CN106154121B - A kind of cable system insulating fault diagnosis method - Google Patents
A kind of cable system insulating fault diagnosis method Download PDFInfo
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- CN106154121B CN106154121B CN201510143929.4A CN201510143929A CN106154121B CN 106154121 B CN106154121 B CN 106154121B CN 201510143929 A CN201510143929 A CN 201510143929A CN 106154121 B CN106154121 B CN 106154121B
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Abstract
The technology belongs to insulating fault diagnosis method field, and in particular to a kind of cable system insulating fault diagnosis method.It solves the problems, such as long-term existing insulation failure detection time length, high failure rate in cable system test, provides effective method for extensive cable system insulation tube arrester, fully verify the quality of production of cable system, there is great application and popularization value.It is R to obtain resistance value including testS；First pair of core point is carried out, the whether qualified conclusion of first pair of core point insulating is provided, test terminates；Lower a pair of of core point is switched to, until the insulation tube arrester between all core points of cable system finishes, end is tested.
Description
Technical field
The technology belongs to insulating fault diagnosis method field, and in particular to a kind of cable system insulating fault diagnosis method.
Background technology
Extensive cable system is used in the models such as weapon, carrier rocket, and cable system will be insulated before manufacture, is resistance to
The tests such as pressure, conducting resistance value, currently, cable system Insulation test is always a heavy, time-consuming job in each model, it is traditional
Test method is to be tested to insulate with megger, relies on tester and carries out cable system insulation tube arrester manually, people in test process
Member be easy fatigue, generate retest, test leakage, test less than the problems such as, solution prevailing for the time being in force be using cable system survey
The Insulation test that instrument completes cable system is tried, which is to carry out insulation tube arrester to cable core point successively automatically, is not required to very important person
Work intervention reduces human cost, but when testing the continuous insulation of multichannel, take it is longer, if instrument diagnostic method is not
It is perfect, the probability of happening of erroneous judgement will be improved.So that there are hidden danger for range test, to ensure the correctness of cable system Insulation test
And applicability meets the quick, safe and accurate, complete detection of cable system there is an urgent need to study insulating fault diagnosis method
It is required that fully verifying the quality of production of cable system.
Invention content
It is an object of the invention to：A kind of cable system insulating fault diagnosis method is provided, realize multichannel, quickly, it is accurate
Cable system insulation tube arrester.
Technical scheme is as follows：A kind of cable system insulating fault diagnosis method, includes the following steps：
Step 1：Assuming that device temperature stability is TI；Insulation judgement limit value is 100M Ω, and first pair of core point is chosen to carry out
First time Insulation test, it is R that test, which obtains resistance value,S1；
Step 2：If test resistance value RS1<When 100k Ω；System does not switch core point, and second is carried out to first pair of core point
Secondary test, if test resistance value RS2>100k Ω then terminate step 2, are executed at the beginning from step again；If test resistance
Value RS2<100k Ω then continue third time and test；It is reciprocal successively, until the tenth test resistance value RS10<100k Ω, that is, connect
Continue ten test resistance value RSRespectively less than 100k Ω, provide first pair of unqualified conclusion of core point insulating, and test terminates；
Step 3：If 100k Ω≤RS1When≤100M Ω；System does not switch core point, if it is R ' that test, which obtains resistance value,S,
The test of 30 minor insulation is carried out continuously to first pair of core point, to test data (1, R 'S1) ..., (30, R 'S30) use least square
Method linear fit obtains the intercept a and slope b of straight line；If slope b≤device temperature stability TI, provide first pair of core point
Insulate unqualified conclusion, and test terminates；If slope b>Device temperature stability TI, then step 3 is terminated, again from step 1
Start to execute；
Step 4：If 100M Ω<RS1；System does not switch core point, and carrying out second to the first core point tests, if testing
It is R " to resistance valueS2If R "S2≤ 100M Ω, then end step four, execute from step at the beginning again, if test resistance
Value R "S2>100M Ω then continue third time and test；It is reciprocal successively, until the tenth test resistance value R "S10>100M Ω, i.e.,
Continuous ten test resistance value R "S100M Ω are all higher than, first pair of core point insulating qualification conclusion is provided, test terminates.
Further include step 5 after the step 4：Lower a pair of of core point is switched to, repeats step 1 to step 4, Zhi Dao electricity
Insulation tube arrester between all core points of cable net finishes, and terminates test.
The remarkable result of the present invention is：Solve the long-term existing insulation failure detection time in cable system test it is long,
The problem of high failure rate, provides effective method for extensive cable system insulation tube arrester, fully verifies cable system
The quality of production, have great application and popularization value.
Specific implementation mode
A kind of cable system insulating fault diagnosis method, includes the following steps：
Step 1：Assuming that device temperature stability is TI；Insulation judgement limit value is 100M Ω, and first pair of core point is chosen to carry out
First time Insulation test, it is R that test, which obtains resistance value,S1；
Step 2：If test resistance value RS1<When 100k Ω；System does not switch core point, and second is carried out to first pair of core point
Secondary test, if test resistance value RS2>100k Ω then terminate step 2, are executed at the beginning from step again；If test resistance
Value RS2<100k Ω then continue third time and test；It is reciprocal successively, until the tenth test resistance value RS10<100k Ω, that is, connect
Continue ten test resistance value RSRespectively less than 100k Ω, provide first pair of unqualified conclusion of core point insulating, and test terminates；
Step 3：If 100k Ω≤RS1When≤100M Ω；System does not switch core point, if it is R ' that test, which obtains resistance value,S,
The test of 30 minor insulation is carried out continuously to first pair of core point, to test data (1, R 'S1) ..., (30, R 'S30) use least square
Method linear fit obtains the intercept a and slope b of straight line；If slope b≤device temperature stability TI, provide first pair of core point
Insulate unqualified conclusion, and test terminates；If slope b>Device temperature stability TI, then step 3 is terminated, again from step 1
Start to execute；
Step 4：If 100M Ω<RS1；System does not switch core point, and carrying out second to the first core point tests, if testing
It is R " to resistance valueS2If R "S2≤ 100M Ω, then end step four, execute from step at the beginning again, if test resistance
Value R "S2>100M Ω then continue third time and test；It is reciprocal successively, until the tenth test resistance value R "S10>100M Ω, i.e.,
Continuous ten test resistance value R "S100M Ω are all higher than, first pair of core point insulating qualification conclusion is provided, test terminates.
