car to on-site test data of generating heat.There is huge Big human and material resources waste.And due to current on-line monitoring, the online prison of real-time all standing can't be reached It surveys, cannot find potential faults completely;Real time monitoring is carried out to substation equipment using fixed thermal infrared imager to be able to solve Partial thermal fault problem, but since the device is complicated in substation, there can be peace using fixed thermal infrared imager monitoring failure Dress is complicated, big, at high cost, equipment room affected by environment has the problems such as mutually blocking;Optical fiber temperature-measurement needs to be routed, it is not easy to pacify Dress, scalability are bad.
Summary of the invention
The technical problem to be solved by the present invention is to the prior art there are aiming at the problem that provide it is convenient effectively, save people The novel electrical contact temperature on-Line Monitor Device based on wireless sensor network of power resource.
The present invention solves technical solution used by above-mentioned technical problem, and novel based on wireless sensor network electrically connects Point temperature on-line monitoring device, it is characterised in that:Including
Wireless temperature sensing unit, including temperature sensor, wireless launcher and main control chip, the temperature sensor Probe connect with contact to be measured, main control chip is electrically connected with the feedback end of wireless launcher and temperature sensor, main Control chip-controlled temperature sensor measures temperature is simultaneously wirelessly transferred away by the data that wireless launcher measures;
Field terminal unit is mounted on measure field, is wirelessly connected with multiple wireless temperature sensing units at scene, including The corresponding wireless receiving module for being stored with multiple wireless launcher launch codes, the field terminal unit for concentrating at the scene Manage multiple wireless temperature sensing units;
Remote monitoring unit is mounted in Substation control room, and networking is connect between all field terminal units, is used for Centralized Monitoring and management field terminal unit.
Further, the field terminal unit is connected by the way that 485 bus interface are isolated with remote monitoring unit.
Further, the field terminal unit include the first display module, the first alarm module, the first setup module and First main control module, first main control module and the first display module, the first alarm module, the first setup module and wireless Receiving module electrical connection, the first main control module control wireless receiving module receive the temperature sent from wireless temperature sensing unit Data, and received data are subjected to classification storage, first display module is used for the data that real-time display receives, described First setup module alert range and scene inquiry data that temperature parameter is arranged on site, the first main control module is according to reception To data be compared with the temperature parameter that the first module is arranged, when temperature exceed setup parameter range when, pass through first Alarm module indicating alarm.
Further, the remote monitoring unit is the Temperature Monitoring of HV Apparatus real-time online prison being mounted on mainframe computer Survey administrative analysis software, Integrated Simulation data storages, display, alarm, scanning keyboard input, historical query, printing reports Function;After mainframe computer and field terminal unit carry out networking success, connect by monitoring administrative analysis software control on-line It receives the temperature data of field terminal unit, and classification storage is in computer, while being shown by computer screen, passed through The input of the software scans computer key passes through the first alarm module when detecting that temperature exceeds the range of setup parameter Suggestion voice alarm, and SMS alarm is sent by the software and is prompted to related personnel.
Further, temperature sensor uses digital temperature sensor TMP35 in the wireless temperature sensing unit, and divides Not Cai Ji on contact three-phase three temperature datas;The wireless launcher uses integrated chip CC1020, the master control core Piece uses single-chip microcontroller MEGA48.
Further, the first main control module in the field terminal unit uses chip STM32F103V8T6, the nothing Line receiving module uses MC52i.
Further, the temperature sensor continues to measure beyond after setup parameter, interrupting docking point in temperature.
Further, when first main control module detects that the first setup module has input, the first display module according to The input of first setup module shows corresponding parameter interface, according to the corresponding data of input inquiry.
Compared with prior art, beneficial effects of the present invention are as follows:The on-line monitoring system is combined using software and hardware The mode of running realizes the two-stage on-line monitoring of the long-range and live combination to monitoring system, and long-range on-line monitoring saves people The distribution of power resource realizes the long-range management of all standing, and live on-line checking uses wireless mode, saves wiring behaviour Make, and easy for installation, strong antijamming capability.
Detailed description of the invention
Fig. 1 is that the present invention is based on the structure of block diagram of the novel electrical contact temperature on-Line Monitor Device of wireless sensor network to show It is intended to.
Fig. 2 is the structure of block diagram schematic diagram of wireless temperature sensing unit in Fig. 1.
Fig. 3 is the structure of block diagram schematic diagram of field terminal unit in Fig. 1.
Specific embodiment
The present invention will be described in further detail below with reference to the embodiments of the drawings.
As shown in Figure 1 to Figure 3, the novel electrical contact temperature on-Line Monitor Device based on wireless sensor network, including:
Wireless temperature sensing unit 100, including temperature sensor 110, wireless launcher 120 and main control chip 130, temperature The probe of degree sensor 110 is connect with contact to be measured, main control chip 130 and wireless launcher 120 and temperature sensor 110 feedback end electrical connection, main control chip 130 control temperature sensor 110 and measure temperature and surveyed by wireless launcher 120 The data obtained are wirelessly transferred away;
