CN104236741A - Temperature monitoring device and implementation method for outdoor high-pressure switch - Google Patents
Temperature monitoring device and implementation method for outdoor high-pressure switch Download PDFInfo
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- CN104236741A CN104236741A CN201410472031.7A CN201410472031A CN104236741A CN 104236741 A CN104236741 A CN 104236741A CN 201410472031 A CN201410472031 A CN 201410472031A CN 104236741 A CN104236741 A CN 104236741A
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Abstract
The invention discloses a temperature monitoring device and an implementation method for an outdoor high-pressure switch. The temperature monitoring device is composed of a data monitoring center, a liquid crystal display instrument and a temperature collecting module. The data monitoring center is connected with the liquid crystal display instrument through a 485 bus, the liquid crystal display instrument is connected into the temperature collecting module in a wireless communication mode, and the temperature collecting module is directly connected with a temperature measuring mode. The implementation method includes the steps that the temperature collecting module collects the temperature of the temperature measuring point and transmits the temperature to the liquid crystal display instrument in a wireless mode through a wireless transceiving chip after the temperature is processed through an MSP430 microprocessor, the temperature is processed by an ARM processor in the liquid crystal display instrument and then transmitted to the data monitoring center through the 485 bus to be monitored, and a power source is provided for the temperature collecting module through a battery or an induction coil.
Description
Technical field
The present invention relates to high voltage electric power equip ment monitoring running state field, especially a kind of high voltage electric power equip ment temperature on-line monitoring device and implementation method.
Background technology
In electric system, disconnector is widely used in electric line, the connection of Power Plant Substation bus, and it can make electrical network partition running, again can isolated fault easy access.In the operation of line outage power transmission, disconnector uniquely can be seen by clear trip point, the tie point being convenient to confirm.
Disconnector is by moving contact, static contact and two save blade and form.Because disconnector is chronically exposed to open air, aging, spring fatigue corrosion causes the factors such as contact point pressure reduction, thus contact resistance is increased, and temperature rises, and finally burns out switch.Therefore the temperature monitoring of disconnector is become to the requisite measure ensureing electric power netting safe running.
Under monitored target is in noble potential and high-intensity magnetic field, it is very difficult for continuing to use common temp measuring method.The method of the electric system thermometric that domestic and international associated companies has proposed has:
(1) common thermometric: the conventional thermometric mode such as thermopair, thermal resistance, semiconductor temperature sensor, need plain conductor signal transmission, insulating property can not ensure.
(2) infrared measurement of temperature: mainly utilize principle of infrared radiation, comprises total radiation thermometric, monochromatic thermometric, color comparison temperature measurement etc.Infrared temperature-test technology has the advantages such as precision is high, response is fast, measurement range is large.At present, infrared temperature-test technology is relative maturity, and application product is also many.But infrared thermoviewer cannot measure internal unit through cabinet door, must close cabinet door, cause infrared mode to measure when switch cubicle runs.
(3) optical fiber temperature-measurement: optical fiber type temperature temperature measurer adopts optical fiber transmission of signal, and its temperature sensor is arranged on the surface of charged object, uses Fiber connection between temperature measurer and temperature sensor.Fiber Optic Pyrometer has good electrical insulating property, not by the interference of electromagnetic field, be specially adapted to, in the rugged surroundings such as high voltage, big current, high-intensity magnetic field noise, intense radiation, also to there is the features such as high sensitivity, high precision, high speed, but optical fiber is easy to break, easily broken, non-refractory.Easily make insulativity reduce after accumulation dust, and optical fiber technology requires higher, system architecture is complicated, and wiring difficulty is comparatively large, and cost is higher.
Traditional monitoring method periodically carries out temperature monitoring and record to disconnector, needs the personnel that employ and equipment, and can only the periodic detection of discontinuity, there is many defects.
Summary of the invention
The object of the invention is, for the above-mentioned deficiency of existing monitoring method, a kind of high voltage electric power equip ment temperature on-line monitoring device is provided, adopt advanced radio network technique and accurate temperature sensor on-line monitoring disconnector temperature, can each disconnector contact of Real-Time Monitoring temperature and automatically preserve, the overheated aging conditions of discovering device, effective Real-Time Monitoring and warning are carried out to the temperature of equipment, according to the temperature threshold of setting, when there being overtemperature, automatic alarm, staff is reminded to overhaul, to take preventive measures in time, reduce and avoid equipment failure, ensure that the normal table of high voltage electric power equip ment runs.
