CN104483603A - Withstand voltage detecting method of insulating rod - Google Patents
Withstand voltage detecting method of insulating rod Download PDFInfo
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- CN104483603A CN104483603A CN201410714659.3A CN201410714659A CN104483603A CN 104483603 A CN104483603 A CN 104483603A CN 201410714659 A CN201410714659 A CN 201410714659A CN 104483603 A CN104483603 A CN 104483603A
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- insulating bar
- insulating
- arc column
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Abstract
The invention relates to electric power facilities, in particular to a withstand voltage detecting method of an insulating rod. The withstand voltage detecting method of the insulating rod comprises the following steps of (1) placing a to-be-detected insulating rod on an alternating-current withstand voltage detecting platform; (2) after wiring is detected to be correct, a voltage regulator power supply switch of the alternating-current withstand voltage detecting platform is turned on to perform an applied voltage test; (3) in the process that voltage is slowly increased, observing the shape and color of an arc column part formed when arc discharge is generated in a clearance, and meanwhile, recording the change state of current values displayed on an ammeter; (4) judging the insulating property of the insulating rod according to the shape and color of the arc column part and the change state of the current value. By the technical scheme provided by the invention, whether the property of the insulating rod is qualified or not can be quantificationally and qualitatively analyzed, the probability of missed judgment and error judgment is greatly reduced, and the working efficiency is effectively improved.
Description
Technical field
The present invention relates to electrical facility technical field, particularly, relate to a kind of insulating bar resistance test method.
Background technology
Current each electric company specifies according to " electric-power safe instruments preventive trial code " and " State Grid Corporation of China's electric power safety code ": " managing security tools and instruments of onsite application is answered qualified and meets relevant requirements ".For the insulating bar performance change in preventing from newly purchasing, using or there is hidden danger and cause in use having an accident, the insulating bar relevant regulations as basic insulation managing security tools and instruments when electric equipment works are detected.
The common method of insulating bar ac voltage withstanding testing be by placed side by side for some insulating bars on simple and easy insulating support, two uses exposed copper line parallel to be wound around respectively, a ground connection, a pressurization detects for 1 minute, whether conventional sense standard is to puncture, flashover, the situations such as heating are as the whether qualified basis for estimation of insulating bar, but explanation is not judged to the aging deterioration of insulating bar, experienced testing staff can take auxiliary detection means: namely after step-down rapidly successively hand touch every root insulating bar and whether generate heat, observe outward appearance and whether have burn traces, the drawback of this method is that impossible complete whole hand at synchronization touches test, even if there is heating to exist, by environment, time etc. affect temperature and can change, be easy to erroneous judgement, fail to judge, in addition, if puncture in testing process, then will find out from several insulating bar and take out, and then pressurization is tested, process be more loaded down with trivial details, time-consuming.
Therefore, the present invention proposes a kind of insulating bar resistance test method, can judge that whether the performance of insulating bar is qualified by quantitative and qualitative analysis, considerably reduce the probability of failing to judge, judging by accident, effectively improve work efficiency.
Summary of the invention
Consider the problems such as existing insulating bar resistance test method easily causes erroneous judgement, fails to judge, process is loaded down with trivial details and make the present invention, for this reason, fundamental purpose of the present invention is to provide a kind of insulating bar resistance test method, to solve relevant issues.
For achieving the above object, according to an aspect of the present invention, a kind of method of insulating bar resistance test is provided.
Insulating bar resistance test method of the present invention comprises:
1) be placed in ac voltage withstanding detection platform by insulating bar to be detected, there is gap in one end of described insulating bar and the pressurization pole of described ac voltage withstanding detection platform, the other end is connected with the reometer of described ac voltage withstanding detection platform;
2) the pressure regulator power switch of described ac voltage withstanding detection platform of closing after checking wiring correctly carries out applied voltage test, and described pressure regulator needs the ceiling voltage of generation relevant with the insulating capacity that described insulating bar is demarcated;
3) slowly increasing in alive process, seeing the shape and color of looking into the arc column part formed when arc discharge occurs in described gap, the situation of change of the current value of recording ammeter display simultaneously;
4) judge the insulating property of described insulating bar according to the shape of described arc column part and the situation of change of color and described current value, described judgment basis is relevant with the insulating capacity that described insulating bar is demarcated.
