CN101710003A - On-line temperature monitoring system of high-voltage power switch - Google Patents
On-line temperature monitoring system of high-voltage power switch Download PDFInfo
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- CN101710003A CN101710003A CN200910227966A CN200910227966A CN101710003A CN 101710003 A CN101710003 A CN 101710003A CN 200910227966 A CN200910227966 A CN 200910227966A CN 200910227966 A CN200910227966 A CN 200910227966A CN 101710003 A CN101710003 A CN 101710003A
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Abstract
The invention provides an on-line temperature monitoring system of a high-voltage power switch, comprising a low power consumption temperature sensor and a receiver, wherein the low power consumption temperature sensor is connected with the receiver through an optical fiber. The on-line temperature monitoring system also comprises a communication module and a management host, and the management host and the receiver are connected through the communication module. The on-line temperature monitoring system adopts the low power consumption temperature sensor adopting a lithium battery for supplying power, transmits data through the optical fiber, has safe and stable operation and good capacity of resisting disturbance, guarantees accurate, reliable, real-time and on-line temperature monitoring data, has high response speed, small volume, easy mounting and high cost performance and can save a lot of manpower and material resources.
Description
Technical field
The present invention relates to high voltage electric power equip ment on-line temperature monitoring technology, the on-line temperature monitoring warning system at especially suitable high-voltage switch gear disconnecting link or high voltage bus and high-voltage cable joint place.
Background technology
In generating plant, transformer station, the contact in the high-tension switch cabinet, the joint of high-tension cable are during because of loose contact or excess current operation, and be excessive because of contact resistance, can cause the heating of switch contact or cable splice; As if untimely eliminating, may cause the insulation breakdown of switch cubicle or cable, form significant trouble even fire and take place, thereby cause heavy economic losses.Therefore the temperature of real time on-line monitoring high-voltage switch gear, high-voltage cable joint, effective trouble saving, assurance system reliability service.
At present, temp measuring method on the market has: battery-powered wireless transmission temperature data system, as the patent No. 200820085411.5 " a kind of switch cabinet contact temperature rise on-line monitoring system ", this class wireless transmission temperature data system, have various electromagnetic interference (EMI) at the High Voltage electric field environment, can influence the reliability of wireless transmission; The electric current that the minimum need of wireless transmit are tens milliamperes, for powered battery, power consumption is excessive; Wireless transmit receives and all has antenna, is difficult for debugging and installs.
Summary of the invention
Defective at thermometry existence in the existing high-tension switch cabinet, the purpose of this invention is to provide that a kind of security of operation is stable, antijamming capability is good, data accurately and reliably, but the high voltage electric switch temperature monitoring system of the joint of the contact in the on-line monitoring high-tension switch cabinet, high-tension cable.
On-line temperature monitoring system of high-voltage power switch provided by the invention comprises: the temperature sensor of low-power consumption, receiver, the temperature sensor of low-power consumption is connected with receiver by optical fiber.One of described receiver can connect 1 to 6 of temperature sensor.
The low-power consumption temperature sensor comprises a MCU, semiconductor temperature sensor, optic fiber emission modules and lithium battery.Two pins of the one MCU are connected with data line with the power lead of semiconductor temperature sensor respectively, the power supply and the reading temperature data of control semiconductor temperature sensor; Another pin of the one MCU is connected with optic fiber emission modules, and the temperature data that reads is sent to optic fiber emission modules; Optic fiber emission modules is with data electricity/light conversion, by the optic fiber transceiver module of Optical Fiber Transmission to receiver.
Receiver comprises power supply, the 2nd MCU (more than 32 ports), optic fiber transceiver module, display module and warning device; Power supply is connected with the power supply terminal of the 2nd MCU, optic fiber transceiver module and display module, for they provide power supply; The 2nd MCU is connected with optic fiber transceiver module, receives the data of optic fiber transceiver module; Display module is connected with the 2nd MCU, the displays temperature data; Warning device is connected with the 2nd MCU, surpasses the temperature actuated warning of early warning.
If many receivers are housed, the present invention can also comprise communication module and management host, communication module by light every forming with 485 chips; Management host is connected by communication module with receiver, receives and storage temperature data and alarm logging, so that analyze and inquiry.1 of described management host can connect 1 to 255 receiver.
Management host adopts the mode of inquiry to receive the data of each receiver, by man-machine interface temperature data is intuitively shown, also can revise early warning temperature and temperature rise parameter at any time, surpasses the early warning temperature in case find to measure temperature, sends information; Abundant man-machine interface shows geographic distribution, node temperature operational factor, pre-warning information, history parameters by figure, form, curve, excellent graph type visual, for managerial personnel provide the most direct reliable data, and can regularly preserve data and alarm logging, for inquiry in the future provides direct foundation.
