CN105911386B - A kind of test method for verifying transition Joint Reliability - Google Patents
A kind of test method for verifying transition Joint Reliability Download PDFInfo
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- CN105911386B CN105911386B CN201610248719.6A CN201610248719A CN105911386B CN 105911386 B CN105911386 B CN 105911386B CN 201610248719 A CN201610248719 A CN 201610248719A CN 105911386 B CN105911386 B CN 105911386B
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- 238000010998 test method Methods 0.000 title claims abstract description 22
- 230000007704 transition Effects 0.000 title claims abstract description 19
- 238000012360 testing method Methods 0.000 claims abstract description 128
- 238000007689 inspection Methods 0.000 claims abstract description 4
- 239000004020 conductor Substances 0.000 claims description 39
- 238000009413 insulation Methods 0.000 claims description 31
- 238000004132 cross linking Methods 0.000 claims description 28
- 238000013461 design Methods 0.000 claims description 16
- 238000010438 heat treatment Methods 0.000 claims description 16
- 230000004087 circulation Effects 0.000 claims description 14
- 230000005611 electricity Effects 0.000 claims description 11
- 238000001816 cooling Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- 238000012423 maintenance Methods 0.000 claims description 5
- 238000004080 punching Methods 0.000 claims description 5
- 230000006866 deterioration Effects 0.000 claims description 4
- 230000007547 defect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 2
- 238000003032 molecular docking Methods 0.000 claims description 2
- 230000008771 sex reversal Effects 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 4
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 238000009863 impact test Methods 0.000 description 8
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- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 229920003020 cross-linked polyethylene Polymers 0.000 description 1
- 239000004703 cross-linked polyethylene Substances 0.000 description 1
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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
- G01R31/003—Environmental or reliability tests
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Abstract
A kind of test method for verifying transition Joint Reliability is related to a kind of test method for verifying transition Joint Reliability.Currently without effective, the accurate test method of a kind of pair of transit joint.The present invention is the following steps are included: installation test loop and analog loopback；Determine temperature control cable；Load cycle test is carried out to test loop；DC stacked operating impulse voltage test is carried out to test loop；Carry out DC stacked lightning impulse voltage test；Post-test-inspection.The technical program accurately controls the Wire temperature of test loop by the monitoring temperature to analog loopback, realization, improves the test accuracy of transit joint reliability.And determine temperature control cable, be conducive to the safety for improving test, go on smoothly test can.
Description
Technical field
The present invention relates to a kind of test method for verifying transition Joint Reliability, especially a kind of verifying paper oil insulation cables
With the test method of crosslinking insulated cable transit joint reliability.
Background technique
Eighties of last century, largely using electric (sea) cable of paper oil insulation in international, domestic power transmission engineering, but with crosslinked polyethylene
The continuous development of insulated cable technology, the advantages such as, safe and reliable to operation convenient for installation and maintenance with its gradually replace paper oil insulation electric
Cable, paper oil insulation cable also gradually tend to end-of-life state therewith.And still inevitably can at present in a large amount of paper oil insulation cables of operation
Various failures are generated, failure occurs to face untethered available risk below.
Paper oil insulation cable and crosslinking insulated cable transit joint provide new for the repairing of paper oil insulation cable work
Solution route can use connector realization paper oil insulation cable and crosslinking insulated cable once paper oil insulation cable breaks down
Conversion connection guarantees that transmission line safety is reliably run.
International conference on large HV electric systems (CIGRE) has worked out electrical test for paper oil insulation cable and crosslinking insulated cable respectively
Standard, standard ELECTRA 189b define the test of voltage rating 800kV and following paper oil insulation direct current cables and its attachment
Method, standard CIGRE TB 496 define the test method of voltage rating 500kV and following extruded insulation direct current cables system,
However still lack the test method of system for paper oil insulation cable and crosslinking insulated cable transit joint.Transit joint is by oilpaper
Insulated cable and crosslinking insulated cable are linked together composition compound cable system, and paper oil insulation cable testing standard is used alone
ELECTRA 189b or crosslinking insulated cable testing standard CIGRE TB496 is simultaneously undesirable, and should integrate the content and knot of the two
Zygonema road practical operation situation determines scientific and rational test method.
