CN102305667A - Device for monitoring temperature of outdoor high-voltage switch through bus and implementation method of device - Google Patents
Device for monitoring temperature of outdoor high-voltage switch through bus and implementation method of device Download PDFInfo
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- CN102305667A CN102305667A CN2010101280425A CN201010128042A CN102305667A CN 102305667 A CN102305667 A CN 102305667A CN 2010101280425 A CN2010101280425 A CN 2010101280425A CN 201010128042 A CN201010128042 A CN 201010128042A CN 102305667 A CN102305667 A CN 102305667A
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Abstract
The invention discloses a device for monitoring the temperature of an outdoor high-voltage switch through a bus. The device for monitoring the temperature of the outdoor high-voltage switch through the bus 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 accessed to the temperature acquisition module in a wireless communication way; and the temperature acquisition module is directly connected with a temperature measuring point. An implementation method for the device for monitoring the temperature of the outdoor high-voltage switch through the bus comprises the following steps of: acquiring the temperature of the temperature measuring point by the temperature acquisition module, processing by a mixed signal processing (MSP430) microprocessor, transmitting to the liquid crystal display instrument by a wireless transceiving chip in a wireless way, processing by an advanced RISC microprocessor (ARM) in the liquid crystal display instrument and transmitting to the data monitoring center for temperature monitoring by the 485 bus. The temperature acquisition module is powered by 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 generating 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, disconnector was uniquely can be seen trip point, the tie point of being convenient to confirm by clear.
Disconnector is by moving contact, static contact and twoly save blade and form.Because the disconnector 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 disconnector becomes a requisite measure that guarantees electric power netting safe running.
Because monitored target is under noble 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 system thermometric as far back as the nineties both at home and abroad.
(1) common thermometric: thermometric modes such as conventional thermopair, thermal resistance, semiconductor temperature sensor, need the plain conductor transmission signals, insulating 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, measurement 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; Do not receive the interference of electromagnetic field, be specially adapted in the rugged surroundings such as high voltage, big electric current, high-intensity magnetic field noise, intense radiation, also have high sensitivity, high precision, characteristics such as high-speed; But optical fiber is easy to break, easily broken, non-refractory.Accumulation is prone to make behind the dust insulativity to reduce, and optical fiber technology has relatively high expectations, and system architecture is complicated, and the wiring difficulty is bigger, and cost is higher.
Traditional monitoring method is periodically disconnector to be carried out temperature monitoring and record, need employ personnel and equipment, and regular detection that can only discontinuity, exists many defectives.
Summary of the invention
The objective of the invention is, the above-mentioned deficiency to existing monitoring method provides a kind of high voltage electric power equip ment temperature on-line monitoring device; Adopt advanced radio network technique and accurate temperature sensor on-line monitoring disconnector temperature, can monitor the temperature of each disconnector contact in real time and preserve the overheated aging conditions of discovering device automatically; The temperature of equipment is carried out effectively monitoring in real time and warning, according to the temperature threshold of setting, when overtemperature; Automatically report to the police, remind the staff to overhaul, so that in time take preventive measures; Reduce and avoid equipment failure, ensure the normal and stable operation of high voltage electric power equip ment.
In order to reach above-mentioned purpose of design, the technical scheme that the present invention adopts is following:
A kind of implementation method of outdoor high-voltage switch temperature bus monitoring device; It is the temperature signal of gathering point for measuring temperature through temperature collect module; And with temperature signal handle the back be delivered to the liquid crystal display instrument through wireless transmission method; Finally after the liquid crystal display apparatus list processing (LISP), send to data monitor center, thereby realized temperature monitoring point for measuring temperature through 485 buses; Said temperature collect module is through battery or inductive coil power supply to be provided; When inductive coil provides power supply; After inducing the energy of interchange through coil from high-tension cable; Need to convert the ac energy of responding to into measurement mechanism required energy through direct current regulation circuit, D.C. regulated power supply is made up of rectifier transformer, rectification circuit, filtering circuit and mu balanced circuit four parts.
A kind of outdoor high-voltage switch temperature bus monitoring device comprises data monitor center, liquid crystal display instrument and temperature collect module; Said data monitor center connects the liquid crystal display instrument through 485 buses; The liquid crystal display instrument is through wireless communication mode cut-in temperature acquisition module; Said temperature collect module directly and point for measuring temperature join, gather the temperature of tested device in real time through 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, the reversible access liquid crystal display LCD of difference, RS485 interface, passive alarm module and radio transmitting and receiving chip on the 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 inserts through the RS485 interface behind arm processor are delivered to data monitor center and carry out monitoring temperature.
