CN103604529A - Non-contact type converter valve temperature on-line monitoring method and device - Google Patents
Non-contact type converter valve temperature on-line monitoring method and device Download PDFInfo
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- CN103604529A CN103604529A CN201310603939.2A CN201310603939A CN103604529A CN 103604529 A CN103604529 A CN 103604529A CN 201310603939 A CN201310603939 A CN 201310603939A CN 103604529 A CN103604529 A CN 103604529A
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Abstract
The invention discloses a non-contact type converter valve temperature on-line monitoring method and device. The method comprises the steps that a temperature sensor located in a high potential area collects temperature data on the surface of a converter valve radiator, the temperature data are converted into digital signals which are transmitted to a receiving device located in a low potential area through electromagnetic wave carrier waves, the receiving device restores the received digital signals to be digital temperature signals, and the converter valve temperature is obtained according to the restored digital temperature signals. No direct electrical contact exists between a transmitter-receiver set and the temperature sensor located in the high potential area, and safety is good; the temperature sensor is directly arranged on the surface of the converter valve radiator, and precision is high; the non-contact type converter valve temperature on-line monitoring method and device can be directly applied to an intelligent converter station, and on-line monitoring of the converter valve temperature is achieved.
Description
Technical field
The invention belongs to converter valve running status on-line monitoring field, be specifically related to a kind of contactless converter valve on-line temperature monitoring method and device.
Background technology
The ultimate principle of D.C. high voltage transmission (HVDC) is, by rectifier, alternating current is transformed into direct current form, then by inverter, direct current is transformed to alternating current, realizes delivery of electrical energy and Power System Interconnection.Converter valve is most important element in direct current transportation.Converter valve is for realizing the brachium pontis of the three-phase bridge transverter of change of current needs, is to realize the alternating current-direct current electric energy basic device unit (BDU) of the transverter of conversion mutually, and its safe operation plays central role in whole DC transmission engineering.The heat producing during converter valve work, will cause chip temperature to raise, if there is no suitable cooling measure, may make chip temperature surpass the maximum junction temperature of permission, thereby cause device performance degradation so that damage.Therefore, the heat dissipation problem of the major equipment converter valve in D.C. high voltage transmission becomes very important problem.If heat dissipation problem appears in converter valve, will cause converter valve temperature to raise, if do not find in time and process, by the work efficiency that affects converter valve serviceable life even.At present, also there is no a kind of effective converter valve on-line temperature monitoring method.
Conventional converter valve temperature monitoring method has following several now:
1, using the outlet water temperature of converter valve water cooling system as indirect temperature measurement point, by setting up the mathematical Model of Heat Transfer of heating radiator, well heater, converter valve, indirectly extrapolate converter valve temperature.The shortcoming of the method is accurately to obtain converter valve temperature, especially cannot find the hot localised points of converter valve.
2, infrared measurement of temperature method, measures converter valve temperature by the hand-held infrared thermometer of staff.But, by infared spectrum, indirectly obtain temperature data, accuracy can not meet the demands sometimes; To the Computer Recognition Technology level of infared spectrum, can't substitute artificial cognition, automaticity is not high simultaneously, and measurement range is little; While infrared thermometer complex structure, bulky, cost is higher, is not suitable for the on-line monitoring of converter valve temperature.
3, utilize fiber grating cable temperature sensor measurement converter valve temperature, based on cable, the temperature field under in working order distributes and by temperature, the modulation of Bragg wavelength is realized the party's ratio juris.When the temperature of fiber grating changes, due to expanding with heat and contract with cold and thermo-optic effect of optical fiber, the Bragg wavelength of fiber grating selective reflecting can change.In conventional temperature range, therefore wavelength variations and the sexual intercourse of temperature variation retention wire, as long as record the Bragg wavelength of fiber grating, with regard to the temperature of known fiber grating.But the method need to be installed a large amount of optical fiber in converter valve, disadvantage is to change the Electric Field Distribution in converter valve, causes internal field to raise, and threatens the validity of insulation.
As seen from the above analysis, existing converter valve thermometry has limitation separately, is also not suitable as at present converter valve temperature online measuring method.Therefore, need a kind of effective converter valve on-line temperature monitoring method.
Summary of the invention
The deficiency existing for prior art, the invention provides a kind of contactless converter valve on-line temperature monitoring method and device.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
One, contactless converter valve on-line temperature monitoring method, be characterized in: the temperature sensor that is positioned at noble potential district gathers the temperature data of converter valve spreader surface, temperature data is converted to after digital signal by electromagnetic wave carrier transmit to the receiving trap that is positioned at electronegative potential district, receiving trap is reduced to the digital signal of reception the temperature signal of digital form, according to the temperature signal of the digital form of reduction, obtains converter valve temperature.