In order to reach above-mentioned purpose of design, the technical solution used in the present invention is as follows:
A kind of implementation method of temperature of outdoor high-voltage switch monitoring device, it is the temperature signal being gathered point for measuring temperature by temperature collect module, and be delivered to liquid crystal display instrument by wireless transmission method after being processed by temperature signal, finally after liquid crystal display apparatus list processing (LISP), be sent to data monitor center by 485 buses, thus achieve the temperature monitoring to point for measuring temperature; Described temperature collect module provides power supply by battery or inductive coil, when inductive coil provides power supply, to be induced the energy of interchange from high-tension cable by coil after, need, through D.C. regulated power supply, the AC energy of induction is converted to the energy needed for measurement mechanism, D.C. regulated power supply by rectifier transformer, rectification circuit, filtering circuit and mu balanced circuit four part form.
A kind of temperature of outdoor high-voltage switch monitoring device comprises data monitor center, liquid crystal display instrument and temperature collect module, described data monitor center connects liquid crystal display instrument by 485 buses, liquid crystal display instrument is by wireless communication mode cut-in temperature acquisition module, described temperature collect module directly connects with point for measuring temperature, by the temperature of temperature collect module Real-time Collection tested device.
Described liquid crystal display instrument is made up of arm processor, liquid crystal display LCD, RS485 interface, passive alarm module and radio transmitting and receiving chip, difference reversible access liquid crystal display LCD, RS485 interface, passive alarm module and radio transmitting and receiving chip on arm processor; Radio transmitting and receiving chip receives the wireless temperature signal that temperature collect module sends, and transfers signals to arm processor, and 485 buses that temperature signal is accessed by RS485 interface after arm processor are delivered to data monitor center and carry out monitoring temperature.
Described temperature collect module is made up of radio transmitting and receiving chip, MSP430 microprocessor, temperature sensor, battery and inductive coil, can reverse connection radio transmitting and receiving chip, battery and inductive coil on MSP430 microprocessor, battery and inductive coil provide power supply for temperature collect module, unidirectional cut-in temperature sensor on described MSP430 microprocessor, temperature sensor is delivered to MSP430 microprocessor after gathering the temperature of point for measuring temperature, carries out wireless transmission after MSP430 microprocessor processes by radio transmitting and receiving chip.
The beneficial effect of temperature of outdoor high-voltage switch monitoring device of the present invention is: structural design is simple, and wiring is convenient, can reduce costs; Can realize monitoring temperature in real time, without the need to employing personnel and equipment, cost-saving; Adopt transmission of wireless signals mode, temperature collect module is arranged on the surface of noble potential part, and without electrical link between electronegative potential receiving equipment, fundamentally solves High-Voltage Insulation problem, and safer, measuring accuracy is high, easy for installation; By inductive coil for temperature collect module provides power supply, save the energy.
Accompanying drawing explanation
Fig. 1 is the structural representation of the temperature of outdoor high-voltage switch monitoring device described in the embodiment of the present invention.
Fig. 2 is the structural drawing of the liquid crystal display instrument of temperature of outdoor high-voltage switch monitoring device described in the embodiment of the present invention.
Fig. 3 is the schematic diagram of the temperature collect module of temperature of outdoor high-voltage switch monitoring device described in the embodiment of the present invention.
Fig. 4 is the circuit diagram of the temperature collect module of temperature of outdoor high-voltage switch monitoring device described in the embodiment of the present invention.
Fig. 5 is the circuit diagram of the inductive coil of temperature of outdoor high-voltage switch monitoring device described in the embodiment of the present invention.
In figure: 1, data monitor center; 2, liquid crystal display instrument; 3, temperature collect module; 4, arm processor; 5, liquid crystal display LCD; 6, RS485 interface; 7, passive alarm module; 8, radio transmitting and receiving chip; 9, MSP430 microprocessor; 10, temperature sensor; 11, battery; 12, inductive coil.
Embodiment
As shown in Figure 1, temperature of outdoor high-voltage switch monitoring device described in the embodiment of the present invention, be made up of data monitor center 1, liquid crystal display instrument 2 and temperature collect module 3, described local data Surveillance center 1 connects liquid crystal display instrument 2 by 485 buses, liquid crystal display instrument 2 is by wireless communication mode cut-in temperature acquisition module 3, and described temperature collect module 3 directly connects with point for measuring temperature; In using, the temperature signal of point for measuring temperature is gathered by temperature collect module 3, and be delivered to liquid crystal display instrument 2 by wireless transmission method after being processed by temperature signal, finally after liquid crystal display instrument 2 processes, be sent to data monitor center 1 by 485 buses, thus achieve the temperature monitoring to point for measuring temperature.
Described data monitor center 1, as the MC centre of system, is set up and is had huge database, provides sufficient storage space, ensures the real-time monitoring of measuring point temperature, is responsible for processing the data of each monitoring point, preserve and analyzing; Possess perfect event message process, can word and phonic warning be carried out, and can preserve data; Can inquire about historical data, delete and curve plotting operation; Data monitor center also can be connected with Internet, facilitates user to inquire about.
