CN201527832U - Electric cable device for intelligently on-line measuring temperature and local discharge - Google Patents
Electric cable device for intelligently on-line measuring temperature and local discharge Download PDFInfo
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- CN201527832U CN201527832U CN2009202283813U CN200920228381U CN201527832U CN 201527832 U CN201527832 U CN 201527832U CN 2009202283813 U CN2009202283813 U CN 2009202283813U CN 200920228381 U CN200920228381 U CN 200920228381U CN 201527832 U CN201527832 U CN 201527832U
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Abstract
The utility model discloses an electric cable device for intelligently on-line measuring temperature and local discharge, which is mainly composed of an optical fiber type electric cable, accessories for the optical fiber type electric cable, an optical fiber grating temperature sensor, an improved wide frequency sensor in rogowski structure, a signal conditioning module, a processor module, a radio communication module, and a human-machine interaction module. By on-line measuring the temperature and the local discharge in real-time, the utility model can grasp the insulation condition of the electric cable, provide pre-alarm information and failure information after synthetic evaluation, ensures the reliability of the insulation of the electric cable, improves the reliability and security of the operation of the electric grid, lowers the possibility of occurrence of electric grid operation accident.
Description
Technical field
The utility model relates to the cable unit that a kind of intelligent temperature measurement on-line and survey office put, and belongs to the cable technology field.
Background technology
Power cable plays an important role in operation of power networks, and its safe operation acquires a special sense to whole electrical network.Along with China's rapid development of economy, rise year by year in many urban power consumption, and electric load increases sharply, and the power transmission and distribution capacity significantly increases, and is more and more higher to the insulating requirements of cable, and it is very necessary strengthening the state of insulation of operation cable is monitored in real time.Too high and the partial discharge of temperature is to cause the key factor of the insulation damages of cable and electric cable accessories, therefore, cable and annex thereof are carried out the online in real time measurement, and situation is put in the temperature drawn game of grasping cable in real time, just can reasonably provide the state of cable security stable operation.
Summary of the invention
The cable unit that provides a kind of intelligent temperature measurement on-line and survey office to put is provided the purpose of this utility model, more traditional interruption maintenance prevention cable insulation damages scheme, this device can comprehensive monitoring cable built-in electrical insulation fault, avoid interruption maintenance, and can carry out online early warning to the insulation of cable, make cable out of service before fault takes place, and allow cable in stock or back-up circuit that it is powered, avoid taking place the power failure fault, guarantee stabilization of power grids reliability service.
The technical solution of the utility model is: the cable unit that intelligent temperature measurement on-line and survey office put, comprise signal condition module, processor module, wireless communication module and human-computer interaction module, it is characterized in that: also comprise fiber-optic grating sensor, modified model Luo-coil structure broad frequency sensor; Its connected mode is: fiber-optic grating sensor, modified model Luo-coil structure broad frequency sensor are connected with the signal condition module respectively, signal condition module, processor module and wireless communication module are connected successively, and wherein processor module is connected with human-computer interaction module is two-way.
The cable unit that aforesaid intelligent temperature measurement on-line and survey office put is characterized in that: the signal condition module adopts a kind of ARM7 processor STR736FV2.
The cable unit that aforesaid intelligent temperature measurement on-line and survey office put is characterized in that: the signal condition module is made up of filter circuit, modulate circuit, discharge circuit and analog to digital converter; Its connected mode is: filter circuit, signal conditioning circuit, discharge circuit and analog to digital converter are connected successively.
Aforesaid intelligent thermometric and survey office payout, it is characterized in that: human-computer interaction module mainly is made up of button and liquid crystal display, and button adopts programmable logic device to constitute, and Liquid Crystal Module adopts the proprietary module of Chinese character base.
The beneficial effects of the utility model are: the optical fiber type cable, the optical fiber type electric cable accessories, fiber-optic grating sensor, modified model Luo-coil structure broad frequency sensor, the signal condition module, processor module, the impact degree that cable insulation is suffered is predicted in the collection that wireless communication module and human-computer interaction module are put by the drawn game to temperature, compare with predefined insulation criterion, provide the normal operating condition of cable, alert status and fault are reported state identification for repairment, make cable out of service before fault takes place, and allow cable in stock or back-up circuit that it is powered, avoid taking place the power failure fault, guarantee stabilization of power grids reliability service, reduce the power failure maintenance times, reduce maintenance cost.
Description of drawings
Fig. 1 is intelligent thermometric and the survey office payout device schematic diagram of the utility model embodiment;
Fig. 2 is the schematic diagram of signal condition module among Fig. 1;
Fig. 3 is the schematic diagram of processor module among Fig. 1;
Fig. 4 is the schematic diagram of wireless communication module among Fig. 1;
Fig. 5 is the schematic diagram of human-computer interaction module among Fig. 1.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described.
