CN103557957A - Device for online monitoring temperature of contact of substation equipment - Google Patents
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Abstract
The invention provides a device for online monitoring the temperature of a contact of substation equipment, and belongs to the technical field of devices for monitoring the temperature of the substation equipment. In order to solve technical problems, the invention provides a device for conveniently monitoring the temperature of the contact of the substation equipment. According to the technical scheme, the device comprises a cross-district monitoring master station computer, monitoring center computers, bus gateways, temperature collectors and passive wireless temperature sensors. The cross-district monitoring master station computer is installed in a cross-district monitoring master station, the monitoring center computers are installed in a substation monitoring center, the bus gateways are installed in a distribution room, the temperature collectors are installed on a switch cabinet, and the passive wireless temperature sensors are installed on the surface of a monitored element. The cross-district monitoring master station computer is connected with the multiple monitoring center computers which are connected with the multiple bus gateways, the bus gateways are connected with the multiple temperature collectors through communication buses, and the temperature collectors are connected with the multiple passive wireless temperature sensors through a wireless radio frequency network. The device is suitable for power supply departments.
Description
Technical field
Substation equipment contact temperature on-Line Monitor Device of the present invention, belongs to substation equipment device for detecting temperature technical field.
Background technology
Power grid security is produced and is not only a huge and complicated systems engineering, and be Utilities Electric Co. and even whole society's reform, the basis of development and stabilization, it is the most important thing of following China and even the development of whole world intelligent grid, State Council issued in a series of vital documents such as the < < Green Development white paper > > of State Grid Corporation of China in < < National Program for Medium-to Long-term Scientific and Technological Development > > and the national grid of in February, 2006 issue April 19, intelligent grid safety guarantee has been included the great theme of first developing and setting about implementing of country in.
Each equipment in transformer station is in During Process of Long-term Operation, the positions such as the contact of switch and bus connection are because of aging or contact resistance is excessive generates heat, and the temperature of these heating positions cannot be monitored, finally cause thus accident to occur, power equipment safety reliability is the important step that ultra-large power transmission and distribution and power grid security ensure, in lasting expansion power supply, bring a series of safety problem to electrical network electric equipment simultaneously, for avoiding as much as possible all kinds of electric power accidents, the task of power equipment safety operation monitoring is in real time extremely urgent.
An important hidden danger of the contact in grid equipment and the power grid security of joint, existing statistics shows, it mainly occurs in fault as upper/lower positions: one, dynamic and static contact fault in switch cubicle, switch cubicle is as a kind of power equipment of extensive utilization, switch cubicle is the visual plant in electrical power trans mission/distribution system, is bearing the vital role of cut-offfing and closing power circuit, line fault protection, monitoring operation electric quantity data; Switchgear is bad because of the dynamic and static contact of primary cut-out, adds that the factors such as long-term large electric current, contact are aging easily cause its contact resistance and increase, thereby causes long-time heating, the too high high-voltage board that even finally occurs of contact temperature rise to burn fault; Two, cable splice fault, along with loosening, the insulation ag(e)ing of the prolongation of working time, crimp head and shelf depreciation, high-pressure leakage etc., the rising of heating and temperature will be caused, the rising of temperature will make these situations further worsen, this will impel temperature further to promote, the result of this vicious cycle just causes short circuit blows out, even fire.
For solving this difficult problem, from temperature-measurement principle, conventionally there are several modes, from transmission of angle, comprise wired and Wireless Data Transmission mode.
One, conventional thermometric mode: the shortcoming of the thermometric modes such as conventional thermopair, thermal resistance, semiconductor temperature sensor is cannot wireless and passive, need plain conductor signal transmission, cannot independent wireless work, insulating property can not guarantee, even employing wireless sending module, under magnetic field, electric field and the thermal field complex situations of electrical network, antijamming capability is weak and cannot work.
Two, optical fiber temperature-measurement: fibre optic temperature sensor adopts fiber optic transmission temperature signal, light transmitting fiber has excellent insulating property, high pressure in can isolating switch cabinet, therefore fibre optic temperature sensor can directly be installed on the high-voltage contact in switch cubicle, the running temperature of Measurement accuracy high-voltage contact, realize the on-line monitoring of switch cubicle contact running temperature, yet, optical fiber has easy to break, easily broken, the characteristics such as non-refractory, thereby after accumulation dust, easily cause optical fiber creeping discharge that insulativity is reduced, optical fiber belongs to wired mode, can destroy existing equipment framework, affected by switch cabinet structure, the difficulty that connects up in cabinet is larger, in addition, the cost of optical fiber temperature-measurement is also relatively high.
