CN108919058A - Cable radial direction damage fault analogy method under a kind of temperature gradient - Google Patents
Cable radial direction damage fault analogy method under a kind of temperature gradient Download PDFInfo
- Publication number
- CN108919058A CN108919058A CN201810958191.0A CN201810958191A CN108919058A CN 108919058 A CN108919058 A CN 108919058A CN 201810958191 A CN201810958191 A CN 201810958191A CN 108919058 A CN108919058 A CN 108919058A
- Authority
- CN
- China
- Prior art keywords
- cable
- point
- test
- temperature gradient
- frequency
- 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.)
- Granted
Links
Classifications
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The invention discloses cable radial direction damage fault analogy method under a kind of temperature gradient, left and right transverse direction dragging track in the shielding shell of simulator；First support component includes the left and right support column being erected on left and right lateral dragging track, and left and right support column is separately connected longitudinal left and right both ends for sliding bar；Longitudinal direction is slided on bar, and longitudinally movable height adjuster is set with, and U-shaped folder tool is provided at the top of height adjuster；U-shaped folder tool includes U-shaped folder head, is additionally provided with cooling component on U-shaped folder head.Assessment method include draw standard frequency spectrum curve and test spectrum curve, the curve integral difference for being fitted using piecewise linear interpolation method, calculating each section, calculate cable temperature gradient loss factor and temperature gradient fault distinguishing coefficient after determine.Simulator can be realized cable different fault simulations radially damaged under temperature gradient, and assessment method carries out accurately degree of injury to cable radial direction damage fault and judges.
Description
Technical field
The invention belongs to high-speed rail train cable terminal fault fields, and in particular to cable radially damages under a kind of temperature gradient
Failure simulation method.
Background technique
Recent years, with the rapid development of China express railway, the electrization rate of railway is continuously improved, EP rubbers
The features such as cable is due to its higher good dielectric properties and toughness, carry the important task of conveying electric energy in railway, and usage amount is anxious
The case where sharp increase adds, cable, is directly related to the operational safety of entire train.Due to railway road complexity and train from
The problem of body structure, cable usually will appear different degrees of bending, and cable is made radial damage occur, cause to go out inside insulating layer
The phenomenon that existing temperature anomaly rising point is concentrated, and when train is run in severe cold area or rain and snow weather, cable insulation
Layer is external to be in low-temperature condition, and resulting temperature gradient can impact cable insulation, therefore to electric under temperature bench
Simulation of the cable diameter to damage fault, and it is just very significant to carry out damage check to cable.
Carrying out simulation using radial damage fault of the cable radial direction damage fault analog platform to cable is effective failure
Detect the effective ways of research.But the current research simulated for cable radial direction damage fault under temperature gradient is not yet, and
And to the detection of cable radial direction damage fault mainly based on Partial Discharge Detection, Partial Discharge Detection is a kind of destructive inspection
Survey, therefore, now need it is a kind of can conveniently, cable radial direction damage fault analog platform and side under lossless detection temperature gradient
Method.
Summary of the invention
The object of the present invention is to provide cable radial direction damage fault analogy methods under a kind of temperature gradient.
Realize that the technical solution of the object of the invention is as follows：
Cable radial direction damage fault analogy method under a kind of temperature gradient, including simulation below and testing procedure：
Step 1：Assemble cable radial direction lesion mimic device under temperature gradient；
1.1 failure simulation devices include shielding shell (1), and the bottom in shielding shell (1) is provided with left transverse direction and slides
Track (21) and right lateral dragging track (31)；It further include the first support component (20), the second support component (22), third support
Component (23)；
1.2 failure simulation devices further include the first support component (20)；First support component (20) includes being erected at a left side
Left support column on lateral dragging track (21) and the right support column being erected on right lateral dragging track (31), left and right support
Column is separately connected longitudinal left and right both ends for sliding bar (30)；Longitudinal direction is slided on bar (30), and being set with one or two can longitudinally move
Dynamic height adjuster (10) is provided with U-shaped folder tool (13) at the top of height adjuster (10)；U-shaped folder tool (13) includes being used for
The vertical or horizontal U-shaped folder head of cable is clamped, is additionally provided with cooling component (11) on U-shaped folder head；Second support component
(22) and third support component (23) is identical as the first support component (20) structure.
