CN102890856A - Junction temperature sensing device for transmission equipment - Google Patents
Junction temperature sensing device for transmission equipment Download PDFInfo
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- CN102890856A CN102890856A CN2012103382117A CN201210338211A CN102890856A CN 102890856 A CN102890856 A CN 102890856A CN 2012103382117 A CN2012103382117 A CN 2012103382117A CN 201210338211 A CN201210338211 A CN 201210338211A CN 102890856 A CN102890856 A CN 102890856A
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Abstract
The invention provides a junction sensing device for a power supply. A wireless temperature sensor is in network connection with a handheld acquisition device, and temperature information acquired by the handheld acquisition device is transmitted to a monitoring computer through a data transmission base station. The wireless temperature sensor and the handheld acquisition device form a temperature detection device, and the temperature information is transmitted to the monitoring computer through the data transmission base station, so that the temperature state of power equipment can be timely and effectively detected, system recording and monitoring are performed through a network, the problem is timely solved, and an accident caused by overhigh temperature of transmission equipment is prevented; and the device is suitable to be used as a junction temperature monitoring device for the transmission equipment and the power equipment.
Description
Technical field
What the present invention proposed is the equipment of field of power transmission, specifically the transmission facility junction temperature sensor.
Background technology
Along with the high speed development of national economy, the national economy operation is increasing to the dependence of electric power energy supply, and the safe operation of high pressure, the key power transmission network of extra-high voltage is directly connected to the safe operation of whole electrical network, concerns especially economic security of the country and social stability.Electric power transmission line distributes wide, and the detection of equipment, maintenance need a large amount of human and material resources.The device temperature parameter is the important parameter of characterization device health status, also is that routine is patrolled and examined and must be surveyed index, and the equipment running temperature can in time reflect the operation conditions of equipment, for test and the maintenance of equipment provides reliable foundation.
The contact places such as the gold utensil of the conductor part in the transmission line of electricity, wire, joint may cause heating because of reasons such as meeting oxidation corrosion, joint become flexible, thereby have had influence on power system security and sent electrical property.In current power transmission circuit walking operation, the pipeline rider once carries out per month routine and patrols and examines, generally be when the joint appearance change, use far infrared device to carry out temperature survey, thereby after measurement is finished whether the data analysis conversion is exceeded standard, whole process relative complex, larger to artificial degree of dependence, and measuring and error or mistake easily appear in the conversion link.When load be about to occur or great change has occured, need the pipeline rider to carry out the spy and patrol, workload is large, ageing a little less than.Therefore, in the power transmission line inspection operation, be badly in need of a kind of can Measurement accuracy key point temperature, reflect in real time whether temperature transfinites, reduce or remit simultaneously the effective technology means of pipeline rider's workload.
In recent years, the continuous progress of the digital radio communication technology is used also more and more extensive.From technology and material angle, we might be integrated in sensor, microprocessor, radio frequency transmission chip, battery etc. in the very little encapsulation, make an intelligent wireless sensor, so that our very scabrous problem becomes simple in the past.
Simultaneously, the Digital Microwave wireless radio-frequency has been obtained huge advance made in recent years, and the development of wireless digital communication technology has benefited from the comprehensive development of multinomial technology.Related gordian technique roughly comprises: chip technology, antenna technology, wireless transmit-receive technology, data transformation and coding techniques, electromagnetic propagation characteristic.
What power transmission and transformation primary equipment temperature detection is mainly adopted in the field of power at home at present is the thermal infrared imager mode, the method can be measured temperature between 0～200 ℃ in theory, fundamental error is ± (1% * t+0.5%), accuracy is higher, but in the real work, because be subjected to site environment, meteorologic factor, take measurement of an angle and the impact of method of operating, often there are gap in measuring accuracy and validity with theoretical value.Simultaneously, closely can bring potential safety hazard to patrolling and examining personnel self near the target device measurement, the factors such as manually record data can reduce the accuracy of work efficiency and data, and function expansibility is relatively poor are so that infrared technique has produced limitation in the application of current background.
