CN102928740A - Intelligent collection type fault diagnosis and on-line temperature measuring system - Google Patents
Intelligent collection type fault diagnosis and on-line temperature measuring system Download PDFInfo
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- CN102928740A CN102928740A CN2012104382612A CN201210438261A CN102928740A CN 102928740 A CN102928740 A CN 102928740A CN 2012104382612 A CN2012104382612 A CN 2012104382612A CN 201210438261 A CN201210438261 A CN 201210438261A CN 102928740 A CN102928740 A CN 102928740A
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
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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
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
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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
- Y04S40/124—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 wired telecommunication networks or data transmission busses
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Abstract
The invention relates to an intelligent collection type fault diagnosis and on-line temperature measuring system. A common power supply place is arranged in a testing area, composite low-voltage optical fiber cables are accessed to different user sides from the common power supply place, an intelligent collection monitoring platform is arranged in the common power supply place and respectively connected with a first upper computer and a second upper computer, the first upper computer is connected with a fault diagnosis host machine, the second upper computer is connected with an on-line temperature measuring host machine, the fault diagnosis host machine is connected with optical fibers in the composite low-voltage optical fiber cables, and the on-line temperature measuring host machine is connected with temperature measuring optical fibers which are laid on surfaces of the composite low-voltage optical fiber cables. According to the intelligent platform, devices with two different functions are collected in the same monitoring platform, cable temperature on-line monitoring and optical fiber fault real-time judgment in the composite low-voltage optical fiber cables in the testing area can be finished in the same platform, and the system has the advantages of intelligent advancement and economic practicality.
Description
Technical field
The present invention relates to power transmission network, specially refer to the intelligent platform for monitoring usefulness on transmission of electricity and the information network, this intelligent platform has fault diagnosis and temperature measurement on-line function simultaneously.
Background technology
In recent years, follow the developing rapidly and the intelligentized propelling of electrical network of rapid growth, electrical network of China's economy, form take optical fiber communication as main high speed information transmission channel, but this has also caused the continuous expansion of power telecom network scale, network structure increasingly sophisticated, the power communication basic resource can not be utilized effectively, and has seriously restricted the development of intelligent adapted electricity.
Fiber entering household is the inherent requirement of development intelligent grid, and State Grid Corporation of China is carrying forward vigorously the power optical fiber engineering construction of registering one's residence.Traditional fiber entering household FTTH(Fiber to the home) scheme is at the high cost of user side laying, so that electrical network is almost nil in the optical fiber rate of user side.Optical fiber composite low-voltage cable OPLC(Optical fiber composite low-voltages cable) will become the preferred option of intelligent grid user incoming end, and be the intelligent grid important channel of realizing user interactions, be the concentrated reflection of the interactive feature of intelligent grid.
In the PFTTH (power optical fiber is to the family) of reality network cable fault handling, traditional OTDR(optical time domain reflectometer) can't satisfy the requirement of the real time on-line monitoring of Access Network multiple branch circuit, unidirectional high loss, usually occur because finding quickly and accurately the geographic position, trouble spot to incur loss through delay accident treatment, cause losing the situation of increase.Simultaneously, the OPLC cable have distributed network wide, cross over that geographic range is large, fault sporadic strong, the Daily Round Check difficulty is large, the disaster loss is large and recover the high characteristics of cost.Therefore, how real time on-line monitoring optical cable and cable running status, judge fast, intuitively, exactly and find the geographic position of PFTTH network cable and transmission cable trouble spot just to become the key point of OPLC fault diagnosis and on-line temperature monitoring, conscientiously realize the integrated management to transport network resources.
Summary of the invention
The object of the invention is to overcome the deficiency that above-mentioned prior art exists, a kind of novel intelligent assembly type fault diagnosis and In-Line Temperature Measure System are provided.Intelligent platform of the present invention wants to realize fault diagnosis and the temperature measurement on-line function to optical fiber composite low-voltage cable OPLC, and can be integrated into same monitor supervision platform and go up and realize this monitoring.
For achieving the above object, technical scheme provided by the invention is as follows.