Field terminal unit 200, is mounted on measure field, wirelessly connects with multiple wireless temperature sensing units 100 at scene It connects, further includes the first display mould including the corresponding wireless receiving module 210 for being stored with multiple 120 launch codes of wireless launcher Block 220, the first alarm module 230, the first setup module 240 and the first main control module 250, the first main control module 250 and first Display module 220, the first alarm module 230, the first setup module 240 and wireless receiving module 210 are electrically connected, scene prison Control unit 200 for managing multiple wireless temperature sensing units 100 concentratedly at the scene.
In the present embodiment, temperature sensor 110 uses digital temperature sensor TMP35, and acquires three-phase on contact respectively Three temperature datas, digital temperature sensor TMP35 have operating voltage is low, precision is high, low in energy consumption, the wide spy of measurement range Point;Wireless launcher 120 uses integrated chip CC1020, integrated chip CC1020 to emit using micropower, emission maximum function Rate 10Mw is believed without applying for frequency point, carrier frequency 433MHz, high anti-jamming capacity and low error rate using efficient forward error correction Coding techniques is ceased, the ability of the anti-bursty interference of data is improved, adapts to any standard or non-standard User Agreement;Master control core Piece 130 uses single-chip microcontroller MEGA48, and MEGA48 is a kind of monolithic machine of low-power consumption, it is the AVR RISC knot based on enhancing 8 CMOS microcontrollers of low-power consumption of structure, due to its advanced instruction set and single clock cycle time for each instruction, The data throughput of MEGA48 is up to 16MIPS, avoids contradiction of the system between power consumption and processing speed, lowest power consumption is only 0.5uA。
In the present embodiment, field terminal unit is wireless temperature monitoring instrument, is typically mounted at outside high-tension switch cabinet body, adopts With LCD display displaying scene monitoring temperature, corresponding first display module 220 of LCD display, corresponding first setup module 240 Key is equipped on wireless temperature monitoring instrument, corresponding first alarm module 230 is equipped with voice guard.
First main control module 250 uses chip STM32F103V8T6, and collection high-performance, is applied to one at low-power consumption in real time The requirement of built-in field;Wireless receiving module 210 uses MC52i, has permanent on-line joining process, fast data store and faster Speed of download.
First main control module 250 control wireless receiving module 250 receives the temperature sent from wireless temperature sensing unit 100 Degree evidence, and received data are subjected to classification storage, the first display module 220 is used for the data that real-time display receives, the One setup module 240 alert range and scene inquiry data that temperature parameter is set on site, 250 basis of the first main control module The data received are compared with the temperature parameter that the first setup module 240 inputs, when temperature exceeds the range of setup parameter When, pass through 230 indicating alarm of the first alarm module.
Above-mentioned remote monitoring unit 300, is mounted in Substation control room, the group between all field terminal units 200 Net connection, for Centralized Monitoring and management field terminal unit 200, field terminal unit 200 by isolation 485 bus interface with Remote monitoring unit 300 is connected, and receives the data that field terminal unit 200 uploads, and press power system communication Standards Code, such as 101 specification agreement of electric system, transfers data to the remote monitoring unit 300 in substation.
Above-mentioned remote monitoring unit 300 is equipped with Temperature Monitoring of HV Apparatus real time on-line monitoring on the computer of monitoring system Administrative analysis software, which, which is able to achieve data storage, data shows, alarms, scans keyboard the functions such as inputs, when computer and After field terminal unit 200 is by isolation 485 bus networkings success, scene is received by on-line monitoring administrative analysis software control The temperature data of monitoring unit 200, and classification storage is in computer, while being shown by computer screen, by this The input of software scans computer key is mentioned when detecting that temperature exceeds the range of setup parameter by the first alarm module Show voice alarm, and SMS alarm is sent by the software and is prompted to related personnel, effectively operations staff can be helped to monitor With the temperature variations of analysis comparison high-tension apparatus monitoring point, prediction in time is out of order the position of generation, to guarantee high pressure The safe operation of equipment.
Above-mentioned temperature sensor 110 continues to measure beyond after setup parameter, interrupting docking point in temperature;First master control mould When block 250 detects that the first setup module 240 has input, the first display module 230 is aobvious according to the input of the first setup module 240 Show corresponding parameter interface, according to the corresponding data of input inquiry, and interrupts data receiver simultaneously.
The on-line monitoring system of the present embodiment is realized in such a way that software and hardware combines running to the remote of monitoring system The two-stage on-line monitoring that journey and scene combine, long-range on-line monitoring save the distribution of human resources, realize all standing Long-range management, live on-line checking use wireless mode, save wiring operations, and easy for installation, strong antijamming capability.
The foregoing is merely the preferred embodiment of the present invention, it is noted that for those of ordinary skills, Under the premise of not departing from the principle of the present invention, a variety of remodeling or improvement can be carried out to the present invention, these are regarded as the present invention Protection scope within.

