CN109683067A - A kind of cable insulation automatic monitoring system and application method based on Matlab - Google Patents
A kind of cable insulation automatic monitoring system and application method based on Matlab Download PDFInfo
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- CN109683067A CN109683067A CN201811442814.5A CN201811442814A CN109683067A CN 109683067 A CN109683067 A CN 109683067A CN 201811442814 A CN201811442814 A CN 201811442814A CN 109683067 A CN109683067 A CN 109683067A
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- cable
- measured
- leakage current
- control unit
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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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The cable insulation automatic monitoring system based on Matlab that the present invention relates to a kind of, the test lead of Young's modulus test cell and leakage current testing unit is all connected with the cable fixed cell, the output end of Young's modulus test cell and leakage current testing unit is all connected with one end of control unit, and the other end of control unit connects the host computer.In the present invention, by Young's modulus test cell detection cable insulating materials because of the variation of Young's modulus caused by aging, by leakage current testing unit detection cable insulating materials because crackle, dielectric properties such as change at the variation of leakage current caused by reasons.It is be combined with each other by MATLAB system in each unit and host computer, detect the aging conditions of cable insulation material, by compared with normal data, the ageing state of cable to be measured can be analyzed, entire testing result is accurate, high degree of automation, and convenient for operation and storage, analysis and the output of data.
Description
Technical field
The invention belongs to cable insulation field of measuring technique, automatic more particularly, to a kind of cable insulation based on Matlab
Change monitoring system and application method.
Background technique
In electric system, high-tension cable be responsible for transmission electricity distribution task, high-tension cable reliability of operation and
Safety will directly decide that can system normally run.Cable in operation for a long time by chemical attack, electric field, environment,
The various interior extraneous factors such as fuel factor, which influence the quality of insulation itself having, will occur cracking phenomenon.Usual cable is to be laid with
In underground, once so costs such as the time it takes, money etc. can all increase when accident occur in these cables,
Once the phenomenon that having a power failure so bring loss will can not be estimated.So in order to improve high-tension cable in terms of power supply
Reliability, reduce to the greatest extent because break down caused by loss, then to high-tension cable carry out insulation diagnosis and maintenance then
It is particularly important, and exactly should go the high-tension cable problem being found in budding state first among these, thus
Guarantee entire cable operational safety and health.Currently, can be by Young's modulus test come detection cable insulative polymer material
Degree of aging, by leakage current testing come the leakage current of detection cable, above two mode can be analyzed and obtain cable
Aging, insulation situation.By retrieval, Young's modulus, leakage current are combined together and form automation there are no a kind of
The system of measurement.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide Young's modulus is detected, leakage current detection knot
Be combined, and by MATLAB system realize the aging of cable, insulation analysis a kind of cable insulation based on Matlab from
Dynamicization monitoring system.
Specific technical solution of the present invention is as follows:
A kind of cable insulation automatic monitoring system based on Matlab, it is characterised in that: tested including Young's modulus single
Member, leakage current testing unit, cable fixed cell, control unit and host computer, Young's modulus test cell and leakage current
The test lead of test cell is all connected with the cable fixed cell, Young's modulus test cell and leakage current testing unit it is defeated
Outlet is all connected with one end of control unit, and the other end of control unit connects the host computer；
The cable fixed cell is for fixing sample to be measured and connection power supply, and Young's modulus test cell is for detecting
The degree of aging of the insulating materials of sample to be measured, leakage current testing unit are used to detect the leakage current of sample to be measured,
Control unit is used to acquire the output of Young's modulus test cell and leakage current testing unit and is communicated with host computer；
The application method of the monitoring system the following steps are included:
(1) the RS485 interface of initialization control unit；
(2) the MATLAB interactive module of host computer is started；
(3) standard sample measurement pattern is entered,
If into standard sample detection process is called；
If do not entered, cable detection process to be measured is called；
Standard sample detection process the following steps are included:
(1) start information set interface, standard sample information is set；
(2) wait in cable fixed cell and be put into standard sample；
(3) whether detection measuring condition is ready；
(4) starting measurement control program；
(5) measurement control parameter and order are sent to control unit；
(6) control unit return measurement value is received；
If received, measured value is stored, into next step；
If do not received, step is returned to (5)；
(7) standard sample is measured；
If completed, enter test pattern；
If do not completed, return step is (1)；
Cable detection process to be measured the following steps are included:
(1) start cable set interface to be measured to be configured；
(2) detect cable to be measured whether install it is ready；
(3) cable predicted state to be measured is detected；
(4) starting measurement control program；
(5) control unit return measurement value is received；
If received, enter next step；
If do not received, step is returned to (3)；
(6) insulation situation is analyzed according to measured value；
(7) test pattern is entered.
