CN201413196Y - Wireless aerial power cable contact temperature monitoring system - Google Patents

Wireless aerial power cable contact temperature monitoring system Download PDF

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Publication number
CN201413196Y
CN201413196Y CN2009200267252U CN200920026725U CN201413196Y CN 201413196 Y CN201413196 Y CN 201413196Y CN 2009200267252 U CN2009200267252 U CN 2009200267252U CN 200920026725 U CN200920026725 U CN 200920026725U CN 201413196 Y CN201413196 Y CN 201413196Y
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China
Prior art keywords
wireless
temperature
monitoring
layer
electric power
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Expired - Fee Related
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CN2009200267252U
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Chinese (zh)
Inventor
张顺海
殷炳来
高洪凤
张伟忠
刘昆
刘正堂
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Institute of Automation Shandong Academy of Sciences
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Institute of Automation Shandong Academy of Sciences
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Priority to CN2009200267252U priority Critical patent/CN201413196Y/en
Application granted granted Critical
Publication of CN201413196Y publication Critical patent/CN201413196Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a wireless aerial power cable contact temperature monitoring system. The system, which is a temperature acquisition system with wireless temperature measurement units as main bodies, can remotely monitor on-site real-time data, thus greatly improving the safety of the operation of a grid. The structure of the system is as follows: the system adopts a hierarchical distributed structure, and consists of an acquisition layer, a collection layer and a monitoring layer; the acquisition layer consists of a plurality of wireless temperature measurement units, each of whichis connected with a measured object; the collection layer consists of a plurality of wireless reception management terminals; the monitoring layer consists of a plurality of local monitoring computers, at least one scheduling-end monitoring computer and a database; the wireless reception management terminals process the collected temperature data sent by each corresponding wireless temperature measurement unit, the processed temperature data are transmitted to a communication manager via mobile communication GPRS, the communication manager transmits the temperature data to the corresponding local monitoring computers and the scheduling-end monitoring computer, the local monitoring computers and the scheduling-end monitoring computer manage the data, and corresponding alarm signals are sent out.

