CN201667558U - On-line monitoring device for outdoor high-voltage switch temperature - Google Patents
On-line monitoring device for outdoor high-voltage switch temperature Download PDFInfo
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- CN201667558U CN201667558U CN2010201358694U CN201020135869U CN201667558U CN 201667558 U CN201667558 U CN 201667558U CN 2010201358694 U CN2010201358694 U CN 2010201358694U CN 201020135869 U CN201020135869 U CN 201020135869U CN 201667558 U CN201667558 U CN 201667558U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
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Abstract
The utility model discloses an on-line monitoring device for outdoor high-voltage switch temperature. The device consists of a data monitoring center, a liquid crystal display instrument and a temperature acquisition module, wherein the data monitoring center is connected with the liquid crystal display instrument through a 485 bus; the liquid crystal display instrument is connected to the temperature acquisition module in a wireless communication mode; and the temperature acquisition module is directly connected with a temperature measurement point. The device has the advantages of simple structural design, convenient wiring, capability of reducing the cost, real-time monitoring of the temperature, no need of personnel and equipment, cost saving, solution of high-voltage insulating problem in a wireless signal transmission mode, more safety, high measurement precision, convenient installation, and capability of saving energy by supplying power supply to the temperature acquisition module through an induction coil.
Description
Technical field
The utility model 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.
Background technology
In electric power system, isolating switch is widely used in electric line, the connection of power plant substation bus bar, and it can make the electrical network partition running, again can the isolated fault easy access.In electricity operation was sent in line outage, isolating switch was uniquely can be seen trip point, the tie point of being convenient to confirm by clear.
Isolating switch is by moving contact, fixed contact and twoly save blade and form.Because the isolating switch long term exposure out of doors, aging, spring fatigue corrosion causes factors such as contact point pressure reduces, thereby contact resistance is increased, and temperature rises, and finally burns out switch.Therefore the temperature monitoring to isolating switch becomes a requisite measure that guarantees electric power netting safe running.
Because monitored target is under high potential and the high-intensity magnetic field, it is very difficult continuing to use common temp measuring method.Associated companies has just proposed the whole bag of tricks of electric power system thermometric as far back as the nineties both at home and abroad.
(1) common thermometric: thermometric modes such as conventional thermocouple, thermal resistance, semiconductor temperature sensor, need the plain conductor transmission signals, insulation property can not guarantee.
(2) infrared measurement of temperature: mainly be to utilize principle of infrared radiation, comprise total radiation thermometric, monochromatic thermometric, color comparison temperature measurement etc.Infrared temperature-test technology has advantages such as precision height, response is fast, measuring range is big.At present, infrared temperature-test technology is ripe relatively, and application product is also many.But infrared thermoviewer can't see through the cabinet door and measure internal unit, must close the cabinet door during switch cubicle operation, causes infrared mode to measure.
(3) optical fiber temperature-measurement: optical fiber type temperature temperature measurer adopts optical fiber to transmit signal, and its temperature sensor is installed in the surface of charged object, is connected with optical fiber between temperature measurer and temperature sensor.The optical fiber temperature-measurement technology has excellent electric insulating, be not subjected to the interference of electromagnetic field, be specially adapted in the adverse circumstances such as high voltage, big electric current, high-intensity magnetic field noise, intense radiation, also have high sensitivity, high accuracy, characteristics such as high-speed, but optical fiber is easy to break, easily broken, non-refractory.Accumulation easily makes behind the dust insulating properties reduce, and optical fiber technology has relatively high expectations, the system configuration complexity, and the wiring difficulty is bigger, and cost is higher.
Traditional monitoring method is periodically isolating switch to be carried out temperature monitoring and record, need employ personnel and equipment, and regular detection that can only discontinuity, exists many defectives.
The utility model content
The purpose of this utility model is, at existing monitoring method above shortcomings, 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 isolating switch temperature, can monitor the temperature of each isolating switch contact and preservation automatically in real time, the overheated aging conditions of discovering device, the temperature of equipment is carried out effectively monitoring in real time and warning, according to the temperature threshold of setting, when overtemperature, report to the police automatically, remind the staff to overhaul, so that in time take preventive measures, reduce and avoid equipment fault, ensure the normal stable operation of high voltage electric power equip ment.
