CN100573068C - Based on the online multi-parameter monitoring devices of the transformer of fiber optic sensor technology - Google Patents
Based on the online multi-parameter monitoring devices of the transformer of fiber optic sensor technology Download PDFInfo
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- CN100573068C CN100573068C CN200810098867.XA CN200810098867A CN100573068C CN 100573068 C CN100573068 C CN 100573068C CN 200810098867 A CN200810098867 A CN 200810098867A CN 100573068 C CN100573068 C CN 100573068C
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Abstract
The invention discloses the online multi-parameter monitoring devices of a kind of transformer based on fiber optic sensor technology, wherein, MEMS fibre optic temperature sensor modular unit output terminal, MEMS optical fibre vibration sensor modular unit output terminal, MEMS optical fiber noise transducer modular unit output terminal all are connected with transducing signal interface conversion circuit unit input end, and transducing signal interface conversion circuit unit output terminal is connected with the digital signal processing unit input end; The digital signal processing unit output terminal is connected with the input end of network interface with output sound light alarming circuit unit.Using optical fibre sensor of the present invention carries out real-time signals collecting to the running status transformer parameter, realizes the on-line monitoring transformer with digital signal processing.Mode by optical communication transmits the temperature of transformer, vibration and noise parameter in real time, realizes the on-line real time monitoring of electric system transformer after digital signal processing.Realize the unmanned of transformer, improved transformer safe operation monitoring level.
Description
Technical field
The present invention relates to a kind of transformer online monitoring device, specifically a kind of MOEM (Micro-0ptical-Electro-Mechanical System with the advanced person, Micro-Opto-Electro-Mechanical Systems) optical fiber sensing technology and computer data acquiring and analytical technology combine, by network communication mode, realize the transformer multiparameter on-Line Monitor Device based on fiber optic sensor technology of electric system transformer monitoring.
Background technology
Transformer is the key equipment in the electric system, and its good operation has great importance to power grid security.But transformer is in operation, owing to inevitably be subjected to the influence of various factorss such as electricity, heat, vibration, environment, insulation ag(e)ing, the continuous deterioration of its technical feature makes running status not good.At present, prophylactic repair and safety test are the main means that guarantee the transformer safe operation, but because the time between overhauls(TBO) is long, existing preventive trial project is insensitive, untimely to the developing fault reflection of transformer, speed of development often can not in time be found several days local defects to several weeks, even cause taking place various faults (as crossing hot fault, discharge property fault, overheated double discharge fault, mechanical fault etc.) and major accident, cause part and even large-area power-cuts, cause huge direct and indirect economic loss and social influence.Therefore, press for advanced technological means, transformer is carried out on-line monitoring effectively, grasp the running status of transformer in real time, with the prophylactic repair of repair and maintenance replacement targetedly, reduce loss of outage, realize the safe operation target that initial failure is forecast, avoided serious accident to take place.The on-line monitoring of transformer running status is the development trend of transformer safe operation.
Transformer many reference amounts optical fiber on-line monitoring technique is based on 21 century advanced person's MOEM (Micro-Opto-Electro-Mechanical Systems) optical fiber sensing technology, by polytype Fibre Optical Sensor, as MEMS fibre optic temperature sensor, MEMS optical fibre vibration sensor, MEMS optical fibre ultrasonic sensor etc., the running status of on-line monitoring transformer, because Fibre Optical Sensor excellent insulation performance, profile be small and exquisite, be not subjected to electromagnetic interference (EMI), so can be directly installed on transformer inside, have better detection sensitivity and localization of fault ability.With the running status of Fibre Optical Sensor on-line monitoring transformer, and directly in the mode of light signal value of consult volume is transmitted after digital signal processing, real time on-line monitoring transformer running status is delivered to service data in transformer station pulpit or the control room.When the partial discharge of transformer amount exceeds standard, transformer oil and winding focus excess temperature is overheated, iron core and winding deformation, when mechanical fault such as loosening takes place, automatically carry out sound, light is reported to the police and send alarming short message to the operator on duty, for the timely repair and maintenance of transformer provides believable foundation, realize the unmanned of transformer, improve transformer safe operation monitoring level.Because the transformer online monitoring device adopts full optical fiber detection technique, detection probe and transmission line that transformer is installed all are the optical fiber material, therefore, be not electrically connected between on-Line Monitor Device and the transformer, to electrical network without any influence.Also there is not a kind of transformer multiparameter on-Line Monitor Device in the market based on fiber optic sensor technology.
Summary of the invention
The purpose of this invention is to provide a kind of transformer multiparameter on-Line Monitor Device based on fiber optic sensor technology, this monitoring device using optical fibre sensor carries out the live signal collection to the transformer multiparameter of running status, and realize on-line monitoring with Digital Signal Processing, realize unmanned and report to the police automatically.