Description

Electric power overhead cable contact temperature wireless monitoring system
Technical field
The utility model relates to a kind of electric power overhead cable contact temperature wireless monitoring system.
Background technology
Along with rapid economy development, the demand of electric power is also in continuous increase, people's life now all be unable to do without the demand to electricity all the time, each power failure has all seriously been disturbed people's normal life and work, particularly along with the develop rapidly of science and technology, the popularization and application of the electric equipment in electric automatization equipment in the production and the life, seeming ensure safety the power supply particularly important, all power in each countries and regions, the whole world at present and be used as a permanent problem, also in the middle of constantly some new technology of release are applied to the guarantee power supply in continuous research and exploration ensuring safety.
When electrical network is powered, mainly finishes load to each electric pressure and carry out electric power and carry, and temperature is to investigate an important parameter of primary equipment safe operation that the temperature monitoring of electric power primary equipment is just had urgency by the electric power primary equipment.
The high-tension electricity overground cable is a key equipment of carrying electricity.In electrical network long-time running process, cable contact is because of aging or contact resistance is excessive generates heat, and the temperature of these heating positions can't be monitored in real time, therefore very easily causes accidents such as equipment burnout or power failure suddenly.Ruuning situation by the monitoring contact temperature can prevent effectively that cable from burning out, and guarantees the stable operation of electric power system.Power cable is erected at remote districts more, and antenna height is very high simultaneously, the thermometric of can't manually patrolling, and common thermometry can not be used.
A kind of switch cubicle temperature monitoring system is abroad arranged, laser temperature sensor is placed easy excess temperature point in the switch cubicle, be used to measure temperature, battery is preset in the sensor, for sensor provides power supply; Temperature display is loaded on the switch cubicle door, the temperature of the switch leads joint that is used to show that sensor transmits; Connect laser temperature sensor and temperature display with optical fiber.Optical fiber insulate, and can not reduce electrical distance, satisfies safety requirements, but also has following shortcoming:
(1) performance is unreliable, because the power supply of sensor provides with battery, so in case battery failure, monitoring will be interrupted, and needs switch cubicle to have a power failure and change battery, influences power supply reliability.
(2) fluctuation of service, because adopt optical fiber to be connected between sensor and the temperature display, optical cable is bumped disconnected easily during maintenance.
(3) installation workload is big, needs to transform original switch cubicle.
The domestic temperature measuring equipment that also is useful on switch cubicle internal lead joint, its principle are in institute's measuring point temperature during greater than the temperature set, the spring contact closure of device, report to the police in the enabling signal loop, but can't quantitative measurement temperature accurately, can't the log history data, can not grasp temperature changing trend.
The utility model content
The purpose of this utility model is exactly in order to address the above problem, a kind of electric power overhead cable contact temperature wireless monitoring system is provided, it just can monitor on-the-spot real time data based on the temperature collecting device of wireless temperature measuring device at far-end, has improved the safe operation of electrical network greatly.
For achieving the above object, the utility model adopts following technical scheme:
A kind of electric power overhead cable contact temperature wireless monitoring system, it adopts layered distribution type structure, is made up of acquisition layer, collecting layer and monitor layer; Wherein acquisition layer comprises several wireless temperature measuring devices, and each wireless temperature measuring device is connected with testee; The collecting layer is several wireless receiving office terminals, and each wireless receiving office terminal is by mobile communication GPRS mode and contact manager exchange message; Monitor layer is some local monitoring computers and at least one dispatching terminal monitoring computer and database; Adopt wireless communication mode to be connected between each wireless receiving office terminal and each wireless temperature measuring device; The temperature data that each respective wireless temperature measuring equipment that the wireless receiving office terminal will be collected sends carries out data processing, handle the back by passing to contact manager by mobile communication GPRS mode, contact manager is passed to corresponding local monitoring computer and dispatching terminal monitoring computer by RS485, local monitoring computer and dispatching terminal monitoring computer manage data, send control commands corresponding.
Described wireless temperature measuring device comprises wireless transmit receiver module I, A/D converter, logic interfacing I, power management module I, and temperature sensor is installed on the point for measuring temperature, and the simultaneous temperature sensor is connected with A/D converter; Wireless transmit receiver module I is connected with antenna I, logic interfacing I is connected with programmable storage I, clock chip, ROM (read-only memory) respectively, and external power I then is connected with temperature sensor, power management module I, ROM (read-only memory), clock chip, programmable storage I respectively.
Described wireless receiving office terminal comprises wireless receiving transmitter module II, and wireless receiving transmitter module II is connected with antenna II; Logic interfacing II then is connected with programmable storage II, serial communication interface, address switch respectively, and external power II then is connected with power management module II, serial communication interface and programmable storage II.
Described dispatching terminal monitoring computer is connected with optical communication PCM equipment by optical fiber, and optical communication PCM equipment is connected with contact manager; Contact manager also is connected with local monitoring computer simultaneously.