Further, described interstice coverage is 0-10mm.
Further, the test length of described insulating bar is relevant with insulating capacity, when the insulating capacity that described insulating bar is demarcated is 10kv, described test length is 0.7 meter, when the insulating capacity that described insulating bar is demarcated is 35kv, described test length is 0.9 meter, and when the insulating capacity that described insulating bar is demarcated is 110kv, described test length is 0.65 meter.
Further, when the insulating capacity that described insulating bar is demarcated is 10kv, described ceiling voltage is 50kv, when the insulating capacity that described insulating bar is demarcated is 35kv, described ceiling voltage is 98kv, and when the insulating capacity that described insulating bar is demarcated is 110kv, described ceiling voltage is 134kv.
Further, insulating property are divided into and belong to insulate good, insulation slight degradation, insulation serious deterioration Three Estate.
Preferably, when the insulating capacity that described insulating bar is demarcated is 10kv, judge that described insulating bar is bluish violet as the good described judgment basis of insulating property as the arc light of described arc column, described current value is no more than 15 μ A; Judge that the described judgment basis of described insulating bar as insulation slight degradation is rice white, around blueing purple as described arc column, described current value is between 15-21 μ A; Judge that the described judgment basis of described insulating bar as insulation serious deterioration is brilliant white as described arc column, described current value is greater than 21 μ A.
Preferably, when the insulating capacity that described insulating bar is demarcated is 35kv, judge that described insulating bar is bluish violet as the good described judgment basis of insulating property as the arc light of described arc column, described current value is no more than 15 μ A; Judge that the described judgment basis of described insulating bar as insulation slight degradation is rice white, around blueing purple as described arc column, described current value is between 15-22 μ A; Judge that the described judgment basis of described insulating bar as insulation serious deterioration is brilliant white as described arc column, described current value is greater than 22 μ A.
Preferably, when the insulating capacity that described insulating bar is demarcated is 110kv, judge that described insulating bar is bluish violet as the good described judgment basis of insulating property as the arc light of described arc column, described current value is no more than 22 μ A; Judge that the described judgment basis of described insulating bar as insulation slight degradation is rice white, around blueing purple as described arc column, described current value is between 22-31 μ A; Judge that the described judgment basis of described insulating bar as insulation serious deterioration is brilliant white as described arc column, described current value is greater than 31 μ A.
Preferably, the arc column width observed when described insulating bar is in described insulation good level is minimum, and the arc column width observed when being in described insulation serious deterioration grade is maximum, the arc column intermediate width observed when being in described insulation slight degradation grade.
By means of technical scheme provided by the invention, judge by carrying out analysis with interval luminous intensity and leakage current threshold values to testing result when carrying out the detection of insulating bar insulation quality, be rigid in checking up each root insulating bar insulation quality, reduce personal injury risk, this detection technique can effectively be increased work efficiency simultaneously.
Other features and advantages of the present invention will be set forth in the following description, and, partly become apparent from instructions, or understand by implementing the present invention.Object of the present invention and other advantages realize by structure specifically noted in write instructions, claims and accompanying drawing and obtain.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram of the insulating bar resistance test method that the present invention proposes;
Fig. 2 is the realization flow figure of the insulating bar resistance test method that the present invention proposes.
Embodiment
Functional overview
Consider the problems such as existing insulating bar resistance test method easily causes erroneous judgement, fails to judge, process is loaded down with trivial details and make the present invention, for this reason, fundamental purpose of the present invention is to provide a kind of insulating bar resistance test method, to solve relevant issues.
Below in conjunction with accompanying drawing, embodiments of the invention are described.It should be noted that, when not conflicting, the technical characteristic in embodiments of the invention and embodiment can be combined with each other, all within protection scope of the present invention.In addition, for convenience of description, employ step number hereinafter, but this should not be construed as limitation of the present invention, in addition, although each step described in following methods shows logical order in flow charts, in some cases, can be different from the step shown or described by order execution herein.