Said temperature collect module is made up of radio transmitting and receiving chip, MSP430 microprocessor, temperature sensor, battery and inductive coil; Reversible connection radio transmitting and receiving chip, battery and inductive coil on the MSP430 microprocessor; Battery and inductive coil are that temperature collect module provides power supply; Unidirectional cut-in temperature sensor on the said MSP430 microprocessor; Be delivered to the MSP430 microprocessor after the temperature of temperature sensor collection point for measuring temperature, carry out wireless transmission through radio transmitting and receiving chip after the MSP430 microprocessor processes.
The beneficial effect of outdoor high-voltage switch temperature bus monitoring device of the present invention 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, practice thrift cost; Adopt the transmission of wireless signals mode, temperature collect module is installed in the surface of noble 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 measuring accuracy is high, and is easy for installation; Through inductive coil is that temperature collect module provides power supply, saves the energy.
Description of drawings
Fig. 1 is the structural representation of the described outdoor high-voltage switch temperature of embodiment of the invention bus monitoring device;
Fig. 2 is the structural drawing of the liquid crystal display instrument of the described outdoor high-voltage switch temperature of embodiment of the invention bus monitoring device;
Fig. 3 is the synoptic diagram of the temperature collect module of the described outdoor high-voltage switch temperature of embodiment of the invention bus monitoring device;
Fig. 4 is the circuit diagram of the temperature collect module of the described outdoor high-voltage switch temperature of embodiment of the invention bus monitoring device;
Fig. 5 is the circuit diagram of the inductive coil of the described outdoor high-voltage switch temperature of embodiment of the invention bus monitoring device.
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, inductive coil.
The practical implementation method
As shown in Figure 1; The described outdoor high-voltage switch temperature of embodiment of the invention bus monitoring device; Form by data monitor center 1, liquid crystal display instrument 2 and temperature collect module 3; Said local data Surveillance center 1 connects liquid crystal display instrument 2 through 485 buses, and liquid crystal display instrument 2 is through wireless communication mode cut-in temperature acquisition module 3, said temperature collect module 3 directly and point for measuring temperature join; In the use; Gather the temperature signal of point for measuring temperature through temperature collect module 3; And with temperature signal handle the back be delivered to liquid crystal display instrument 2 through 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 through 485 buses.
Said data monitor center 1 establishes huge database as the MC centre of system, provides sufficient storage 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.
Said 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.
Said temperature collect module 3 joins with tested device, adopts intelligent low-power consumption microprocessor as core, through wireless network and 2 communications of liquid crystal display instrument, gathers the temperature of tested device in real time, and communication distance is greater than 300m.
The said temperature collect module 3 that has sensor is installed in the surface of noble 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 measuring accuracy is high, and 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 the temperature signal information in the arm processor 4 through liquid crystal display LCD5,485 buses that temperature signal inserts through RS485 interface 6 behind arm processor 4 are delivered to data monitor center 1 and carry out monitoring temperature; Can report to the police through passive alarm module 7 when unusual appears in the temperature signal that receives when arm processor 4.
As shown in Figure 3; Said temperature collect module 3 is made up of radio transmitting and receiving chip 8, MSP430 microprocessor 9, temperature sensor 10, battery 11 and inductive coil 12; Reversible connection radio transmitting and receiving chip 8, battery 11 and inductive coil 12 on the MSP430 microprocessor 9; Battery 11 is the power supply that temperature collect module 3 provides different modes with inductive coil 12, satisfies user's different demands, unidirectional cut-in temperature sensor 10 on the said 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 through 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, enlargement 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 that primary side current is excessive the secondary side circuit is caused damage; D2 is a rectifier bridge; D3 is a voltage stabilizing diode; C1, C2 are filter capacitor; U1 is the low difference voltage regulator chip; U is the output supply voltage; After inducing the energy of interchange through coil from high-tension cable; Need to convert the ac energy of responding to into measurement mechanism required energy through direct current regulation circuit, D.C. regulated power supply is made up of rectifier transformer, rectification circuit, filtering circuit and mu balanced circuit four parts.
Said inductive coil 12 utilizes the current transformer principle; Therefrom take out electric energy on the high-tension apparatus for the power supply of rear end temperature measuring equipment, utilize the magnetic bobbin core magnetic saturation characteristic, promptly choose the suitable current transformer sectional area unshakable in one's determination and the magnetoconductivity of ferromagnetic material; Make the normal excitation of its ability when little electric current flows through; And when big electric current passed through, magnetic bobbin core got into the magnetic saturation state, made it comparatively stable working power is provided to the temperature acquisition terminal.
In the said magnetic core design many Performance Influence Factor are arranged, like 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 influence 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 practical implementation method is the preferred embodiments of the present invention, can not limit the present invention, and concrete each item right is defined by the claims.
