CN109557426A - A kind of electric cable stoppage detection system based on inductive power supply - Google Patents
A kind of electric cable stoppage detection system based on inductive power supply Download PDFInfo
- Publication number
- CN109557426A CN109557426A CN201710880990.6A CN201710880990A CN109557426A CN 109557426 A CN109557426 A CN 109557426A CN 201710880990 A CN201710880990 A CN 201710880990A CN 109557426 A CN109557426 A CN 109557426A
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- CN
- China
- Prior art keywords
- cable
- electric
- power supply
- circuit
- optical fiber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0425—Test clips, e.g. for IC's
-
- 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
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/083—Locating faults in cables, transmission lines, or networks according to type of conductors in cables, e.g. underground
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
Abstract
The electric cable stoppage detection system based on inductive power supply that the invention discloses a kind of, cable is clamped using clamping part, and in the place setting ultrasonic sensor other than cable safe distance, ultrasonic sensor conducts the pressure wave signal that on-line operation cable answers cable core defect to generate when leading to shelf depreciation by optical fiber, the signal that ultrasonic sensor will test is sent to supersonic wave analyzer and is tested and analyzed, the result finally and in advance demarcated is compared, and determines electric cable stoppage degree.The present invention, can be in cable on-line operation by special cable cleat, the defect of safe detection cable, and the conduction of sound wave is carried out by optical fiber, and detection success rate is significantly larger than the test result under cable off-line state.It is realized from cable by power supply circuit simultaneously and takes electric energy supply, can satisfy working long hours for complex condition.
Description
Technical field
The electric cable stoppage detection system based on inductive power supply that the present invention relates to a kind of.
Background technique
With the rapid development of electric system and the progress of reconstruction of the old city town engineering, power cable answering in electric power networks
With more extensively.The basic structure of power cable includes four core, insulating layer, shielded layer and protective layer parts.Wherein core
That is conductor is the part for transmitting electric energy in power cable, is the primary structure of cable.Insulating layer by core and it is extraneous electrically every
From.Shielded layer includes conductor shield and insulation screen, is generally present in 15kV and the above cable.Protective layer is for preventing
The only destruction of the infiltration of extraneous impurity and moisture and external force.
Power cable has low-voltage cable (35kV and following electric line), mesolow cable according to voltage class classification
(35kV and following), high-tension cable (110kV or more), extra-high-tension cable (275~800kV), extra-high-tension cable (1000kV and
More than).
Paper oil insulation cable, plastic insulated cable and cabtyre cable can be divided into according to insulating materials power cable.
Wherein paper oil insulation cable application history longest.It is safe and reliable, and long service life is cheap.Major defect be laying by
Drop limitation.Plastic insulated cable is mainly used for low-voltage cable, and common insulating materials has polyvinyl chloride, polyethylene, crosslinking poly-
Ethylene.Elasticity is good for cabtyre cable, is frequently bended the small laying place of radius suitable for movement.China's early application
It has mostly been paper oil insulation cable, but since 1970, crosslinked polyethylene (XLPE) power cable is widely applied, and is gradually taken
For the status of paper oil insulation cable.XLPE cable electric property is superior, with breakdown field strength is high, dielectric loss is small, carries
The advantages that flow is big is thus widely used.However, after cable puts into operation, due to insulation ag(e)ing is rotten, overheat,
Mechanical damage etc. can make cable insulation degradation in operation.In order to prevent since insulation degradation causes cable interruption of service, need
At-once monitor is carried out to the operating status of cable.Monitoring system controls the quality of cable and its attachment.
Summary of the invention
Goal of the invention: it is directed to the above-mentioned prior art, a kind of electric cable stoppage detection system based on inductive power supply is proposed, is used for
The shelf depreciation defect of detection cable, and realize that electric energy is obtained from detection cable carries out self-powered.
Technical solution: a kind of electric cable stoppage detection system based on inductive power supply, including insulated cable fixture, the insulation
Cable cleat includes the clamping part for clamping round cable, and clamping part end is connected with extension, and the extension is vertically to be detected
Cable, the cross bar of extension end profile connection parallel cable, the end of the cross bar is solid equipped with ultrasonic sensor
Determine structure, the test section of the ultrasonic sensor is connected with optical fiber, and the end of the optical fiber resists cable to be detected, described
The signal output end of ultrasonic sensor connects supersonic wave analyzer, and the result demarcated in advance is compared, and determines that cable lacks
The degree of falling into；
It further include power supply circuit, the power supply circuit includes current transformer, current rectifying and wave filtering circuit, voltage regulator circuit and electric power bullet
Spring circuit；The current transformer from the high-tension cable of on-line operation for obtaining electric energy, the electric power spring circuit connection
The output end of the current transformer, the critical loads end of the electric power spring circuit connect the defeated of the electric rectification filter circuit
Enter end, the output end of the current rectifying and wave filtering circuit connects voltage regulator circuit, the confession for being connected to each module of the current rectifying and wave filtering circuit
Electric end.
