CN106707128A - Acoustoelectric associated local cable discharge locating device and method - Google Patents
Acoustoelectric associated local cable discharge locating device and method Download PDFInfo
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- CN106707128A CN106707128A CN201710156965.3A CN201710156965A CN106707128A CN 106707128 A CN106707128 A CN 106707128A CN 201710156965 A CN201710156965 A CN 201710156965A CN 106707128 A CN106707128 A CN 106707128A
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- signal
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- frequency current
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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
- G01R31/1227—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 of components, parts or materials
- G01R31/1263—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 of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
- G01R31/1272—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 of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of cable, line or wire insulation, e.g. using partial discharge measurements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
-
- 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
- G01R31/1209—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 acoustic measurements
Abstract
The invention relates to an acoustoelectric associated local cable discharge locating device and method. The acoustoelectric associated local cable discharge locating device comprises a high-frequency current sensor, a high-frequency signal amplifier, an ultrasonic sensor, an ultrasonic signal amplifier, a multi-channel signal collector, a signal conditioner and an upper computer, wherein an output end of the high-frequency current sensor is connected with an input end of the high-frequency signal amplifier; the high-frequency current sensor is used for inducing a high-frequency current signal on a tested cable line; and the high-frequency signal amplifier is used for carrying out amplifying and filtering on the high-frequency current signal transmitted from the high-frequency current sensor. The acoustoelectric associated local cable discharge locating device is reasonable in design, compact in structure and convenient to use.
Description
Technical field
The present invention relates to acoustoelectric combined cable local discharge positioner and method.
Background technology
With the high speed development of power system, power cable is widely used in urban distribution network, particularly high
The amount of laying of piezoelectric forces cable is increasing year by year.Under the present art, power cable line is in production, transport and installation process
In some defects occur unavoidably.Power cable during prolonged high-voltage operation, caused by cable is due to local defect
Insulation Problems, can cause potential potential safety hazard to power system.Partial Discharge Detection is quantitative analysis insulation ag(e)ing degree
One of most effectual way.Therefore, Partial Discharge Detection is carried out to operating cable, the running status of cable is grasped in time, can
To avoid the generation of security incident to greatest extent.The detection method of power cable shelf depreciation mainly include high frequency electric method,
Sasser voltage method, superfrequency method, supercritical ultrasonics technology, optical method etc..However, lacking easy accurate method and apparatus at present to electricity
Cable shelf depreciation is analyzed and positions.
The content of the invention
A kind of acoustoelectric combined cable local discharge positioner, including High Frequency Current Sensor, high-frequency signal amplifier,
Ultrasonic sensor, ultrasonic signal amplifier, multi-channel signal acquiring device, signal conditioner and host computer；
Described High Frequency Current Sensor, its output end is connected with the input of described high-frequency signal amplifier, high frequency electric
Sensor is used to sense the high-frequency current signal on institute's survey cable run, and described high-frequency signal amplifier is used for high frequency electric
The high-frequency current signal that sensor transmissions are come is amplified filtering；
Described ultrasonic sensor, its output end is connected with the input of described ultrasonic signal amplifier, for sensing
Ultrasonic signal on institute's survey cable run, described ultrasonic signal amplifier is used for next to ultrasonic sensor transmission surpassing
Acoustic signals are amplified filtering；
The output end of described high-frequency signal amplifier and ultrasonic signal amplifier respectively with the multi-channel signal acquiring device
Connection, multi-channel signal acquiring device is used to gather the high frequency electric and ultrasonic signal after amplifying；
Described signal conditioner, for receiving high-frequency current signal and ultrasonic wave that the multi-channel signal acquiring device transmission comes
Signal, signal conditioner is nursed one's health high-frequency current signal first, is then touched as initial using the high-frequency current signal of acquisition
Hair value, nurses one's health ultrasonic signal, and by the ultrasound signal transmission after conditioning to host computer, host computer carries out the place of data
Reason and storage.