General wireless sense network temp measuring system principle of work: radio temperature sensor be directly installed near the monitored equipment or on, each sensor has unique ID, will record the monitoring point physical location during actual installation, and together in the typing host data base.Monitored dotted state data are measured and sent to the sensor start by set date, these data communication devices cross wireless channel be transferred to the base station with data upload to main frame.Main frame possesses that Monitoring Data is compiled, graphical functions such as displaying, threshold values comparison, monitoring and warning, standardized data communication, realizes the monitoring of equipment state intelligent online.
Patrolling transmission line is with contact sensing temperature measuring equipment System Working Principle: each wireless senser has unique ID, and actual physical address and the sensor ID of monitoring point is corresponding one by one, in the hand-held acquisition terminal of typing.Radio temperature sensor can the real time record Monitoring Data maximum temperature, the moment of minimum temperature and generation thereof, when the close measured point of hand-held acquisition terminal, wireless senser will record the measurement data result and can send on the hand-held acquisition terminal external radio data transmission base station, this external radio data transmission base station meeting auto answer, and with the transmitting time of this wireless senser, identity ID number, ID users, the information recording /s such as battery capacity are interim to the FLASH(of hand-held external radio data transmission base station) in the storer, through Binary Conversion, again with on the data importing handheld terminal daemon software, daemon software is processed these data analysis again, report is patrolled and examined in formation, possible fault is in time provided prompting, for prophylactic repair provides technical support.
Through to the principle work engineering analysis of two different systems as can be known, hand-held acquisition terminal is exactly that the monitoring host computer system of general wireless sense network and data transmission base station are effectively combined, thereby realization is carried out wireless temperature measurement to equipment.In addition, the moment of maximum temperature, minimum temperature and generation thereof that general wireless senser self can not the real time record Monitoring Data, and transmission line of electricity temperature intelligent cruising inspection system wireless senser can be supported.
Summary of the invention
In order to realize the monitoring of power equipment contact temperature, the present invention proposes a kind of transmission facility junction temperature sensor.This installs the combination by radio temperature sensor and hand-held acquisition terminal, and sends data-signal to supervisory control comuter by the data transmission base station, solves the technical matters of power equipment temperature sensing monitoring.
The scheme that technical solution problem of the present invention adopts is: radio temperature sensor and portable collector network connection, the temperature information that portable collector gathers are passed through the data transmission base-station transmission to supervisory control comuter.
Good effect, because the present invention forms temperature-detecting device by radio temperature sensor and hand-held acquisition terminal, and send to supervisory control comuter by the data transmission base station, so can detect timely and effectively the power equipment state of temperature, and carry out system log (SYSLOG) and monitoring by network, deal with problems in order in time pinpoint the problems, prevent that the transmission facility excess Temperature from causing the generation of accident.Suitable to transmission facility and the application of power equipment contact temperature supervising device.
Description of drawings
Fig. 1 is radio temperature sensor of the present invention and portable collector signal connection diagram
Fig. 2 is radio temperature sensor of the present invention, portable collector, data transmission base station and supervisory control comuter signal connection diagram
Among the figure, 1. supervisory control comuter, 2. data transmission base station, 3. radio temperature sensor, 4. portable collector.
Embodiment
According to the figure, radio temperature sensor 3 and portable collector 4 network connections, the temperature information that portable collector gathers is transferred to supervisory control comuter 1 by data transmission base station 2.
Described portable collector is made of panel computer and the external data transmission of USB base station.
The configuration of apparatus of the present invention:
1, this device is equipped with 8.4 cun TFT SVGA multi-point touch screens, USB2.0 interface, earphone jack and integrated microphones, and has Bluetooth transmission, GPS positioning system, handwriting input and wireless networking capabilities.With lithium battery power supply.
2, hand-held acquisition terminal is by data transmission base station external module is connected on the USB interface of handheld device, thereby with signal collecting device and monitoring host computer combination, utilizes 3G or Ethernet mode to carry out network connection.
3, radio temperature sensor is comprised of wireless sender and the MCU of a 2.45GHz.Radio temperature sensor adopts the spread spectrum mode of operation, instantaneous communication speed is: 1Mbps, owing to having adopted broadband communication mechanism, in the effective range of a Wireless Data Transmission base station, can hold simultaneously 65536 even more radio temperature sensor, realize 200 meters of long distances (〉) highly reliable high speed wireless data communication.