1.3 failure simulation devices further include DC current source (14) and console (15), and the console (15) is used for
Control the DC current source (14) and cooling component (11)；
Step 2：Cable radially damages degradation treatment under the temperature gradient of failure simulation device；
2.1 prepare completely new cable, keep cable core and 30 DEG C~40 DEG C of the oversheath temperature difference, deterioration in the time 5~10 hours
Processing, obtains the not aged state of cable；
2.2 prepare completely new cable, keep cable core and 70 DEG C~80 DEG C of the oversheath temperature difference, deterioration in the time 15~20 hours
Processing, obtains the state of the slight aging of cable；
2.3 prepare completely new cable, keep cable core and 90 DEG C~110 DEG C of the oversheath temperature difference, the time 25~30 hours bad
Change processing, obtains the state of cable mittlere alterung；
2.4 prepare completely new cable, keep cable core and 110 DEG C~130 DEG C of the oversheath temperature difference, the time 90~100 hours
Degradation treatment obtains the state of cable severe aging；
Step 3：The test that cable radially damages under temperature gradient；
For the different degrees of cable radially damaged handled in step 2, which is tested, including
Following steps：
3.1 take not completely deteriorated cable for reference, using cable dielectric loss detector, carry out the multiple dielectric of different frequency point
Constant test, frequency range are 10mHz~1000Hz, choose different frequency and test n point altogether, and n takes 101, i-th test point
Frequency is denoted as fi, the complex dielectric permittivity real part of the point is denoted as ε0,i' (ω), imaginary part is denoted as ε0,i" (ω), i ∈ [1, n] takes tested
The frequency response curve of cable complex dielectric permittivity imaginary part answers dielectric imaginary part as fixed reference feature amount, with all test points of reference cable
Value ε0,1”,ε0,2”,……,ε0,n" be fitting data point Y value；To correspond to the frequency values f of test point1,f2,……,
fnIt for the abscissa numerical value of fitting data, is fitted using piecewise linear interpolation method, it is bent to be depicted as reference fluid loss frequency spectrum
Line ε0″(f)；
3.2 take cable to be tested, and the temperature difference T between detection cable bending place cable core and oversheath utilizes cable dielectric
Spectrum detector carries out the complex dielectric permittivity test of different frequency point, and frequency range is 10mHz~1000Hz, chooses different frequencies
Rate tests n point altogether, and n takes 101, and the frequency of i-th of test point is denoted as fi, the complex dielectric permittivity real part of the point is denoted as εx,i'
(ω), imaginary part is denoted as εx,i" (ω), i ∈ [1, n] takes the frequency response curve of tested cable complex dielectric permittivity imaginary part as reference
Characteristic quantity, with all test point complex dielectric permittivity imaginary values ε of reference cablex,1”,εx,2”,……,εx,n" it is fitting data point
Y value；To correspond to the frequency values f of test point1,f2,……,fnFor the abscissa numerical value of fitting data, segmented line is utilized
Property interpolation method be fitted, be depicted as tested media loss spectrum curve εx″(f)；
3.3 with all test point complex dielectric permittivity response F of reference cable1,F2,……,FnFor the vertical seat of fitting data point
Mark numerical value；To correspond to the frequency values f of test point1,f2,……,fnFor the abscissa numerical value of fitting data, inserted using piecewise linearity
Value method is fitted, and obtains M0(f)；