Compare advantage of the present invention with existing temperature monitoring system: the present invention adopts the low-power consumption temperature sensor of lithium battery power supply, and by the Optical Fiber Transmission data, system's security of operation is stable, antijamming capability is good, guarantee temperature measurement data accurately and reliably, real-time online, response speed is fast, and volume is little, be easy to install, the cost performance height can be saved great amount of manpower and material resources.
Description of drawings
Fig. 1 is the on-line temperature monitoring system of high-voltage power switch structural representation
Fig. 2 is a low-power consumption temperature sensor circuit schematic diagram
Fig. 3 is the receiver power supply circuit theory diagrams
Fig. 4 is receiver communication module circuit theory diagrams
Fig. 5 is receiver the 2nd MCU circuit theory diagrams
Fig. 6 is receiver optic fiber transceiver module circuit theory diagrams
Fig. 7 is receiver display module circuit theory diagrams
Fig. 8 is a temperature monitoring management software process flow diagram
Embodiment
Below the contrast accompanying drawing is made the present invention and being further described.
One embodiment of the present invention:
Comprise: the temperature sensor of low-power consumption, receiver, the temperature sensor of low-power consumption is connected with receiver by optical fiber.Described receiver connects the temperature sensor of 6 low-power consumption.
Described low-power consumption temperature sensor as shown in Figure 2, comprise a MCU U15, semiconductor temperature sensor Q1, optic fiber emission modules P2 and lithium battery BT1, the one MCU U15 selects the chip 16c56a of Microchip company for use, semiconductor temperature sensor Q1 selects the DS18B20 of Dallas company for use, and optic fiber emission modules P2 adopts HFBR1414.17 pin of the one MCU U15 directly are connected with the data line of semiconductor temperature sensor Q1, give the power lead power supply of semiconductor temperature sensor Q1 with 18 pin of a MCU U15, the temperature data that the one MCU U15 reads is given optic fiber emission modules P2 from 10 human hair combing wastes, and optic fiber emission modules P2 arrives data the optic fiber transceiver module U9-U14 of receiver by Optical Fiber Transmission.
The working method of low-power consumption temperature sensor is as follows: be operated in park mode after a MCU U15 starts, activate by the house dog that carries during thermometric, record temperature data after packing by optic fiber emission modules P2 transmission, enter park mode once more; Because semiconductor temperature sensor DS18B20 adopts the CMOS technology, power consumption is very little, is operated in power-down mode after initialization is finished, and power supply earlier during thermometric records outage once more after the temperature, energy consumption is dropped to minimum; Compare with adopting wireless mode transmission data by the optical fiber transmission, power consumption almost can be ignored.The average power consumption electric current of whole temperature sensor is less than 8 microamperes, with the available 6-8 of lithium electricity power supply of 1.2 ampere-hours; Experiment shows that the power consumption of this temperature sensor can improve more than 10 times than existing product, has prolonged the serviceable life of battery widely, makes the work that this temperature sensor can be reliably and with long-term.
Described receiver comprises: power supply, the 2nd MCU, optic fiber transceiver module, display module and warning device; The power supply of receiver is imported power supply as shown in Figure 3 earlier through the LM2575U1 voltage stabilizing, and one tunnel process DC-DC U3 isolates to be provided+the 5v power supply, and the process 1117U2 voltage stabilizing of another road provides+the 3.3v power supply, and the two-way power supply is connected with the power supply terminal of receiver remaining circuit; The 2nd MCU of receiver adopts Ling Yang 61MCU, and circuit is connected with optic fiber transceiver module, display module and warning device respectively by IO as shown in Figure 5; Receiver optic fiber transceiver module circuit is made up of six HFBR2412 (U9-U14) as shown in Figure 6, the temperature data that receives is sent into the IOA0-5 of Ling Yang 61MCU; Receiver Liquid Crystal Module circuit is selected band character library liquid crystal MzL02-12864 for use as shown in Figure 7, and Ling Yang 61MCU delivers to Liquid Crystal Module with the temperature data that receives by IOA8-15.Ling Yang 61MCU compares and measures temperature and environment temperature and calculates the temperature rise variation, and the monitoring temperature rise changes, and surpasses the early warning temperature then with IOB7 zero setting, starts warning.
Another embodiment of the present invention, as shown in Figure 1:
On the basis of last a kind of embodiment, also comprise communication module and management host, management host connects 4 receivers.Receiver communication module circuit as shown in Figure 4, Ling Yang 61MCU is connected with communication module, every forming with 485 chips, light adopts high-speed light every 6N137U5-U7 every chip to communication module by light, with Ling Yang 61MCU and the isolation of 485 chips; 485 chips are selected high withstand voltage chip 75184U8 for use, are connected with management host by 485 buses, send temperature data and alarm logging to management host.