The insulating bar resistance test side ratio juris of the inventive method embodiment as shown in Figure 1, in figure, TR is pressure regulator, T: testing transformer, A: reometer, V: voltage table, G: ball discharge gap, R: current-limiting resistance, U: input voltage, with the inferior theory of the soup of gas discharge for foundation, support first section of mounting bar-excellent small―gap suture for pressurization pole, gas during pressurization between rod-rod produces ionization, form electron avalanche, ebb-flow discharge is formed under spatial light ionizing event, now form plasma discharge channels between gap, different colours is produced due to the difference of size of current in gap, shape, the arc discharge of intensity, when insulating good, color is bluish violet, not easily observe, during insulation slight degradation, spectrum is ecru, arc column is more carefully observed more obvious, during insulation serious deterioration, arc light is dazzling brilliant white, arc column is thicker, visually just can judge rapidly that whether insulation status is good according to the power of gap discharge, a series connection microampere meter on earthing pole simultaneously, also can find out that the size of electric current whether insulation status is good, make quantitative, the qualitative comprehensive analysis and judgement combined to its insulation.
Embodiment of the method
According to embodiments of the invention, provide a kind of insulating bar resistance test method.
Fig. 2 shows the process flow diagram of the insulating bar resistance test method according to the inventive method embodiment, comprises the steps:
Step S202, is placed on insulating bar to be detected in ac voltage withstanding detection platform, and one end of described insulating bar and the pressurization pole of described ac voltage withstanding detection platform exist gap, and the other end is connected with the reometer of described ac voltage withstanding detection platform;
Step S204, the pressure regulator power switch of described ac voltage withstanding detection platform of closing after checking wiring correctly carries out applied voltage test, and described pressure regulator needs the ceiling voltage of generation relevant with the insulating capacity that described insulating bar is demarcated;
Step S206, is slowly increasing in alive process, sees the shape and color of looking into the arc column part formed when arc discharge occurs in described gap, the situation of change of the current value of recording ammeter display simultaneously;
Step S208, judge the insulating property of described insulating bar according to the shape of described arc column part and the situation of change of color and described current value, described judgment basis is relevant with the insulating capacity that described insulating bar is demarcated.
The details of above-mentioned process is described below in detail.
(1) step S202
Described interstice coverage is 0-10mm, preferred 4mm.
(2) step S204
When the insulating capacity that described insulating bar is demarcated is 10kv, described ceiling voltage is 50kv, and when the insulating capacity that described insulating bar is demarcated is 35kv, described ceiling voltage is 98kv, and when the insulating capacity that described insulating bar is demarcated is 110kv, described ceiling voltage is 134kv.
The test length of described insulating bar is relevant with insulating capacity, when the insulating capacity that described insulating bar is demarcated is 10kv, described test length is 0.7 meter, when the insulating capacity that described insulating bar is demarcated is 35kv, described test length is 0.9 meter, when the insulating capacity that described insulating bar is demarcated is 110kv, described test length is 0.65 meter.
Specifically can with reference to following table.
| Insulating bar rated voltage | Electric pressure/kV | Trial voltage | Revise trial voltage | Test length/m |
| 10kV insulating bar | 10 | 45 | 50 | 0.7 |
| 35kV insulating bar | 35 | 95 | 98 | 0.9 |
| 110kV insulating bar | 110 | 132 | 134 | 0.65 |
(3) step S208
The insulating property of insulating bar are divided into and belong to insulate good, insulation slight degradation, insulation serious deterioration Three Estate.
When the insulating capacity that described insulating bar is demarcated is 10kv, judge that described insulating bar is bluish violet as the good described judgment basis of insulating property as the arc light of described arc column, described current value is no more than 15 μ A; Judge that the described judgment basis of described insulating bar as insulation slight degradation is rice white, around blueing purple as described arc column, described current value is between 15-21 μ A; Judge that the described judgment basis of described insulating bar as insulation serious deterioration is brilliant white as described arc column, described current value is greater than 21 μ A.