With all test point complex dielectric permittivity response F of cable under testx1,Fx2,……,FxnFor the vertical seat of fitting data point
Mark numerical value；To correspond to the frequency values f of test point1,f2,……,fnFor the abscissa numerical value of fitting data, inserted using piecewise linearity
Value method is fitted, and obtains Mx(f)；Complex dielectric permittivity response be each frequency test point under complex dielectric permittivity imaginary part ε " (ω) and
The ratio of real part ε ' (ω)；
The band limits of 10mHz~1000Hz is divided into 100 sections in 3.1,3.2 by 3.4, in each section
M0(f) and Mx(f) the curve integral difference Δ M that integral difference calculates each section is carried outi；To the ε in each section0" (f) and εx″(f)
Carry out the curve integral difference Δ ε that integral difference calculates each sectioni″；
In formula, i is integer, 1≤i≤101, fiFor the frequency of i-th of test point in step 3.1 and 3.2；
3.5 calculate cable temperature gradient loss factor λ；
In formula,For be lost each section of spectrum curve curve integral difference average value,For each area of response
The average value of section curve integral difference；
Further, further comprising the steps of：
Step 1：Judge cable temperature gradient loss factor λ size, does not have at cable bent radial if λ≤P (P=2)
Temperature difference damage；If P < λ, continue；
Step 2：Calculate temperature gradient fault distinguishing coefficient Q；
In formula, Δ T is the temperature difference of cable conductor and oversheath in test process；
Step 3：When 1 Q≤1.5 <, then the slight aging of cable of testing and assessing；When 1.5 Q≤2 <, then cable mittlere alterung of testing and assessing；
When 2 < Q, then cable severe aging of testing and assessing.
The beneficial effects of the present invention are：
1, simulator of the invention can easily and effectively realize cable different events radially damaged under temperature gradient
Barrier simulation.
2, assessment method is used by the analysis to cable frequencies response curve, is carried out to cable radial direction damage fault more quasi-
The judgement of true ground degree of injury.
Detailed description of the invention
Fig. 1 is the structure chart of temperature gradient cable radial direction damage fault simulator in the present invention；
Fig. 2 is the top view of temperature gradient cable radial direction damage fault simulator in the present invention；
Fig. 3 is the flow chart of cable radial direction damage fault detection method under temperature gradient in the present invention.
Specific embodiment
Below with reference to embodiment, the present invention is further illustrated.
Case study on implementation is as follows：
Fig. 1 show cable radial direction damage fault simulator under temperature gradient, including shielding shell (1), height adjustment
Device 1 (2), cooling component 1 (3), temperature sensor 1 (4), U-shaped folder have 3 (5), height adjuster 2 (6), cooling component 2 (7), temperature
Spend sensor 2 (8), U-shaped folder has 2 (9), height adjuster 3 (10), cooling component 3 (11), temperature sensor 3 (12), U-shaped folder
Have 1 (13), DC current source (14), console (15), select button (16), display screen (17), start button (18), mode choosing
Select device (19), the first support component (20), left lateral dragging track (21), right lateral dragging track (31), the second support component
(22), third support component (23), data collection line (24), cable under test (25), U-shaped folder have 4 (26), U-shaped folder has 5 (27),
Bar 1 (28) is slided in longitudinal direction, bar 2 (29) is slided in longitudinal direction, bar 3 (30) is slided in longitudinal direction；The height adjuster 1 (2), height adjuster
(6), height adjuster 3 (10) is realized by hydraulic way.