As the further improvement of above-mentioned technical proposal：
By means of above-mentioned device；Comprise the following steps：
Step a. first, then, by high-frequency signal put by the high-frequency pulse current on High Frequency Current Sensor induction cable circuit
Big device is amplified and filtering process to the high-frequency pulse current signal that High Frequency Current Sensor senses；
Step b. first, transmits the high-frequency current signal for coming in signal conditioner acquisition step a；Secondly, signal conditioner according to
Predetermined level is nursed one's health high-frequency current signal, determines whether local discharge signal；If local discharge signal, by this
Local discharge signal performs step c as the initial trigger value of ultrasonic signal；If without local discharge signal, stopping holding
Row step c；
Step c. performs this step simultaneously after step b or with step b, first, on ultrasonic sensor collection cable run
Ultrasonic signal；Then, filtering and by ultrasonic signal amplifier is amplified to the signal；Secondly, by the ultrasonic wave
Input of the signal transmission to signal picker；
Step d. multi-channel signal acquirings device leads to the ultrasound signal transmission in step c to signal conditioner, signal conditioner
The initial trigger value crossed in step b is nursed one's health and adjusted to ultrasonic signal；
Step e. signal conditioners will nurse one's health and adjust in step d after ultrasound signal transmission to host computer, host computer passes through
The ultrasonic signal is positioned to cable local discharge.
It is of the invention compared with existing cable local discharge detection device, mutually tied with ultrasonic wave as a result of high frequency electric
The method of conjunction, on the one hand make use of high frequency electric method to detect cable local discharge accurately and reliably advantage, on the other hand make use of
Advantage of the supercritical ultrasonics technology in shelf depreciation positioning.Particularly, the conditioning of ultrasonic signal using the high-frequency electrical flow valuve that measures as
Trigger value, effectively eliminates influence of the interference signal to measurement result.Using the solution of the present invention, can fast and accurately determine
The local discharge signal of position power cable.
Beneficial effects of the present invention not limited to this are described, and in order to preferably readily appreciate, are entered in specific embodiment part
More preferably detailed description is gone.
Brief description of the drawings
Fig. 1 is control block diagram of the invention.
Wherein：1st, High Frequency Current Sensor；2nd, high-frequency signal amplifier；3rd, ultrasonic sensor；4th, ultrasonic signal is put
Big device；5th, multi-channel signal acquiring device；6th, signal conditioner；7th, host computer.
Specific embodiment
It is fixed to acoustoelectric combined cable local discharge of the present invention below in conjunction with Figure of description and instantiation
Position apparatus and method make further explanation and explanation.
As shown in figure 1, a kind of acoustoelectric combined cable local discharge positioner, including High Frequency Current Sensor 1, ultrasound
Wave sensor 3, high-frequency signal amplifier 2, ultrasonic signal amplifier 4, multi-channel signal acquiring device 5, signal conditioner 6, on
Position machine 7.
Multi-channel signal acquiring device 5 is gathered and amplifies filter transmission by high-frequency signal amplifier 2 by High Frequency Current Sensor 1
The high-frequency current signal for coming, is subsequently communicated to signal conditioner 6, through the adjusting of signal, judges and analog-to-digital conversion, is transferred to upper
Machine 7, host computer is analyzed to data, processes and stores.
Multi-channel signal acquiring device 5 is also gathered to amplify to transmit by ultrasonic signal amplifier 4 by ultrasonic sensor 3 and
Ultrasonic signal, be subsequently communicated to signal conditioner 6, signal conditioner 6 using the high-frequency signal that measures as signal trigger value,
Adjusting, judging and analog-to-digital conversion for signal is carried out to acquisition ultrasonic signal, be transferred to host computer 7, host computer 7 is carried out to data
Analysis, treatment and storage.
In actual use, the multiplication factor of high-frequency signal amplifier and ultrasonic signal amplifier is preferably set one
Cause.
During work, High Frequency Current Sensor 1 is arranged on cable connector, PC control signal picker 5, collection is put
Big filtered high-frequency current signal, signal conditioner 6 carries out signal and adjusts according to default trigger value to high-frequency signal, then
Judge whether high-frequency current signal caused by shelf depreciation.If it has, then being nursed one's health in this, as to ultrasonic signal
Initial trigger value.Then, the collection of PC control signal picker 5 ultrasonic sensor 3 is passed through ultrasonic signal amplifier 4
It is defeated come ultrasonic signal, signal conditioner 6 adjusted to ultrasonic signal, analyzed and analog-to-digital conversion, and data transfer is to upper
Position machine 7, is analyzed, stores and is judged by host computer 7, determines the partial discharge position on cable run.