Three, infrared measurement of temperature: infrared measurement of temperature is contactless temperature-measuring, in the temperature monitoring of the equipment such as transformer station's sleeve pipe, lightning arrester, bus, apply more, but because high-tension switch cabinet inner structure is complicated, element blocks mutually more, by infared spectrum, indirectly obtaining its accuracy of temperature data can not meet the demands, and to the Computer Recognition Technology level of infared spectrum, can't substitute artificial cognition, and automaticity is not high, the cost of thermal infrared imager is higher simultaneously, is unfavorable for promoting the use of; Infrared measurement of temperature is subject to environment and the interference of electromagnetic field around in addition, because the space in switch cubicle is very narrow and small, cannot installation infrared temperature probe (because probe must keep certain safe distance with testee, and need to be over against the surface of testee), require measured point can in the visual field, there is no coverage, and surface clean, to guarantee accuracy, has dead angle to occur while therefore using infrared thermoviewer to carry out temperature survey to it, cannot all monitor; Infrared thermoviewer is measured and must staff be held instrument and measure to scene, cannot realize long-range, Real-Time Monitoring, wastes a large amount of manpowers; When the disconnecting link to outdoor etc. is monitored, due to distant, cost is higher, runs into ice and snow weather, and this monitoring of equipment was lost efficacy.
Four, active radio thermometric: active radio temperature sensor size conventionally relatively large and need is often changed battery, system maintenance cost is higher, simultaneously, battery is unsuitable for working under the condition of high temperature, excess Temperature can affect battery normal operation, finally affect measuring accuracy, even there will be false alarm; When battery electric quantity is not enough, there will be the phenomenon of false alarm in addition, affect monitoring accuracy; The antenna that current most wireless senser adopts is in addition common sucker antenna, and this antenna, due to its profile reason, when the contact temperature monitoring in switch cubicle, cannot be realized the installation in handcart cabinet.
Summary of the invention
The present invention overcomes the deficiency that prior art exists, and technical matters to be solved is: a kind of system that facilitates substation equipment contact temperature monitoring is provided.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is: substation equipment contact temperature on-Line Monitor Device, comprise the transregional master station computing machine that is arranged on transregional master station, be arranged on Surveillance center's computing machine at supervisory control of substation center, be arranged on the bus gateway of switchgear building, be arranged on Temperature sampler and the passive wireless temperature sensor that is arranged on detected element surface on switch cubicle;
Described transregional master station computing machine is connected with a plurality of Surveillance center computing machines, described Surveillance center computing machine is connected with a plurality of bus gateways, described bus gateway is connected with a plurality of Temperature samplers by communication bus, described Temperature sampler is connected with a plurality of passive wireless temperature sensors by radio frequency network, and described passive wireless temperature sensor adopts SAW Temperature Sensors.
Described Temperature sampler is connected with collector antenna, and Temperature sampler is by collector antenna transmission and receive radio frequency signal.
Described Temperature sampler is arranged on switch cubicle outside, and described collector antenna is arranged on inside switch cabinet.
Described passive wireless temperature sensor includes: interdigital transducer, reflecting grating and piezoelectric substrate, described interdigital transducer and reflecting grating are arranged on piezoelectric substrate.
Described passive wireless temperature sensor also includes sensor antenna, and described sensor antenna is electrically connected to above-mentioned interdigital transducer.
Described passive wireless temperature sensor is divided into: tuning-fork-type sensor, mosaic sensor and binding type sensor.
Described communication bus comprises: RS485 bus, CAN bus and RS232 bus.
