CN106324434B - A kind of electrical cable intelligent fortune detecting method - Google Patents
A kind of electrical cable intelligent fortune detecting method Download PDFInfo
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- CN106324434B CN106324434B CN201610780710.XA CN201610780710A CN106324434B CN 106324434 B CN106324434 B CN 106324434B CN 201610780710 A CN201610780710 A CN 201610780710A CN 106324434 B CN106324434 B CN 106324434B
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- radiation
- measurement transducer
- rod
- cable
- radiation measurement
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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
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/086—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution networks, i.e. with interconnected conductors
-
- 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
- G01R31/088—Aspects of digital computing
Abstract
A kind of electrical cable intelligent fortune detecting method, it is realized using cable fortune checking device, wherein cable fortune checking device includes the body of rod, rod set, strain relief clamp, processing control apparatus, first radiation measurement transducer, second radiation measurement transducer, third radiation measurement transducer, 4th radiation measurement transducer and radiation source, including the fixed interference radiation signal of transmitting, multiple spot is symmetrical and asymmetric radiation measures, radiation sensitive difference calculates, cable fortune inspection breakdown judge, draw time between overhauls(TBO) inner curve, completion fortune inspection and etc., it can quickly and effectively cable fortune examine, intellectualized detection, real-time measurement overhauls cable run quality.
Description
Technical field
The present invention relates to electrical equipment technical fields, and in particular to a kind of electrical cable intelligent fortune detecting method.
Background technique
The progress of science and technology and economic rapid development, society rapidly increases power demand, however as power distribution network
The continuous development of cable process, distribution network line structure become increasingly complex, and branched line is various, for power distribution network power supply performance
Reliable and stable requirement it is higher and higher, while requirement of the user for power quality and service is also being continuously improved.
Currently, mostly using the mode manually checked for the maintenance mode of distribution line, needs to configure a large amount of route and patrol
Depending on and investigation officer, and at present cable laying position multiplicity, directly it is carried out fortune inspection difficulty it is big, therefore cable fortune inspection
In the process, not only the fortune inspection time is long, low efficiency, and at high cost, increases the maintenance and fortune inspection cost of power supply company.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide one kind can quickly and effectively transport inspection, and intelligent
Change degree is high, and the electrical cable intelligent that real-time measurement overhauls cable run quality transports detecting method.
The present invention provides a kind of electrical cable intelligents to transport detecting method, is realized using cable fortune checking device, wherein cable fortune inspection dress
It sets including the body of rod, rod set, strain relief clamp, processing control apparatus, the first radiation measurement transducer, the second radiation measurement transducer, the
Three radiation measurement transducers, the 4th radiation measurement transducer and radiation source, the length of rod set are less than the body of rod and can shapes to be inserted in
Formula is fixed on the middle part of the body of rod, processing control apparatus be set to outside rod set and respectively with the first radiation measurement transducer, second
Radiation measurement transducer, third radiation measurement transducer, the 4th radiation measurement transducer are connected with radiation source；
On the body of rod respectively at the position that body of rod center position length is a, the first radiation survey is symmetrically respectively set
Quantity sensor and the second radiation measurement transducer, on the body of rod and on deep direction, distance first is radiated respectively
Measurement sensor and the second radiation measurement transducer length are that third radiation measurement transducer and the 4th is arranged at the position of b and c
Radiation measurement transducer, and strain relief clamp is provided at each radiation measurement transducer, wherein c > b > 1.2a；Radiation source is set
It is placed in body of rod center,
It in turn includes the following steps:
(1) strain relief clamp is corresponded to and is caught in target cable, processing control apparatus controls the fixed interference of interference source transmitting and radiates letter
Number；
(2) corresponding radiation value is measured by the first, second, third and fourth radiation measurement transducer, and is transmitted to processing control dress
It sets, wherein the first and second radiation measurement transducer is primary every 15s measurement, this 4 times measured value is asked flat by every measure 4 times respectively
The first and second radiation sensitive value F1 and F2 is respectively obtained after mean value；Third and fourth radiation measurement transducer is primary every 30s measurement, point
Not every measurement respectively obtains third and fourth radiation sensitive value F3 and F4 after 2 times this 2 times measured value being averaged；
(3) the difference m of radiation sensitive value F1 and F2 is calculated by processing control apparatus1If difference m1Greater than default threshold
Value, then it is assumed that there are failure, return steps (1) otherwise to enter step (4) for line cord；
(4) the difference m for comparing radiation sensitive value F3 and F4 is calculated by processing control apparatus2If difference m2>(c-b)·
λ, then it is assumed that there are failure, return steps (1) otherwise to enter step (5) for line cord, and wherein λ is that unit radiates increment；
(5) the difference m of radiation sensitive value F3 and F1 is calculated by processing control apparatus3And radiation sensitive value F4 and F2
Difference m4If metAndWhen, then it is assumed that there are failures for line cord, return
It returns step (1), otherwise enters step (6)；
(6) step (1)-(5) are repeated, until event is all not present in preset power distribution line maintenance intraperiod line road cable
Barrier, by radiation sensitive value F1, F2, F3, F4 and difference m in step (2)-(5)1, m2, m3, m4It is stored respectively, and point
Supplementary biography transports to remote monitoring center, and remote control center draws radiation sensitive value F1, F2, F3, F4 and difference m1, m2 respectively,
M3, m4 with time change curve graph and shown.
Preferably, the body of rod is scalable, can be accommodated in rod set after shortening.
Preferably, a=6cm, b=7.5cm, c=8cm.
Preferably, step (8) further includes appraisal procedure: transporting inspection quality to line cord by curve graph and assesses.
Preferably, the preset line cord fortune overhaul period is 5 minutes.
Electrical cable intelligent of the invention transports detecting method, may be implemented:
1) a kind of new fortune inspection Quality estimation mode is provided, traditional voltage difference measurement method is different from, so that judgement
Accuracy rate it is higher so that line cord fortune inspection it is relatively reliable.
2) it can be realized distribution line Quick overhaul, real-time measurement overhauls cable run quality；
3) cable fortune checking device is convenient for carrying, and mobility is strong, is improved fortune inspection efficiency, has been saved cost.
Detailed description of the invention
Fig. 1 is that cable transports checking device structural schematic diagram
Fig. 2 is that electrical cable intelligent transports detecting method flow diagram
Specific embodiment
The following detailed description of specific implementation of the invention, it is necessary to it is indicated herein to be, implement to be only intended to this hair below
Bright further explanation, should not be understood as limiting the scope of the invention, and field person skilled in the art is according to above-mentioned
Some nonessential modifications and adaptations that summary of the invention makes the present invention, still fall within protection scope of the present invention.
The present invention provides a kind of electrical cable intelligents to transport detecting method, transports checking device using cable to realize, as shown in Figure 1, electric
Cable fortune checking device includes the body of rod 1, rod set 2, strain relief clamp 3, processing control apparatus 4, the first radiation measurement transducer 5, the second radiation
Measurement sensor 6, third radiation measurement transducer 7, the 4th radiation measurement transducer 8 and radiation source, wherein the length of rod set 2 is small
In the body of rod, it can be fixed on the middle part of the body of rod 1 in the form being inserted in, and the body of rod 1 is scalable, and can be accommodated in after shortening
In rod set；Processing control apparatus 4 is set to outside rod set 2, respectively with the first radiation measurement transducer 5, the second actinometry pass
Sensor 6, third radiation measurement transducer 7, the 4th radiation measurement transducer 8 are connected with radiation source.
Line cord is if performance is normal, other interference radiation of outside received at close positions, and before energization
Or the radiation that the conductor thread core after being powered generates all should be identical, then can be on the body of rod 1 respectively apart from 1 center of the body of rod
Length is the first radiation measurement transducer 5 and the second radiation measurement transducer 6 to be symmetrically respectively set, in the body of rod at the position of a
On 1 and on deep direction, distance the first radiation measurement transducer 5 and the second radiation measurement transducer 6 are long respectively
Degree is third radiation measurement transducer 7 and the 4th radiation measurement transducer 8 to be arranged, wherein c > b > 1.2a at the position of b and c,
Radiation source is arranged in 1 center of the body of rod, and strain relief clamp 3 is provided at each radiation measurement transducer, when needing to detect
When, it is only necessary to strain relief clamp is directly clamped among on fortune inspection cable, so that it may so that the first, second, third and fourth radiation measurement transducer
In corresponding position, fixed realize is measured, in a preferred example, a 6cm, b=7.5cm, c=8cm.