The above-mentioned acquisition of the temperature signal according to the digital form of reduction converter valve temperature is specially:
Receiving trap carries out to the digital signal receiving the temperature signal that demodulation obtains digital form, according to the temperature signal of the modulation system of receiving trap and digital form, obtains converter valve temperature.
Two, contactless converter valve on-line temperature monitoring terminal, comprising:
Be located at converter valve spreader surface RFID temperature sensor, be positioned at electromagnetism R-T unit and the processor in electronegative potential district, between RFID temperature sensor and electromagnetism R-T unit, without being electrically connected to, electromagnetism R-T unit is connected with processor.
Above-mentioned RFID temperature sensor is passive RFID temperature sensor.
Above-mentioned electromagnetism R-T unit is Non-contact Media Reader.
Above-mentioned processor is single-chip microcomputer, by serial ports, is connected with electromagnetism R-T unit.
Three, contactless converter valve temperature on-line monitoring device, comprising:
Be located at the RFID temperature sensor of converter valve spreader surface, the electromagnetism R-T unit that is positioned at electronegative potential district, processor and converter valve monitoring temperature workstation, between RFID temperature sensor and electromagnetism R-T unit, nothing is electrically connected to, electromagnetism R-T unit is connected with processor, between processor and converter valve monitoring temperature workstation, by LAN (Local Area Network), connects.
Above-mentioned processor connects the LAN (Local Area Network) of intelligent current conversion station by Ethernet interface, the LAN (Local Area Network) of intelligent current conversion station connects converter valve monitoring temperature workstation by switch.
Above-mentioned processor adopting IEC61850 agreement and converter valve monitoring temperature workstation communicate.
Terminal of the present invention is by RFID(radio-frequency (RF) identification) temperature sensor is located at noble potential district, electromagnetism R-T unit is located to electronegative potential district, between RFID temperature sensor and electromagnetism R-T unit, utilize air as insulating medium, utilize electromagnetic wave transferring energy and signal, thereby realize the on-line monitoring of converter valve temperature.Between RFID temperature sensor and electromagnetism R-T unit, without being directly electrically connected to, do not affecting under the prerequisite of converter valve safe operation running temperature that can Measurement accuracy converter valve.
Be pasted on the RFID temperature sensor of converter valve spreader surface for gathering converter valve spreader surface temperature, electromagnetism R-T unit is used for receiving the temperature data that RFID temperature sensor gathers, and processor is used for temperature data to process to obtain converter valve temperature.As preferably, RFID temperature sensor is passive RFID temperature sensor, does not need to install battery, non-maintaining.Electromagnetism R-T unit is Non-contact Media Reader;
The principle of work of terminal of the present invention is:
Electromagnetism R-T unit with the form of emitting electromagnetic wave to RFID temperature sensor conveying capacity with read temperature signal, receive the RFID temperature sensor that electromagnetism R-T unit transmits the temperature signal of collection is back to electromagnetism R-T unit with electromagnetic wave carrier system, electromagnetism R-T unit carries out demodulation to the electromagnetic wave carrier signal receiving, obtain the temperature signal of digital form, and the temperature signal of digital form is transferred to processor, the temperature signal of the modulation system that processor adopts according to electromagnetism R-T unit and the digital form of reception calculates and obtains converter valve temperature.
Terminal of the present invention can be by Ethernet interface by the converter valve temperature data uploading of measuring the LAN (Local Area Network) to intelligent current conversion station, and continue transmission converter valve temperature data to converter valve monitoring temperature workstation by switch, thereby can realize online demonstration, record and the warning of converter valve temperature.
As preferably, terminal handler of the present invention adopts IEC61850 agreement to transmit data, converter valve temperature data directly can be sent to intelligent current conversion station.The concrete data procedures that transmits is: processor is sent converter valve temperature data into the packing of IEC61850 protocol stack, IEC61850 protocol stack is converted to converter valve temperature data the packet that meets IEC61850-9-2, by Ethernet interface, be uploaded to the LAN (Local Area Network) of intelligent current conversion station, and be transferred to converter valve monitoring temperature workstation by switch.