Described intelligent assembly type fault diagnosis and In-Line Temperature Measure System comprise: at first be provided with a total power supply place in the test zone, optical fiber composite low-voltage cable passes into respectively to the different user end from described total power supply place; In described total power supply place, be provided with an intelligence set monitor supervision platform, described intelligence set monitor supervision platform connects respectively the first host computer and the second host computer, described the first host computer connects the fault diagnosis main frame, and the second host computer connects the temperature measurement on-line main frame; Optical fiber in described fault diagnosis main frame and the optical fiber composite low-voltage cable is connected; Described temperature measurement on-line main frame is connected with temperature-measuring optical fiber, and described temperature-measuring optical fiber is laid in the surface of optical fiber composite low-voltage cable.
Described fault diagnosis main frame comprises: laser instrument, wavelength division multiplexer, circulator and data processing unit, optical line terminal is connected in wavelength division multiplexer, this wavelength division multiplexer is connected to Optical Distribution Network by trunk optical fiber, be provided with along separate routes assembly of light in the Optical Distribution Network, the light splitting branch road that light shunt assembly is told is connected to corresponding optical network unit by shunt optical fiber respectively, and the shunt optical fiber between each light splitting branch road and optical network unit is provided with a reflecting element; Described wavelength division multiplexer also is connected on the circulator port in three ports, the output terminal of two other port difference connecting laser of this circulator and the input end of optical splitter, described optical splitter is provided with the two-way output port, first via output port connects the first photodetection module successively, first signal amplification module and the first data acquisition unit, the the second road output port connects the second photodetection module successively, secondary signal amplification module and the second data acquisition unit, the output terminal of described the first data acquisition unit and the second data acquisition unit all is connected to data processing unit.
Described temperature measurement on-line main frame comprises: pulsed laser, the Raman filtering device, the hyperchannel switching device, the high-frequency low noise photoelectric commutator, high-speed data acquistion system and high-speed data processing unit, the laser of described pulsed laser emission enters in the temperature measuring optical cable through Raman filtering device and hyperchannel switching device, the signal that reflects in the temperature measuring optical cable transfers in the high-frequency low-noise sound photoelectric commutator through the Raman filtering device again, the feedback signal of the process opto-electronic conversion of high-frequency low-noise sound photoelectric commutator output is connected to high-speed data acquistion system, and the output of high-speed data acquistion system is connected to the high-speed data processing unit.
The monitoring optical cable that is connected with described fault diagnosis main frame is single mode fiber cable, uses band or nylon rope will monitor optical cable and closely is fixed in the optical fiber composite low-voltage cable surface of registering one's residence.
The temperature measuring optical cable that is connected with described temperature measurement on-line main frame is multimode optical cable, and described temperature measuring optical cable is surperficial with the loop that band or nylon rope closely are fixed in cable under test, and temperature measuring optical cable is both as temperature sensing optical cable, simultaneously also as the signal light transmission cable.
Described reflecting element can be a wavelength division multiplexer, or an optical filter, or fiber grating.
Based on technique scheme, the present invention has following advantage: the present invention is the platform of a kind of intelligence set fault diagnosis and temperature measurement on-line function, it adopts advanced distributed optical fiber temperature measurement technology and optical time domain reflection technology that OPLC is carried out on-line monitoring, make it to the difference control and measuring of the different districts territory in the same test zone, and adopt same identical monitor supervision platform to finish monitoring, it is high to have the Intelligent integrated degree, easy to operate, the in real time effective advantage of monitoring.Can fully satisfy the requirement of OPLC transmission network adapted electricity and fiber-optic communications traffic performance evaluation and management, conscientiously realize the integrated management to transport network resources
Description of drawings
Fig. 1 is the structure connection diagram of the present invention's intelligence assembly type fault diagnosis and In-Line Temperature Measure System.
Fig. 2 is the structural representation of the fault diagnosis part among the present invention.
Fig. 3 is the structural representation of the temperature measurement on-line part among the present invention.
Embodiment
Below we come the present invention done further with specific embodiment by reference to the accompanying drawings and elaborate.