The object of the present invention is achieved like this:
A kind of transformer online monitoring device based on fiber optic sensor technology, it comprises MEMS fibre optic temperature sensor modular unit, MEMS optical fibre vibration sensor modular unit, MEMS optical fiber noise transducer modular unit, transducing signal interface conversion circuit unit, digital signal processing (DSP) unit, network interface and output sound light alarming circuit unit; MEMS fibre optic temperature sensor modular unit output terminal, MEMS optical fibre vibration sensor modular unit output terminal, MEMS optical fiber noise transducer modular unit output terminal all are connected with transducing signal interface conversion circuit unit input end, and transducing signal interface conversion circuit unit output terminal is connected with the digital signal processing unit input end; The digital signal processing unit output terminal is connected with the input end of network interface with output sound light alarming circuit unit.
Among the present invention, MEMS fibre optic temperature sensor modular unit output terminal TX1/RX1 links to each other with transducing signal interface conversion circuit unit input end, MEMS optical fibre vibration sensor modular unit output terminal TX2/RX2 links to each other with transducing signal interface conversion circuit unit input end, and MEMS optical fiber noise transducer modular unit output terminal TX3/RX3 links to each other with transducing signal interface conversion circuit unit input end.Transducing signal interface conversion circuit unit output terminal TX/RX/CON1 links to each other with the digital signal processing unit input end.Digital signal processing unit output terminal TX45/RX45/OUT1-n links to each other with the input end of network interface with output sound light alarming circuit unit.
Among the present invention, described digital signal processing unit is made of TI 2000 series DSP and level transformating chip 74LVC14.Transducing signal interface conversion circuit unit is reached (STC89C5402) by one group of multi-disc STC single-chip microcomputer and serial communication chip for driving MAX232 and connector DB9 formation.Network interface and output sound light alarming circuit unit are made of network-driven chip, RJ45 connector, N type triode and power relay (JQC-3F-12VDC).
Principle of work of the present invention is: according to the technical requirement of the online multi-parameter monitoring of transformer, and design temperature parameter, vibration parameters and ultrasound parameter in transducing signal interface conversion circuit unit single-chip microcomputer and digital signal processing unit.After powering up work, single-chip microcomputer and digital signal processing chip DSP are carried out initialization operation, after initialization is finished, LED in the device provides the status signal of flicker, the multi-channel optical fibre sensor is input to digital signal processing unit by the parameter signals of RS232 serial communication port output after the conversion of transducing signal interface conversion circuit unit, after digital signal processing, service data is delivered in transformer station pulpit or the control room.When transformer generation abnormal conditions, carry out sound automatically, light is reported to the police and send alarming short message to the operator on duty, realizes unmanned.
Among the present invention, detection probe and transmission line that transformer is installed all are the optical fiber material, therefore, be not electrically connected between on-Line Monitor Device and the transformer, to electrical network without any influence.
The present invention combines photoelectric sense technology and Digital Signal Processing, mode by optical communication transmits the temperature of transformer, vibration and ultrasound parameter in real time, realizes the online multiparameter real-time detection function of electric system transformer after digital signal processing.The present invention has realized unmanned and has reported to the police automatically, is a kind of brand-new and safe and reliable transformer multiparameter on-Line Monitor Device, has goodish application prospect and market outlook.The present invention will improve transformer safe operation on-line monitoring technique level greatly, to reducing the operation of power networks cost, realize the automation of transformation substations and scientific management, ensure that better the reliable and secure property of electrical production is significant.
Description of drawings
Fig. 1 circuit structure block diagram of the present invention;
Fig. 2 is a circuit diagram of the present invention.
Embodiment
A kind of transformer online monitoring device based on fiber optic sensor technology of the present invention comprises MEMS fibre optic temperature sensor modular unit 1, MEMS optical fibre vibration sensor modular unit 2, MEMS optical fiber noise transducer modular unit 3, digital signal processing (DSP) unit 5, transducing signal interface conversion circuit unit 4, network interface and output sound light alarming circuit unit 6.
MEMS fibre optic temperature sensor modular unit 1 output terminal TX1/RX1 links to each other with transducing signal interface conversion circuit unit 4 input ends.MEMS optical fibre vibration sensor modular unit 2 output terminal TX2/RX2 link to each other with transducing signal interface conversion circuit unit 4 input ends.MEMS optical fiber noise transducer modular unit 3 output terminal TX3/RX3 link to each other with transducing signal interface conversion circuit unit 4 input ends.Transducing signal interface conversion circuit unit 4 output terminal TX/RX/CON1 link to each other with digital signal processing unit 5 input ends.Digital signal processing unit 5 output terminal TX45/RX45/0UT1-n link to each other with the input end of network interface with output sound light alarming circuit unit 6.
Transducing signal interface conversion circuit unit 4 can have the Fibre Optical Sensor of a plurality of configuration RS232 serial ports simultaneously.The digital signal processing unit 5 configuration 10MHZ and the 100MHZ network bandwidth and transformer station pulpit or control room communicate.Network interface and output sound light alarming circuit unit 6 can provide the SMS alarm of the sound and light alarm and the mobile phone of various ways simultaneously.
Before the present invention uses, according to the technical requirement of the online multi-parameter monitoring of transformer, design temperature parameter, vibration parameters and ultrasound parameter in transducing signal interface conversion circuit unit single-chip microcomputer and digital signal processing unit.After powering up work, single-chip microcomputer and digital signal processing chip DSP are carried out initialization operation, after initialization is finished, LED in the device provides the status signal of flicker, the multi-channel optical fibre sensor is input to digital signal processing unit by the parameter signals of RS232 serial communication port output after the conversion of transducing signal interface conversion circuit unit, after digital signal processing, service data is delivered in transformer station pulpit or the control room.When transformer generation abnormal conditions, the present invention carries out sound automatically, light is reported to the police and send alarming short message to the operator on duty, realizes unmanned.
The present invention combines photoelectric sense technology and Digital Signal Processing, mode by optical communication transmits the temperature of transformer, vibration and noise parameter in real time, the online multiparameter that realizes the electric system transformer after digital signal processing detects in real time, and can realize unmanned and warning automatically, safe and reliable.
Claims (5)
1, the online multi-parameter monitoring devices of a kind of transformer based on fiber optic sensor technology is characterized in that: it comprises MEMS fibre optic temperature sensor modular unit (1), MEMS optical fibre vibration sensor modular unit (2), MEMS optical fibre ultrasonic sensor modular unit (3), transducing signal interface conversion circuit unit (4), digital signal processing unit (5) and network interface and output sound light alarming circuit unit (6); MEMS fibre optic temperature sensor modular unit (1) output terminal, MEMS optical fibre vibration sensor modular unit (2) output terminal and MEMS optical fiber noise transducer modular unit (3) output terminal all are connected with transducing signal interface conversion circuit unit (4) input end, and transducing signal interface conversion circuit unit (4) output terminal is connected with digital signal processing unit (5) input end; Digital signal processing unit (5) output terminal is connected with the input end of network interface with output sound light alarming circuit unit (6).
2, the online multi-parameter monitoring devices of the transformer based on fiber optic sensor technology according to claim 1 is characterized in that: digital signal processing unit (5) unit comprises TI 2000 series DSP.
3, the online multi-parameter monitoring devices of the transformer based on fiber optic sensor technology according to claim 1, it is characterized in that: transducing signal interface conversion circuit unit (4) comprises one group of STC single-chip microcomputer.
4, the online multi-parameter monitoring devices of the transformer based on fiber optic sensor technology according to claim 1 is characterized in that: network interface and output sound light alarming circuit unit (6) are made of network-driven chip, RJ45 connector, N type triode and power relay.
5, the online multi-parameter monitoring devices of the transformer based on fiber optic sensor technology according to claim 1 is characterized in that: network interface and output sound light alarming circuit unit (6) comprise sound and light alarm and SMS warning.
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| CN200810098867.XA CN100573068C (en) | 2008-05-16 | 2008-05-16 | Based on the online multi-parameter monitoring devices of the transformer of fiber optic sensor technology |
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| CN200810098867.XA CN100573068C (en) | 2008-05-16 | 2008-05-16 | Based on the online multi-parameter monitoring devices of the transformer of fiber optic sensor technology |
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| CN100573068C true CN100573068C (en) | 2009-12-23 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103759808B (en) * | 2014-02-20 | 2017-07-14 | 重庆大学 | Transformer noise is monitored and pre-warning signal emission system |
| CN104296859A (en) * | 2014-10-15 | 2015-01-21 | 北京交大创新科技中心 | Monitoring device for vibration and temperature state of ultra-high voltage power transformer in operation |
| CN104359549B (en) * | 2014-11-27 | 2015-07-08 | 国家电网公司 | Transformer core vibration noise analysis method |
| CN110793664B (en) * | 2019-11-01 | 2021-07-23 | 山东电工电气集团有限公司 | Installation and arrangement method of multi-parameter sensing transformer optical fiber sensor |
| CN113114353A (en) * | 2021-04-16 | 2021-07-13 | 西南科技大学 | Communication network fault detection system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201107631Y (en) * | 2007-11-19 | 2008-08-27 | 南京工业职业技术学院 | Transformer on-line monitoring device based on fiber optic sensor technology |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201107631Y (en) * | 2007-11-19 | 2008-08-27 | 南京工业职业技术学院 | Transformer on-line monitoring device based on fiber optic sensor technology |
Non-Patent Citations (4)
| Title |
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| 光纤光栅测温系统在变压器绕组温度在线监测中的应用. 尤旭鹏，杨广学.电子科技，第2006年第12期（总第207期）期. 2006 |
| 光纤光栅测温系统在变压器绕组温度在线监测中的应用. 尤旭鹏，杨广学.电子科技，第2006年第12期（总第207期）期. 2006 * |
| 光纤技术在电力变压器绝缘监测中的应用. 王国利等.高压电器，第37卷第2期. 2001 |
| 光纤技术在电力变压器绝缘监测中的应用. 王国利等.高压电器，第37卷第2期. 2001 * |
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