Summary of the invention
The technical problem to be solved in the present invention and the technical assignment of proposition are to be improved and improved to prior art,
A kind of test method for verifying transition Joint Reliability is provided, to achieve the purpose that transit joint authentic experiments；For this purpose, this hair
It is bright to take following technical scheme.
A kind of test method for verifying transition Joint Reliability, comprising the following steps:
1) test loop and analog loopback are installed；By " dry outdoor terminal+crosslinking insulated cable+transit joint+paper oil insulation electricity
Cable+transit joint+crosslinking insulated cable+dry outdoor terminal " mode test loop is installed；By paper oil insulation cable and cross linked insulation
Cable butting forms analog loopback, and the paper oil insulation cable and crosslinking insulated cable of analog loopback are respectively mounted multiple thermocouples to survey
Conductor temperature is measured, is heated by punching transformer to test loop cable and analog loopback cable, while acquiring analog loopback and leading
Temperature remains that test loop and analog loop current value are equal in collection process, tests back to play and indirectly control
The effect of road cable temperature；
2) temperature control cable is determined；The selection principle of temperature control cable are as follows: to analog loopback loading current, if paper oil insulation cable
Conductor steady temperature reach its highest design value, and the conductor steady temperature of crosslinking insulated cable has not yet been reached, then chooses oil
Paper insulated cable is as temperature control cable；Otherwise, crosslinking insulated cable is chosen；
3) load cycle test is carried out to test loop, in carrying out load cycle test, by punching transformer to examination
Return cable and analog loopback cable heating are tested, while acquiring analog loopback conductor temperature, test is remained in collection process
Circuit and analog loop current are worth equal to play the role of indirectly controlling test loop cable temperature；When cable run need into
When row polarity reverse turn operation, load cycle test, polarity backing propeller test and 48h load cycle test for 24 hours are successively carried out, otherwise,
Successively carry out load cycle test for 24 hours and 48h load cycle test；Load cycle test and 48h load cycle test are being set for 24 hours
Inner conductor temperature of fixing time is not less than the conductor maximum operating temperature design value of temperature control cable；
4) DC stacked operating impulse voltage test is carried out to test loop；
5) DC stacked lightning impulse voltage test is carried out；
6) post-test-inspection；Cable, disassembly attachment are dissected, with normal or correct defects of vision and checked, such as does not find to influence
The deterioration sign that cable system operates normally, then it is assumed that the transit joint has passed through examination, can be used for cable run maintenance.
In the technical scheme, by the monitoring temperature to analog loopback, it is accurate to the Wire temperature of test loop to realize
Control improves the test accuracy of transit joint reliability.And determine temperature control cable, be conducive to the safety for improving test, make
Test can be gone on smoothly.
As further improving and supplementing to above-mentioned technical proposal, the invention also includes following additional technical features.