The explanation of mark among Fig. 1: 1-fiber-optic grating sensor, 2-modified model Luo-coil structure broad frequency sensor.
As shown in Figure 2, the signal condition module of the utility model embodiment mainly is made up of filter circuit, modulate circuit, discharge circuit and analog to digital converter.The signal that signal that filter circuit collects fiber-optic grating sensor 1 and modified model Luo-coil structure broad frequency sensor 2 collect carries out giving modulate circuit after the Filtering Processing, modulate circuit carries out giving discharge circuit after the de-noising to the voltage that sends and amplifies, at last amplifying signal being given analog to digital converter (ADS1672) changes, AD16S72 has 24 precision, the 625kBPS sampling rate, the digital quantity after the conversion is by interrupting giving processor module.
As shown in Figure 3, the processor module of the utility model embodiment adopts a kind of ARM7 processor STR736FV2.Processor module is mainly by STR736FV2, active crystal oscillator, clock chip, E
2PROM, reset circuit, gate, communication interface chip are formed.The 36MHz of active crystal oscillator through providing processor STR736FV2 to use after the frequency multiplication, the STR736FV2 processor is supported embedded software, has reduced writing of program code greatly; Clock chip adopts DS1307, adopts I
2The C bus is connected to STR736FV2; Gate is used programming device GAL20V8B chip, adopts the GAL language to write, and utilizing easily, 51 fever writes can write chip with it; Bleed off electrical storage and adopt E
2PROM uses MCM2814 chip-stored and the criterion value of revising the cable running status, and MCM2814 chip-stored space is 256Byte; Communication interface of the present invention adopts traditional RS485 or RS232 interface, makes things convenient for program debugging and is connected, and uses the Max1482 chip of MAXIM to realize the RS485 function, uses Max232cpe to realize the RS232 interface function.
As shown in Figure 4, the wireless communication module of the utility model embodiment adopts the wireless GPRS transmission means.Wireless communication module of the present utility model is made up of radio-cell TC35I and MCU (PIC16F873), directly links to each other between TC35I and MCU, by AT command set communication mode and the receiving terminal number of TC35I is set in MCU.Wireless communication module is connected by RS485 or RS232 bus with processor module, realizes the transmission and the reception of data flow.The LED lamp shows that its state for green, is red during fault during wireless communication module work.When using for the first time, wireless communication module need set it by the serial ports of PC, as: communication mode and receiving terminal number etc.
As shown in Figure 5, the human-computer interaction module of the utility model embodiment, form by push-button unit and liquid crystal display, button adopts programmable logic device GAL20V8B programming to realize 8 inputs, be respectively ESC, ENTER, UP, DOWN, LEFT, RIGHT, SETTING and DELETE function, the I/O that is connected to processor is 3, function such as the main complete call historical information of button, voltage definite value are imported, withdrawed from, affirmation; Liquid crystal display adopts the proprietary module of silicon wound company's Chinese character base.
The optical fiber grating temperature-measuring method is adopted in the temperature survey of cable and annex, optical fiber grating temperature-measuring is to utilize the light sensitivity of fiber optic materials to carry out thermometric at the space phase grating that fiber core forms, the sensing process of fiber-optic grating sensor is by extraneous parameter information to be obtained in the modulation of Bragg grating centre wavelength, is a kind of wavelength-modulated type Fibre Optical Sensor.
Embodiment 1: optical fiber and aluminium sheath are bonded together, the thermometric of cable is that it is embedded in the cable conductor, the thermometric of electric cable accessories is optical fiber and aluminium sheath to be bonded together be wrapped in the stress cone surface, utilize the light emitted broadband light, when broadband light is transmitted in fiber grating, the light that satisfies the Bragg condition is reflected, and wavelength produces displacement difference, and reflection wavelength skew and effective refractive index and grating constant have direct relation.The photo-thermal effect that temperature causes changes effective refractive index, and thermal expansion system causes grating constant to change.Utilize that Optical Fiber Transmission is coupled, wavemeter, signal analysis, and give the signal condition module by the voltage of transmission cable after with temperature transition, again by processor to its calculating and analysis, data are carried out remote transmission to Surveillance center by wireless communication module, or carry out the scene demonstration by human-computer interaction module.
The office of cable and annex puts and measures main pass through modified model Luo-coil structure broad frequency sensor, transmission cable, signal condition module, processor module, wireless communication module, human-computer interaction module realization.Modified model Luo-coil structure broad frequency sensor adopts differential connection, and external interference signal is had significant inhibitory effect, and modified model Luo-coil detection streamer office puts and need not change cable and electric cable accessories structure, and measurement is put in the office of the cable that is specially adapted to put into operation.