The beneficial effect that the present invention compared with prior art has is:
One, the present invention can realize the passive and wireless remote monitoring of switch cabinet of converting station contact temperature, forms three-dimensional real-time remote monitoring system, can meet the temperature detection of various switch cubicle equipment, and whole apparatus structure is succinct, easy to install;
Two, without power supply, reduce high maintenance and false alarm that battery produces, sensor adopts passive induction mode, without battery-operated, has reduced the maintenance cost that battery altering brings, and can not impact ecologic environment simultaneously;
Three, safe and reliable, wireless temperature sampling mode is without line in measured point or related support structure, between sensor and receiving equipment without electrical link, thereby realized high pressure isolation, support equipment safe operation;
Four, easy for installation flexibly, passive wireless temperature sensor volume little and and collector between data wireless transmission, easy for installation flexibly, be not subject to switch cabinet structure and spacial influence;
Five, good environmental adaptability, temperature sensor has just compensated the deviation in sensor production process afterwards by the correction of adapting software, and sensor can the temperature in any operating temperature range be debugged, and not affected by seasonal factor.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention will be further described in detail:
Fig. 1 is electrical block diagram of the present invention;
Fig. 2 is the structural representation of passive wireless temperature sensor in the present invention;
In figure: 1 is that transregional master station computing machine, 2 is that Surveillance center's computing machine, 3 is that bus gateway, 4 is that Temperature sampler, 5 is that passive wireless temperature sensor, 6 is that collector antenna, 7 is that interdigital transducer, 8 is that reflecting grating, 9 is that piezoelectric substrate, 10 is sensor antenna.
Embodiment
As shown in Figure 1, substation equipment contact temperature on-Line Monitor Device of the present invention, comprise be arranged on transregional master station transregional master station computing machine 1, be arranged on supervisory control of substation center Surveillance center's computing machine 2, be arranged on switchgear building bus gateway 3, be arranged on the Temperature sampler 4 on switch cubicle and be arranged on the passive wireless temperature sensor 5 on detected element surface.
Described transregional master station computing machine 1 is connected with a plurality of Surveillance center computing machine 2, described Surveillance center computing machine 2 is connected with a plurality of bus gateways 3, described bus gateway 3 is connected with a plurality of Temperature samplers 4 by communication bus, described Temperature sampler 4 is connected with a plurality of passive wireless temperature sensors 5 by radio frequency network, and described passive wireless temperature sensor 5 adopts SAW Temperature Sensors; Described Temperature sampler 4 is connected with collector antenna 6, Temperature sampler 4 transmits and receives radio frequency signal by collector antenna 6, described Temperature sampler 4 is arranged on switch cubicle outside, described collector antenna 6 is arranged on inside switch cabinet, and described communication bus comprises: RS485 bus, CAN bus and RS232 bus.
The present invention can realize the passive and wireless remote monitoring of switch cabinet of converting station contact temperature, forms three-dimensional real-time remote monitoring system, can meet the temperature detection of various switch cubicle equipment, and whole apparatus structure is succinct, easy to install.
As shown in Figure 2, described passive wireless temperature sensor 5 includes: interdigital transducer 7, reflecting grating 8 and piezoelectric substrate 9, described interdigital transducer 7 and reflecting grating 8 are arranged on piezoelectric substrate 9, described passive wireless temperature sensor 5 also includes sensor antenna 10, and described sensor antenna 10 is electrically connected to above-mentioned interdigital transducer 7.
Described passive wireless temperature sensor 5 is divided into tuning-fork-type sensor, mosaic sensor and binding type sensor, be useful in respectively different environment, tuning-fork-type sensor uses screw to be fixed on object under test surface, mosaic sensor utilizes its metal ring carrying to be fixed on the surface of circular object under test, and binding type sensor uses band to fix.
Described passive wireless temperature sensor 5 is the temperature elements that are directly installed on testee surface, it is responsible for receiving and inquires after radiofrequency signal, and the radiofrequency signal of returning with temperature information arrives Temperature sampler 4, passive wireless temperature sensor 5 is to adopt the design of surface acoustic wave (Surface Acoustic Wave) sensing technology, sensor surface wave technology has been applied the physical characteristics of crystalline material, the change of the physical characteristics of crystal has been changed into electric signal automatically by piezoelectricity principle of induction, the principle of work of sensor is the surface to piezoelectric by emission of radio frequency signals, then the reflection wave that is subject to temperature and has affected is gone back to electric signal again and obtains temperature data.