The usage mode of radial lesion mimic device is under cable temperature gradient：It is pressed by each adjusting of console (15)
Button, can control the height of height adjuster 1 (2), height adjuster 2 (6), height adjuster 3 (10), to adjust electricity to be measured
The height at cable (25) each position；First support component (20), the second support component (22), third support component (23) point
Be not connected to it is longitudinal slide bar 1 (28), it is longitudinal slide bar 2 (29), it is longitudinal slide bar 3 (30), U-shaped folder has 1 (5), U-shaped folder tool 2
(9), U-shaped folder, which has 3 (13) and can control it by console (15), is longitudinally sliding bar 1 (28), longitudinal bar 2 (29), longitudinal of sliding
Slide the position slided on bar 3 (19)；First support component (20), the second support component (22), third support component
(23) it is connected to left lateral dragging track (21), can slide on right lateral dragging track (31) and on sliding bar；Control
Platform (15) control DC current source (14) applies 200~400A DC current and heats to the cable core of cable under test (25), leads to
Cross built-in temperature-measuring optical fiber in cable conductor and temperature detection carried out to cable core, and to cooling component 1 (3), cooling component 2 (7),
The cooling effect of cooling component 3 (11) is controlled, the temperature difference situation at dummycable bent radial；It is more tight when needing to simulate
When the cable of weight radially damages, U-shaped folder is selected to have 2 (9), U-shaped folder has 1 (13), U-shaped folder has 4 (26), U-shaped folder has 5 (27) and adjusts
Its whole relative position so that bending place curvature increases, while increasing current source current to about 300~400A and reducing cooling component
Temperature increases cable internal-external temperature difference；When needing dummycable radially to damage lighter situation, U-shaped folder is selected to have 3 (5), U-shaped
Fixture 2 (9), U-shaped folder have 1 (13) and adjust its relative position, so that bending place curvature reduces, the temperature liter of each cooling component
Height, current source current are decreased to 200~300A, reduce cable internal-external temperature difference；Failure simulation device can realize 4 grade failure journeys
Degree, is represented sequentially as：Failure 0 (fault-free), failure 1 (slight aging), failure 2 (mittlere alterung), failure 3 (severe aging).
The invention also provides a kind of assessment methods, can obtain to cable radial direction lesion mimic unit simulation under temperature gradient
To cable test and assess, the following are a specific embodiments, specifically include following steps：
Step 1：It takes not completely deteriorated cable for reference, using cable dielectric loss detector, carries out answering for different frequency point
Dielectric constant test, frequency range are 10mHz~1000Hz, choose different frequency and test n point altogether, n takes 101, i-th of test
The frequency of point is denoted as fi, the complex dielectric permittivity real part of the point is denoted as ε0,i' (ω), imaginary part is denoted as ε0,i" (ω), i ∈ [1, n] takes
The frequency response curve of tested cable complex dielectric permittivity imaginary part answers dielectric as fixed reference feature amount with all test points of reference cable
Imaginary values ε0,1”,ε0,2”,……,ε0,n" be fitting data point Y value；To correspond to the frequency values f of test point1,
f2,……,fnIt for the abscissa numerical value of fitting data, is fitted using piecewise linear interpolation method, is depicted as reference fluid loss
Spectrum curve ε0″(f)；
Step 2：Cable to be tested is taken, the temperature difference T between detection cable bending place cable core and oversheath is situated between using cable
Electric spectrum detector carries out the complex dielectric permittivity test of different frequency point, and frequency range is 10mHz~1000Hz, chooses different
Frequency tests n point altogether, and n takes 101, and the frequency of i-th of test point is denoted as fi, the complex dielectric permittivity real part of the point is denoted as εx,i'
(ω), imaginary part is denoted as εx,i" (ω), i ∈ [1, n] takes the frequency response curve of tested cable complex dielectric permittivity imaginary part as reference