Modified model Luo-coil structure broad frequency sensor is made up of nickel Zinc material magnetic core, coil, forceps type structure, transfer cable wire, integrator, it is little that nickel Zinc material magnetic core has high-frequency loss, use bandwidth, be applicable to the requirement of wide-band width measurement, transducer is given integrator after adopting differential connection.Lead and number of turn decision sensitivity, frequency bandwidth, this transducer have adopted the suitable number of turn and sectional area of wire after by reasonable test.This sensor cable office puts and need not change cable and electric cable accessories structure, and measurement is put in the office of the cable that is specially adapted to put into operation.Modified model Luo-coil structure broad frequency sensor is enclosed within outside the cable shield, is 2 through measuring signal to noise ratio after amplifying 100 times, discharge capacity is the local discharge signal of 10pC.
Embodiment 2: modified model Luo-coil structure broad frequency sensor can be enclosed within outside the cable shield, can measure signal to noise ratio after amplifying 100 times through signal condition and be 2, discharge capacity is the local discharge signal of 10pC.Office's discharge signal is sampled after transmission cable is given integrator through Luo-coil, the voltage signal that integrator is put office is given the signal condition module, again by processor module to its calculating and analysis, data are carried out remote transmission to Surveillance center by wireless communication module, or carry out the scene demonstration by human-computer interaction module.
The initial stage temperature was not very high when cable generation office put, traditional cable thermometric mode can not in time be found the latent fault of cable, but it is very important that the anti-interference of measurement is put in the office of cable, in the heavier occasion of interference source, should adopt thermometric and survey office to put the insulation status that the mode that combines is judged cable, to provide comprehensive evaluation index; Office puts and can find potential faults in advance than temperature, but it is very important that the anti-interference of measurement is put in office, in the heavier zone of interference source, for fear of fault misdescription, can put by office and provide fault pre-alarming information, operations staff's response in time and close attention office are put a little, raise gradually if a temperature is put in measurement temperature discovery office, provide fault warning this moment, put the overall merit that changes with thermometric by survey bureau like this and can guarantee the reliable and safety of cable.
Claims (4)
1. the cable unit that intelligent temperature measurement on-line and survey office put, comprise optical fiber type cable, optical fiber type electric cable accessories, signal condition module, processor module, wireless communication module and human-computer interaction module, it is characterized in that: also comprise fiber-optic grating sensor, modified model Luo-coil structure broad frequency sensor; Its connected mode is: fiber-optic grating sensor, modified model Luo-coil structure broad frequency sensor are connected with the signal condition module respectively, signal condition module, processor module and wireless communication module are connected successively, and wherein processor module is connected with human-computer interaction module is two-way.
2. the cable unit that intelligent temperature measurement on-line according to claim 1 and survey office put is characterized in that: the signal condition module adopts a kind of ARM7 processor STR736FV2.
3. the cable unit that intelligent temperature measurement on-line according to claim 1 and survey office put is characterized in that: the signal condition module is made up of signal conditioning circuit, filter circuit, discharge circuit and analog to digital converter; Its connected mode is: signal conditioning circuit, filter circuit, discharge circuit and analog to digital converter are connected successively.