The advantages of the present invention are:
In the present invention, by Young's modulus test cell detection cable insulating materials because of the change of Young's modulus caused by aging
Change, and host computer is transferred to by control unit, by leakage current testing unit detection cable insulating materials because of crackle, dielectric
The variation of leakage current caused by the reasons such as performance change, and host computer is transferred to by control unit.By each unit and upper
MATLAB system be combined with each other in the machine of position, detects the aging conditions of cable insulation material, by compared with normal data,
The ageing state of cable to be measured can be analyzed, entire testing result is accurate, high degree of automation, and convenient for operation and
Storage, analysis and the output of data.
Detailed description of the invention
Fig. 1 is detection principle diagram of the invention；
Fig. 2 is the application method flow chart of Fig. 1.
Specific embodiment
The present invention is described in further detail by following embodiment, but the technology contents that are described of the present embodiment be it is illustrative,
Without being restrictive, protection scope of the present invention should not be limited to according to this.
A kind of cable insulation automatic monitoring system based on Matlab, as shown in Figure 1, 2, innovation of the invention is:
Including Young's modulus test cell, leakage current testing unit, cable fixed cell, control unit and host computer 1, Young's modulus
The test lead of test cell and leakage current testing unit is all connected with the cable fixed cell, Young's modulus test cell and lets out
The output end of leakage current test cell is all connected with one end of control unit, and the other end of control unit connects the host computer；
Cable fixed cell is used to detect to be measured for fixing sample to be measured and connection power supply, Young's modulus test cell
The degree of aging of the insulating materials of sample is measured, leakage current testing unit is used to detect the leakage current of sample to be measured, control
Unit is used to acquire the output of Young's modulus test cell and leakage current testing unit and is communicated with host computer.
Matlab is by numerical analysis, matrix calculating, science data visualization and the modeling of nonlinear dynamic system and imitates
Many powers such as very are integrated in a wieldy windowing environment, are scientific research, engineering design and must be into
Numerous scientific domains that row Effective Numerical calculates provide a kind of comprehensive solution, and largely get rid of tradition
The edit pattern of noninteractive program design language represents the advanced level of current international scientific software for calculation.It utilizes
Matlab can timely be handled collected metrical information and be drawn relevant curve as software tool, be passed through
Analysis to curve accurately can intuitively reflect the insulation situation of cable very much, and this process can be automatically performed, and be realized
Automation.
Commercially available Young's modulus tester can be used in Young's modulus test cell, and leakage current testing unit can be used
Commercially available leakage current tester.Traditional cable cleat can be used in cable fixed cell.Control unit is with microprocessor
Core simultaneously cooperates peripheral circuit, wherein having RS485 communication function, microprocessor and feeder ear is may be implemented in RS485 communication
Vacuum switch controller, the components such as current measurement communication.Host computer can be server, and desktop computer, pen also can be used
Remember this, built-in MATLAB system.
The application method of above-mentioned monitoring system the following steps are included:
(1) the RS485 interface of initialization control unit；
(2) the MATLAB interactive module of host computer is started；
(3) standard sample measurement pattern is entered,
If into standard sample detection process is called；
If do not entered, cable detection process to be measured is called；
Standard sample detection process the following steps are included:
(1) start information set interface, standard sample information is set；
(2) wait in cable fixed cell and be put into standard sample；
(3) whether detection measuring condition is ready；
(4) starting measurement control program；
(5) measurement control parameter and order are sent to control unit；
(6) control unit return measurement value is received；
If received, measured value is stored, into next step；
If do not received, step is returned to (5)；
(7) standard sample is measured；
If completed, enter test pattern；
If do not completed, return step is (1)；
Cable detection process to be measured the following steps are included:
(1) start cable set interface to be measured to be configured；
(2) detect cable to be measured whether install it is ready；
(3) cable predicted state to be measured is detected；
(4) starting measurement control program；
(5) control unit return measurement value is received；
If received, enter next step；
If do not received, step is returned to (3)；
(6) insulation situation is analyzed according to measured value；
(7) test pattern is entered.
In the present invention, by Young's modulus test cell detection cable insulating materials because of the change of Young's modulus caused by aging
Change, and host computer is transferred to by control unit, by leakage current testing unit detection cable insulating materials because of crackle, dielectric
The variation of leakage current caused by the reasons such as performance change, and host computer is transferred to by control unit.By each unit and upper
MATLAB system be combined with each other in the machine of position, detects the aging conditions of cable insulation material, by compared with normal data,
The ageing state of cable to be measured can be analyzed, entire testing result is accurate, high degree of automation, and convenient for operation and
Storage, analysis and the output of data.