Step 5：Lower a pair of of core point is switched to, repeats step 1 to step 4, the insulation between all core points of cable system
Fault diagnosis finishes, and terminates test.
Claims (2)
1. a kind of cable system insulating fault diagnosis method, it is characterised in that：Include the following steps：
Step 1：Assuming that device temperature stability is TI；Insulation judgement limit value is 100M Ω, and first pair of core point is chosen to carry out first
Minor insulation is tested, and it is R that test, which obtains resistance value,S1；
Step 2：If test resistance value RS1<When 100k Ω；System does not switch core point, and carrying out second to first pair of core point surveys
Examination, if test resistance value RS2>100k Ω then terminate step 2, are executed at the beginning from step again；If test resistance value
RS2<100k Ω then continue third time and test；It is reciprocal successively, until the tenth test resistance value RS10<100k Ω, i.e., continuously
Ten test resistance value RSRespectively less than 100k Ω, provide first pair of unqualified conclusion of core point insulating, and test terminates；
Step 3：If 100k Ω≤RS1When≤100M Ω；System does not switch core point, if it is R ' that test, which obtains resistance value,S, to
A pair of of core point is carried out continuously the test of 30 minor insulation, to test data (1, R 'S1) ..., (30, R 'S30) use least square normal
Property fitting, obtain the intercept a and slope b of straight line；If slope b≤device temperature stability TI, provide first pair of core point insulating
Unqualified conclusion, test terminate；If slope b>Device temperature stability TI, then step 3 is terminated, again at the beginning from step
It executes；
Step 4：If 100M Ω<RS1；System does not switch core point, and carrying out second to the first core point tests, if test obtains electricity
Resistance value is R "S2If R "S2≤ 100M Ω, then end step four, execute from step at the beginning again, if test resistance value
R″S2>100M Ω then continue third time and test；It is reciprocal successively, until the tenth test resistance value R "S10>100M Ω, that is, connect
Continue ten test resistance value R "S100M Ω are all higher than, first pair of core point insulating qualification conclusion is provided, test terminates.
2. a kind of cable system insulating fault diagnosis method according to claim 1, it is characterised in that：After the step 4
It further include step 5：Lower a pair of of core point is switched to, repeats step 1 to step 4, until the insulation event between all core points of cable system
Barrier diagnosis finishes, and terminates test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510143929.4A CN106154121B (en) | 2015-03-30 | 2015-03-30 | A kind of cable system insulating fault diagnosis method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510143929.4A CN106154121B (en) | 2015-03-30 | 2015-03-30 | A kind of cable system insulating fault diagnosis method |
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| Publication Number | Publication Date |
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| CN106154121A CN106154121A (en) | 2016-11-23 |
| CN106154121B true CN106154121B (en) | 2018-11-02 |
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| CN201510143929.4A Active CN106154121B (en) | 2015-03-30 | 2015-03-30 | A kind of cable system insulating fault diagnosis method |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109270568A (en) * | 2018-08-21 | 2019-01-25 | 中广核工程有限公司 | A kind of nuclear power plant's Nuclear Instrument detector and cable performance detection method and system |
| CN109188214B (en) * | 2018-08-22 | 2019-11-29 | 云南电网有限责任公司电力科学研究院 | A kind of simulation of EP rubbers cable terminal insulation layer typical fault and test method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2814423Y (en) * | 2005-01-18 | 2006-09-06 | 北京铁路局工电大修处天津电务段 | Electric cable insulation tester |
| CN102520316A (en) * | 2011-12-15 | 2012-06-27 | 重庆鸽牌电线电缆有限公司 | Method for quickly and accurately positioning fault point of cable |
| CN104133137A (en) * | 2014-07-24 | 2014-11-05 | 上海镭隆科技发展有限公司 | Portable cable test device and method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0772199A (en) * | 1993-09-01 | 1995-03-17 | Mitsubishi Heavy Ind Ltd | Cable insulation diagnosis method and device |
| KR101330091B1 (en) * | 2012-09-12 | 2013-11-18 | 이관우 | Method of life-decision for high-voltage cables in operation |
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2015
- 2015-03-30 CN CN201510143929.4A patent/CN106154121B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2814423Y (en) * | 2005-01-18 | 2006-09-06 | 北京铁路局工电大修处天津电务段 | Electric cable insulation tester |
| CN102520316A (en) * | 2011-12-15 | 2012-06-27 | 重庆鸽牌电线电缆有限公司 | Method for quickly and accurately positioning fault point of cable |
| CN104133137A (en) * | 2014-07-24 | 2014-11-05 | 上海镭隆科技发展有限公司 | Portable cable test device and method |
Non-Patent Citations (1)
| Title |
|---|
| "电缆网阻值测试仪的设计与实现";徐超等;《宇航计测技术》;20140415;第34卷(第2期);第43-46页 * |
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