Characteristic quantity, with all test point complex dielectric permittivity imaginary values ε of reference cablex,1”,εx,2”,……,εx,n" it is fitting data point
Y value；To correspond to the frequency values f of test point1,f2,……,fnFor the abscissa numerical value of fitting data, segmented line is utilized
Property interpolation method be fitted, be depicted as tested media loss spectrum curve εx″(f)；
Step 3：With all test point complex dielectric permittivity response F of reference cable1,F2,……,FnFor fitting data point
Y value；To correspond to the frequency values f of test point1,f2,……,fnFor the abscissa numerical value of fitting data, segmented line is utilized
Property interpolation method is fitted, and obtains M0(f)；
With all test point complex dielectric permittivity response F of cable under testx1,Fx2,……,FxnFor the vertical seat of fitting data point
Mark numerical value；To correspond to the frequency values f of test point1,f2,……,fnFor the abscissa numerical value of fitting data, inserted using piecewise linearity
Value method is fitted, and obtains Mx(f)；Complex dielectric permittivity response be each frequency test point under complex dielectric permittivity imaginary part ε " (ω) and
The ratio of real part ε ' (ω)；
Step 4：The band limits of 10mHz~1000Hz is divided into 100 sections, to the M in each section0(f) and Mx
(f) the curve integral difference Δ M that integral difference calculates each section is carried outi；To the ε in each section0" (f) and εx" (f) is integrated
Difference calculates the curve integral difference Δ ε of each sectioni″；
In formula, i is integer, 1≤i≤101, fiFor the frequency of i-th of test point in step 3.1 and 3.2；
Step 5：Calculate cable temperature gradient loss factor λ；
In formula,For be lost each section of spectrum curve curve integral difference average value,For each area of response
The average value of section curve integral difference；
Step 6：Judge cable temperature gradient loss factor λ size, does not have at cable bent radial if λ≤P (P=2)
Temperature difference damage；If P < λ, continue；
Step 7：Calculate temperature gradient fault distinguishing coefficient Q；
In formula, Δ T is the temperature difference of cable conductor and oversheath in test process；
Step 8：When 1 Q≤1.5 <, then the slight aging of cable of testing and assessing；When 1.5 Q≤2 <, then cable mittlere alterung of testing and assessing；
When 2 < Q, then cable severe aging of testing and assessing.
Claims (2)
1. cable radial direction damage fault analogy method under a kind of temperature gradient, which is characterized in that including simulation below and test
Step：
Step 1：Assemble cable radial direction lesion mimic device under temperature gradient；
1.1 failure simulation devices include shielding shell (1), and the bottom in shielding shell (1) is provided with left lateral dragging track
(21) and right lateral dragging track (31)；It further include the first support component (20), the second support component (22), third support component
(23)；
1.2 failure simulation devices further include the first support component (20)；First support component (20) includes being erected at left transverse direction
Left support column on dragging track (21) and the right support column being erected on right lateral dragging track (31), left and right support column point
The left and right both ends of bar (30) longitudinal Lian Jie not be slided；Longitudinal direction is slided on bar (30), and it is longitudinally movable to be set with one or two
Height adjuster (10) is provided with U-shaped folder tool (13) at the top of height adjuster (10)；It includes for clamping that U-shaped folder, which has (13),
The vertical or horizontal U-shaped folder head of cable is additionally provided with cooling component (11) on U-shaped folder head；Second support component (22)
It is identical as the first support component (20) structure with third support component (23)；
1.3 failure simulation devices further include DC current source (14) and console (15), and the console (15) is for controlling
The DC current source (14) and cooling component (11)；
Step 2：Cable radially damages degradation treatment under the temperature gradient of failure simulation device；
2.1 prepare completely new cable, keep cable core and 30 DEG C~40 DEG C of the oversheath temperature difference, the time 5~10 hours degradation treatments,
Obtain the not aged state of cable；