Described liquid crystal display instrument 2, as the terminal of data, can expand the regional extent of measuring point on the one hand, carries out concentrating on the other hand forwarding measuring point data, alleviates the workload of upper layer data Surveillance center; Liquid crystal display instrument 2 can manage 256 temperature collect modules in effective wireless reception range simultaneously.
Described temperature collect module 3 and tested device connect, and adopt intelligent low-power microprocessor as core, and by wireless network and liquid crystal display instrument 2 communication, the temperature of Real-time Collection tested device, communication distance is greater than 300m.
The described temperature collect module 3 with sensor is arranged on the surface of noble potential part, and without electrical link between electronegative potential receiving equipment (liquid crystal display instrument 2), fundamentally solve High-Voltage Insulation problem, measuring accuracy is high, easy for installation.
As shown in Figure 2, described liquid crystal display instrument 2 is made up of arm processor 4, liquid crystal display LCD, RS485 interface 6, passive alarm module 7 and radio transmitting and receiving chip 8, difference reversible access liquid crystal display LCD, RS485 interface 6, passive alarm module 7 and radio transmitting and receiving chip 8 on arm processor 4; Radio transmitting and receiving chip 8 receives the wireless temperature signal that temperature collect module 3 sends, and transfer signals to arm processor 4, can be shown the temperature signal information in arm processor 4 by liquid crystal display LCD, 485 buses that temperature signal is accessed by RS485 interface 6 after arm processor 4 are delivered to data monitor center 1 and carry out monitoring temperature; Report to the police by passive alarm module 7 when the temperature signal that arm processor 4 receives occurs abnormal.
As shown in Figure 3, described temperature collect module 3 is by radio transmitting and receiving chip 8, MSP430 microprocessor 9, temperature sensor 10, battery 11 and inductive coil 12 form, can reverse connection radio transmitting and receiving chip 8 on MSP430 microprocessor 9, battery H and inductive coil 12, battery 11 and inductive coil 12 provide the power supply of different modes for temperature collect module 3, meet the different demands of user, unidirectional cut-in temperature sensor 10 on described MSP430 microprocessor 9, temperature sensor 10 is delivered to MSP430 microprocessor 9 after gathering the temperature of point for measuring temperature, MSP430 microprocessor 9 carries out wireless transmission by radio transmitting and receiving chip 8 after processing.
As shown in Figure 4, temperature sensor 10 adopts precision analog temperature sensor PT100, temperature-sensitive wide ranges, is applicable to outdoor use, and circuit adopts TL431 and potentiometer VR1 to regulate the reference power source producing 4.096V; R1, R2, VR2, Pt100 is adopted to form measuring bridge (wherein R1=R2, VR2 is 100 Ω precision resistances), when the resistance value of Pt100 and the resistance value of VR2 unequal time, electric bridge exports the pressure difference signal of a mV level, this pressure difference signal exports the voltage signal expecting size after amplifier LM324 amplifies, and this signal directly can connect AD conversion chip; R3=R4, R5=R6, enlargement factor=R5/R3 in differential amplifier circuit.
As shown in Figure 5, I is primary side current; T is induction electricity taking coil; D1 is TVS pipe, plays surge protective effect, prevents that primary side current is excessive to cause damage to secondary side circuit; D2 is rectifier bridge; D3 is voltage stabilizing diode; C1, C2 are filter capacitor; U1 is low difference voltage regulator chip; U is for exporting supply voltage; To be induced the energy of interchange from high-tension cable by coil after, need, through D.C. regulated power supply, the AC energy of induction is converted to the energy needed for measurement mechanism, D.C. regulated power supply by rectifier transformer, rectification circuit, filtering circuit and mu balanced circuit four part form.
Described inductive coil 12 utilizes current transformer principle, therefrom high-tension apparatus taking out electric energy is that rear end temperature measuring equipment is powered, utilize magnetic bobbin core magnetic saturation characteristic, namely the sectional area of suitable current transformer iron core and the magnetoconductivity of ferromagnetic material is chosen, make the normal excitation of its energy when small area analysis flows through, and when big current passes through, magnetic bobbin core enters magnetic saturation state, can provide comparatively stable working power to temperature acquisition terminal.
Many Performance Influence Factor are had, as the shape of magnetic core, activity coefficient, pile pieces coefficient, technological coefficient, temperature coefficient and loss etc. in the design of described magnetic core; And in the coiling of secondary, also there is the material of wire, current density, arrangement mode, impedance, the influence factor such as loss and temperature effect; And some subtle differences and various defect is there is unavoidably in coil and coiling thereof make.Consider that voltage distorts to some extent when coil is in saturated, and magnetic core, coiling technological problems etc., should adjust according to actual conditions when coiling.