Described Temperature sampler 4 is responsible for and one group of sensor communication, transmitting thermometric is inquired after radiofrequency signal to sensor, receive the return signal of temperature sensor, and resolve to temperature information and send it back temperature monitoring Master Station Software system, collector antenna 6 is embedded in switch cubicle inwall, like this, can shield outside wave interference, other parts (receiving magazine) of Temperature sampler 4 are arranged on the outside of switch cubicle, collector antenna 6 is adsorbed on cabinet wall by the gap with cabinet through dividing plate, Temperature sampler 4 is placed on top, this cabinet door can be opened without having a power failure, facilitate managerial personnel to operate.
Described Temperature sampler 4 is by independent Power supply, and launch short radiofrequency signal in switch cubicle, if the frequency of the radio-frequency pulse frequency default with temperature sensor is identical, sensor just can be received this radiofrequency signal, and change and reflected impulse signal passively, the pulse signal returning is owing to being subject to the impact of sensor self temperature thereby having carried the temperature information of sensor.
Described Surveillance center computing machine 2 mainly completes the storage of sensor, collector file administration, setting parameter, temperature data and the data-interface with automated system is provided.
The application software major function of described transregional master station computing machine 1 comprises each temperature sensor equipment, temperature monitoring parameters arranges, the Remote Acquisitioning of temperature information, comprehensive inquiry analysis and temperature prediction alarm etc., according to actual conditions, there is (temperature information is accessed to power automatic system by standard data interface) in the functional module that these application functions can be used as power automatic system, also can be separately as the main station system of a set of temperature monitoring, all kinds of operational management personnel are by remote access watch-dog contact temperature situation promptly and accurately.
One, various temperature monitoring mode; The automatic acquisition tasks of default, regularly according to set sample frequency, carry out the collection of device temperature information, temperature data is kept in database, user is can setting-up time interval, specify monitored object to carry out the inquiry of historical temperature information, meanwhile, user can specify a certain concrete switch cubicle or sensor to carry out real-time temperature information collection in main station system.
Two, complete alarming mechanism; When the absolute value of switch cabinet temperature or the rate of change of temperature surpass the upper limit, system provides the warning information of the various ways such as sound, photoelectricity, note for operational management personnel, in time or the discovery of foreseeability and fixing a breakdown, thus ensure to greatest extent the safe and stable operation of power equipment.
Three, perfect system parameter setting; Set up switch cabinet temperature monitors at different levels and supervising the network, the various kinds of equipment archives such as the equipment that management temperature monitoring is relevant, sensor, collector, assigned switch cabinet or a concrete temperature sensor carry out the long-range of parameter and issue, and comprise that sensor temperature calibration, all kinds of early warning value, time, temperature acquisition frequency, sensor emission power, signal accept thresholding etc.
Four, abundant data exhibiting; On monitored object, one group of sensor that system both can have been selected a switch cubicle carries out the monitoring of temperature information, also can specify a plurality of switch cabinet temperature information in a region (Ru Yigetai district, a circuit) to monitor, for historical temperature information, system provides the multiple ways of presentation such as list, curve, facilitates user to check.
Five, Fault diagnosis and forecast; System provides device temperature and the means such as Real-time Load contrasts, temperature anomaly situation is carried out to fault eliminating, according to existing temperature data and Changing Pattern thereof, according to set prediction algorithm, provide temperature prediction result for user, and predicted value and early warning value are compared, find that there is the abnormal temperature warning information that sends when possible.
Six, powerful statistical study; System generates all kinds of statistical report forms automatically according to historical temperature data, and as carried out temperature anomaly situation statistics by region, electric pressure, unit type etc., all kinds of statistical report forms and KPI can issue by system door.
By reference to the accompanying drawings embodiments of the invention are explained in detail above, but the present invention is not limited to above-described embodiment, in the ken possessing those of ordinary skills, can also under the prerequisite that does not depart from aim of the present invention, makes a variety of changes.
Claims (7)
1. substation equipment contact temperature on-Line Monitor Device, it is characterized in that: comprise the transregional master station computing machine (1) that is arranged on transregional master station, be arranged on Surveillance center's computing machine (2) at supervisory control of substation center, be arranged on the bus gateway (3) of switchgear building, be arranged on the Temperature sampler (4) on switch cubicle and be arranged on the passive wireless temperature sensor (5) on detected element surface;
Described transregional master station computing machine (1) is connected with a plurality of Surveillance center computing machines (2), described Surveillance center computing machine (2) is connected with a plurality of bus gateways (3), described bus gateway (3) is connected with a plurality of Temperature samplers (4) by communication bus, described Temperature sampler (4) is connected with a plurality of passive wireless temperature sensors (5) by radio frequency network, and described passive wireless temperature sensor (5) adopts SAW Temperature Sensors.