As shown in Figure 1, for intelligent platform of the present invention, as precondition, set up a total power supply place in test zone, optical fiber composite low-voltage cable passes into respectively to the different user end from this total power supply place.The present invention is provided with an intelligence set monitor supervision platform 21 in described total power supply place, this intelligence set monitor supervision platform connects respectively the first host computer 22 and the second host computer 23, described the first host computer 22 connects fault diagnosis main frame 24, the second host computer 23 connects temperature measurement on-line main frame 25, optical fiber in described fault diagnosis main frame 24 and the described optical fiber composite low-voltage cable is connected, described temperature measurement on-line main frame 25 is connected with temperature-measuring optical fiber, and this temperature-measuring optical fiber is laid in the surface of described optical fiber composite low-voltage cable.
Described the first host computer 22 is provided with the upper software module of the health status of monitoring section optical fiber.The second host computer 23 is provided with the scanning of realization abnormity point and the upper software module that judgement, warning output function, DTS main frame temperature measurement data gather.
In the present invention, OTDR test be by the utilizing emitted light pulse in optical fiber, then receive the information of returning at the OTDR port and carry out.When light pulse is transmitted, can produce scattering, reflection owing to character, connector, abutment, bending or other similar event of optical fiber itself in optical fiber.Wherein the scattering of a part and reflection will turn back among the OTDR.The useful information that returns is measured by the detector of OTDR, and they are just as the time on the diverse location in the optical fiber or curve segment.From transmitting signals to the used time of return signal, determine again the speed of light in glass substance, just can calculate distance.
Distributed optical fiber temperature measurement uses the interior glass core of optical pulse irradiation optical fiber of a characteristic frequency.The thermometric main frame is realized monitoring to exterior temperature change by the variation of measuring Raman diffused light dorsad.In time domain, utilize the OTDR technology, according to light in optical fiber transfer rate and the mistiming between incident light and the backward Raman scattering light, can different temperature spots be positioned, so just can obtain temperature and the accurately location of whole optical fiber on along the line.
The monitoring optical cable that is connected with described fault diagnosis main frame is single mode fiber cable, uses band or nylon rope will monitor optical cable and closely is fixed in the OPLC cable surface of registering one's residence.
The temperature measuring optical cable that is connected with described temperature measurement on-line main frame is multimode optical cable, and described temperature measuring optical cable is surperficial with the loop that band or nylon rope closely are fixed in cable under test, and temperature measuring optical cable is both as temperature sensing optical cable, simultaneously also as the signal light transmission cable.
Fig. 2 is the structure catenation principle synoptic diagram of the fault diagnosis part among the present invention.As seen from the figure, have in the included optical-fiber network of described fault diagnosis main frame 24: optical line terminal (OLT) 4, wavelength division multiplexer 3, Optical Distribution Network (ODN) 6 and optical network unit (ONU) 8.Wherein, optical line terminal 4 is connected on the wavelength division multiplexer 3, and this wavelength division multiplexer 3 is connected to Optical Distribution Network 6 by trunk optical fiber 5.Be provided with along separate routes assembly of light in Optical Distribution Network 6, the light splitting branch road that light shunt assembly is told is connected on the corresponding optical network unit 8 by shunt optical fiber respectively.
Judge the branch's branch road that breaks down in order to reach, we arrange a reflecting element 7 by the shunt optical fiber between each light splitting branch road and optical network unit 8.Reflecting element 7 can be a wavelength division multiplexer, also can be an optical filter, can also the choice for use fiber grating.Its effect is that the monitoring light signal on the light splitting branch road is reflected back, carry out extraction and the analysis of signal through optical splitter, photodetection module, signal amplification module, data acquisition unit, data processing unit, obtain the reflective information of every branch's light path, and then accurately judge and definite fault branch light path.
Above-mentioned wavelength division multiplexer 3 also is connected on the circulator 2, is provided with three ports at circulator 2, and wavelength division multiplexer 3 then connects one of them port.The output terminal of two other port difference connecting laser 1 of this circulator 2 and the input end of optical splitter 9.
Above-mentioned optical splitter 9 is provided with the two-way output port, and its first via output port connects the first photodetection module 10, first signal amplification module 11 and the first data acquisition unit 12 successively.And the second road output port connects the second photodetection module 13, secondary signal amplification module 14 and the second data acquisition unit 15 successively.The output terminal of above-mentioned the first data acquisition unit 12 and the second data acquisition unit 15 all is connected to data processing unit 16.