As shown in Fig. 2, strain relief clamp is corresponded to and is caught in target cable, processing control apparatus 4 controls interference source when cable fortune inspection
The fixed interference of transmitting, if cable is normal, central point correspond to the radiation at the position of two sides should be it is identical, if there is
Problem, then because of the radiation superposition that radiation and interference source that cable itself generates generate, so that central point corresponds to the position of two sides
The radiation at place is different, then symmetrically setting can be used to by the first radiation measurement transducer 5 and the second radiation measurement transducer 6
It is compared to each other and whether is unanimously examined reliably to determine that cable is transported, if it is in addition only symmetrically to overhaul, then it may be due to interference source
Generate radiation, the spoke received for symmetrically arranged first radiation measurement transducer 5 and the second radiation measurement transducer 6
It is identical for penetrating, therefore asymmetrical setting third radiation measurement transducer 7 and the 4th radiation measurement transducer 8 is also needed to distinguish
It is compared in conjunction with the value of the first radiation measurement transducer 5 and the second radiation measurement transducer 6, to confirm whether cable is normal,
Corresponding radiation value is measured particularly by the first, second, third and fourth radiation measurement transducer, and transmits it to processing control
Device 4, wherein the first and second radiation measurement transducer is primary every 15s measurement, every measure 4 times seeks this 4 times measured value respectively
The first and second radiation sensitive value F1 and F2 is respectively obtained after average value；Third and fourth radiation measurement transducer is primary every 30s measurement,
Every measurement respectively obtains third and fourth radiation sensitive value F3 and F4 after 2 times this 2 times measured value being averaged respectively.
Difference and error ratio are calculated separately by following several ways to judge that cable whether there is failure in distribution line:
A. the difference m of radiation sensitive value F1 and F2 is calculated by processing control apparatus1If difference m1Greater than preset threshold,
Then think that there are failures for line cord；
B. the difference m for comparing radiation sensitive value F3 and F4 is calculated by processing control apparatus2If difference m2>(c-b)·
λ, then it is assumed that there are failures for line cord, and wherein λ is that unit radiates increment；
C. the difference m of radiation sensitive value F3 and F1 is calculated by processing control apparatus3And radiation sensitive value F4 and F2
Difference m4If metAndWhen, then it is assumed that there are failures for line cord；
It, will by processing control apparatus when all failure is not present in distribution line within the preset line cord fortune overhaul period
Radiation sensitive value F1, F2, F3, F4 and difference m1, m2, m3, m4It is stored, and is transmitted separately in remotely monitoring respectively
The heart, remote control center draw radiation sensitive value F1, F2, F3, F4 and difference m respectively1, m2, m3, m4With time change
Curve graph is simultaneously shown, this intuitively can be transported the situation in the overhaul period and shown, commented convenient for the quality for maintenance
Valence, and data can be provided for subsequent research.
Although for illustrative purposes, it has been described that exemplary embodiments of the present invention, those skilled in the art
Member it will be understood that, can be in form and details in the case where the scope and spirit for not departing from invention disclosed in appended claims
On the change that carry out various modifications, add and replace etc., and all these changes all should belong to appended claims of the present invention
Protection scope, and each step in the claimed each department of product and method, can in any combination
Form is combined.Therefore, to disclosed in this invention the description of embodiment be not intended to limit the scope of the invention,
But for describing the present invention.Correspondingly, the scope of the present invention is not limited by embodiment of above, but by claim or
Its equivalent is defined.