In order to reach above-mentioned purpose of design, the technical solution adopted in the utility model is as follows:
A kind of outdoor high-voltage switch temperature on-line monitoring device, comprise data monitor center, liquid crystal display instrument and temperature collect module, described data monitor center connects the liquid crystal display instrument by 485 buses, the liquid crystal display instrument is by wireless communication mode cut-in temperature acquisition module, described temperature collect module directly and point for measuring temperature join, gather the temperature of tested device in real time by temperature collect module.
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, inserts liquid crystal display LCD, RS485 interface, passive alarm module and radio transmitting and receiving chip on the arm processor respectively; 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 inserts by the RS485 interface behind 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 induction coil, reversible connection radio transmitting and receiving chip, battery and induction coil on the MSP430 microprocessor, battery and induction coil provide power supply for temperature collect module, unidirectional cut-in temperature transducer on the described MSP430 microprocessor, be delivered to the MSP430 microprocessor after the temperature of temperature sensor collection point for measuring temperature, carry out wireless transmission by radio transmitting and receiving chip after the MSP430 microprocessor processes.
The beneficial effect of outdoor high-voltage switch temperature on-line monitoring device described in the utility model is: structural design is simple, and wiring is convenient, can reduce cost; Can realize in real time temperature being monitored, need not to employ personnel and equipment, save cost; Adopt the transmission of wireless signals mode, temperature collect module is installed in the surface of high potential part, and does not have electrical link between the electronegative potential receiving equipment, has fundamentally solved the High-Voltage Insulation problem, and is safer, and the certainty of measurement height is easy for installation; Provide power supply by induction coil for temperature collect module, save the energy.
Description of drawings
Fig. 1 is the structural representation of the described outdoor high-voltage switch temperature on-line monitoring device of the utility model embodiment;
Fig. 2 is the structure chart of the liquid crystal display instrument of the described outdoor high-voltage switch temperature on-line monitoring device of the utility model embodiment;
Fig. 3 is the schematic diagram of the temperature collect module of the described outdoor high-voltage switch temperature on-line monitoring device of the utility model embodiment;
Fig. 4 is the circuit diagram of the temperature collect module of the described outdoor high-voltage switch temperature on-line monitoring device of the utility model embodiment;
Fig. 5 is the circuit diagram of the induction coil of the described outdoor high-voltage switch temperature on-line monitoring device of the utility model embodiment.
Among the 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, induction coil.
Specific implementation method
As shown in Figure 1, the described outdoor high-voltage switch temperature on-line monitoring device of the utility model embodiment, form by 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, described temperature collect module 3 directly and point for measuring temperature join; In the use, gather the temperature signal of point for measuring temperature by temperature collect module 3, and with temperature signal handle the back be delivered to liquid crystal display instrument 2 by wireless transmission method, finally after liquid crystal display instrument 2 is handled, send to data monitor center 1, thereby realized temperature monitoring point for measuring temperature by 485 buses.
Described data monitor center 1 establishes huge database as the MC centre of system, provides sufficient memory space, guarantees the real-time monitoring of measuring point temperature, is responsible for the data of each monitoring point are handled, preserved and analyze; Possess perfect event message and handle, can carry out literal and phonic warning, and can preserve data; Can inquire about, delete historical data and the curve plotting operation; Data monitor center also can link to each other with Internet, makes things convenient for user inquiring.
Described liquid crystal display instrument 2 can enlarge the regional extent of measuring point on the one hand as the terminal of data, on the other hand measuring point data is concentrated forwarding, alleviates the workload of upper layer data Surveillance center; Liquid crystal display instrument 2 effectively can managed 256 temperature collect modules in the wireless receiving scope simultaneously.
Described temperature collect module 3 and tested device are joined, and adopt intelligent low-power consumption microprocessor as core, by wireless network and 2 communications of liquid crystal display instrument, gather the temperature of tested device in real time, and communication distance is greater than 300m.