The temperature monitoring management software flow process of management host as shown in Figure 8, after the initialization of interface, adopt the mode of inquiring about to receive the data of each receiver, and displays temperature is on corresponding geographic distribution, also can revise early warning temperature and temperature rise parameter at any time, surpass the early warning temperature in case find to measure temperature, send information, start and report to the police.Abundant man-machine interface shows geographic distribution, node temperature operational factor, pre-warning information, history parameters by figure, form, curve, excellent graph type visual, for managerial personnel provide the most direct reliable data, make things convenient for managerial personnel's monitoring and observation, remove a hidden danger as early as possible, minimizing accident to greatest extent.
Claims (4)
1. on-line temperature monitoring system of high-voltage power switch is characterized in that comprising: the temperature sensor of low-power consumption, receiver, and the temperature sensor of low-power consumption is connected with receiver by optical fiber;
Described low-power consumption temperature sensor comprises a MCU, semiconductor temperature sensor, optic fiber emission modules and lithium battery; Two pins of the one MCU are connected with data line with the power lead of semiconductor temperature sensor respectively; Another pin of the one MCU is connected with optic fiber emission modules; Optic fiber emission modules connects the optic fiber transceiver module of receiver by optical fiber;
Described receiver comprises power supply, the 2nd MCU, optic fiber transceiver module, display module and warning device; Power supply is connected with the power supply terminal of the 2nd MCU, optic fiber transceiver module and display module; The 2nd MCU is connected with optic fiber transceiver module; Display module is connected with the 2nd MCU, the displays temperature data; Warning device is connected with the 2nd MCU, surpasses the temperature actuated warning of early warning.
2. on-line temperature monitoring system of high-voltage power switch as claimed in claim 1 is characterized in that, comprises communication module and management host, communication module by light every forming with 485 chips; Management host is connected by communication module with receiver.
3. on-line temperature monitoring system of high-voltage power switch as claimed in claim 1 or 2 is characterized in that, described receiver connects 1 to 6 of temperature sensor.
4. on-line temperature monitoring system of high-voltage power switch as claimed in claim 2 is characterized in that, described management host connects 1 to 255 receiver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910227966A CN101710003A (en) | 2009-12-01 | 2009-12-01 | On-line temperature monitoring system of high-voltage power switch |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910227966A CN101710003A (en) | 2009-12-01 | 2009-12-01 | On-line temperature monitoring system of high-voltage power switch |
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| CN101710003A true CN101710003A (en) | 2010-05-19 |
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| CN200910227966A Pending CN101710003A (en) | 2009-12-01 | 2009-12-01 | On-line temperature monitoring system of high-voltage power switch |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102290787A (en) * | 2010-06-18 | 2011-12-21 | 上海华建电力设备股份有限公司 | Protective monitoring device with temperature measurement of microcomputer electromotor |
| CN102853942A (en) * | 2012-09-11 | 2013-01-02 | 宁波德沃电气有限公司 | Monitoring system for temperature of switchboard room |
| CN103674297A (en) * | 2013-12-05 | 2014-03-26 | 国家电网公司 | Temperature measurement system for cable joint of annular cabinet |
| CN106768429A (en) * | 2017-03-13 | 2017-05-31 | 无锡亚天光电科技有限公司 | A kind of high-tension switch cabinet temperature probe assembly technology |
| CN110488120A (en) * | 2019-08-19 | 2019-11-22 | 国网湖南省电力有限公司 | A kind of temperature of high-tension switch cabinet electric current integration inline diagnosis method, system and medium |
-
2009
- 2009-12-01 CN CN200910227966A patent/CN101710003A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102290787A (en) * | 2010-06-18 | 2011-12-21 | 上海华建电力设备股份有限公司 | Protective monitoring device with temperature measurement of microcomputer electromotor |
| CN102853942A (en) * | 2012-09-11 | 2013-01-02 | 宁波德沃电气有限公司 | Monitoring system for temperature of switchboard room |
| CN103674297A (en) * | 2013-12-05 | 2014-03-26 | 国家电网公司 | Temperature measurement system for cable joint of annular cabinet |
| CN103674297B (en) * | 2013-12-05 | 2016-10-05 | 国家电网公司 | A kind of temperature measurement system for cable joint of annular cabinet |
| CN106768429A (en) * | 2017-03-13 | 2017-05-31 | 无锡亚天光电科技有限公司 | A kind of high-tension switch cabinet temperature probe assembly technology |
| CN110488120A (en) * | 2019-08-19 | 2019-11-22 | 国网湖南省电力有限公司 | A kind of temperature of high-tension switch cabinet electric current integration inline diagnosis method, system and medium |
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Open date: 20100519 |