This specific implementation method is the preferred embodiments of the present invention, can not limit the present invention, and concrete every right is defined by the claims.
Claims (5)
1. the implementation method of the device for detecting temperature of an outdoor high-voltage switch, it is characterized in that, by temperature collect module gather point for measuring temperature temperature and after MSP430 microprocessor processes, be wirelessly transmitted to liquid crystal display instrument by radio transmitting and receiving chip, after the arm processor process in liquid crystal display instrument, be delivered to data monitor center by 485 buses carry out temperature monitoring; Described temperature collect module provides power supply by battery or inductive coil.
2. the implementation method of the device for detecting temperature of outdoor high-voltage switch according to claim 1, it is characterized in that, when inductive coil provides power supply, to be induced the energy of interchange from high-tension cable by coil after, AC energy through D.C. regulated power supply induction is converted to energy needed for measurement mechanism, and D.C. regulated power supply is made up of rectifier transformer, rectification circuit, filter circuit and mu balanced circuit.
3. the device for detecting temperature of an outdoor high-voltage switch, it is characterized in that, be made up of data monitor center, liquid crystal display watch and temperature collect module, described data monitor center connects liquid crystal display instrument by 485 buses, liquid crystal display watch is by wireless communication mode cut-in temperature acquisition module, and described temperature collect module directly connects with point for measuring temperature.
4. the device for detecting temperature of outdoor high-voltage switch according to claim 3, it is characterized in that, described liquid Displaying Meter is made up of arm processor, liquid crystal display LCD, RS485 interface, passive alarm module and radio transmitting and receiving chip, difference reversible access liquid crystal display LCD, RS485 interface, passive alarm module and radio transmitting and receiving chip on A processor.
5. the device for detecting temperature of outdoor high-voltage switch according to claim 3, it is characterized in that, described temperature collect module is made up of radio transmitting and receiving chip, MSP430 microprocessor, temperature sensor, battery and inductive coil, can reverse connection radio transmitting and receiving chip, battery and inductive coil on the micro-reason device of MSP430, unidirectional cut-in temperature sensor on described MSP430 microprocessor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410472031.7A CN104236741A (en) | 2014-09-16 | 2014-09-16 | Temperature monitoring device and implementation method for outdoor high-pressure switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410472031.7A CN104236741A (en) | 2014-09-16 | 2014-09-16 | Temperature monitoring device and implementation method for outdoor high-pressure switch |
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| CN104236741A true CN104236741A (en) | 2014-12-24 |
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| CN201410472031.7A Withdrawn CN104236741A (en) | 2014-09-16 | 2014-09-16 | Temperature monitoring device and implementation method for outdoor high-pressure switch |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106568523A (en) * | 2016-11-10 | 2017-04-19 | 中国电力科学研究院 | Wireless temperature measuring system for high-voltage isolating switch |
| CN107179138A (en) * | 2017-06-23 | 2017-09-19 | 贵州电网有限责任公司电力科学研究院 | A kind of high-tension electricity device temperature on-line monitoring system based on MSP430 single-chip microcomputers |
| CN110499790A (en) * | 2019-07-26 | 2019-11-26 | 国网辽宁省电力有限公司鞍山供电公司 | A kind of detection device of winter iron tower foundation construction concrete critical intensity |
| CN117665400A (en) * | 2023-12-05 | 2024-03-08 | 安徽农业大学 | Switch contact resistance online detection system and method based on temperature detection |
-
2014
- 2014-09-16 CN CN201410472031.7A patent/CN104236741A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106568523A (en) * | 2016-11-10 | 2017-04-19 | 中国电力科学研究院 | Wireless temperature measuring system for high-voltage isolating switch |
| CN107179138A (en) * | 2017-06-23 | 2017-09-19 | 贵州电网有限责任公司电力科学研究院 | A kind of high-tension electricity device temperature on-line monitoring system based on MSP430 single-chip microcomputers |
| CN110499790A (en) * | 2019-07-26 | 2019-11-26 | 国网辽宁省电力有限公司鞍山供电公司 | A kind of detection device of winter iron tower foundation construction concrete critical intensity |
| CN117665400A (en) * | 2023-12-05 | 2024-03-08 | 安徽农业大学 | Switch contact resistance online detection system and method based on temperature detection |
| CN117665400B (en) * | 2023-12-05 | 2024-05-24 | 安徽农业大学 | Switch contact resistance online detection system and method based on temperature detection |
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Application publication date: 20141224 |