Compared with prior art, the present invention has advantage:
1, be positioned at the electromagnetism R-T unit in electronegative potential district and be positioned between the temperature sensor in noble potential district without directly electrically contacting, can not threaten to the normal operation of converter valve and staff's personal safety, security is good.
2, temperature sensor is directly arranged at converter valve spreader surface, and measuring accuracy is high.
3, realized the on-line monitoring of converter valve temperature.
4, terminal handler of the present invention adopts IEC61850 agreement and the work of converter valve monitoring temperature to communicate, and can directly apply to intelligent current conversion station.
Accompanying drawing explanation
Fig. 1 is the concrete structure schematic diagram of apparatus of the present invention;
Fig. 2 is passive RFID temperature sensor installation site schematic diagram in converter valve in certain embodiment;
Fig. 3 is principle of the invention schematic diagram.
In figure, 1-passive RFID temperature sensor, 2-Non-contact Media Reader, 3-processor, 4-protocol stack, 5-Ethernet interface, 6-switch, 7-converter valve monitoring temperature workstation.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail.
See Fig. 1, terminal of the present invention comprises passive RFID temperature sensor (1), Non-contact Media Reader (2) and processor (3).Passive RFID temperature sensor (1) is without Power supply, and it is pasted on converter valve spreader surface, and it is in noble potential district, and passive RFID temperature sensor (1) model adopting in this concrete enforcement is SAW-C1.
The Non-contact Media Reader (2) that can transmit and receive electromagnetic signal is placed in the place of safety at edge, the Converter Station Valve Room, passive RFID temperature sensor (1) does not directly contact with Non-contact Media Reader (2) and without electrical connection, both pass through electromagnetic wave transmission signal, Non-contact Media Reader (2) is crossed to passive RFID temperature sensor (1) conveying capacity and reads temperature signal with the form of emitting electromagnetic wave, receive electromagnetic passive RFID temperature sensor (1) temperature signal is back to Non-contact Media Reader (2) with electromagnetic wave carrier system, Non-contact Media Reader (2) carries out demodulation to the electromagnetic carrier wave signal receiving, obtain the temperature signal of digital form, and the temperature signal of digital form is transferred to processor (3), processor (3) is processed the temperature data receiving and is obtained converter valve temperature.Non-contact Media Reader (2) model adopting in this concrete enforcement is XCRMF-801.
Processor (3) is processed the temperature signal of the digital form receiving, obtain converter valve temperature, and converter valve temperature data is sent into IEC61850 protocol stack (4) processing of packing, IEC61850 protocol stack (4) is converted to converter valve temperature data the packet that meets IEC61850-9-2, by fiber optic Ethernet interface (5), upload to the LAN (Local Area Network) of intelligent current conversion station, and be transferred to converter valve monitoring temperature workstation (7) by switch (6), realize on-line monitoring, record and the warning of converter valve temperature.In this concrete enforcement, processor (3) adopts MC1210 single-chip microcomputer, adopts serial ports to be connected with Non-contact Media Reader (2).
The modulation system that processor (3) adopts according to Non-contact Media Reader (2) is processed the temperature signal of the digital form receiving.In this concrete enforcement, Non-contact Media Reader (2) adopts 100%ASK modulation system and passive RFID temperature sensor (1) swap data, obtain the counted number of pulses N relevant to temperature signal, it is the temperature signal of the digital form of processor reception, by formula T=(160-N)/2, calculate and obtain converter valve temperature value T, and converter valve temperature value T is transferred to converter valve monitoring temperature workstation (7) by Ethernet interface (5), switch (6) successively, converter valve monitoring temperature workstation (7) is remote server.
Fig. 2 be in specific embodiment passive RFID temperature sensor certain ± scheme of installation in 500kV current conversion station, passive RFID temperature sensor is installed on the heating radiator that is marked with 1,2,3,4,5,6,7,8,9,10 in converter valve, can directly measure radiator temperature.
Fig. 3 is principle of the invention schematic diagram, and temperature sensor is adopted as passive RFID temperature sensor (1), can be by electromagnetic wave and Non-contact Media Reader (2) interaction data in electronegative potential district.Passive RFID temperature sensor (1) does not contact with Non-contact Media Reader (2) and without electrical connection, between passive RFID temperature sensor (1) and Non-contact Media Reader (2), rely on air insulation, RFID temperature sensor (1) and Non-contact Media Reader (2) are at a distance of more than 10 meters, solved Insulation Problems, can not threaten to the normal operation of converter valve and staff's personal safety, can monitor converter valve temperature again.