In step 3), when carrying out load cycle test to the test loop that cable run needs to carry out polarity reversion, packet
Include following steps:
3011) 16 times in total load cycle tests for 24 hours are carried out；Preceding 8 circulations carry out the examination of duty cycle positive polarity voltage
It tests, rear 8 circulations carry out the test of duty cycle reverse voltage；In at least last 2h of heating period, the conductor of temperature control cable
Temperature is not less than maximum operating temperature design value Tc,max；
3012) 8 times in total duty cycle for 24 hours+polarity backing propeller tests are carried out；First since positive polarity voltage, voltage
Polarity inverts 6 times per duty cycle for 24 hours, wherein primary reversion should be consistent with the dwell time of load current in duty cycle for 24 hours,
Polarity reversion should be completed in 2min；It is transported in the conductor temperature of at least last 2h of heating period, temperature control cable not less than highest
Trip temperature design value Tc,max；
3013) 3 times in total 48h load cycle tests are carried out；Apply positive polarity DC voltage+UT, before testing every time
Loading current is heated for 24 hours, subsequent natural cooling for 24 hours；In at least last 18h of heating period, conductor temperature is not less than
The conductor maximum operating temperature design value T of temperature control cablec,max。
In step 3), when not needing to carry out the test loop progress load cycle test of polarity reversion to cable run,
The following steps are included:
3021) 24 times in total load cycle tests for 24 hours are carried out；The preceding 8h loading current tested every time is heated, after
The 16h natural cooling in face；In at least last 2h of heating period, the conductor temperature of temperature control cable is set not less than maximum operating temperature
Evaluation Tc,max；Preceding 12 circulations carry out the test of duty cycle positive polarity voltage, and application voltage is+UT, rear 12 circulations are born
Lotus recycles reverse voltage test, and application voltage is-UT；Allow to have there are one section between the load cycle test of opposed polarity and add
Thermal cycle but the dead time that voltage is not added, the dead time are most short for for 24 hours；
3022) 3 times in total 48h load cycle tests are carried out；Apply positive polarity DC voltage+UT, before testing every time
Loading current is heated for 24 hours, subsequent natural cooling for 24 hours；In at least last 18h of heating period, conductor temperature is not less than
The conductor maximum operating temperature design value T of temperature control cablec,max。
The specific steps of step 4) include: to carry out negative polarity d. c superposition positive polarity operating impulse voltage test first,
Before first impact test, the conductor temperature of temperature control cable is had reached not less than Tc,maxAnd negative polarity d. c voltage-U is bornoIt is super
10h is crossed, DC voltage is kept, is superimposed positive polarity operating impulse voltage continuous 10 times, the peak voltage ranges of superimposed rear waveform
For+Up2(± 3%)；The polarity for then changing high voltage direct current generator, applies positive polarity DC voltage+UoMore than 10h, keep straight
Galvanic electricity pressure is superimposed negative polarity operating impulse voltage continuous 10 times；Each impact test interval is not less than 2min.
Operate the waveform parameter requirement of wave: time to peak range is 250 μ s (± 20%), and half peak value time range is 2500
μ s (± 60%).
The specific steps of step 5) include: to carry out negative polarity d. c superposition positive polarity lightning impulse voltage test first,
Before first impact test, the conductor temperature of temperature control cable is had reached not less than Tc,maxAnd negative polarity d. c voltage-U is bornoIt is super
10h is crossed, DC voltage is kept, is superimposed positive polarity lightning impulse voltage continuous 10 times, the peak voltage ranges of superimposed rear waveform
For+Up1(± 3%)；The polarity for then changing high voltage direct current generator, applies positive polarity DC voltage+UoMore than 10h, keep straight
Galvanic electricity pressure is superimposed negative polarity lightning impulse voltage continuous 10 times；Each impact test interval is not less than 2min.
Lightning wave waveform parameter requirement: wave front time range be 1~5 μ s, half peak value time range be 50 μ s (±
20%), overshoot rate is no more than 10%.
When step 1) installs test loop and analog loopback, the length of every section of paper oil insulation cable and crosslinking insulated cable
At least 8m.
The paper oil insulation cable and crosslinking insulated cable of analog loopback are respectively mounted 2-4 thermocouple, the peace of neighboring thermocouple
It fills spacing and is not less than 0.5m.If multiple thermocouples can accurate thermometric, after avoiding single thermocouple from failing, cause thermometric inaccurate
The case where occur, and thermocouple is provided separately, and many places sampling, can avoid local temperature influences.
The utility model has the advantages that in the technical scheme, by the monitoring temperature to analog loopback, realizing the electric wire to test loop
Temperature accurately controls, and improves the test accuracy of transit joint reliability.And determine temperature control cable, be conducive to the peace for improving test
Quan Xing go on smoothly test can；Now to the verifying of crosslinking insulated cable and paper oil insulation cable transition Joint Reliability, card
Bright its has the good electrical performance for being able to satisfy expected use condition, demonstrates crosslinking insulated cable in oilpaper from the angle of test
Feasibility and applicability in insulated cable maintenance.