Described external power I and external power II all adopt at least a in mutual inductor or sun power or the battery.
Described wireless transmit receiver module I and wireless receiving transmitter module II are 433MHz or 355MHz wireless module.
Described serial communication interface comprises point-to-point transmission communication serial port and differential transfer communication serial port.
Described address switch is a digital switch.
The utility model adopts layered distribution type structure, has guaranteed the dirigibility and the functional configuration convenience of system configuration.System in its entirety is divided into three layers of acquisition layers, collecting layer, monitor layer.
Adopt wireless communication mode between acquisition layer and the collecting layer, the collecting layer adopts the communication network winding thread to link to each other with monitor layer.
The temperature of the testee that the wireless temperature measuring device of acquisition layer collects temperature-sensing element sends to the wireless receiving office terminal of collecting layer by the mode of wireless telecommunications, the temperature data that each wireless temperature measuring device that the wireless receiving office terminal will be collected sends carries out data processing, handle the back and pass to contact manager by mobile communication GPRS mode, contact manager is passed to each local monitoring computer of monitor layer by RS-485 mouth and data line, pass to the dispatching terminal monitoring computer through the optical-fibre channel net simultaneously, each monitoring computer manages data by the application software of native system, the record temperature is got over line time and numerical value etc., sends alerting signal.
Wireless receiving office terminal maximum can be managed 500 wireless temperature measuring devices, need use two wireless receiving office terminals when wireless temperature measuring device quantity surpasses 500, this moment, each computing machine of monitor layer need distantly will be delivered to by a communications manager in two wireless receiving office terminals on whole wireless temperature measuring device information.
The beneficial effects of the utility model:
1. can be to power equipment, particularly the temperature of high voltage overhead cable connection point is carried out real-time overall monitor, and when the running temperature of equipment surpasses default alarm temperature value, system will warn automatically, so that in time take measures, guarantee the power grid security reliability service.
2. there is not the error that artificial thermometric causes in native system, and the temperature-sensing element of its unlimited temperature measuring equipment is close to the surface of tested contact, precision height, good reliability.
3. native system is simple in structure, and is easy to maintenance, intelligent degree height.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the wireless temperature measuring device structural representation;
Fig. 3 is a wireless receiving office terminal structural representation.
Wherein, 1. acquisition layer, 2. collecting layer, 3. monitor layer, 4. wireless temperature measuring device, 401. wireless transmit receiver module I, 402.A/D converter, 403. power management module I, 404. logic interfacing I, 405. antenna I, 406. temperature sensors, 407. external power I, 408. ROM (read-only memory), 409. clock chips, 410. programmable storage I, 411. point for measuring temperature, 5. wireless receiving office terminal, 501. wireless receiving transmitter module II, 502. power management module II, 503. logic interfacing II, 504. antenna II, 505. external power II, 506. address switch, 507. point-to-point transmission communication serial ports, 508. differential transfer communication serial ports, 509. programmable storage II, 6. contact manager, 7. optical communication PCM equipment, 8. local monitoring computer, 9. dispatching terminal monitoring computer, 10. database.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing and embodiment.
Among Fig. 1, the utility model adopts layered distribution type structure, is made up of acquisition layer 1, collecting layer 2 and monitor layer 3; Wherein acquisition layer 1 comprises several wireless temperature measuring devices 4, and each wireless temperature measuring device 4 is connected with testee; Collecting layer 2 is several wireless receiving office terminals 5, and each wireless receiving office terminal 5 is connected with contact manager 6; Monitor layer 3 is some local monitoring computers 8 and at least one dispatching terminal monitoring computer 9 and database 10; Each wireless receiving office terminal 5 adopts wireless communication mode to be connected (frequency is 433MHz or 355MHz) with 4 of each wireless temperature measuring devices; The temperature data that each respective wireless temperature measuring equipment 4 that wireless receiving office terminal 5 will be collected sends carries out data processing, pass to contact manager 6 by mobile communication GPRS mode, pass to corresponding local monitoring computer 8 and dispatching terminal monitoring computer 9 by contact manager 6, local monitoring computer 8 and 9 pairs of data of dispatching terminal monitoring computer manage, and send control commands corresponding.Dispatching terminal monitoring computer 9 is connected with optical communication PCM equipment 7 by optical fiber, and optical communication PCM equipment 7 is connected with contact manager 6; Contact manager 6 also is connected with local monitoring computer 8 simultaneously.
Among Fig. 2, wireless temperature measuring device 4 comprises wireless transmit receiver module I401, A/D converter 402, logic interfacing I404, power management module I403, and temperature sensor 406 is installed on the point for measuring temperature 411, and simultaneous temperature sensor 406 is connected with A/D converter 402; Wireless transmit receiver module I401 is connected with antenna I405, logic interfacing I404 is connected with programmable storage I410, clock chip 409, ROM (read-only memory) 408 respectively, and external power I407 then is connected with temperature sensor 406, power management module I403, ROM (read-only memory) 408, clock chip 409, programmable storage I404 respectively.
Among Fig. 3, wireless receiving office terminal 5 comprises wireless receiving transmitter module II501, and wireless receiving transmitter module II501 is connected with antenna II504; Logic interfacing II503 then is connected with programmable storage II509, serial communication interface, address switch 506 respectively, and external power II505 then is connected with power management module II502, serial communication interface and programmable storage II509.Serial communication interface comprises point-to-point transmission communication serial port 507 and differential transfer communication serial port 508.Address switch 506 is a digital switch.