Further, several ultrasonic sensors are fixed along extension length direction interval on the extension, each
The test section of ultrasonic sensor is all connected with an optical fiber, and the end of optical fiber, which is spaced, resists one position of cable to be detected,
The signal of all ultrasonic sensors exports the acquired serial line interface for blocking and being output to supersonic wave analyzer.
Further, the end cross-sectional that the optical fiber resists cable to be detected is greater than this body section of optical fiber.
Further, the non-critical loads end connection battery or flywheel accumulator of the electric power spring circuit.
The utility model has the advantages that the electric cable stoppage detection system of the invention based on inductive power supply, clamps cable using clamping part,
And in the place setting ultrasonic sensor other than cable safe distance, ultrasonic sensor is conducted online by optical fiber
The pressure wave signal that operation cable answers cable core defect to generate when leading to shelf depreciation, the signal that ultrasonic sensor will test
It is sent to supersonic wave analyzer to be tested and analyzed, the result finally and in advance demarcated is compared, and determines electric cable stoppage degree.
The present invention, can be in cable on-line operation by special cable cleat, the defect of safe detection cable, and passes through optical fiber
The conduction of sound wave is carried out, detection success rate is significantly larger than the test result under cable off-line state.Pass through power supply circuit simultaneously
It is realized from cable and takes electric energy supply, can satisfy working long hours for complex condition.
Specific embodiment
Further explanation is done to the present invention below.
A kind of electric cable stoppage detection system based on inductive power supply, including insulated cable fixture, insulated cable fixture include
The clamping part of round cable is clamped, clamping part end is connected with extension, the vertical cable to be detected of extension, extension end
Side connects the cross bar of parallel cable, and the end of cross bar is equipped with ultrasonic sensor fixed structure.The detection of ultrasonic sensor
Portion is connected with optical fiber, and the end of optical fiber resists cable to be detected, and the signal output end of ultrasonic sensor connects ultrasonic wavelength-division
Analyzer, and the result demarcated in advance are compared, and determine electric cable stoppage degree.
It further include power supply circuit, power supply circuit includes current transformer, current rectifying and wave filtering circuit, voltage regulator circuit and electric power bullet
Spring circuit.Current transformer from the high-tension cable of on-line operation for obtaining electric energy, electric power spring circuit connection Current Mutual Inductance
The output end of device, the critical loads end of electric power spring circuit connect the input terminal of the electric rectification filter circuit, rectifying and wave-filtering electricity
The output end on road connects voltage regulator circuit, the feeder ear for being connected to each module of current rectifying and wave filtering circuit.Current transformer passes through electromagnetism
Induction carries out taking electricity from the cable of on-line operation, and the direct current that 5V is then converted to after rectified filtered electrical and steady pressure treatment is permanent
Piezoelectricity.It is detected the mutation of voltage in cable in order to prevent, joined electric power spring circuit in power supply module, electric power spring can make
It obtains critical loads voltage to be controlled in the range of regulation, while the fluctuation of voltage being transferred in non-critical loads, and is automatic
The power consumption of non-critical loads is adjusted, the Auto-matching of generated energy and electricity consumption is realized, to protect whole system steady operation.
Further, several ultrasonic sensors, each ultrasonic sensor are fixed along extension length direction interval
Test section be all connected with an optical fiber, the end of optical fiber, which is spaced, resists one position of cable to be detected, and optical fiber resists to be checked
The end cross-sectional of the cable of survey is greater than this body section of optical fiber, and the acquired card of signal output of all ultrasonic sensors is output to super
The serial line interface of sonic analyzer.