Claims (1)
1. a kind of cable insulation automatic monitoring system based on Matlab, it is characterised in that: including Young's modulus test cell,
Leakage current testing unit, cable fixed cell, control unit and host computer, Young's modulus test cell and leakage current testing
The test lead of unit is all connected with the cable fixed cell, the output end of Young's modulus test cell and leakage current testing unit
It is all connected with one end of control unit, the other end of control unit connects the host computer；
The cable fixed cell is used to detect to be measured for fixing sample to be measured and connection power supply, Young's modulus test cell
The degree of aging of the insulating materials of sample is measured, leakage current testing unit is used to detect the leakage current of sample to be measured, control
Unit is used to acquire the output of Young's modulus test cell and leakage current testing unit and is communicated with host computer；
The application method of the monitoring system the following steps are included:
(1) the RS485 interface of initialization control unit；
(2) the MATLAB interactive module of host computer is started；
(3) standard sample measurement pattern is entered,
If into standard sample detection process is called；
If do not entered, cable detection process to be measured is called；
Standard sample detection process the following steps are included:
(1) start information set interface, standard sample information is set；
(2) wait in cable fixed cell and be put into standard sample；
(3) whether detection measuring condition is ready；
(4) starting measurement control program；
(5) measurement control parameter and order are sent to control unit；
(6) control unit return measurement value is received；
If received, measured value is stored, into next step；
If do not received, step is returned to (5)；
(7) standard sample is measured；
If completed, enter test pattern；
If do not completed, return step is (1)；
Cable detection process to be measured the following steps are included:
(1) start cable set interface to be measured to be configured；
(2) detect cable to be measured whether install it is ready；
(3) cable predicted state to be measured is detected；
(4) starting measurement control program；
(5) control unit return measurement value is received；
If received, enter next step；
If do not received, step is returned to (3)；
(6) insulation situation is analyzed according to measured value；
(7) test pattern is entered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811442814.5A CN109683067A (en) | 2018-11-29 | 2018-11-29 | A kind of cable insulation automatic monitoring system and application method based on Matlab |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811442814.5A CN109683067A (en) | 2018-11-29 | 2018-11-29 | A kind of cable insulation automatic monitoring system and application method based on Matlab |
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| CN109683067A true CN109683067A (en) | 2019-04-26 |
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| CN201811442814.5A Pending CN109683067A (en) | 2018-11-29 | 2018-11-29 | A kind of cable insulation automatic monitoring system and application method based on Matlab |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114184907A (en) * | 2021-11-08 | 2022-03-15 | 西南交通大学 | Rail transit cable aging degree evaluation method |
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| CN202126470U (en) * | 2011-04-24 | 2012-01-25 | 许征鹏 | Power cable insulation online monitoring device |
| CN102495342A (en) * | 2011-12-14 | 2012-06-13 | 天津大学 | Device for detecting hydrophobicity of composite insulator of power transmission line and control method for device |
| CN106033073A (en) * | 2016-06-30 | 2016-10-19 | 西安交通大学 | Cable detection and evaluation method based on ultrasonic reflection |
| CN207516493U (en) * | 2017-11-20 | 2018-06-19 | 云南电网有限责任公司玉溪供电局 | A kind of cable insulation defect detecting system |
| CN207586359U (en) * | 2017-11-20 | 2018-07-06 | 云南电网有限责任公司玉溪供电局 | A kind of cable insulation defect detecting device |
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2018
- 2018-11-29 CN CN201811442814.5A patent/CN109683067A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202126470U (en) * | 2011-04-24 | 2012-01-25 | 许征鹏 | Power cable insulation online monitoring device |
| CN102495342A (en) * | 2011-12-14 | 2012-06-13 | 天津大学 | Device for detecting hydrophobicity of composite insulator of power transmission line and control method for device |
| CN106033073A (en) * | 2016-06-30 | 2016-10-19 | 西安交通大学 | Cable detection and evaluation method based on ultrasonic reflection |
| CN207516493U (en) * | 2017-11-20 | 2018-06-19 | 云南电网有限责任公司玉溪供电局 | A kind of cable insulation defect detecting system |
| CN207586359U (en) * | 2017-11-20 | 2018-07-06 | 云南电网有限责任公司玉溪供电局 | A kind of cable insulation defect detecting device |
Non-Patent Citations (1)
| Title |
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| 霍瑞美: "交联聚乙烯热老化监测及快速热寿命评估", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114184907A (en) * | 2021-11-08 | 2022-03-15 | 西南交通大学 | Rail transit cable aging degree evaluation method |
| CN114184907B (en) * | 2021-11-08 | 2022-08-05 | 西南交通大学 | Rail transit cable aging degree evaluation method |
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Application publication date: 20190426 |
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