Claims (8)

1. the novel electrical contact temperature on-Line Monitor Device based on wireless sensor network, it is characterised in that:Including
Wireless temperature sensing unit (100), including temperature sensor (110), wireless launcher (120) and main control chip (130), the probe of the temperature sensor (110) is connect with contact to be measured, main control chip (130) and wireless launcher (120) temperature sensor (110) are controlled and measure temperature with the electrical connection of the feedback end of temperature sensor (110), main control chip (130) And it is wirelessly transferred away by the data that wireless launcher (120) measure;
Field terminal unit (200), is mounted on measure field, wirelessly connects with multiple wireless temperature sensing units (100) at scene It connects, including the corresponding wireless receiving module (210) for being stored with multiple wireless launchers (120) launch code, the on-site supervision Unit (200) for managing multiple wireless temperature sensing units (100) concentratedly at the scene;
Remote monitoring unit (300), is mounted in Substation control room, and networking connects between all field terminal units (200) It connects, for Centralized Monitoring and management field terminal unit (200).
2. the novel electrical contact temperature on-Line Monitor Device based on wireless sensor network as described in claim 1, feature It is:The field terminal unit (200) is connected by the way that 485 bus interface are isolated with remote monitoring unit (300).
3. the novel electrical contact temperature on-Line Monitor Device based on wireless sensor network as described in claim 1, feature It is:The field terminal unit (200) includes the first display module (220), the first alarm module (230), the first setting mould Block (240) and the first main control module (250), first main control module (250) and the first display module (220), the first alarm Module (230), the first setup module (240) and wireless receiving module (210) electrical connection, the first main control module (250) control Wireless receiving module (210) receive from wireless temperature sensing unit (100) send temperature data, and by received data into Row classification storage, first display module (220) are used for the data that real-time display receives, first setup module (240) alert range that temperature parameter is set on site and scene inquiry data are used, the first main control module (250) basis receives Data the temperature parameter of (240) be set with the first module be compared, when temperature exceeds the range of setup parameter, by the One alarm module (230) indicating alarm.
4. the novel electrical contact temperature on-Line Monitor Device based on wireless sensor network as described in claim 1, feature It is:The remote monitoring unit (300) is the Temperature Monitoring of HV Apparatus real time on-line monitoring management being mounted on mainframe computer Analyze software, Integrated Simulation data storages, display, alarm, scanning keyboard input, historical query, printing reports function;When After mainframe computer and field terminal unit carry out networking success, scene prison is received by on-line monitoring administrative analysis software control It controls the temperature data of unit, and classification storage is in computer, while being shown by computer screen, swept by the software The input for retouching computer key is prompted when detecting that temperature exceeds the range of setup parameter by the first alarm module (230) Voice alarm, and SMS alarm is sent by the software and is prompted to related personnel.
5. as described in claim 1/novel electrical contact temperature on-Line Monitor Device based on wireless sensor network, feature It is:Temperature sensor (110) uses digital temperature sensor TMP35 in the wireless temperature sensing unit (100), and respectively Acquire three temperature datas of three-phase on contact;The wireless launcher (120) uses integrated chip CC1020, the master control Chip (130) uses single-chip microcontroller MEGA48.
6. the novel electrical contact temperature on-Line Monitor Device based on wireless sensor network as described in claim 1, feature It is:The first main control module (250) in the field terminal unit (200) uses chip STM32F103V8T6, described wireless Receiving module (210) uses MC52i.
7. the novel electrical contact temperature on-Line Monitor Device based on wireless sensor network as described in claim 1, feature It is:The temperature sensor (110) continues to measure beyond after setup parameter, interrupting docking point in temperature.
8. the novel electrical contact temperature on-Line Monitor Device based on wireless sensor network as claimed in claim 3, feature It is:When first main control module (250) detects that the first setup module (240) has input, the first display module (230) root Corresponding parameter interface is shown according to the input of the first setup module (240), according to the corresponding data of input inquiry.
CN201810886088.XA 2018-08-06 2018-08-06 Novel electrical contact temperature on-Line Monitor Device based on wireless sensor network Pending CN108896194A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810886088.XA CN108896194A (en) 2018-08-06 2018-08-06 Novel electrical contact temperature on-Line Monitor Device based on wireless sensor network