External power I407 and external power II505 can be the mode that mutual inductor/sun power and battery are united power supply, and mutual inductor/sun power is system's power supply on one side, charges the battery again simultaneously; It perhaps is the mutual inductor power supply mode.
Wireless transmit receiver module I401 and wireless receiving transmitter module II501 are the 433MHz wireless module.
Programmable storage I404 and programmable storage II509 adopt the 25AA1024 chip; Clock chip 409 adopts DS1302; ROM (read-only memory) 408 adopts the AT24C256 chip; Antenna I405 and antenna II504 select single-ended 50 Europe antennas for use; Temperature sensor is selected PT1000 for use.
Whole acquisition terminal is used by above technology, has solved temperature acquisition, temperature data processing, temperature data wireless transmission or the like technical barrier, has realized the temperature of electric power primary equipment key position is monitored in real time.
The utility model is compared with prior art:
(1) existing high-voltage contact temperature detection generally adopts indirect method (as some the import graspable temperature measurer) precision of measuring of infrared ray to be subject to the influence of measuring point environment and surface state, and measured value and actual value error are bigger.And can only measure the place that to look at straight, and want manually-operated.This temperature monitoring system adopts the method for directly measuring, and the accuracy height is not subjected to such environmental effects, temperature sensor uses the temperature sensor of national standard, and it is high to have stability, and interchangeability is good, (20-300 ℃) has good characteristics such as consistance in whole working range.The detecting device point for measuring temperature can be selected arbitrarily, and is not subjected to the restriction that whether can " look at straight ", is more suitable for the switch cubicle in novel closed-type, does not need manually-operated, accomplishes on-line automatic measurement.
(2) data transmission is taked wireless mode, has not only solved the high pressure isolating problem but also guaranteed that data are undistorted, is not subjected to highfield, influence of magnetic field.Mobile communication GPRS mode is adopted in the teletransmission of field data, is not subjected to the influence of environment, need not set up communication cable.
(3) in order to guarantee the high pressure isolation, adopt the mode of major loop working current induction to obtain at the sensors work power supply of high-pressure side work, owing to can both guarantee the detecting device operate as normal when having adopted unique power circuit to make in the major loop working current is on a large scale change.
(4) all real-time being reflected on the host computer monitoring of software of the value of all temperature monitoring points realize the real-time monitoring to temperature.If temperature is too high, monitoring system can be reported to the police with different modes simultaneously, reminds the user in time to handle hidden danger, fault is eliminated in bud, thereby the safe and reliable operation of support equipment provides strong guarantee for enterprise produces.
The operation of power networks state network monitoring that can form in the certain area coverage by the networking operation of each workstation realizes:
(a) can be accurate to the running temperature state of each contact in a little the guarded region in real time.
(b) state of temperature of electrical network pole line contact in the overall monitor zone for the electric power netting safe running scheduling provides reliable basis, prevents trouble before it happens accident.
(c) monitor the numerical value of each monitoring point temperature in real time, can long preservation pole line and operation of power networks data, provide scientific basis to electrical network overall work state analysis and other management.
Performance characteristic:
Wireless temperature measuring device can be realized temperature (20 ℃~300 ℃) collection of wide region
Wireless temperature measuring device adapts to rated current a 5~4000A.
The wireless transmit receive mode is adopted in communication, effectively improves the security performance of system, and communication distance 80m, wireless temperature measuring device can satisfy the installation needs of each test point.
Response speed is fast, fault warning time<1s.
Perfect event message is handled, and can carry out literal and phonic warning, and can preserve data.
Friendly man-machine interface, Chinese character show, print; Can inquire about, delete historical data and the curve plotting operation.
The background communication mode is flexible, is furnished with the RS485 communication interface.
500 wireless temperature measuring devices effectively can managed in the wireless receiving scope simultaneously in the wireless receiving office terminal.
Easy for installation, maintenance is little, simple and practical, simple to operate.
Wireless temperature measuring device
1. the thermometric mode is direct contact thermography; The temperature sensing device of wireless temperature measuring device directly closely contacts with the device of monitoring point
2. the temperature data transmission mode is a wireless transmission; The temperature data of wireless temperature measuring device is to send to receiving trap (wireless receiving office terminal) by wireless mode
3. wireless temperature measuring device temperature-measuring range-20~300 ℃;
Temperature sampling precision ± 3 ℃
4. wireless temperature measuring device can be placed in any assigned address, and installs firmly, can not become flexible, damage because of operate machine vibrations or high temperature;
5. the mounting means of wireless temperature measuring device does not influence normal service work, simultaneously the safe insulation spacing is not impacted;
6. the continuous working of wireless temperature measuring device energy is at least 5 years, Maintenance free.
7. wireless temperature measuring device radio transmission range to 80 meter; (wireless temperature measuring device is positioned in the closed metal high-tension switch cabinet, and communication distance 20m can guarantee that signal correctly transmits)
8. the low power devices of wireless temperature measuring device wireless transmission employing does not have any impact to other radio communication devices in the course of the work;
9. the wireless temperature measuring device temperature acquisition time interval is adjustable.