Claims (5)
1. the implementation method of an outdoor high-voltage switch temperature bus monitoring device; It is characterized in that: through the temperature of temperature collect module collection point for measuring temperature and after the MSP430 microprocessor processes; Be wirelessly transmitted to the liquid crystal display instrument through radio transmitting and receiving chip, be delivered to data monitor center through 485 buses after the arm processor in the liquid crystal display instrument is handled and carry out monitoring temperature; Said temperature collect module is through battery or inductive coil power supply to be provided.
2. the implementation method of outdoor high-voltage switch temperature bus monitoring device according to claim 1; It is characterized in that: when inductive coil provides power supply; After inducing the energy of interchange through coil from high-tension cable; Convert the ac energy of responding to into measurement mechanism required energy through direct current regulation circuit, D.C. regulated power supply is made up of rectifier transformer, rectification circuit, filtering circuit and mu balanced circuit.
3. outdoor high-voltage switch temperature bus monitoring device; It is characterized in that: form by data monitor center, liquid crystal display instrument and temperature collect module; Said data monitor center connects the liquid crystal display instrument through 485 buses; The liquid crystal display instrument is through wireless communication mode cut-in temperature acquisition module, said temperature collect module directly and point for measuring temperature join.
4. outdoor high-voltage switch temperature bus monitoring device according to claim 3; 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.
5. outdoor high-voltage switch temperature bus monitoring device according to claim 3; It is characterized in that: said temperature collect module is made up of radio transmitting and receiving chip, MSP430 microprocessor, temperature sensor, battery and inductive coil; Reversible connection radio transmitting and receiving chip, battery and inductive coil on the MSP430 microprocessor, unidirectional cut-in temperature sensor on the said MSP430 microprocessor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101280425A CN102305667A (en) | 2010-03-19 | 2010-03-19 | Device for monitoring temperature of outdoor high-voltage switch through bus and implementation method of device |
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| CN2010101280425A CN102305667A (en) | 2010-03-19 | 2010-03-19 | Device for monitoring temperature of outdoor high-voltage switch through bus and implementation method of device |
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| CN102305667A true CN102305667A (en) | 2012-01-04 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103913245A (en) * | 2013-01-09 | 2014-07-09 | 张恒驰 | Chargeable wireless temperature measuring system capable of achieving self electricity taking |
| CN104390725A (en) * | 2014-10-14 | 2015-03-04 | 安徽科盟电子科技有限公司 | Intelligent self-power-supplying wireless temperature measurement system |
| CN105509927A (en) * | 2015-11-27 | 2016-04-20 | 广东电网有限责任公司中山供电局 | Substation temperature measuring method and system |
| CN106441618A (en) * | 2016-09-28 | 2017-02-22 | 国网江苏省电力公司电力科学研究院 | Contact type passive wireless monitor for abnormal heating of through-flow loop of high-voltage disconnecting switch |
| 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 |
| CN106908188A (en) * | 2017-05-03 | 2017-06-30 | 南京科瑞电力科技有限公司 | A kind of GIS air pressure inside supervising devices based on temperature sensor |
| CN107907242A (en) * | 2017-10-25 | 2018-04-13 | 河海大学 | A kind of high voltage bus tie point passive contact-free temperature measuring equipment |
| CN110908307A (en) * | 2019-11-01 | 2020-03-24 | 国网江苏省电力有限公司盐城供电分公司 | Power equipment temperature monitoring system and monitoring method thereof |
-
2010
- 2010-03-19 CN CN2010101280425A patent/CN102305667A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103913245A (en) * | 2013-01-09 | 2014-07-09 | 张恒驰 | Chargeable wireless temperature measuring system capable of achieving self electricity taking |
| CN104390725A (en) * | 2014-10-14 | 2015-03-04 | 安徽科盟电子科技有限公司 | Intelligent self-power-supplying wireless temperature measurement system |
| CN105509927A (en) * | 2015-11-27 | 2016-04-20 | 广东电网有限责任公司中山供电局 | Substation temperature measuring method and system |
| CN106441618A (en) * | 2016-09-28 | 2017-02-22 | 国网江苏省电力公司电力科学研究院 | Contact type passive wireless monitor for abnormal heating of through-flow loop of high-voltage disconnecting switch |
| CN106441618B (en) * | 2016-09-28 | 2019-01-22 | 国网江苏省电力公司电力科学研究院 | A kind of high voltage isolator abnormal heating contact passive and wireless monitoring device |
| 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 |
| CN106908188A (en) * | 2017-05-03 | 2017-06-30 | 南京科瑞电力科技有限公司 | A kind of GIS air pressure inside supervising devices based on temperature sensor |
| CN107907242A (en) * | 2017-10-25 | 2018-04-13 | 河海大学 | A kind of high voltage bus tie point passive contact-free temperature measuring equipment |
| CN110908307A (en) * | 2019-11-01 | 2020-03-24 | 国网江苏省电力有限公司盐城供电分公司 | Power equipment temperature monitoring system and monitoring method thereof |
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Application publication date: 20120104 |