2.2 prepare completely new cable, keep cable core and 70 DEG C~80 DEG C of the oversheath temperature difference, at deterioration in the time 15~20 hours
Reason, obtains the state of the slight aging of cable；
2.3 prepare completely new cable, keep cable core and 90 DEG C~110 DEG C of the oversheath temperature difference, at deterioration in the time 25~30 hours
Reason, obtains the state of cable mittlere alterung；
2.4 prepare completely new cable, keep cable core and 110 DEG C~130 DEG C of the oversheath temperature difference, deterioration in the time 90~100 hours
Processing, obtains the state of cable severe aging；
Step 3：The test that cable radially damages under temperature gradient；
For the different degrees of cable radially damaged handled in step 2, which is tested, including following
Step：
3.1 take not completely deteriorated cable for reference, using cable dielectric loss detector, carry out the complex dielectric permittivity of different frequency point
Test, frequency range are 10mHz~1000Hz, choose different frequency and test n point altogether, n takes 101, the frequency of i-th of test point
It is denoted as fi, the complex dielectric permittivity real part of the point is denoted as ε0,i' (ω), imaginary part is denoted as ε0,i" (ω), i ∈ [1, n] takes tested cable
The frequency response curve of complex dielectric permittivity imaginary part answers dielectric imaginary values as fixed reference feature amount, with all test points of reference cable
ε0,1”,ε0,2”,……,ε0,n" be fitting data point Y value；To correspond to the frequency values f of test point1,f2,……,fn
It for the abscissa numerical value of fitting data, is fitted using piecewise linear interpolation method, is depicted as reference fluid loss spectrum curve
ε0″(f)；
3.2 take cable to be tested, and the temperature difference T between detection cable bending place cable core and oversheath utilizes cable dielectric and magnetic
Detector carries out the complex dielectric permittivity test of different frequency point, and frequency range is 10mHz~1000Hz, and it is total to choose different frequency
N point is tested, n takes 101, and the frequency of i-th of test point is denoted as fi, the complex dielectric permittivity real part of the point is denoted as εx,i' (ω), it is empty
Portion is denoted as εx,i" (ω), i ∈ [1, n] takes the frequency response curve of tested cable complex dielectric permittivity imaginary part as fixed reference feature amount,
With all test point complex dielectric permittivity imaginary values ε of reference cablex,1”,εx,2”,……,εx,n" be fitting data point ordinate number
Value；To correspond to the frequency values f of test point1,f2,……,fnFor the abscissa numerical value of fitting data, piecewise linear interpolation method is utilized
It is fitted, is depicted as tested media loss spectrum curve εx″(f)；
3.3 with all test point complex dielectric permittivity response F of reference cable1,F2,……,FnFor the ordinate number of fitting data point
Value；To correspond to the frequency values f of test point1,f2,……,fnFor the abscissa numerical value of fitting data, piecewise linear interpolation method is utilized
It is fitted, obtains M0(f)；
With all test point complex dielectric permittivity response F of cable under testx1,Fx2,……,FxnFor the ordinate number of fitting data point
Value；To correspond to the frequency values f of test point1,f2,……,fnFor the abscissa numerical value of fitting data, piecewise linear interpolation method is utilized
It is fitted, obtains Mx(f)；Complex dielectric permittivity response is complex dielectric permittivity imaginary part ε " (ω) and real part under each frequency test point
The ratio of ε ' (ω)；
The band limits of 10mHz~1000Hz is divided into 100 sections in 3.1,3.2 by 3.4, to the M in each section0(f)
And Mx(f) the curve integral difference Δ M that integral difference calculates each section is carried outi；To the ε in each section0" (f) and εx" (f) is carried out
Integral difference calculates the curve integral difference Δ ε of each sectioni″；
In formula, i is integer, 1≤i≤101, fiFor the frequency of i-th of test point in step 3.1 and 3.2；
3.5 calculate cable temperature gradient loss factor λ；
In formula,For be lost each section of spectrum curve curve integral difference average value,It is bent for each section of response
The average value of line integral difference；
2. cable radial direction damage fault analogy method under a kind of temperature gradient as described in claim 1, which is characterized in that also wrap