4. intelligent thermometric according to claim 1 and survey office payout, it is characterized in that: human-computer interaction module mainly is made up of button and liquid crystal display, and button adopts programmable logic device to constitute, and Liquid Crystal Module adopts the proprietary module of Chinese character base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202283813U CN201527832U (en) | 2009-09-25 | 2009-09-25 | Electric cable device for intelligently on-line measuring temperature and local discharge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202283813U CN201527832U (en) | 2009-09-25 | 2009-09-25 | Electric cable device for intelligently on-line measuring temperature and local discharge |
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| CN201527832U true CN201527832U (en) | 2010-07-14 |
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| CN2009202283813U Expired - Fee Related CN201527832U (en) | 2009-09-25 | 2009-09-25 | Electric cable device for intelligently on-line measuring temperature and local discharge |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101937049A (en) * | 2010-08-04 | 2011-01-05 | 自贡电业局 | Estimator for monitoring online state of power cable by ultraviolet method |
| CN102313852A (en) * | 2011-08-01 | 2012-01-11 | 武汉理工大学 | Optical-fiber intelligent sensing power cable running state monitoring method and apparatus thereof |
| CN102495340A (en) * | 2011-12-06 | 2012-06-13 | 山东电力集团公司青岛供电公司 | Online power cable partial discharge monitoring system based on electromagnetic waves and high-frequency current transformer (CT) |
| CN102768330A (en) * | 2011-04-29 | 2012-11-07 | 通用电气公司 | System and device for detecting defects in underground cables |
| CN103424674A (en) * | 2013-08-02 | 2013-12-04 | 华北电力大学 | Detection device and warning method for partial discharge of power cable terminal |
| CN103776563A (en) * | 2013-11-25 | 2014-05-07 | 上海华魏光纤传感技术有限公司 | Fiber point-mode temperature measuring system with wireless networking function |
| CN104391234A (en) * | 2014-12-04 | 2015-03-04 | 国家电网公司 | Intermittent servicing partial discharge online monitoring system |
| CN106840450A (en) * | 2016-12-29 | 2017-06-13 | 大连银海贡创科技发展有限公司 | A kind of high-precision optical fiber composite cable intelligent monitoring platform |
| CN107300427A (en) * | 2017-08-03 | 2017-10-27 | 南京科瑞电力科技有限公司 | A kind of temperature warning system and method for power distribution network primary equipment |
| CN108627685A (en) * | 2017-03-24 | 2018-10-09 | Abb瑞士有限公司 | Monitoring attachment for the electrical equipment for being provided with connecting terminal |
| CN112255517A (en) * | 2020-11-18 | 2021-01-22 | 云南电网有限责任公司临沧供电局 | Local discharge and temperature combined online monitoring system of switch cabinet |
| CN113324592A (en) * | 2021-06-30 | 2021-08-31 | 国网河北省电力有限公司信息通信分公司 | System, method, switching device and storage medium for pipe gallery monitoring |
| CN113488279A (en) * | 2021-07-19 | 2021-10-08 | 安徽徽宁电器仪表集团有限公司 | Environment-friendly control cable |
-
2009
- 2009-09-25 CN CN2009202283813U patent/CN201527832U/en not_active Expired - Fee Related
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101937049A (en) * | 2010-08-04 | 2011-01-05 | 自贡电业局 | Estimator for monitoring online state of power cable by ultraviolet method |
| CN102768330A (en) * | 2011-04-29 | 2012-11-07 | 通用电气公司 | System and device for detecting defects in underground cables |
| CN102768330B (en) * | 2011-04-29 | 2016-06-01 | 通用电气公司 | For detecting system and the device of the defect in buried cable |
| CN102313852B (en) * | 2011-08-01 | 2014-08-13 | 武汉理工大学 | Optical-fiber intelligent sensing power cable running state monitoring method and apparatus thereof |
| CN102313852A (en) * | 2011-08-01 | 2012-01-11 | 武汉理工大学 | Optical-fiber intelligent sensing power cable running state monitoring method and apparatus thereof |
| CN102495340A (en) * | 2011-12-06 | 2012-06-13 | 山东电力集团公司青岛供电公司 | Online power cable partial discharge monitoring system based on electromagnetic waves and high-frequency current transformer (CT) |
| CN103424674A (en) * | 2013-08-02 | 2013-12-04 | 华北电力大学 | Detection device and warning method for partial discharge of power cable terminal |
| CN103776563A (en) * | 2013-11-25 | 2014-05-07 | 上海华魏光纤传感技术有限公司 | Fiber point-mode temperature measuring system with wireless networking function |
| CN104391234A (en) * | 2014-12-04 | 2015-03-04 | 国家电网公司 | Intermittent servicing partial discharge online monitoring system |
| CN106840450A (en) * | 2016-12-29 | 2017-06-13 | 大连银海贡创科技发展有限公司 | A kind of high-precision optical fiber composite cable intelligent monitoring platform |
| CN108627685A (en) * | 2017-03-24 | 2018-10-09 | Abb瑞士有限公司 | Monitoring attachment for the electrical equipment for being provided with connecting terminal |
| CN108627685B (en) * | 2017-03-24 | 2022-07-26 | 泰连服务有限公司 | Monitoring accessory for an electrical apparatus provided with a terminal |
| CN107300427A (en) * | 2017-08-03 | 2017-10-27 | 南京科瑞电力科技有限公司 | A kind of temperature warning system and method for power distribution network primary equipment |
| CN112255517A (en) * | 2020-11-18 | 2021-01-22 | 云南电网有限责任公司临沧供电局 | Local discharge and temperature combined online monitoring system of switch cabinet |
| CN113324592A (en) * | 2021-06-30 | 2021-08-31 | 国网河北省电力有限公司信息通信分公司 | System, method, switching device and storage medium for pipe gallery monitoring |
| CN113488279A (en) * | 2021-07-19 | 2021-10-08 | 安徽徽宁电器仪表集团有限公司 | Environment-friendly control cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100714 Termination date: 20170925 |