Laser instrument 1 injects the monitoring light signal of two kinds of distinct pulse widths and power successively in the trunk optical fiber 5, wherein the slightly wide laser pulse of a kind of output pulse width is used for the detection to backscatter signals, and the extremely narrow laser pulse of another kind of output pulse width is used for the detection to reflected signal.Utilize optical splitter 9 that backscatter signals and the reflected signal that returns is divided into two paths of signals by splitting ratio among the present invention, wherein first via signal is input in the data processing unit 16 through the first photodetector 10, first signal amplification module 11 and the first data acquisition unit 12; The the second road signal is input in the data processing unit 16 through the second photodetector 13, secondary signal amplification module 14 and the second data acquisition unit 15.
The processing of 16 pairs of first via signals of data processing unit adopts the software filtering algorithm to eliminate faint backscatter signals, the light signal that is reflected back by the reflecting element of every light splitting branch road by calculating, analyze passive optical network PON, thereby obtain the position of every branch's light path optical network unit and the specifying information of reflected signal, and then judgement and definite fault branch light path.16 pairs of first via signals of data processing unit and the second road signal are processed successively, behind the first via of the finishing dealing with signal result are stored in the buffer memory, then process the second road signal, and then call two-way and process rear information output result.
The method of judging the light splitting branch road is as follows: in monitoring device, eliminate the dorsad impact of loose chrominance signal, concerning in the waveform between reflected signal and the transmission range on each light splitting branch road, the corresponding light splitting branch road of each crest.In case the situation that crest disappears appears in every light splitting branch road, shows that then this light splitting branch road breaks down, and according to corresponding relation, can judge the light splitting branch road that breaks down.
16 pairs of the second road signals of data processing unit adopt progressive mean, software filtering scheduling algorithm, the backscatter signals of extraction whole passive optical network line from the optical line terminal to the optical network unit, to obtain the light loss data message of circuit, the light signal that removal is reflected back by the reflecting element of every branch's light path, and then judge and the trouble spot of location optical network line.Among backscatter signals and the transmission range corresponding relation figure, the weak aggravation of an end somewhere light loss presents unexpected downslide on the figure, shows that then this place breaks down, and according to the figure corresponding position that glides, judges the particular location that breaks down.The above-mentioned location point that utilizes the backscatter signals judgement to break down is used more common in DTS system (temperature-measuring system of distributed fibers), mentions at the patent ZL201020128219.7 of first to file.
The workflow of optical fiber temperature-measurement part: temperature measuring optical cable is applied on the OPLC cable, by the measurement to the cable surface temperature, in conjunction with autonomous current-carrying capacity algorithm, can provides in real time tested cable inner conductor temperature.The optical fiber temperature-measurement main frame is used for sending laser signal, surveys the light signal that returns, and this light signal is carried out demodulation, signal processing, obtains temperature signal.
As shown in Figure 3, described temperature measurement on-line main frame 25 comprises hyperchannel switching device, Raman Raman filtering device, pulsed laser, high-frequency low noise photoelectric commutator, high-speed data acquistion system, high-speed data processing unit, mainly realizes the functions such as Temperature of Power Cables data acquisition, processing, identification and the output of reporting to the police.Temperature measuring optical cable is used for detecting material state parameter information both as sensing element, again as telecommunication media, is used for transmission parameter information.The laser of described pulsed laser emission enters in the temperature measuring optical cable through Raman filtering device and hyperchannel switching device, the signal that reflects in the temperature measuring optical cable transfers in the high-frequency low-noise sound photoelectric commutator through the Raman filtering device again, feedback signal through opto-electronic conversion transfers to high-speed data acquistion system, and the signal of high-speed data acquistion system collection transfers in the high-speed data processing unit.
To sum up, the present invention adopts advanced distributed optical fiber temperature measurement technology and optical time domain reflection technology that OPLC is carried out on-line monitoring, and it is high to have the Intelligent integrated degree, easy to operate, the in real time effective advantage of monitoring.