Claims (5)
1. a kind of electrical cable intelligent transports detecting method, realize that wherein cable fortune checking device includes the body of rod, bar using cable fortune checking device
Set, strain relief clamp, processing control apparatus, the first radiation measurement transducer, the second radiation measurement transducer, third actinometry sensing
Device, the 4th radiation measurement transducer and radiation source, the length of rod set are less than the body of rod and can be fixed on the body of rod in the form being inserted in
Middle part, processing control apparatus be set to outside rod set and respectively with the first radiation measurement transducer, the second radiation measurement transducer,
Third radiation measurement transducer, the 4th radiation measurement transducer are connected with radiation source；
On the body of rod respectively at the position that body of rod center position length is a, the first actinometry biography is symmetrically respectively set
Sensor and the second radiation measurement transducer, on the body of rod and on deep direction, the first actinometry of distance respectively
Sensor and the second radiation measurement transducer length are that third radiation measurement transducer and the 4th radiation is arranged at the position of b and c
Measurement sensor, and strain relief clamp is provided at each radiation measurement transducer, wherein c > b > 1.2a；Radiation source is set to
Body of rod center,
It is characterized in that, in turn including the following steps:
(1) strain relief clamp is corresponded to and is caught in target cable, processing control apparatus controls the fixed interference radiation signal of interference source transmitting；
(2) corresponding radiation value is measured by the first, second, third and fourth radiation measurement transducer, and is transmitted to processing control apparatus,
Wherein the first and second radiation measurement transducer is primary every 15s measurement, and every measure 4 times averages this 4 times measured value respectively
After respectively obtain the first and second radiation sensitive value F1 and F2；Third and fourth radiation measurement transducer is primary every 30s measurement, respectively often
It measures 2 times and respectively obtains third and fourth radiation sensitive value F3 and F4 after this 2 times measured value is averaged；
(3) the difference m of radiation sensitive value F1 and F2 is calculated by processing control apparatus1If difference m1Greater than preset threshold, then
Line cord is thought there are failure, and return step (1) otherwise enters step (4)；
(4) the difference m for comparing radiation sensitive value F3 and F4 is calculated by processing control apparatus2If difference m2> (c-b) λ, then
Line cord is thought there are failure, and return step (1) otherwise enters step (5), and wherein λ is that unit radiates increment；
(5) the difference m of radiation sensitive value F3 and F1 is calculated by processing control apparatus3And the difference of radiation sensitive value F4 and F2
m4If metAndWhen, then it is assumed that there are failure, return steps for line cord
(1), (6) are otherwise entered step；
(6) step (1)-(5) are repeated, it, will until failure is all not present in preset power distribution line maintenance intraperiod line road cable
Radiation sensitive value F1, F2, F3, F4 and difference m in step (2)-(5)1, m2, m3, m4It is stored, and is passed respectively respectively
Remote monitoring center is transported to, remote control center draws radiation sensitive value F1, F2, F3, F4 and difference m1, m2, m3 respectively,
M4 with time change curve graph and shown.
2. the method as described in claim 1, it is characterised in that: the body of rod is scalable, can be accommodated in rod set after shortening.
3. the method as described in claim 1, it is characterised in that: a=6cm, b=7.5cm, c=8cm.
4. the method as described in claim 1, it is characterised in that: step (8) further includes appraisal procedure: by curve graph to route
Cable fortune inspection quality is assessed.
5. method as claimed in claim 4, it is characterised in that: the preset line cord time between overhauls(TBO) is 5 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610780710.XA CN106324434B (en) | 2016-08-31 | 2016-08-31 | A kind of electrical cable intelligent fortune detecting method |
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| CN201610780710.XA CN106324434B (en) | 2016-08-31 | 2016-08-31 | A kind of electrical cable intelligent fortune detecting method |
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| CN106324434A CN106324434A (en) | 2017-01-11 |
| CN106324434B true CN106324434B (en) | 2019-01-29 |
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| CN112136055A (en) * | 2018-03-19 | 2020-12-25 | 莱尼电缆有限公司 | Measuring device and method for monitoring a cable |
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| GB987470A (en) * | 1962-06-13 | 1965-03-31 | Secr Aviation | Improvements in or relating to aircraft approach and landing systems |
| CN201935980U (en) * | 2011-01-07 | 2011-08-17 | 杭州市电力局 | Power distribution network failure detector |
| CN102646967B (en) * | 2012-05-04 | 2014-12-17 | 清华大学 | Unsymmetrical fault relay protection method of distributing line |
| CN103311908B (en) * | 2013-05-19 | 2016-03-30 | 国家电网公司 | Single end current is utilized to realize transmission line single-phase high-impedance relay protecting method |
| CN203674702U (en) * | 2013-09-25 | 2014-06-25 | 国家电网公司 | Electric power distribution line short circuit fault isolation system |
| CN105093065A (en) * | 2015-08-11 | 2015-11-25 | 国网山东乳山市供电公司 | Distribution line centralized control system and line fault detection and processing method |
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