RFID temperature sensor passes through electromagnetic wave carrier transmit after the temperature signal of collection is converted to digital signal, electromagnetism R-T unit receives the digital signal of RFID temperature sensor transmitting and is reduced to digital quantity, and controller obtains converter valve temperature according to the digital quantity of reduction.
Above-described embodiment of the present invention, does not form limiting the scope of the present invention.Any modification of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in claim protection domain of the present invention.
Claims (9)
1. contactless converter valve on-line temperature monitoring method, is characterized in that:
The temperature sensor that is positioned at noble potential district gathers the temperature data of converter valve spreader surface, temperature data is converted to after digital signal by electromagnetic wave carrier transmit to the receiving trap that is positioned at electronegative potential district, receiving trap is reduced to the digital signal of reception the temperature signal of digital form, according to the temperature signal of the digital form of reduction, obtains converter valve temperature.
2. contactless converter valve on-line temperature monitoring method as claimed in claim 1, is characterized in that:
The described acquisition of the temperature signal according to the digital form of reduction converter valve temperature is specially:
Receiving trap carries out to the digital signal receiving the temperature signal that demodulation obtains digital form, according to the temperature signal of the modulation system of receiving trap and digital form, obtains converter valve temperature.
3. contactless converter valve on-line temperature monitoring terminal, is characterized in that, comprising:
Be located at converter valve spreader surface RFID temperature sensor, be positioned at electromagnetism R-T unit and the processor in electronegative potential district, between RFID temperature sensor and electromagnetism R-T unit, without being electrically connected to, electromagnetism R-T unit is connected with processor.
4. contactless converter valve on-line temperature monitoring terminal as claimed in claim 3, is characterized in that:
Described RFID temperature sensor is passive RFID temperature sensor.
5. contactless converter valve on-line temperature monitoring terminal as claimed in claim 3, is characterized in that:
Described electromagnetism R-T unit is Non-contact Media Reader.
6. contactless converter valve on-line temperature monitoring terminal as claimed in claim 3, is characterized in that:
Described processor is single-chip microcomputer, by serial ports, is connected with electromagnetism R-T unit.
7. contactless converter valve temperature on-line monitoring device, is characterized in that, comprising:
Be located at the RFID temperature sensor of converter valve spreader surface, the electromagnetism R-T unit that is positioned at electronegative potential district, processor and converter valve monitoring temperature workstation, between RFID temperature sensor and electromagnetism R-T unit, nothing is electrically connected to, electromagnetism R-T unit is connected with processor, between processor and converter valve monitoring temperature workstation, by LAN (Local Area Network), connects.
8. contactless converter valve temperature on-line monitoring device as claimed in claim 7, is characterized in that:
Described processor connects the LAN (Local Area Network) of intelligent current conversion station by Ethernet interface, the LAN (Local Area Network) of intelligent current conversion station connects converter valve monitoring temperature workstation by switch.
9. contactless converter valve temperature on-line monitoring device as claimed in claim 7, is characterized in that:
Described processor adopting IEC61850 agreement and converter valve monitoring temperature workstation communicate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310603939.2A CN103604529A (en) | 2013-11-25 | 2013-11-25 | Non-contact type converter valve temperature on-line monitoring method and device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310603939.2A CN103604529A (en) | 2013-11-25 | 2013-11-25 | Non-contact type converter valve temperature on-line monitoring method and device |
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| CN103604529A true CN103604529A (en) | 2014-02-26 |
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| CN201310603939.2A Pending CN103604529A (en) | 2013-11-25 | 2013-11-25 | Non-contact type converter valve temperature on-line monitoring method and device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106017733A (en) * | 2016-08-04 | 2016-10-12 | 南京南瑞继保电气有限公司 | Temperature online monitoring device and method for modular multi-level converter valve |
| CN110426329A (en) * | 2018-11-30 | 2019-11-08 | 中国南方电网有限责任公司超高压输电公司广州局 | Converter station valve hall particulate matter on-line monitoring method, apparatus and system |
| CN112164209A (en) * | 2020-08-20 | 2021-01-01 | 中国南方电网有限责任公司超高压输电公司广州局 | Method and system for predicting temperature of converter valve element of converter station |
| CN113676862A (en) * | 2021-08-19 | 2021-11-19 | 全球能源互联网欧洲研究院 | Converter valve safety monitoring system and method |
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| CN113676862A (en) * | 2021-08-19 | 2021-11-19 | 全球能源互联网欧洲研究院 | Converter valve safety monitoring system and method |
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Application publication date: 20140226 |