Include following steps：
Step 1：Judge cable temperature gradient loss factor λ size, there is no temperature difference damage at cable bent radial if λ≤2；If
2 < λ continue；
Step 2：Calculate temperature gradient fault distinguishing coefficient Q；
In formula, Δ T is the temperature difference of cable conductor and oversheath in test process；
Step 3：When 1 Q≤1.5 <, then the slight aging of cable of testing and assessing；When 1.5 Q≤2 <, then cable mittlere alterung of testing and assessing；As 2 <
Q, then cable severe aging of testing and assessing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810958191.0A CN108919058B (en) | 2018-08-22 | 2018-08-22 | The simulation of cable radial direction damage fault and test method under a kind of temperature gradient |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810958191.0A CN108919058B (en) | 2018-08-22 | 2018-08-22 | The simulation of cable radial direction damage fault and test method under a kind of temperature gradient |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108919058A true CN108919058A (en) | 2018-11-30 |
| CN108919058B CN108919058B (en) | 2019-08-06 |
Family
ID=64405257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810958191.0A Active CN108919058B (en) | 2018-08-22 | 2018-08-22 | The simulation of cable radial direction damage fault and test method under a kind of temperature gradient |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108919058B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110160482A (en) * | 2019-04-26 | 2019-08-23 | 云南电网有限责任公司电力科学研究院 | The measurement method and device of cable insulation damaged area under a kind of hypobaric |
| CN115856514A (en) * | 2023-02-28 | 2023-03-28 | 宝胜高压电缆有限公司 | Intelligent operation abnormity monitoring and positioning method and system for polypropylene cable |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014010027A (en) * | 2012-06-29 | 2014-01-20 | Waseda Univ | Position orientation method of temperature changed place of insulation electric wire or cable |
| CN103728539A (en) * | 2014-01-23 | 2014-04-16 | 华北电力大学（保定） | Distributive optical fiber temperature measurement based cable electrical failure simulation analysis method |
| CN104765960A (en) * | 2015-04-03 | 2015-07-08 | 国家电网公司 | Method for estimating accumulation amount of electric heat degradation of power cable with consideration of random process |
| CN105353266A (en) * | 2015-09-28 | 2016-02-24 | 国网山东省电力公司济南供电公司 | Underground cable fault monitoring system and underground cable fault monitoring method |
| KR101732500B1 (en) * | 2016-03-31 | 2017-05-04 | 대전대학교 산학협력단 | Method and system for interpretation of protective coordination simulator in High Temperature Superconductor power cable |
| CN106840450A (en) * | 2016-12-29 | 2017-06-13 | 大连银海贡创科技发展有限公司 | A kind of high-precision optical fiber composite cable intelligent monitoring platform |
| CN106855605A (en) * | 2015-12-04 | 2017-06-16 | 核动力运行研究所 | For the frequency domain test analysis system and method for cable entirety aging life-span assessment |
| CN107402338A (en) * | 2016-05-20 | 2017-11-28 | 国网天津市电力公司 | Cable electrical failure analysis methods based on distributed optical fiber temperature measurement |
| CN107422191A (en) * | 2017-05-29 | 2017-12-01 | 西南交通大学 | A kind of operating condition is got off download cable terminal dielectric spectroscopy experimental system and method |
| CN107561419A (en) * | 2017-08-24 | 2018-01-09 | 西南交通大学 | A kind of appraisal procedure of oil-immersed sleeve pipe insulation bubble effect risk |
-
2018
- 2018-08-22 CN CN201810958191.0A patent/CN108919058B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014010027A (en) * | 2012-06-29 | 2014-01-20 | Waseda Univ | Position orientation method of temperature changed place of insulation electric wire or cable |
| CN103728539A (en) * | 2014-01-23 | 2014-04-16 | 华北电力大学（保定） | Distributive optical fiber temperature measurement based cable electrical failure simulation analysis method |
| CN104765960A (en) * | 2015-04-03 | 2015-07-08 | 国家电网公司 | Method for estimating accumulation amount of electric heat degradation of power cable with consideration of random process |
| CN105353266A (en) * | 2015-09-28 | 2016-02-24 | 国网山东省电力公司济南供电公司 | Underground cable fault monitoring system and underground cable fault monitoring method |