4, adopt the installation of Plane Installation or curved surface position: during Plane Installation, this device is fixed on the plane of monitoring temperature point.When curved surface is installed, adopt the mode of guarantor's type anchor ear to install, the material of anchor ear must be nonmagnetic bronze or stainless steel material, and should be with flexible fastening, avoid rigidity fastening expand with heat and contract with cold rear lax.
5, this device adopts high-gain aerial, and the read transducer distance reaches〉100 meters scopes, can satisfy customer requirements fully, be conducive to reduce the power consumption of radio temperature sensor.Because the ground unrest of 2.45GHz frequency range is lower, thereby the sensitivity that is conducive to improve receiver realizes satisfying request for utilization with less power and reasonable prices.
6, separate between the hand-held acquisition terminal, do not interfere with each other, as long as in the communication transmission distance scope, just can gather simultaneously the data of accepting on the wireless senser.
7, the information synchronization between the handheld terminal and information gather, and utilize 3G or Ethernet mode to carry out network connection, by software realize end to data communication between the multiterminal, reach information synchronously and gather.
The technical issues that need to address:
1, internet security: the security relationship of electric system is to national economy, and the safety of wireless sensor network is particularly important in electric system.
2, the extra long life of sensor: owing to electric system all is unusual difficult with the maintenance of sensor and replacing, so reach about 20 year consistent with the life-span of equipment under test of life-span of expectation sensor, this is a challenge to sensor design.
3, the high reliability of high voltage environment lower sensor: since electric system with sensor usually all be installed under the superelevation electromagnetic field environment, under the harsh working environments such as high temperature, high humidity, its protection Design and reliability design are serious challenges.
4, the reliable communicating under the complex electromagnetic environment: have all under the environment such as transformer station, transmission line of electricity, electric supply meter case that highfield disturbs, metal is numerous, cause many warps and fade-out serious, the reliability of communication is caused serious puzzlement.
5, high efficiency network communication protocol: for the wireless senser of using in electric system, battery life is a key issue, and the main aspect that affects battery life is network communication protocol, measured target attribute and working sensor pattern.The measured target attribute can't change, and the working sensor pattern is fully optimized usually, so network communication protocol affects the battery life of sensor greatly to a great extent.
The course of work of the present invention and design main points:
1, radio temperature sensor storage.Satisfying on the collection of hand-hold wireless temperature acquisition terminal and the analyzing and processing temperature measurement data while basis, increase ease for use, circuit technical parameter and data management analysis function, better conveniently patrol and examine special use.Research radio temperature sensor self memory function by hand-hold wireless temperature acquisition terminal, is grasped the temperature of tested transmission line of electricity contact in real time.
2, hand-held acquisition terminal ease for use and data analysis are processed.Hand-held set has the instant playback function of outer gentle equipment contact temperature, can be according to variation of load variations situation awareness temperature etc.Hand-held set has the instant playback function of outer gentle equipment contact temperature; Have power transmission line travel permit figure and wait some technical parameters and data editing function.Back-end data processing, analysis, periodicity comparison function etc.Take a picture and the Hand writing record function.
3, the Electro Magnetic Compatibility of wireless sense network electric power application: wireless senser is to the interference of second power equipment, wireless sensor network mainly is the Radio frequency interference (RFI) of wireless sensor network to the interference of second power equipment, for the different application scene, take different measures to guarantee the reliability service of electric grid secondary equipment.Whole RF indexes of wireless sensor network product must reach following standard-required: GB/T 6113.2-1998 radio disturbance and noise immunity measuring method.Radio disturbance limit value and the measuring method of GB9254-1998 Information Technology Equipment.Avoid interference: all transceiving letter equipment can not be too approaching, in order to avoid form occlusion interfere.Transmission line of electricity is used: owing to substantially do not have secondary device on the transmission line of electricity, so, just can not form interference to other equipment as long as satisfy above-mentioned standard at this application scenarios, can normally use.Major measure is the mounting distance of restriction radiation power and relative sensitive equipment, limits the wireless senser installation site, and sensitive position is in the situation that can not prove safe and harmless and can not install.
Power equipment is to the interference of network communication of wireless sensor: in electric system was used, the communication integrity problem was caused by various factors, takes different technological means or multiple means to use simultaneously solution for different reasons.
For the penetrability problem: in switch electricity cabinet etc. is used, so long as shielding effect causes loss of signal large, select suitable frequency of operation, utilize the insulated window of regulator cubicle to be the electro magnetic window, can reduce signal attenuation, actual measurement shows, the 2.4GHz frequency range goes for most of regulator cubicles, and signal in decay within the acceptable range.
For fading problem: because transformer station's hardware is numerous numerous and jumbled, cause field strength distribution in the transformer station and inhomogeneous and unstable, in order to guarantee the reliability of communication, can adopt hyperchannel, many antennas anti-fading to realize with space diversity reception to communicate at hand-held acquisition terminal.
For the strong-electromagnetic field interference problem: select the weak available frequency band of interference field strength, adopt the strong DSSS Modulation Types of antijamming capability and based on the intelligent spectrum management technology of cognitive radio technology, Dynamic Selection disturbs weak frequency to carry out antenna, but because sensor is distributed in different physical locations, so its interference field strength also is not quite similar, so also will take the effective coordination system and error control mechanism when selecting the communication frequency.
The wireless senser high reliability:
Reliability design: use war products reliability design technology and life cycle management administrative skill, by each link of analytic product design and the characteristic of each parts, use existing a large amount of reliability design data, by methods for designing such as optimal design and weak original paper reinforcement, parallel connection and hot and cold backups, and Computer simulation design and computer reliability checking, guarantee that product reaches designed life and serviceable life.
Reinforcement measure under the high voltage environment: except adopting above-mentioned design, verification method; high electromagnetic field environment for electric system is done special design; adopt the metal all-closed reply of shell equipotential technology strong-electromagnetic field, high humidity and solar ultraviolet radiation; take antistatic protection design and power frequency to disturb the inhibition design to exposing at the parts such as antenna of high electromagnetic field environment; adopt the inferior battery of high temperature resistant lithium and technical grade, army's grade components and parts reply high-temperature work environment, adopt these technological means with guarantee sensor can be under harsh high voltage environment reliably working.
High efficiency network communication protocol: adopt the single-hop communication pattern between node and hand-held acquisition terminal, for reducing node power consumption, so must improve the efficient of communication, we improved hand-held acquisition terminal Antenna Design, adopt antenna and the multichannel diversity technique of high-gain, effectively raise communication distance and improved anti-fading ability, realized that the 0dbm communication distance is greater than the 100m(open ground), be far superior to the at present level (bluetooth 10m) of this frequency range general radio communication, the raising of communication efficiency also means with energy consumption still less transmits more data to farther destination node, has namely reduced node power consumption.
It is links of its power consumption maximum that node sends data, and save power consumption one is to reduce emissive power, but this can affect signal transmission distance, and another way reduces launch time exactly, namely improves traffic rate, and this way is more effective.
In order to improve traffic rate, select Modulation Types very important, although the Modulation Types such as heterogeneous modulation (16PSK), OFDM have higher traffic rate in given bandwidth, but consider the factors such as signal to noise ratio (S/N ratio), link budget, system complexity, GFSK is the efficient Modulation Types of tool, so native system has adopted high efficiency GFSK Modulation Types, realize the high rate communication of 2MBPS, finish the time of a frame traffic less than 200uS, thereby greatly reduced the working time of transmitter, improved the dutycycle of node, decrease the power consumption of node.
Set up transmission line of electricity thermometric pilot zone, dispose this apparatus system, realize the collection of the temperature information of appointed area scope transmission line equipment upper contact.