2. substation equipment contact temperature on-Line Monitor Device according to claim 1, it is characterized in that: described Temperature sampler (4) is connected with collector antenna (6), Temperature sampler (4) transmits and receives radio frequency signal by collector antenna (6).
3. substation equipment contact temperature on-Line Monitor Device according to claim 2, is characterized in that: described Temperature sampler (4) is arranged on switch cubicle outside, and described collector antenna (6) is arranged on inside switch cabinet.
4. according to the substation equipment contact temperature on-Line Monitor Device described in the arbitrary claim of claims 1 to 3, it is characterized in that: described passive wireless temperature sensor (5) includes: interdigital transducer (7), reflecting grating (8) and piezoelectric substrate (9), described interdigital transducer (7) and reflecting grating (8) are arranged on piezoelectric substrate (9).
5. substation equipment contact temperature on-Line Monitor Device according to claim 4, it is characterized in that: described passive wireless temperature sensor (5) also includes sensor antenna (10), described sensor antenna (10) is electrically connected to above-mentioned interdigital transducer (7).
6. substation equipment contact temperature on-Line Monitor Device according to claim 5, is characterized in that: described passive wireless temperature sensor (5) is divided into: tuning-fork-type sensor, mosaic sensor and binding type sensor.
7. substation equipment contact temperature on-Line Monitor Device according to claim 5, is characterized in that: described communication bus comprises: RS485 bus, CAN bus and RS232 bus.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106644138A (en) * | 2016-11-08 | 2017-05-10 | 四川瑞霆电力科技有限公司 | Circuit breaker moving contact passive wireless acquisition device and temperature measurement monitoring system |
| CN106683387A (en) * | 2016-12-10 | 2017-05-17 | 杭州鸿雁智能科技有限公司 | Passive sensing device and passive type wireless sensing system |
| CN107144362A (en) * | 2017-06-09 | 2017-09-08 | 合肥远见电力科技有限公司 | A kind of intelligent radio temp measuring system |
| CN107422256A (en) * | 2017-07-03 | 2017-12-01 | 三峡大学 | A kind of temperature rise estimating and measuring method of high-voltage switch electric appliance contact void contact heating |
| CN109186779A (en) * | 2018-10-13 | 2019-01-11 | 国家电网有限公司 | A kind of substation equipment temperature monitoring warning system |
| CN110312400A (en) * | 2019-07-27 | 2019-10-08 | 扆亮海 | A kind of equipment enclosure and network monitoring system of dedusting protection against rodents |
| CN112327723A (en) * | 2020-11-26 | 2021-02-05 | 安徽东方旭电气设备有限公司 | Central circuit breaker control system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106644138A (en) * | 2016-11-08 | 2017-05-10 | 四川瑞霆电力科技有限公司 | Circuit breaker moving contact passive wireless acquisition device and temperature measurement monitoring system |
| CN106683387A (en) * | 2016-12-10 | 2017-05-17 | 杭州鸿雁智能科技有限公司 | Passive sensing device and passive type wireless sensing system |
| CN107144362A (en) * | 2017-06-09 | 2017-09-08 | 合肥远见电力科技有限公司 | A kind of intelligent radio temp measuring system |
| CN107422256A (en) * | 2017-07-03 | 2017-12-01 | 三峡大学 | A kind of temperature rise estimating and measuring method of high-voltage switch electric appliance contact void contact heating |
| CN109186779A (en) * | 2018-10-13 | 2019-01-11 | 国家电网有限公司 | A kind of substation equipment temperature monitoring warning system |
| CN110312400A (en) * | 2019-07-27 | 2019-10-08 | 扆亮海 | A kind of equipment enclosure and network monitoring system of dedusting protection against rodents |
| CN112327723A (en) * | 2020-11-26 | 2021-02-05 | 安徽东方旭电气设备有限公司 | Central circuit breaker control system |
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Application publication date: 20140205 |