Claims (6)
1. intelligent assembly type fault diagnosis and In-Line Temperature Measure System is characterized in that: be provided with a total power supply place in the test zone, optical fiber composite low-voltage cable passes into respectively to the different user end from described total power supply place; In described total power supply place, be provided with an intelligence set monitor supervision platform (21), described intelligence set monitor supervision platform (21) connects respectively the first host computer (22) and the second host computer (23), described the first host computer (22) connects fault diagnosis main frame (24), and the second host computer (23) connects temperature measurement on-line main frame (25); Optical fiber in described fault diagnosis main frame (24) and the optical fiber composite low-voltage cable is connected; Described temperature measurement on-line main frame (25) is connected with temperature-measuring optical fiber, and described temperature-measuring optical fiber is laid in the surface of optical fiber composite low-voltage cable.
2. intelligent assembly type fault diagnosis according to claim 1 and In-Line Temperature Measure System, it is characterized in that, described fault diagnosis main frame comprises: laser instrument (1), wavelength division multiplexer (3), circulator (2) and data processing unit (16), optical line terminal (4) is connected in wavelength division multiplexer (3), this wavelength division multiplexer (3) is connected to Optical Distribution Network (6) by trunk optical fiber (5), be provided with along separate routes assembly of light in the Optical Distribution Network (6), the light splitting branch road that light shunt assembly is told is connected to corresponding optical network unit (8) by shunt optical fiber respectively, and the shunt optical fiber between each light splitting branch road and optical network unit (8) is provided with a reflecting element (7); Described wavelength division multiplexer (3) also is connected to a port in upper three ports of circulator (2), the output terminal of two other port difference connecting laser (1) of this circulator (2) and the input end of optical splitter (9), described optical splitter (9) is provided with the two-way output port, first via output port connects the first photodetection module (10) successively, first signal amplification module (11) and the first data acquisition unit (12), the the second road output port connects the second photodetection module (13) successively, secondary signal amplification module (14) and the second data acquisition unit (15), the output terminal of described the first data acquisition unit (12) and the second data acquisition unit (15) all is connected to data processing unit (16).
3. intelligent assembly type fault diagnosis according to claim 1 and In-Line Temperature Measure System, it is characterized in that, described temperature measurement on-line main frame comprises: pulsed laser, the Raman filtering device, the hyperchannel switching device, the high-frequency low noise photoelectric commutator, high-speed data acquistion system and high-speed data processing unit, the laser of described pulsed laser emission enters in the temperature measuring optical cable through Raman filtering device and hyperchannel switching device, the signal that reflects in the temperature measuring optical cable transfers in the high-frequency low-noise sound photoelectric commutator through the Raman filtering device again, the feedback signal of the process opto-electronic conversion of high-frequency low-noise sound photoelectric commutator output is connected to high-speed data acquistion system, and the output of high-speed data acquistion system is connected to the high-speed data processing unit.
4. intelligent assembly type fault diagnosis according to claim 1 and In-Line Temperature Measure System, it is characterized in that, the monitoring optical cable that is connected with described fault diagnosis main frame is single mode fiber cable, uses band or nylon rope will monitor optical cable and closely is fixed in the optical fiber composite low-voltage cable surface of registering one's residence.
5. intelligent assembly type fault diagnosis according to claim 1 and In-Line Temperature Measure System, it is characterized in that, the temperature measuring optical cable that is connected with described temperature measurement on-line main frame is multimode optical cable, described temperature measuring optical cable closely is fixed in the surface, loop of cable under test with band or nylon rope, temperature measuring optical cable is both as temperature sensing optical cable, simultaneously also as the signal light transmission cable.
6. intelligent assembly type fault diagnosis according to claim 1 and In-Line Temperature Measure System is characterized in that, described reflecting element (7) is a wavelength division multiplexer, or optical filter, or fiber grating.
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| CN105758552A (en) * | 2014-07-08 | 2016-07-13 | 国网山东省电力公司青岛供电公司 | Long-range optical fiber cable temperature detection and alarm method |
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| CN105758552A (en) * | 2014-07-08 | 2016-07-13 | 国网山东省电力公司青岛供电公司 | Long-range optical fiber cable temperature detection and alarm method |
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| CN102928740B (en) | 2015-08-26 |
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