Reasonable in design, with low cost, durable, safe and reliable, simple to operate, time saving and energy saving, saving fund of the invention,
Compact conformation and easy to use.
It is, in order to more clearly disclose, and just not enumerated for prior art that the present invention is fully described.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
The present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：It still may be used
Modified with to the technical scheme described in previous embodiment, or equivalent is carried out to which part technical characteristic；Make
It is obvious for those skilled in the art are combined to multiple technical schemes of the invention.And these are changed or replace
Change, do not make the spirit and scope of the essence disengaging embodiment of the present invention technical scheme of appropriate technical solution.
Claims (2)
1. a kind of acoustoelectric combined cable local discharge positioner, it is characterised in that：Including High Frequency Current Sensor (1), height
Frequency signal amplifier (2), ultrasonic sensor (3), ultrasonic signal amplifier (4), multi-channel signal acquiring device (5), signal
Conditioner (6) and host computer (7)；
Described High Frequency Current Sensor (1), its output end is connected with the input of described high-frequency signal amplifier (2), high
High-frequency current signal of the frequency current sensor (1) for sensing on survey cable run, described high-frequency signal amplifier (2) is used
Filtering is amplified in the high-frequency current signal come to High Frequency Current Sensor (1) transmission；
Described ultrasonic sensor (3), its output end is connected with the input of described ultrasonic signal amplifier (4), uses
Ultrasonic signal on sensing institute survey cable run, described ultrasonic signal amplifier (4) is for ultrasonic sensor
(3) transmit the ultrasonic signal for coming and be amplified filtering；
The output end of described high-frequency signal amplifier (2) and ultrasonic signal amplifier (4) respectively with the multi channel signals
Collector (5) is connected, and multi-channel signal acquiring device (5) is for gathering high frequency electric and ultrasonic signal after amplifying；
Described signal conditioner (6), for receive high-frequency current signal that the multi-channel signal acquiring device (5) transmission comes and
Ultrasonic signal, signal conditioner (6) is nursed one's health high-frequency current signal first, is then made with the high-frequency current signal for obtaining
It is initial trigger value, ultrasonic signal is nursed one's health, by the ultrasound signal transmission after conditioning to host computer (7), host computer
(7) treatment and storage of data are carried out.
2. acoustoelectric combined cable local discharge localization method, it is characterised in that:By means of acoustoelectric combined described in claim 1
Cable local discharge positioner；Comprise the following steps：
Step a. first, then, by high frequency believed by the high-frequency pulse current on High Frequency Current Sensor (1) induction cable circuit
Number amplifier (2) is amplified and filtering process to the high-frequency pulse current signal that High Frequency Current Sensor (1) senses；
Step b. first, transmits the high-frequency current signal for coming in signal conditioner (6) acquisition step a；Secondly, signal conditioner
(6) high-frequency current signal is nursed one's health according to predetermined level, determines whether local discharge signal；If shelf depreciation letter
Number, using the local discharge signal as the initial trigger value of ultrasonic signal, perform step c；If without local discharge signal,
Stop performing step c；
Step c. performs this step simultaneously after step b or with step b, first, ultrasonic sensor (3) collection cable run
On ultrasonic signal；Then, filtering and by ultrasonic signal amplifier (4) is amplified to the signal；Secondly, this is surpassed
Acoustic signals are transferred to the input of signal picker；
Step d. multi-channel signal acquirings device (5) adjusts the ultrasound signal transmission in step c to signal conditioner (6), signal
Reason device (6) is nursed one's health and adjusted by the initial trigger value in step b to ultrasonic signal；
Ultrasound signal transmission after step e. signal conditioners (6) will be nursed one's health and adjusted in step d gives host computer (7), upper