Detailed description of the invention
Fig. 1 is flow chart of the present invention.
Fig. 2 is present invention installation test loop structure principle chart.
Fig. 3 is analog loopback structure principle chart of the present invention.
Specific embodiment
Technical solution of the present invention is described in further detail below in conjunction with Figure of description；
As shown in Figure 1, the present invention includes the following steps:
1) test loop and analog loopback are installed.By " it is exhausted that dry outdoor terminal 1+ crosslinking insulated cable 2+ transition connects 3+oilpaper
Edge cable 4+ transit joint 5+ crosslinking insulated cable 6+ dry outdoor terminal 7 " mode test loop, as shown in Fig. 2, every section are installed
The length of cable is at least 8m；By paper oil insulation cable 11 and the docking composition analog loopback of crosslinking insulated cable 12, such as 3 institute of attached drawing
Show, every section of cable length is at least 8m, and every section of cable installs 3 thermocouples 13 to measure conductor temperature, the installation of thermocouple 13
Spacing should be not less than 0.5m.Analog loopback by punching transformer 14 to test loop cable and analog loopback cable for being added
Heat, while analog loopback conductor temperature is acquired, remain that test loop and analog loop current value are equal in collection process, from
And play the role of indirectly controlling test loop cable temperature.
2) temperature control cable is determined.The selection principle of temperature control cable are as follows: to analog loopback loading current, if paper oil insulation cable
Conductor steady temperature reach its highest design value, and the conductor steady temperature of crosslinking insulated cable has not yet been reached, then chooses oil
Paper insulated cable is as temperature control cable；Otherwise, crosslinking insulated cable is chosen.
3) judge whether cable working line needs to carry out polarity reverse turn operation.If you do not need to carrying out polarity reversion, then
Execute step 4)；Otherwise, step 5)~6 are executed).
4) 24 times in total load cycle tests for 24 hours are carried out.The preceding 8h loading current tested every time is heated, subsequent
16h natural cooling；It is not less than maximum operating temperature design value in the conductor temperature of at least last 2h of heating period, temperature control cable
Tc,max.Preceding 12 circulations carry out the test of duty cycle positive polarity voltage, and application voltage is+UT, rear 12 circulations carry out load and follow
The test of ring reverse voltage, application voltage are-UT.Allow there are one section to there is heating to follow between the load cycle test of opposed polarity
Ring but the dead time that voltage is not added, the dead time are most short for for 24 hours.
5) 16 times in total load cycle tests for 24 hours are carried out.Preceding 8 circulations carry out the test of duty cycle positive polarity voltage,
8 circulations carry out the test of duty cycle reverse voltage afterwards.The test heat condition of every circulation is identical as step 4).
6) 8 times in total duty cycle for 24 hours+polarity backing propeller tests are carried out.The test heat condition of every circulation and step 4) phase
Together.First since positive polarity voltage, polarity of voltage inverts 6 mean allocations per duty cycle for 24 hours), wherein primary reversion is answered
Consistent with the dwell time of load current in duty cycle for 24 hours, polarity reversion should be completed in 2min.
7) 3 times in total 48h load cycle tests are carried out.Apply positive polarity DC voltage+UT, test every time it is preceding for 24 hours
Loading current is heated, subsequent natural cooling for 24 hours；In at least last 18h of heating period, conductor temperature is not less than temperature control
The conductor maximum operating temperature design value T of cablec,max。
8) DC stacked operating impulse voltage test is carried out.Negative polarity d. c superposition positive polarity switching impulse electricity is carried out first
Pressure test, before first impact test, the conductor temperature of temperature control cable is had reached not less than Tc,maxAnd negative polarity d. c is born
Voltage-UoMore than 10h, DC voltage is kept, is superimposed positive polarity operating impulse voltage continuous 10 times, the peak value of superimposed rear waveform
Voltage is+Up2(± 3%)；The polarity for then changing high voltage direct current generator, applies positive polarity DC voltage+UoMore than 10h, protect
DC voltage is held, is superimposed negative polarity operating impulse voltage continuous 10 times, the crest voltage of superimposed rear waveform is-Up2(± 3%).