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810886088.XA CN108896194A (en) 2018-08-06 2018-08-06 Novel electrical contact temperature on-Line Monitor Device based on wireless sensor network

Publications (1)

Publication Number Publication Date
CN108896194A true CN108896194A (en) 2018-11-27

Family

ID=64353185

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810886088.XA Pending CN108896194A (en) 2018-08-06 2018-08-06 Novel electrical contact temperature on-Line Monitor Device based on wireless sensor network

Country Status (1)

Country Link
CN (1) CN108896194A (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100932187B1 (en) * 2008-10-31 2009-12-16 주식회사 아이파워 Apparatus and method for monitering error of distributing board by detecting a partial discharge of high-voltage electicity furniture
CN101782438A (en) * 2009-01-20 2010-07-21 鞍山市融庭科技开发有限公司 Wireless temperature monitoring system device of overheating of electrical device
CN103237052A (en) * 2013-03-26 2013-08-07 国家电网公司 Wireless temperature measuring system for online substation monitoring
CN103398741A (en) * 2013-07-31 2013-11-20 成都电业局双流供电局 Wireless transmission-based power transmission line on-line monitoring system
KR20150107932A (en) * 2014-03-13 2015-09-24 주식회사 휘성 Apparatus for wireless temperature detection of high voltage power utilities
CN204854975U (en) * 2015-06-02 2015-12-09 大唐陕县风力发电有限责任公司 Cubical switchboard temperature on -line monitoring system
CN208653658U (en) * 2018-08-06 2019-03-26 国网浙江余姚市供电有限公司 Novel electrical contact temperature on-Line Monitor Device based on wireless sensor network

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100932187B1 (en) * 2008-10-31 2009-12-16 주식회사 아이파워 Apparatus and method for monitering error of distributing board by detecting a partial discharge of high-voltage electicity furniture
CN101782438A (en) * 2009-01-20 2010-07-21 鞍山市融庭科技开发有限公司 Wireless temperature monitoring system device of overheating of electrical device
CN103237052A (en) * 2013-03-26 2013-08-07 国家电网公司 Wireless temperature measuring system for online substation monitoring
CN103398741A (en) * 2013-07-31 2013-11-20 成都电业局双流供电局 Wireless transmission-based power transmission line on-line monitoring system
KR20150107932A (en) * 2014-03-13 2015-09-24 주식회사 휘성 Apparatus for wireless temperature detection of high voltage power utilities
CN204854975U (en) * 2015-06-02 2015-12-09 大唐陕县风力发电有限责任公司 Cubical switchboard temperature on -line monitoring system
CN208653658U (en) * 2018-08-06 2019-03-26 国网浙江余姚市供电有限公司 Novel electrical contact temperature on-Line Monitor Device based on wireless sensor network

Similar Documents

Publication Publication Date Title
CN201532262U (en) High-voltage switch contact and bus on-line temperature measuring device
CN101055209A (en) Switch cabinet contact temperature monitoring and alarming system
CN104734362A (en) Photovoltaic inverter health status monitoring and alarm system
CN107483570A (en) A kind of cable status on-line monitoring communication system based on fiber optic network
CN109540328A (en) Intelligent radio temp measuring system based on passive sensing technology
CN107171444A (en) A kind of real-time monitoring system of low-voltage distribution cabinet
CN106197672A (en) A kind of transformator method of real-time based on infrared thermal imaging
CN103336221A (en) Power cable fault detection system
CN111308239B (en) Wireless monitoring system for GIS state online monitoring
CN103237052A (en) Wireless temperature measuring system for online substation monitoring
CN108040236A (en) A kind of household monitoring system based on cloud computing
CN203984091U (en) High-voltage switch gear infrared thermal imaging on-line monitoring integrated treatment unit
CN207530622U (en) A kind of transformer system for remote monitoring and prewarning
CN208653658U (en) Novel electrical contact temperature on-Line Monitor Device based on wireless sensor network
CN104298279A (en) Transformer substation intelligent remote temperature control system based on infrared identification and passive sensing technology
CN106352916A (en) Switch cabinet temperature online detection device
CN104569641A (en) Intelligent switch cabinet monitoring instrument
CN107340468A (en) A kind of high voltage isolator detecting system
CN204188718U (en) A kind of intelligent monitor for switchgear
CN103812210A (en) Intelligent monitoring system for alternating current-direct current uninterruptible power supply system
CN205622318U (en) Power consumption monitoring system and distribution network
CN203151559U (en) Wireless temperature measurement system for on-line monitoring of transformer substation
CN108896194A (en) Novel electrical contact temperature on-Line Monitor Device based on wireless sensor network
CN205304402U (en) But location is patrolled and examined to safety of quick charge system for electric power inspection at night
CN211147878U (en) Wireless temperature measuring device for cable connector of switch cabinet

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