Machine (7) is positioned by the ultrasonic signal to cable local discharge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710156965.3A CN106707128A (en) | 2017-03-16 | 2017-03-16 | Acoustoelectric associated local cable discharge locating device and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710156965.3A CN106707128A (en) | 2017-03-16 | 2017-03-16 | Acoustoelectric associated local cable discharge locating device and method |
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| CN106707128A true CN106707128A (en) | 2017-05-24 |
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| CN201710156965.3A Pending CN106707128A (en) | 2017-03-16 | 2017-03-16 | Acoustoelectric associated local cable discharge locating device and method |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107037342A (en) * | 2017-06-15 | 2017-08-11 | 国网四川省电力公司电力科学研究院 | A kind of compound sensor for cable insulation defects detection |
| CN107589352A (en) * | 2017-09-05 | 2018-01-16 | 浙江群力电气有限公司 | The localization method and device of a kind of Partial Discharge Sources |
| CN108092695A (en) * | 2017-12-15 | 2018-05-29 | 浙江维思无线网络技术有限公司 | A kind of power line detection signaling method and device |
| CN108169638A (en) * | 2017-12-29 | 2018-06-15 | 山东中实易通集团有限公司 | A kind of method of live detection shelf depreciation defect type judgement |
| CN108254659A (en) * | 2017-12-25 | 2018-07-06 | 国网电力科学研究院武汉南瑞有限责任公司 | The shelf depreciation of cable and the combined detection system of leakage current and method under high direct voltage |
| CN109490730A (en) * | 2018-12-19 | 2019-03-19 | 国网北京市电力公司 | Cable discharge detection method, device, storage medium and processor |
| CN110161386A (en) * | 2019-05-06 | 2019-08-23 | 贵州电网有限责任公司 | A kind of portable high-pressure cable connector local discharge detection device and method |
| CN110554284A (en) * | 2019-08-23 | 2019-12-10 | 国网江苏省电力有限公司电力科学研究院 | GIS (geographic information System) -based correlation analysis method and system for partial discharge detection mode |
| CN111044861A (en) * | 2019-12-20 | 2020-04-21 | 上饶市中科院云计算中心大数据研究院 | Partial discharge detection method and device |
| CN112305386A (en) * | 2020-10-23 | 2021-02-02 | 国网上海市电力公司 | High-voltage cable live-line detection system and method based on digital twinning technology |
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| CN106501690A (en) * | 2016-10-28 | 2017-03-15 | 国网辽宁省电力有限公司辽阳供电公司 | A kind of XLPE power cables partial discharge diagnostic method and system |
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| CN203249989U (en) * | 2013-03-14 | 2013-10-23 | 辽宁省电力有限公司鞍山供电公司 | Transformer partial discharge on-line monitoring system |
| CN103884970A (en) * | 2014-03-25 | 2014-06-25 | 上海局放软件技术有限公司 | Partial discharge routing inspection device applicable to multiple detection methods |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107037342A (en) * | 2017-06-15 | 2017-08-11 | 国网四川省电力公司电力科学研究院 | A kind of compound sensor for cable insulation defects detection |
| CN107589352A (en) * | 2017-09-05 | 2018-01-16 | 浙江群力电气有限公司 | The localization method and device of a kind of Partial Discharge Sources |
| CN108092695A (en) * | 2017-12-15 | 2018-05-29 | 浙江维思无线网络技术有限公司 | A kind of power line detection signaling method and device |
| CN108254659A (en) * | 2017-12-25 | 2018-07-06 | 国网电力科学研究院武汉南瑞有限责任公司 | The shelf depreciation of cable and the combined detection system of leakage current and method under high direct voltage |
| CN108169638A (en) * | 2017-12-29 | 2018-06-15 | 山东中实易通集团有限公司 | A kind of method of live detection shelf depreciation defect type judgement |
| CN109490730A (en) * | 2018-12-19 | 2019-03-19 | 国网北京市电力公司 | Cable discharge detection method, device, storage medium and processor |
| CN110161386A (en) * | 2019-05-06 | 2019-08-23 | 贵州电网有限责任公司 | A kind of portable high-pressure cable connector local discharge detection device and method |
| CN110554284A (en) * | 2019-08-23 | 2019-12-10 | 国网江苏省电力有限公司电力科学研究院 | GIS (geographic information System) -based correlation analysis method and system for partial discharge detection mode |
| CN111044861A (en) * | 2019-12-20 | 2020-04-21 | 上饶市中科院云计算中心大数据研究院 | Partial discharge detection method and device |
| CN112305386A (en) * | 2020-10-23 | 2021-02-02 | 国网上海市电力公司 | High-voltage cable live-line detection system and method based on digital twinning technology |
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Application publication date: 20170524 |