Each impact test interval is not less than 2min, and operate the waveform parameter requirement of wave: time to peak is 250 μ s (± 20%), half-peak
The value time is 2500 μ s (± 60%).
9) DC stacked lightning impulse voltage test is carried out.Negative polarity d. c superposition positive polarity lightning impulse electricity is carried out first
Pressure test, before first impact test, the conductor temperature of temperature control cable is had reached not less than Tc,maxAnd negative polarity d. c is born
Voltage-UoMore than 10h, DC voltage is kept, is superimposed positive polarity lightning impulse voltage continuous 10 times, the peak value of superimposed rear waveform
Voltage is+Up1(± 3%)；The polarity for then changing high voltage direct current generator, applies positive polarity DC voltage+UoMore than 10h, protect
DC voltage is held, is superimposed negative polarity lightning impulse voltage continuous 10 times, the crest voltage of superimposed rear waveform is-Up1(± 3%).
Each impact test interval is not less than 2min, and the waveform parameter requirement of lightning wave: wave front time is 1~5 μ s, and half time to peak is
50 μ s (± 20%), overshoot rate are no more than 10%.
10) post-test-inspection.Cable, disassembly attachment are dissected, with normal or correct defects of vision and checked, such as finds no electricity
Gas deterioration, leakage, corrosion or harmful contraction etc. influence the deterioration sign that cable system operates normally, then it is assumed that the transit joint
Pass through examination, can be used for cable run maintenance.
Shown in figure 1 above -3 it is a kind of verify transition Joint Reliability test method be specific embodiments of the present invention,
Embodied substantive distinguishing features of the present invention and progress, can according to it is actual use needs, under the inspiration of the present invention, to its into
The equivalent modifications of row shape, structure etc., the column in the protection scope of this programme.
Claims (9)
1. a kind of test method for verifying transition Joint Reliability, it is characterised in that the following steps are included:
1) test loop and analog loopback are installed；By " dry outdoor terminal+crosslinking insulated cable+transit joint+paper oil insulation cable+
Transit joint+crosslinking insulated cable+dry outdoor terminal " mode test loop is installed；By paper oil insulation cable and cross linked insulation electricity
Cable docking composition analog loopback, the paper oil insulation cable and crosslinking insulated cable of analog loopback are respectively mounted multiple thermocouples to measure
Conductor temperature is heated to test loop cable and analog loopback cable by punching transformer, while acquiring analog loopback conductor
Temperature remains that test loop and analog loop current value are equal in collection process, indirectly controls test loop to play
The effect of cable temperature；
2) temperature control cable is determined；The selection principle of temperature control cable are as follows: to analog loopback loading current, if paper oil insulation cable is led
Body steady temperature reaches its highest design value, and the conductor steady temperature of crosslinking insulated cable has not yet been reached, then it is exhausted to choose oilpaper
Edge cable is as temperature control cable；Otherwise, crosslinking insulated cable is chosen；
3) load cycle test is carried out to test loop, in carrying out load cycle test, is tested back by punching transformer
Road cable and analog loopback cable heating, while analog loopback conductor temperature is acquired, test loop is remained in collection process
It is worth with analog loop current equal to play the role of indirectly controlling test loop cable temperature；When cable run needs to carry out pole
When sex reversal operates, load cycle test, polarity backing propeller test and 48h load cycle test for 24 hours are successively carried out, otherwise, successively
Carry out load cycle test and 48h load cycle test for 24 hours；Load cycle test and 48h load cycle test are in setting for 24 hours
Between inner conductor temperature be not less than temperature control cable conductor maximum operating temperature design value；
4) DC stacked operating impulse voltage test is carried out to test loop；
5) DC stacked lightning impulse voltage test is carried out to test loop；
6) post-test-inspection；Cable, disassembly attachment are dissected, with normal or correct defects of vision and checked, does not find such as to influence cable
The deterioration sign that system operates normally, then it is assumed that the transit joint has passed through examination, can be used for cable run maintenance.