The described temperature collect module 3 that has transducer is installed in the surface of high potential part, and does not have electrical link between the electronegative potential receiving equipment (liquid crystal display instrument 2), has fundamentally solved the High-Voltage Insulation problem, and the certainty of measurement height is easy for installation.
As shown in Figure 2, described liquid crystal display instrument 2 is made up of arm processor 4, liquid crystal display LCD5, RS485 interface 6, passive alarm module 7 and radio transmitting and receiving chip 8, the reversible access liquid crystal display LCD5 of difference, RS485 interface 6, passive alarm module 7 and radio transmitting and receiving chip 8 on the 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 show temperature signal information in the arm processor 4 by liquid crystal display LCD5, temperature signal 485 buses by 6 accesses of RS485 interface through arm processor 4 after are delivered to data monitor center 1 and carry out monitoring temperature; Can report to the police by passive alarm module 7 when unusual appears in the temperature signal that receives when arm processor 4.
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 induction coil 12 are formed, reversible connection radio transmitting and receiving chip 8 on the MSP430 microprocessor 9, battery 11 and induction coil 12, battery 11 and induction coil 12 provide the power supply of different modes for temperature collect module 3, satisfy user's different demands, unidirectional cut-in temperature transducer 10 on the described MSP430 microprocessor 9, be delivered to MSP430 microprocessor 9 after the temperature of temperature sensor 10 collection points for measuring temperature, MSP430 microprocessor 9 is handled the back and is carried out wireless transmission by radio transmitting and receiving chip 8.
As shown in Figure 4, temperature sensor 10 adopts accurate analog temperature sensor PT100, and the temperature-sensitive wide ranges is fit to outdoor use, and circuit adopts TL431 and potentiometer VR1 to regulate the reference power source that produces 4.096V; Adopt R1, R2, VR2, Pt100 to constitute measuring bridge (R1=R2 wherein, VR2 is 100 Ω precision resistances), when the resistance value of the resistance value of Pt100 and VR2 is unequal, the pressure difference signal of a mV level of electric bridge output, this pressure difference signal amplifies the voltage signal of back output expectation size through amplifier LM324, and this signal can directly connect the AD conversion chip; R3=R4, R5=R6, multiplication factor=R5/R3 in the differential amplifier circuit.
As shown in Figure 5, I is a primary side current; T is induction power taking coil; D1 is a TVS pipe, plays the surge protective effect, prevents from that primary side current is excessive the secondary side circuit is caused damage; D2 is a rectifier bridge; D3 is a voltage stabilizing didoe; C1, C2 are filtering capacitor; U1 is the low difference voltage regulator chip; U is the output supply power voltage; After inducing the energy of interchange by coil from high-tension cable, need through direct current regulation circuit the AC energy of responding to be converted to the required energy of measurement mechanism, D.C. regulated power supply is made up of rectifier transformer, rectification circuit, filter circuit and voltage stabilizing circuit four parts.
Described induction coil 12 utilizes the current transformer principle, therefrom take out electric energy on the high-tension apparatus and be the power supply of rear end temperature measuring equipment, utilize the magnetic bobbin core magnetic saturation characteristic, promptly choose the permeability of the sectional area and the ferromagnetic material of suitable current transformer iron core, make the normal excitation of its energy when little electric current flows through, and when big electric current passed through, magnetic bobbin core entered the magnetic saturation state, makes it provide comparatively stable working power to the temperature acquisition terminal.
In the described magnetic core design many Performance Influence Factor are arranged, as shape, activity coefficient, pile pieces coefficient, technological coefficient, temperature coefficient and the loss etc. of magnetic core; And in the coiling of secondary, also there are the influencing factors such as material, current density, arrangement mode, impedance, loss and temperature effect of lead; And in coil and coiling making thereof, there are some subtle differences and various defective unavoidably.Considering that voltage distorts to some extent when saturated when coil is in, and the technological problems of magnetic core, coiling etc., when coiling, should adjust according to actual conditions.
This specific implementation method is a preferred embodiment of the present utility model, can not limit the utility model, and concrete every right is defined by the claims.
Claims (3)
1. outdoor high-voltage switch temperature on-line monitoring device, it is characterized in that: form by data monitor center, liquid crystal display instrument and temperature collect module, described data monitor center connects the liquid crystal display instrument by 485 buses, the liquid crystal display instrument is by wireless communication mode cut-in temperature acquisition module, described temperature collect module directly and point for measuring temperature join.
2. outdoor high-voltage switch temperature on-line monitoring device according to claim 1, it is characterized in that: 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, the reversible access liquid crystal display LCD of difference, RS485 interface, passive alarm module and radio transmitting and receiving chip on the arm processor.
3. outdoor high-voltage switch temperature on-line monitoring device according to claim 1, it is characterized in that: described temperature collect module is made up of radio transmitting and receiving chip, MSP430 microprocessor, temperature sensor, battery and induction coil, reversible connection radio transmitting and receiving chip, battery and induction coil on the MSP430 microprocessor, unidirectional cut-in temperature transducer on the described MSP430 microprocessor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201358694U CN201667558U (en) | 2010-03-19 | 2010-03-19 | On-line monitoring device for outdoor high-voltage switch temperature |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201358694U CN201667558U (en) | 2010-03-19 | 2010-03-19 | On-line monitoring device for outdoor high-voltage switch temperature |
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| CN201667558U true CN201667558U (en) | 2010-12-08 |
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| CN2010201358694U Expired - Fee Related CN201667558U (en) | 2010-03-19 | 2010-03-19 | On-line monitoring device for outdoor high-voltage switch temperature |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102437646A (en) * | 2011-10-25 | 2012-05-02 | 江苏省电力公司连云港供电公司 | Wireless temperature and humidity monitoring device for high-voltage switch cabinet |
| CN102519626A (en) * | 2011-12-09 | 2012-06-27 | 沈阳工业大学 | Novel temperature measuring device for switch cabinet |
| CN102759409A (en) * | 2012-07-07 | 2012-10-31 | 嵊州市电力公司 | Online monitoring device for temperature of contact arms of high-voltage circuit breaker of 10-KV high-current switch cabinet |
| CN102818590A (en) * | 2012-07-29 | 2012-12-12 | 江苏大学 | Wireless sensor network-based transmission lines icing on-line monitoring system |
| CN102818589A (en) * | 2011-06-09 | 2012-12-12 | 上海市电力公司 | Monitoring control system of cable branch box |
| CN103218903A (en) * | 2013-03-14 | 2013-07-24 | 广西电网公司电力科学研究院 | Extreme low-power high voltage switch board wireless temperature measurement transmitting-receiving sub-node system |
| CN103411692A (en) * | 2013-08-09 | 2013-11-27 | 南京大全自动化科技有限公司 | Temperature measuring device for circuit breaker contact |
-
2010
- 2010-03-19 CN CN2010201358694U patent/CN201667558U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102818589A (en) * | 2011-06-09 | 2012-12-12 | 上海市电力公司 | Monitoring control system of cable branch box |
| CN102437646A (en) * | 2011-10-25 | 2012-05-02 | 江苏省电力公司连云港供电公司 | Wireless temperature and humidity monitoring device for high-voltage switch cabinet |
| CN102519626A (en) * | 2011-12-09 | 2012-06-27 | 沈阳工业大学 | Novel temperature measuring device for switch cabinet |
| CN102759409A (en) * | 2012-07-07 | 2012-10-31 | 嵊州市电力公司 | Online monitoring device for temperature of contact arms of high-voltage circuit breaker of 10-KV high-current switch cabinet |
| CN102818590A (en) * | 2012-07-29 | 2012-12-12 | 江苏大学 | Wireless sensor network-based transmission lines icing on-line monitoring system |
| CN103218903A (en) * | 2013-03-14 | 2013-07-24 | 广西电网公司电力科学研究院 | Extreme low-power high voltage switch board wireless temperature measurement transmitting-receiving sub-node system |
| CN103411692A (en) * | 2013-08-09 | 2013-11-27 | 南京大全自动化科技有限公司 | Temperature measuring device for circuit breaker contact |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101208 Termination date: 20110319 |