Claims (7)

1. an electric power overhead cable contact temperature wireless monitoring system is characterized in that, it adopts layered distribution type structure, is made up of acquisition layer, collecting layer and monitor layer; Wherein acquisition layer comprises several wireless temperature measuring devices, and each wireless temperature measuring device is connected with testee; The collecting layer is several wireless receiving office terminals, and each wireless receiving office terminal is connected with contact manager by mobile communication GPRS mode; Monitor layer is some local monitoring computers and at least one dispatching terminal monitoring computer and database; Adopt wireless communication mode to be connected between each wireless receiving office terminal and each wireless temperature measuring device; The temperature data that each respective wireless temperature measuring equipment that the wireless receiving office terminal will be collected sends carries out data processing, handle the back and pass to contact manager by mobile communication GPRS mode, contact manager is passed to corresponding local monitoring computer and dispatching terminal monitoring computer by computer network, local monitoring computer and dispatching terminal monitoring computer manage data, send corresponding warning message.
2. electric power overhead cable contact temperature wireless monitoring system as claimed in claim 1, it is characterized in that, described wireless temperature measuring device comprises wireless transmit receiver module I, A/D converter, logic interfacing I, power management module I, temperature sensor is installed on the point for measuring temperature, and the simultaneous temperature sensor is connected with A/D converter; Wireless transmit receiver module I is connected with antenna I, logic interfacing I is connected with programmable storage I, clock chip, ROM (read-only memory) respectively, and external power I then is connected with temperature sensor, power management module I, ROM (read-only memory), clock chip, programmable storage I respectively.
3. electric power overhead cable contact temperature wireless monitoring system as claimed in claim 1 is characterized in that described wireless receiving office terminal comprises wireless receiving transmitter module II, and wireless receiving transmitter module II is connected with antenna II; Logic interfacing II then is connected with programmable storage II, serial communication interface, address switch respectively, and external power II then is connected with power management module II, serial communication interface and programmable storage II.
4. electric power overhead cable contact temperature wireless monitoring system as claimed in claim 1 is characterized in that, described dispatching terminal monitoring computer optical fiber is connected with optical communication PCM equipment, and optical communication PCM equipment is connected with contact manager; Contact manager also is connected with local monitoring computer simultaneously.
5. as claim 2 or 3 described electric power overhead cable contact temperature wireless monitoring systems, it is characterized in that described external power I and external power II all adopt mutual inductor or powered battery.
6. as claim 2 or 3 described electric power overhead cable contact temperature wireless monitoring systems, it is characterized in that described wireless transmit receiver module I and wireless receiving transmitter module II are 433MHz or 355MHz wireless module.
7. electric power overhead cable contact temperature wireless monitoring system as claimed in claim 3 is characterized in that described serial communication interface comprises point-to-point transmission communication serial port and differential transfer communication serial port.
CN2009200267252U 2009-06-02 2009-06-02 Wireless aerial power cable contact temperature monitoring system Expired - Fee Related CN201413196Y (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102298824A (en) * 2010-06-24 2011-12-28 陈家斌 Remote overtemperature alarm for power cable head
CN102620837A (en) * 2012-04-17 2012-08-01 中国电子科技集团公司第三十八研究所 Distribution type infrared online temperature measurement system for electric terminals of high-voltage equipment
CN103234645A (en) * 2013-03-25 2013-08-07 国家电网公司 On-line monitoring system and monitoring method for distributed cable terminals
CN104853582A (en) * 2015-06-04 2015-08-19 深圳博英特科技有限公司 Welding equipment remote monitoring system
CN105702008A (en) * 2016-03-28 2016-06-22 尚鹏 Wireless environment monitoring network and system
CN106097687A (en) * 2016-08-09 2016-11-09 国网江苏省电力公司徐州供电公司 Cable run multi-point temp wireless monitor system based on ZigBee

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102298824A (en) * 2010-06-24 2011-12-28 陈家斌 Remote overtemperature alarm for power cable head
CN102298824B (en) * 2010-06-24 2013-04-03 陈家斌 Remote overtemperature alarm for power cable head
CN102620837A (en) * 2012-04-17 2012-08-01 中国电子科技集团公司第三十八研究所 Distribution type infrared online temperature measurement system for electric terminals of high-voltage equipment
CN103234645A (en) * 2013-03-25 2013-08-07 国家电网公司 On-line monitoring system and monitoring method for distributed cable terminals
CN104853582A (en) * 2015-06-04 2015-08-19 深圳博英特科技有限公司 Welding equipment remote monitoring system
CN105702008A (en) * 2016-03-28 2016-06-22 尚鹏 Wireless environment monitoring network and system
CN106097687A (en) * 2016-08-09 2016-11-09 国网江苏省电力公司徐州供电公司 Cable run multi-point temp wireless monitor system based on ZigBee

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C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20100224

Termination date: 20120602