2. a kind of test method for verifying transition Joint Reliability according to claim 1, it is characterised in that: in step 3)
In, when carrying out load cycle test to the test loop that cable run needs to carry out polarity reversion, comprising the following steps:
3011) 16 times in total load cycle tests for 24 hours are carried out；Preceding 8 circulations carry out the test of duty cycle positive polarity voltage, after
8 times circulation carries out the test of duty cycle reverse voltage；In at least last 2h of heating period, the conductor temperature of temperature control cable is not
Lower than maximum operating temperature design value Tc,max；
3012) 8 times in total duty cycle for 24 hours+polarity backing propeller tests are carried out；First since positive polarity voltage, polarity of voltage
It is inverted 6 times per duty cycle for 24 hours, wherein primary reversion should be consistent with the dwell time of load current in duty cycle for 24 hours, polarity
Reversion should be completed in 2min；In at least last 2h of heating period, the conductor temperature of temperature control cable is not less than highest operation temperature
Spend design value Tc,max；
3013) 3 times in total 48h load cycle tests are carried out；Apply positive polarity DC voltage+UT, test every time it is preceding for 24 hours plus
It carries electric current to be heated, subsequent natural cooling for 24 hours；In at least last 18h of heating period, conductor temperature is not less than temperature control electricity
The conductor maximum operating temperature design value T of cablec,max。
3. a kind of test method for verifying transition Joint Reliability according to claim 1, it is characterised in that: in step 3)
In, when not needing to carry out the test loop progress load cycle test of polarity reversion to cable run, comprising the following steps:
3021) 24 times in total load cycle tests for 24 hours are carried out；The preceding 8h loading current tested every time is heated, subsequent
16h natural cooling；It is not less than maximum operating temperature design value in the conductor temperature of at least last 2h of heating period, temperature control cable
Tc,max；Preceding 12 circulations carry out the test of duty cycle positive polarity voltage, and application voltage is+UT, rear 12 circulations carry out load and follow
The test of ring reverse voltage, application voltage are-UT；Allow there are one section to there is heating to follow between the load cycle test of opposed polarity
Ring but the dead time that voltage is not added, the dead time are most short for for 24 hours；
3022) 3 times in total 48h load cycle tests are carried out；Apply positive polarity DC voltage+UT, test every time it is preceding for 24 hours plus
It carries electric current to be heated, subsequent natural cooling for 24 hours；In at least last 18h of heating period, conductor temperature is not less than temperature control electricity
The conductor maximum operating temperature design value T of cablec,max。
4. a kind of test method for verifying transition Joint Reliability according to claim 1, it is characterised in that: step 4)
Specific steps include: to carry out negative polarity d. c superposition positive polarity operating impulse voltage test first, in first impulse voltage test
Before, the conductor temperature of temperature control cable has reached not less than Tc,maxAnd negative polarity d. c voltage-U is bornoMore than 10h, keep straight
Galvanic electricity pressure is superimposed positive polarity operating impulse voltage continuous 10 times, and the peak voltage ranges of superimposed rear waveform are+Up2(± 3%)；
The polarity for then changing high voltage direct current generator, applies positive polarity DC voltage+UoMore than 10h, DC voltage is kept, superposition is negative
Polar operation surge voltage continuous 10 times；Each impulse voltage test interval is not less than 2min.
5. a kind of test method for verifying transition Joint Reliability according to claim 4, it is characterised in that: operate wave
Waveform parameter requirement: time to peak range is 250 μ s ± 20%, and half peak value time range is 2500 μ s ± 60%.