When the insulating capacity that described insulating bar is demarcated is 35kv, judge that described insulating bar is bluish violet as the good described judgment basis of insulating property as the arc light of described arc column, described current value is no more than 15 μ A; Judge that the described judgment basis of described insulating bar as insulation slight degradation is rice white, around blueing purple as described arc column, described current value is between 15-22 μ A; Judge that the described judgment basis of described insulating bar as insulation serious deterioration is brilliant white as described arc column, described current value is greater than 22 μ A.
When the insulating capacity that described insulating bar is demarcated is 110kv, judge that described insulating bar is bluish violet as the good described judgment basis of insulating property as the arc light of described arc column, described current value is no more than 22 μ A; Judge that the described judgment basis of described insulating bar as insulation slight degradation is rice white, around blueing purple as described arc column, described current value is between 22-31 μ A; Judge that the described judgment basis of described insulating bar as insulation serious deterioration is brilliant white as described arc column, described current value is greater than 31 μ A.
The arc column width observed when described insulating bar is in described insulation good level is minimum, and the arc column width observed when being in described insulation serious deterioration grade is maximum, the arc column intermediate width observed when being in described insulation slight degradation grade.
In sum, by means of technical scheme provided by the invention, judge by carrying out analysis with interval luminous intensity and leakage current threshold values to testing result when carrying out the detection of insulating bar insulation quality, be rigid in checking up each root insulating bar insulation quality, reduce personal injury risk, this detection technique can effectively be increased work efficiency simultaneously.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a method for insulating bar resistance test, is characterized in that described method comprises:
1) be placed in ac voltage withstanding detection platform by insulating bar to be detected, there is gap in one end of described insulating bar and the pressurization pole of described ac voltage withstanding detection platform, the other end is connected with the reometer of described ac voltage withstanding detection platform;
2) the pressure regulator power switch of described ac voltage withstanding detection platform of closing after checking wiring correctly carries out applied voltage test, and described pressure regulator needs the ceiling voltage of generation relevant with the insulating capacity that described insulating bar is demarcated;
3) slowly increasing in alive process, seeing the shape and color of looking into the arc column part formed when arc discharge occurs in described gap, the situation of change of the current value of recording ammeter display simultaneously;
4) judge the insulating property of described insulating bar according to the shape of described arc column part and the situation of change of color and described current value, described judgment basis is relevant with the insulating capacity that described insulating bar is demarcated.
2. the method for insulating bar resistance test according to claim 1, is characterized in that: described interstice coverage is 0-10mm.
3. the method for insulating bar resistance test according to claim 1, it is characterized in that: the test length of described insulating bar is relevant with insulating capacity, when the insulating capacity that described insulating bar is demarcated is 10kv, described test length is 0.7 meter, when the insulating capacity that described insulating bar is demarcated is 35kv, described test length is 0.9 meter, and when the insulating capacity that described insulating bar is demarcated is 110kv, described test length is 0.65 meter.
4. the method for insulating bar resistance test according to claim 1, it is characterized in that: when the insulating capacity that described insulating bar is demarcated is 10kv, described ceiling voltage is 50kv, when the insulating capacity that described insulating bar is demarcated is 35kv, described ceiling voltage is 98kv, when the insulating capacity that described insulating bar is demarcated is 110kv, described ceiling voltage is 134kv.
5. the method for insulating bar resistance test according to claim 1, is characterized in that: insulating property are divided into and belong to insulate good, insulation slight degradation, insulation serious deterioration Three Estate.
6. the method for insulating bar resistance test according to claim 5, it is characterized in that: when the insulating capacity that described insulating bar is demarcated is 10kv, judge that described insulating bar is bluish violet as the good described judgment basis of insulating property as the arc light of described arc column, described current value is no more than 15 μ A; Judge that the described judgment basis of described insulating bar as insulation slight degradation is rice white, around blueing purple as described arc column, described current value is between 15-21 μ A; Judge that the described judgment basis of described insulating bar as insulation serious deterioration is brilliant white as described arc column, described current value is greater than 21 μ A.