Electric cable stoppage detection system of the invention clamps cable using clamping part, and apart from cable safe distance with
Outer place setting ultrasonic sensor, ultrasonic sensor, which conducts on-line operation cable by optical fiber, answers cable core defect to lead
The pressure wave signal generated when shelf depreciation is caused, the signal that ultrasonic sensor will test is sent to supersonic wave analyzer progress
It tests and analyzes, the result finally and in advance demarcated is compared, and determines electric cable stoppage degree.Since the present invention is using online
Detection scheme, and the ultrasonic wave that cable local discharge generates is smaller, therefore the present invention carries out the conduction of sound wave, detection by optical fiber
Success rate is significantly larger than the test result under cable off-line state.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (4)
1. a kind of electric cable stoppage detection system based on inductive power supply, it is characterised in that: including insulated cable fixture, the insulation
Cable cleat includes the clamping part for clamping round cable, and clamping part end is connected with extension, and the extension is vertically to be detected
Cable, the cross bar of extension end profile connection parallel cable, the end of the cross bar is solid equipped with ultrasonic sensor
Determine structure, the test section of the ultrasonic sensor is connected with optical fiber, and the end of the optical fiber resists cable to be detected, described
The signal output end of ultrasonic sensor connects supersonic wave analyzer, and the result demarcated in advance is compared, and determines that cable lacks
The degree of falling into；
It further include power supply circuit, the power supply circuit includes current transformer, current rectifying and wave filtering circuit, voltage regulator circuit and electric power bullet
Spring circuit；The current transformer from the high-tension cable of on-line operation for obtaining electric energy, the electric power spring circuit connection
The output end of the current transformer, the critical loads end of the electric power spring circuit connect the defeated of the electric rectification filter circuit
Enter end, the output end of the current rectifying and wave filtering circuit connects voltage regulator circuit, the confession for being connected to each module of the current rectifying and wave filtering circuit
Electric end.
2. the electric cable stoppage detection system according to claim 1 based on inductive power supply, it is characterised in that: the extension
On along extension length direction interval fix several ultrasonic sensors, the test section of each ultrasonic sensor is all connected with one
Root optical fiber, the end of optical fiber, which is spaced, resists one position of cable to be detected, and the signal of all ultrasonic sensors exports warp
Capture card is output to the serial line interface of supersonic wave analyzer.
3. the electric cable stoppage detection system according to claim 1 or 2 based on inductive power supply, it is characterised in that: the light
The end cross-sectional that fibre resists cable to be detected is greater than this body section of optical fiber.
4. the electric cable stoppage detection system according to claim 1 or 2 based on inductive power supply, it is characterised in that: the electricity
The non-critical loads end connection battery or flywheel accumulator of power spring circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710880990.6A CN109557426A (en) | 2017-09-26 | 2017-09-26 | A kind of electric cable stoppage detection system based on inductive power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710880990.6A CN109557426A (en) | 2017-09-26 | 2017-09-26 | A kind of electric cable stoppage detection system based on inductive power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109557426A true CN109557426A (en) | 2019-04-02 |
Family
ID=65862737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710880990.6A Withdrawn CN109557426A (en) | 2017-09-26 | 2017-09-26 | A kind of electric cable stoppage detection system based on inductive power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109557426A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109917235A (en) * | 2019-04-22 | 2019-06-21 | 广东电网有限责任公司 | A kind of cable slack layer electric conductivity defect inspection method |
| CN110736901A (en) * | 2019-10-09 | 2020-01-31 | 河海大学 | Cable partial discharge distributed online monitoring and positioning method based on phi-OTDR principle |
| CN112485583A (en) * | 2020-10-23 | 2021-03-12 | 邹平市供电有限公司 | Method for detecting working state of high-voltage cable |
| CN112666432A (en) * | 2020-12-30 | 2021-04-16 | 国网河南省电力公司南阳供电公司 | Cable joint discharge trace trend analysis method based on pressure wave detection |
-
2017
- 2017-09-26 CN CN201710880990.6A patent/CN109557426A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109917235A (en) * | 2019-04-22 | 2019-06-21 | 广东电网有限责任公司 | A kind of cable slack layer electric conductivity defect inspection method |
| CN109917235B (en) * | 2019-04-22 | 2021-06-25 | 广东电网有限责任公司 | Method for detecting conductivity defect of cable buffer layer |
| CN110736901A (en) * | 2019-10-09 | 2020-01-31 | 河海大学 | Cable partial discharge distributed online monitoring and positioning method based on phi-OTDR principle |
| CN112485583A (en) * | 2020-10-23 | 2021-03-12 | 邹平市供电有限公司 | Method for detecting working state of high-voltage cable |
| CN112666432A (en) * | 2020-12-30 | 2021-04-16 | 国网河南省电力公司南阳供电公司 | Cable joint discharge trace trend analysis method based on pressure wave detection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190402 |
|
| WW01 | Invention patent application withdrawn after publication |