6. a kind of test method for verifying transition Joint Reliability according to claim 1, it is characterised in that: step 5)
Specific steps include: to carry out negative polarity d. c superposition positive polarity lightning impulse voltage test first, in first impulse voltage test
Before, the conductor temperature of temperature control cable has reached not less than Tc,maxAnd negative polarity d. c voltage-U is bornoMore than 10h, keep straight
Galvanic electricity pressure is superimposed positive polarity lightning impulse voltage continuous 10 times, and the peak voltage ranges of superimposed rear waveform are+Up1± 3%；With
The polarity for changing high voltage direct current generator afterwards, applies positive polarity DC voltage+UoMore than 10h, DC voltage is kept, is superimposed cathode
Property lightning impulse voltage continuous 10 times；Each impulse voltage test interval is not less than 2min.
7. a kind of test method for verifying transition Joint Reliability according to claim 6, it is characterised in that: lightning wave
Waveform parameter requirement: wave front time range is 1~5 μ s, and half peak value time range is 50 μ s ± 20%, and overshoot rate is no more than
10%.
8. a kind of test method for verifying transition Joint Reliability according to claim 1, it is characterised in that: in step 1)
When installing test loop and analog loopback, the length of every section of paper oil insulation cable and crosslinking insulated cable is at least 8m.
9. a kind of test method for verifying transition Joint Reliability according to claim 1, it is characterised in that: analog loopback
Paper oil insulation cable and crosslinking insulated cable be respectively mounted 2-4 thermocouple, the clipping room of neighboring thermocouple is away from being not less than 0.5m.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06281687A (en) * | 1993-03-26 | 1994-10-07 | Matsushita Electric Ind Co Ltd | Tester of continuity of connector cable |
| JPH0815365A (en) * | 1994-04-28 | 1996-01-19 | Showa Electric Wire & Cable Co Ltd | Cable tester |
| CN103323703A (en) * | 2013-05-30 | 2013-09-25 | 武汉大学 | Cable connector fault diagnosing method |
| CN203881880U (en) * | 2014-04-04 | 2014-10-15 | 国家电网公司 | Detection and wireless inspection system for intermediate joint of power cable |
| CN105115626A (en) * | 2015-09-17 | 2015-12-02 | 李成 | Intelligent monitoring system and method for single-core high-voltage cable connector |
| CN105301427A (en) * | 2015-10-26 | 2016-02-03 | 新疆金风科技股份有限公司 | Fault diagnosis method of cable joint and fault diagnosis device of cable joint |
| CN102944777B (en) * | 2012-10-31 | 2016-03-30 | 广州供电局有限公司 | Cable detection method in serviceable life |
| CN105444904A (en) * | 2015-12-10 | 2016-03-30 | 国网四川省电力公司巴中供电公司 | High voltage cable terminal connector temperature caution system |
-
2016
- 2016-04-20 CN CN201610248719.6A patent/CN105911386B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06281687A (en) * | 1993-03-26 | 1994-10-07 | Matsushita Electric Ind Co Ltd | Tester of continuity of connector cable |
| JPH0815365A (en) * | 1994-04-28 | 1996-01-19 | Showa Electric Wire & Cable Co Ltd | Cable tester |
| CN102944777B (en) * | 2012-10-31 | 2016-03-30 | 广州供电局有限公司 | Cable detection method in serviceable life |
| CN103323703A (en) * | 2013-05-30 | 2013-09-25 | 武汉大学 | Cable connector fault diagnosing method |
| CN203881880U (en) * | 2014-04-04 | 2014-10-15 | 国家电网公司 | Detection and wireless inspection system for intermediate joint of power cable |
| CN105115626A (en) * | 2015-09-17 | 2015-12-02 | 李成 | Intelligent monitoring system and method for single-core high-voltage cable connector |
| CN105301427A (en) * | 2015-10-26 | 2016-02-03 | 新疆金风科技股份有限公司 | Fault diagnosis method of cable joint and fault diagnosis device of cable joint |
| CN105444904A (en) * | 2015-12-10 | 2016-03-30 | 国网四川省电力公司巴中供电公司 | High voltage cable terminal connector temperature caution system |
Non-Patent Citations (1)
| Title |
|---|
| 油纸电缆与交联电缆过渡接头的新制作方法;何继进;《电世界》;20111130(第11期);第12-13页 |
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