1) can be comprehensive monitoring dispose state of temperature on the transmission line of electricity relevant device contact, avoid the omission of sensitive temperature monitoring point, and the potential safety hazard that causes and economic loss;
2) radio temperature sensor carries data storage function, can realize that finally getting access to the last time by hand-hold wireless temperature acquisition terminal patrols and examines current temperature measurement data of patrolling and examining, and analyze mxm., minimum, predict in advance the potential safety hazard of bringing because of the power transmission and transforming equipment excess Temperature;
3) by hand-hold wireless temperature acquisition terminal GPS location, can check the information such as the current measured point of search place on line, title, electric pressure, shaft tower number, guarantee line walking the reliability of the data and availability, and line walking whole process is carried out standard and supervision;
4) hand-held set has the instant playback function of outer gentle equipment contact temperature, can be according to variation of load variations situation awareness temperature etc.Hand-held set has the instant playback of outer gentle equipment contact temperature can;
5) have some technical parameters of power transmission line travel permit figure and data editing function.Back-end data processing, analysis, periodicity comparison function etc.Take a picture and the Hand writing record function.
Claims (9)
1. transmission facility junction temperature sensor is characterized in that: radio temperature sensor (3) and portable collector (4) network connection, the temperature information that portable collector gathers is transferred to supervisory control comuter (1) by data transmission base station (2).
2. transmission facility junction temperature sensor according to claim 1, it is characterized in that: described portable collector is made of panel computer and the external data transmission of USB base station.
3. transmission facility junction temperature sensor according to claim 1, it is characterized in that: this device is equipped with 8.4 cun TFT SVGA multi-point touch screens, USB2.0 interface, earphone jack and integrated microphones, and have Bluetooth transmission, GPS positioning system, handwriting input and wireless networking capabilities, with lithium battery power supply.
4. transmission facility junction temperature sensor according to claim 1, it is characterized in that: hand-held acquisition terminal is by data transmission base station external module is connected on the USB interface of handheld device, thereby with signal collecting device and monitoring host computer combination, utilize 3G or Ethernet mode to carry out network connection.
5. transmission facility junction temperature sensor according to claim 1, it is characterized in that: radio temperature sensor is comprised of wireless sender and the MCU of a 2.45GHz; Radio temperature sensor adopts the spread spectrum mode of operation, instantaneous communication speed is: 1Mbps, owing to having adopted broadband communication mechanism, in the effective range of a Wireless Data Transmission base station, can hold simultaneously 65536 even more radio temperature sensor, realize 200 meters highly reliable high speed wireless data communications of long distance.
6. transmission facility junction temperature sensor according to claim 1 is characterized in that: adopt the installation of Plane Installation or curved surface position, during Plane Installation, this device is fixed on the plane of monitoring temperature point; When curved surface is installed, adopt the mode of guarantor's type anchor ear to install, the material of anchor ear must be nonmagnetic bronze or stainless steel material.
7. transmission facility junction temperature sensor according to claim 1 is characterized in that: this device adopts high-gain aerial, and the read transducer distance reaches〉100 meters scopes.
8. transmission facility junction temperature sensor according to claim 1 is characterized in that: separate between the hand-held acquisition terminal, do not interfere with each other.
9. transmission facility junction temperature sensor according to claim 1, it is characterized in that: information synchronization and information between the handheld terminal gather, utilize 3G or Ethernet mode to carry out network connection, by software realize end to data communication between the multiterminal, reach information synchronously and gather.
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| CN2012103382117A CN102890856A (en) | 2012-09-13 | 2012-09-13 | Junction temperature sensing device for transmission equipment |
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Cited By (5)
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| CN105205195A (en) * | 2014-06-25 | 2015-12-30 | 鸿合科技有限公司 | Connection method and device |
| CN105444904A (en) * | 2015-12-10 | 2016-03-30 | 国网四川省电力公司巴中供电公司 | High voltage cable terminal connector temperature caution system |
| CN106327839A (en) * | 2016-09-23 | 2017-01-11 | 厦门矿通科技有限公司 | Integrated intelligent environmental data acquisition device and method |
| CN106768404A (en) * | 2016-11-09 | 2017-05-31 | 无锡宝露重工有限公司 | A kind of forging temperature automated collection systems |
| CN108986442A (en) * | 2018-07-10 | 2018-12-11 | 西华大学 | A kind of radio monitoring operation management apparatus |
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Application publication date: 20130123 |