| CN106855605A (en) * | 2015-12-04 | 2017-06-16 | 核动力运行研究所 | For the frequency domain test analysis system and method for cable entirety aging life-span assessment |
| KR101732500B1 (en) * | 2016-03-31 | 2017-05-04 | 대전대학교 산학협력단 | Method and system for interpretation of protective coordination simulator in High Temperature Superconductor power cable |
| CN107402338A (en) * | 2016-05-20 | 2017-11-28 | 国网天津市电力公司 | Cable electrical failure analysis methods based on distributed optical fiber temperature measurement |
| CN106840450A (en) * | 2016-12-29 | 2017-06-13 | 大连银海贡创科技发展有限公司 | A kind of high-precision optical fiber composite cable intelligent monitoring platform |
| CN107422191A (en) * | 2017-05-29 | 2017-12-01 | 西南交通大学 | A kind of operating condition is got off download cable terminal dielectric spectroscopy experimental system and method |
| CN107561419A (en) * | 2017-08-24 | 2018-01-09 | 西南交通大学 | A kind of appraisal procedure of oil-immersed sleeve pipe insulation bubble effect risk |
Non-Patent Citations (1)
| Title |
|---|
| 黄金华 等: "对10kv电缆接续中损伤原因的分析和优化", 《江西电力职业技术学院院报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110160482A (en) * | 2019-04-26 | 2019-08-23 | 云南电网有限责任公司电力科学研究院 | The measurement method and device of cable insulation damaged area under a kind of hypobaric |
| CN115856514A (en) * | 2023-02-28 | 2023-03-28 | 宝胜高压电缆有限公司 | Intelligent operation abnormity monitoring and positioning method and system for polypropylene cable |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108919058B (en) | 2019-08-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104133155B (en) | A kind of cable local defect diagnostic method | |
| CN104714155B (en) | A kind of detection to direct current XLPE cable shelf depreciation and apparatus for evaluating and method | |
| CN110794271A (en) | Power cable intermediate joint damp positioning diagnosis method based on input impedance spectrum | |
| Friel et al. | Frequency analysis of time-domain reflectometry (TDR) with application to dielectric spectroscopy of soil constituents | |
| CN108919058B (en) | The simulation of cable radial direction damage fault and test method under a kind of temperature gradient | |
| KR101031595B1 (en) | Power transmission character evaluation system using small scale and mathod for thereof | |
| CN110009236A (en) | A kind of oil-immersed power transformer built-in electrical insulation degree of aging quantitative evaluating method | |
| CN107656181B (en) | A kind of method of quantitative Diagnosis paper oil insulation degree of aging | |
| CN103941120B (en) | A kind of Hydrophobicity of Composite Insulator detection and Aging Assessment device | |
| CN103472363A (en) | Crosslinked polyethylene cable residual life assessment method | |
| CN108872797B (en) | A kind of radial local lesion mimic and test method of making moist of cable | |
| CN108872820A (en) | The appraisal procedure and system of oil-impregnated paper insulation ageing state in high-tension current inductor | |
| CN109633385B (en) | Method for distinguishing noise from discharge in HFCT cable on-line monitoring | |
| CN105403848A (en) | Verification device for novel capacitive equipment on-line monitoring system | |
| CN105259527A (en) | Test method for calibrating detection results of different ultraviolet imaging instruments | |
| RU2720638C1 (en) | Device for monitoring and diagnostics of high-voltage linear polymer insulators | |
| CN108918986A (en) | A kind of lv power cable electromagnetic shielding performance test method and system | |
| Golenishchev-Kutuzov et al. | Integrated noncontact diagnostics of the operable condition of high-voltage insulators | |
| CN108828410A (en) | A kind of detection method that the cable based on VLF voltage spectroscopy radially damages | |
| Bongiorno et al. | Experimental validation of the electric network model of the Italian 2x25 kV 50 Hz railway | |
| CN105866564A (en) | Cable core temperature inversion formula examination method and apparatus thereof | |
| CN114577853B (en) | Automatic judging method for heating defect of composite insulator | |
| CN112595913B (en) | Cable local aging detection method and detection device | |
| CN108872648B (en) | Radial lesion mimic and test method under the influence of a kind of cable abnormal hot spots | |
| CN113447992B (en) | Method and system for mineral exploration by using time domain induced polarization method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |