CN109116194A - High-speed rail transforming plant cable shelf depreciation positioning device based on the asynchronous triggering of optical fiber - Google Patents
High-speed rail transforming plant cable shelf depreciation positioning device based on the asynchronous triggering of optical fiber Download PDFInfo
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- CN109116194A CN109116194A CN201810669393.3A CN201810669393A CN109116194A CN 109116194 A CN109116194 A CN 109116194A CN 201810669393 A CN201810669393 A CN 201810669393A CN 109116194 A CN109116194 A CN 109116194A
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- partial discharge
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 22
- 230000001131 transforming effect Effects 0.000 title claims abstract description 9
- 238000004891 communication Methods 0.000 claims abstract description 25
- 238000007405 data analysis Methods 0.000 claims abstract description 12
- 238000006243 chemical reaction Methods 0.000 claims abstract description 11
- 239000000835 fiber Substances 0.000 claims abstract description 7
- 230000003750 conditioning effect Effects 0.000 claims abstract description 4
- 230000003321 amplification Effects 0.000 claims abstract description 3
- 238000001914 filtration Methods 0.000 claims abstract description 3
- 230000006698 induction Effects 0.000 claims abstract description 3
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 3
- 230000005622 photoelectricity Effects 0.000 claims description 6
- 230000001960 triggered effect Effects 0.000 claims description 4
- 102100025142 Beta-microseminoprotein Human genes 0.000 claims description 3
- 101000576812 Homo sapiens Beta-microseminoprotein Proteins 0.000 claims description 3
- 230000006855 networking Effects 0.000 claims description 3
- 230000001939 inductive effect Effects 0.000 claims description 2
- 238000003745 diagnosis Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 6
- 230000001360 synchronised effect Effects 0.000 description 5
- 238000004364 calculation method Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004422 calculation algorithm Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1218—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing using optical methods; using charged particle, e.g. electron, beams or X-rays
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- General Physics & Mathematics (AREA)
- Locating Faults (AREA)
Abstract
High-speed rail transforming plant cable shelf depreciation positioning device based on the asynchronous triggering of optical fiber, including High Frequency Current Sensor, partial discharge collection module, triggering and communication module, data analysis module；After partial discharge collection module is using digital filtering and amplification conditioning, the local discharge signal of analog-to-digital conversion High Frequency Current Sensor induction, host computer is sent data to by triggering and communication module again, the data analysis meter of upper computer software calculates synchrodata and shelf depreciation positioning；Trigger signal of the present invention passes through optical fiber successively triggering collection device, acquisition device successively acquires local discharge signal and is transmitted through the fiber to host computer, after host computer is according to delay compensation intrinsic between acquisition device, the ns grade synchronization accuracy that can be realized acquisition data, to carry out partial discharge position diagnosis.
Description
Technical field
The invention belongs to power cable Partial Discharge Detecting Technology fields, and in particular to the high-speed rail based on the asynchronous triggering of optical fiber
Transforming plant cable shelf depreciation positioning device.
Background technique
Shelf depreciation as detection high voltage power cable insulation degradation one of important parameter, can correctly detect and
Particularly important with fault location, shelf depreciation positioning is mainly divided to two kinds, and one is traveling wave methods, that is, passes through detection shelf depreciation
The time difference of signal, calculating partial discharge position, another kind are the both ends in discharge source while examining afterwards back and forth for original signal and signal
Signal is surveyed, discharge position is calculated according to the time difference of two synchronization signals；Traveling wave method only needs an equipment, and method is simple, but existing
Field detecting electromagnetic interference is big, and local discharge signal is smaller, and the signal of return is easily flooded by ambient noise, it is difficult to it positions, and it is double
The key of end synchronous acquisition positioning is two equipment synchronization accuracies, thus the positioning of most of both-end synchronous acquisitions essentially consist in as
What improves the synchronization accuracy of equipment.
Summary of the invention
For in existing both-end synchronous acquisition localization method, the purpose of the present invention is to provide be based on the asynchronous triggering of optical fiber
High-speed rail transforming plant cable shelf depreciation positioning device, trigger signal passes through optical fiber successively triggering collection device, acquisition device
It successively acquires local discharge signal and is transmitted through the fiber to host computer, host computer is mended according to time delay intrinsic between acquisition device
After repaying, the ns grade synchronization accuracy of acquisition data can be realized, to carry out partial discharge position diagnosis.
To achieve the goals above, technical scheme is as follows:
High-speed rail transforming plant cable shelf depreciation positioning device based on the asynchronous triggering of optical fiber, including high-frequency current sensing
Device, partial discharge collection module, triggering and communication module, data analysis module；Partial discharge collection module uses digital filtering
After amplification conditioning, the local discharge signal of analog-to-digital conversion High Frequency Current Sensor induction, then will by triggering and communication module
Data are sent to host computer, and the data analysis meter of upper computer software calculates synchrodata and shelf depreciation positioning；
The High Frequency Current Sensor incudes local discharge signal based on Rogowski coil principle, and output end is as office
The input terminal of portion's electric discharge acquisition module；
The partial discharge collection module, has the function of external trigger, with the trigger signal triggered and communication module is transmitted
Start high speed acquisition High Frequency Current Sensor inductive signal, again sends data by triggering and communication module after analog-to-digital conversion
To host computer；
The triggering and communication module has photoelectricity switch function, specifically includes fiber optic communication and photoelectric conversion is raw
At trigger signal, photoelectric conversion and optical fiber networking, triggering partial discharge collection module work；
The data analysis module is handled and is analyzed to the local discharge signal and trigger signal of acquisition, is calculated
It obtains discharge capacity, PRPD, PRPS spectrogram of shelf depreciation, further, collects double-end monitor point waveform, shelf depreciation is determined
Position.
The invention has the benefit that
(1) triggering and communication module described in transmit data using optical fiber, and successively triggering collection card works asynchronously, optical fiber group
Net, can arbitrarily add or eliminating equipment, have good electromagnetism interference, O&M cost is low, advantages of simple structure and simple；
(2) triggering and communication module described in are worked using optical fiber triggering collection card, eliminate time delay intrinsic between equipment,
The synchronization accuracy for reaching ns magnitude, at low cost using photoelectricity switchboard unit network, structure is simple.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the high-speed rail transforming plant cable shelf depreciation positioning device based on the asynchronous triggering of optical fiber of implementation of the invention
Functional block diagram.
Specific embodiment
With reference to the accompanying drawing and specific embodiment the present invention is further described in more detail.
A kind of high-speed rail transforming plant cable shelf depreciation positioning device based on the asynchronous triggering of optical fiber referring to Fig.1, feature
It is comprising High Frequency Current Sensor, partial discharge collection module, triggering and communication module, data analysis module；
The High Frequency Current Sensor, using the local discharge sensor of Rogowski coil principle, output end is as office
The input terminal of portion's electric discharge acquisition module；
The partial discharge collection module, including four-way synchronous acquisition, with triggering and communication module output triggering letter
Number be trigger source, acquisition rate 250MS/s, acquire duration 20ms, by the Wave data of acquisition by triggering and communication module
It is sent to host computer；
The triggering and communication module is photoelectricity switch module, has fiber-optic communications traffic data and photoelectric conversion
Trigger signal is generated, shelf depreciation acquisition mode data are transmitted to host computer by triggering partial discharge collection module work；
The data analysis module is handled and is analyzed to the local discharge signal and power frequency component of acquisition, is calculated
Discharge capacity, PRPD, PRPS spectrogram for obtaining shelf depreciation further calculate shelf depreciation discharge position, collect double-end monitor point
Waveform positions shelf depreciation；
Embodiment
Referring to Fig. 2, High Frequency Current Sensor is socketed on threephase cable attachment ground line or cross connection grounding line；It is high
Frequency current sensor output access partial discharge collection module, partial discharge collection module count the signal that sensor couples
After word filters and amplifies conditioning, then data are transmitted to data analysis module analysis by triggering and communication module and are handled, counted
The both ends Partial Discharge time difference is calculated, obtains shelf depreciation discharge position.
The component in present system is explained one by one below:
1. the High Frequency Current Sensor incudes local discharge signal using Rogowski coil principle, simulation letter is converted to
After number, it is linked into partial discharge collection module input terminal；Sensor frequency band 500k-30MHz；
2. the partial discharge collection module realizes that four-way synchronous high-speed acquires function, acquisition rate 250MS/
S acquires duration 20ms, analog bandwidth 60MHz, and resolution ratio is 12, with the trigger signal triggering triggered and communication module exports
Collecting work；
3. the triggering and communication module have photoelectricity switch function, including fiber optic communication, optical fiber ring network, photoelectricity
Conversion generates trigger signal etc., and shelf depreciation acquisition mode data are transmitted to upper by triggering partial discharge collection module work
Machine；
4. the data analysis module is received the data of shelf depreciation acquisition equipment transmission, is compiled using Labview software
Data analysis and display are write, partial discharge position etc. is calculated.
The partial discharges fault positioning comprising following steps:
1. calculating host computer and each acquisition equipment directly intrinsic time delay first, a set of acquisition device is placed on upper
At machine short distance, distance is ignored, after the apparatus optical fiber networking of next acquisition position is connected, triggering work that no setting is required
Make mode, after host computer sends trigger command, the trigger signal of triggering and communication module generation can be transmitted along optical-fibre channel, then
It is secondary to be back to host computer；
2. host computer receives the data of return, relative time of the start pulse signal apart from starting point is found out, that is, is triggered
Signal is transmitted along optical fiber back and forth apart from the time used, therefore can calculate intrinsic time delay according to distance and spread fiber speed；
3. successively calculating the intrinsic time delay apart from discharge source both ends shelf depreciation acquisition equipment respectively；
4. after host computer sends trigger command, trigger signal successively triggers two acquisition equipment work, data along optical fiber
Host computer is transmitted to again by optical fiber and carries out analytical calculation, finds out the discharge signal of discharge source respectively according to related algorithm, is counted
Calculate arcing distance；
5. the calculation formula of arcing distance is as follows: t2-t1=(L-2 Δ L)/V；Wherein t1, t2 are two acquisition equipment respectively
The time value of discharge signal is calculated, L is the distance between two acquisition equipment, it can be calculated by calculation delay method,
It can measure；Δ L is distance of the discharge source apart from a certain equipment；V is the spread speed of signal in a fiber.
Claims (1)
1. the high-speed rail transforming plant cable shelf depreciation positioning device based on the asynchronous triggering of optical fiber, which is characterized in that including high frequency
Current sensor, partial discharge collection module, triggering and communication module, data analysis module；Partial discharge collection module uses
After digital filtering and amplification conditioning, the local discharge signal of analog-to-digital conversion High Frequency Current Sensor induction, then pass through triggering and logical
Letter module sends data to host computer, and the data analysis meter of upper computer software calculates synchrodata and shelf depreciation positioning；
The High Frequency Current Sensor incudes local discharge signal based on Rogowski coil principle, and output end is put as part
The input terminal of electric acquisition module；
The partial discharge collection module, has the function of external trigger, is started with the trigger signal triggered and communication module is transmitted
Data are sent to by high speed acquisition High Frequency Current Sensor inductive signal, analog-to-digital conversion by triggering and communication module again later
Position machine；
The triggering and communication module has photoelectricity switch function, specifically includes fiber optic communication and photoelectric conversion generates touching
It signals, photoelectric conversion and optical fiber networking, triggering partial discharge collection module work；
The data analysis module is handled and is analyzed to the local discharge signal and trigger signal of acquisition, is calculated
Discharge capacity, PRPD, PRPS spectrogram of shelf depreciation are further collected double-end monitor point waveform, are positioned to shelf depreciation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810669393.3A CN109116194A (en) | 2018-06-26 | 2018-06-26 | High-speed rail transforming plant cable shelf depreciation positioning device based on the asynchronous triggering of optical fiber |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810669393.3A CN109116194A (en) | 2018-06-26 | 2018-06-26 | High-speed rail transforming plant cable shelf depreciation positioning device based on the asynchronous triggering of optical fiber |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110174597A (en) * | 2019-06-27 | 2019-08-27 | 合肥谱仁光电技术有限公司 | A kind of shelf depreciation positioning system and localization method based on fluorescence optical fiber |
| CN111551832A (en) * | 2020-06-01 | 2020-08-18 | 广西电网有限责任公司南宁供电局 | Method and device for high-precision positioning and noise removal of partial discharge of cable |
| CN112666954A (en) * | 2020-12-31 | 2021-04-16 | 上海商汤临港智能科技有限公司 | Intelligent driving device, method, intelligent driving system and driving device |
| CN113238566A (en) * | 2020-12-31 | 2021-08-10 | 上海商汤临港智能科技有限公司 | Intelligent driving system and driving equipment |
| CN113325224A (en) * | 2021-06-24 | 2021-08-31 | 云南电网有限责任公司电力科学研究院 | GIS steep wave measurement system based on optical fiber pulse |
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| CN106124939A (en) * | 2016-06-12 | 2016-11-16 | 西安博源电气有限公司 | Distributed high tension cable partial discharge monitoring and alignment system |
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- 2018-06-26 CN CN201810669393.3A patent/CN109116194A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106124939A (en) * | 2016-06-12 | 2016-11-16 | 西安博源电气有限公司 | Distributed high tension cable partial discharge monitoring and alignment system |
Non-Patent Citations (1)
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| 杨引虎等: "分布式电缆局部放电在线监测系统的研制", 《智慧电力》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110174597A (en) * | 2019-06-27 | 2019-08-27 | 合肥谱仁光电技术有限公司 | A kind of shelf depreciation positioning system and localization method based on fluorescence optical fiber |
| CN111551832A (en) * | 2020-06-01 | 2020-08-18 | 广西电网有限责任公司南宁供电局 | Method and device for high-precision positioning and noise removal of partial discharge of cable |
| CN111551832B (en) * | 2020-06-01 | 2023-06-02 | 广西电网有限责任公司南宁供电局 | Cable partial discharge high-precision positioning and noise removing method and device |
| CN112666954A (en) * | 2020-12-31 | 2021-04-16 | 上海商汤临港智能科技有限公司 | Intelligent driving device, method, intelligent driving system and driving device |
| CN113238566A (en) * | 2020-12-31 | 2021-08-10 | 上海商汤临港智能科技有限公司 | Intelligent driving system and driving equipment |
| CN113325224A (en) * | 2021-06-24 | 2021-08-31 | 云南电网有限责任公司电力科学研究院 | GIS steep wave measurement system based on optical fiber pulse |
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