7. the method for insulating bar resistance test according to claim 5, it is characterized in that: when the insulating capacity that described insulating bar is demarcated is 35kv, judge that described insulating bar is bluish violet as the good described judgment basis of insulating property as the arc light of described arc column, described current value is no more than 15 μ A; Judge that the described judgment basis of described insulating bar as insulation slight degradation is rice white, around blueing purple as described arc column, described current value is between 15-22 μ A; Judge that the described judgment basis of described insulating bar as insulation serious deterioration is brilliant white as described arc column, described current value is greater than 22 μ A.
8. the method for insulating bar resistance test according to claim 5, it is characterized in that: when the insulating capacity that described insulating bar is demarcated is 110kv, judge that described insulating bar is bluish violet as the good described judgment basis of insulating property as the arc light of described arc column, described current value is no more than 22 μ A; Judge that the described judgment basis of described insulating bar as insulation slight degradation is rice white, around blueing purple as described arc column, described current value is between 22-31 μ A; Judge that the described judgment basis of described insulating bar as insulation serious deterioration is brilliant white as described arc column, described current value is greater than 31 μ A.
9. the method for insulating bar resistance test according to claim 5, it is characterized in that: the arc column width observed when described insulating bar is in described insulation good level is minimum, the arc column width observed when being in described insulation serious deterioration grade is maximum, the arc column intermediate width observed when being in described insulation slight degradation grade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410714659.3A CN104483603A (en) | 2014-12-02 | 2014-12-02 | Withstand voltage detecting method of insulating rod |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410714659.3A CN104483603A (en) | 2014-12-02 | 2014-12-02 | Withstand voltage detecting method of insulating rod |
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| CN104483603A true CN104483603A (en) | 2015-04-01 |
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| CN201410714659.3A Pending CN104483603A (en) | 2014-12-02 | 2014-12-02 | Withstand voltage detecting method of insulating rod |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112946435A (en) * | 2021-02-02 | 2021-06-11 | 湖北清江水电开发有限责任公司 | Insulating rod voltage-withstanding detection device and method |
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| CN2219498Y (en) * | 1994-12-26 | 1996-02-07 | 洛阳市电力技术开发服务公司 | Portable high-voltage AC electroscope |
| JP5291860B2 (en) * | 2005-12-26 | 2013-09-18 | 日置電機株式会社 | Insulation withstand voltage test equipment |
| CN103728540A (en) * | 2013-12-27 | 2014-04-16 | 国家电网公司 | Alternating-current / direct-current voltage withstand testing device for arc discharge monitoring |
| CN103852601A (en) * | 2013-12-05 | 2014-06-11 | 国家电网公司 | Alternating-current withstand voltage support of insulating rods |
| CN203894368U (en) * | 2014-05-16 | 2014-10-22 | 国网青海省电力公司海东供电公司 | Arc discharge monitoring AC voltage withstand test device |
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2014
- 2014-12-02 CN CN201410714659.3A patent/CN104483603A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2219498Y (en) * | 1994-12-26 | 1996-02-07 | 洛阳市电力技术开发服务公司 | Portable high-voltage AC electroscope |
| JP5291860B2 (en) * | 2005-12-26 | 2013-09-18 | 日置電機株式会社 | Insulation withstand voltage test equipment |
| CN103852601A (en) * | 2013-12-05 | 2014-06-11 | 国家电网公司 | Alternating-current withstand voltage support of insulating rods |
| CN103728540A (en) * | 2013-12-27 | 2014-04-16 | 国家电网公司 | Alternating-current / direct-current voltage withstand testing device for arc discharge monitoring |
| CN203894368U (en) * | 2014-05-16 | 2014-10-22 | 国网青海省电力公司海东供电公司 | Arc discharge monitoring AC voltage withstand test device |
Non-Patent Citations (1)
| Title |
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| 国家质量监督检验检疫总局、国家标准化管理委员会: "《GB 26860-2011电力安全工作规程发电厂和变电站电气部分》", 29 July 2011 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112946435A (en) * | 2021-02-02 | 2021-06-11 | 湖北清江水电开发有限责任公司 | Insulating rod voltage-withstanding detection device and method |
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Application publication date: 20150401 |