CN102621456A - Method and device for detecting planar defects of insulating tool on site - Google Patents
Method and device for detecting planar defects of insulating tool on site Download PDFInfo
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- CN102621456A CN102621456A CN2011104574459A CN201110457445A CN102621456A CN 102621456 A CN102621456 A CN 102621456A CN 2011104574459 A CN2011104574459 A CN 2011104574459A CN 201110457445 A CN201110457445 A CN 201110457445A CN 102621456 A CN102621456 A CN 102621456A
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Abstract
The invention provides a method and a device which are used for detecting planar defects of an insulating tool on site. A 5KV high voltage is applied on a plane on the site by using a piece of detection equipment, and the defect situation of the insulating tool is judged by the comparison of a feedback current signal and a standard signal so as to guarantee operation safety. The method for detecting interlayered defects of the insulating too on the site comprises the following steps: 1, distributing a high voltage end and a low voltage end of detection electrodes along the plane of the insulating tool, applying 5KV high voltage on the two electrodes, and moving the electrodes to obtain a voltage feedback signal; and 2, inputting the acquired feedback voltage signal and the standard signal into a comparer, inputting an output signal of the comparer to an alarm module, and the alarm module indicates the situation of the planar defects. The device for detecting the planar defects of the insulating tool is convenient to carry and convenient to operate, and is high in detection safety and high in precision of detection results.
Description
Technical field
The present invention relates to insulating tool along planar defect detection method and device; Belong to hot line job insulating protection apparatus and insulation and cover apparatus along the on-the-spot detection technique of planar defect field, relate in particular to insulating tool along planar defect in-situ check and test method and the insulating tool that adopts this method along the face pick-up unit.
Background technology
Use insulating tool in the hot line job, the safety protective tools kind is many; Textural difference is big; Its insulating property are directly connected to the safety of operating personnel and equipment, so the management of insulating tool and safety protective tools and use and must meet relevant regulations in " State Grid Corporation of China's electric power safety working regulation (circuit pack) ", before live line tool uses; Answer that scrutiny is confirmed not damage, made moist, distortion, malfunctioning, otherwise ban use of.And use 2500V and above insulation resistance meter or insulation tester to carry out segmentation and detect (the wide 2cm of electrode, the wide 2cm of interpolar), resistance should be not less than 700M Ω.The regulation that strictly observes in the safety regularly makes an experiment, and in time finds the defective and the hidden danger that exist.
The hot line job safety protective tools comprises the insulating protection apparatus, the insulation shading tool, and the shielding apparatus, long-term use makes surface abrasion easily, and long-pending dirty, humidity causes reducing along face resistance, has influenced electrical insulation properties, threatens job safety.Whether existing insulating tool detection method at first is the quality of inspection insulation, pierce through and come unglued through eye-observation, has or not phenomenons such as gas leakage or breach.,, under the prerequisite that guarantees the insulating tool clean dry, the insulating tool immersion test is used in the insulation liquid bath if there is not above defective through observing; Apply voltage through the electrode pair insulating tool, according to the insulating tool of different brackets, the different institutes of selecting with leakage current values of ac voltage withstanding value add high voltage; Add the high voltage some minutes; As do not have flashover, nothing puncture, obviously heating of nothing, then test is passed through, otherwise can not pass through.More than test all need be carried out in dielectric, all is in testing laboratory, to accomplish, and is that interlayer is detected, and can't satisfy on-the-spot along face detection needs.
Insulating tool should carry out one time preventive trial in general about 6 months; Before carrying out preventive trial; Because the on-the-spot detection of insulating tool correlation technique achievement in research is few; Add the shortage of on-the-spot checkout equipment,, use these insulating tools that have defective to carry out operation and injure staff's personal safety even insulating tool exists defective also to be not easy to come to light along face.Therefore, need launch research along the on-the-spot detection technique of planar defect, develop on-the-spot checkout equipment, to guarantee carrying out smoothly of operation to insulating tool.Do not launch research as yet both at home and abroad to on-the-spot detection technique of insulating tool and equipment; In the equipment development process; Not having ready-made standards and norms can supply to use for reference; Can only be on the basis of the domestic and international various insulation Work tool testing laboratory's detection technique achievements in research of investigation (comprising principle, technical standard, use experience etc.); Should satisfy characteristics such as simple to operate, easy to use, that detection is efficient according to the on-the-spot checkout equipment of insulation Work tool defective, its principle, function and technical conditions etc. are designed and develop.
The bibliographical information of relevant this respect for example application number is the utility model patent of 200820068230.1 by name light composite type dielectric test device; Disclose a kind of light composite type dielectric test device, related to a kind of test unit that is used to detect the insulating tool insulating property.Dress insulating bar test ground-electrode, mask platform upper bracket on the all-around test stand; Magnet steel; Dress insulating bar test high-field electrode, electroscope proving ring electrode on the magnet steel; Connect mask test electrode bar between mask platform upper bracket and the mask platform undersetting, connect electroscope test ball electrode on the electroscope proving ring electrode, all-around test stand dress leakage current table.This utility model can be directed against 10KV various sizes insulating bar on same test platform, 0,1,2,3 different stage insulated targets, and the electroscope below the insulation clothing, mask and 35KV carries out electrical performance test.Yet, above-mentioned patent do not relate to a kind of insulating tool along planar defect in-situ check and test method and the insulating tool that adopts this method along the face pick-up unit, and this respect is not still seen the correlation technique document.
In sum; Also there are not at present standards and norms can directly instruct of the development of insulation Work tool along the on-the-spot checkout equipment of planar defect; Need on the various defect detecting techniques of Macro or mass analysis basis, carry out autonomous innovation, development is applicable to the on-the-spot equipment that detects of insulating tool defective.
In view of this, be necessary to provide a kind of insulating tool along planar defect in-situ check and test method and device, the method and device can realize that insulating tool is carried out the scene along planar defect to be detected, and can guarantee job safety and staff's personal safety.
Summary of the invention
Technical matters to be solved by this invention is: for solving the problem that insulating tool lacks along the on-the-spot detection technique of planar defect; The invention provides a kind of insulating tool along planar defect in-situ check and test method and pick-up unit; Adopt the method and device can realize that insulating tool is carried out the scene along planar defect to be detected, and can guarantee job safety and staff's personal safety.
The technical scheme that the present invention adopted is: a kind of insulating tool is made up of power supply, high pressure generation module, detecting electrode, detection module, alarm module along the planar defect on-site detecting device, it is characterized in that:
Power supply provides required WV to entire circuit;
The high pressure generation module is used for the supply voltage output of boosting, and converts the high-voltage alternating of output into the 5kV DC voltage;
Detecting electrode is made up of connecting link, binding post, electrode three parts, and the surface that is arranged in insulating tool to be detected is along the line, and one of them electrode connects the 5kV high direct voltage during detection, another one connecting to neutral current potential;
Detection module comprises high pressure output, sampling module, normal voltage generation module, comparison module, and detection module is measured insulating tool and compared along face resistance and with measuring resistance, and comparative result exports alarm module to;
Alarm module is used to indicate the insulating tool defective, and sends sound and light alarm.
Aforesaid insulating tool is along the planar defect on-site detecting device; It is characterized in that: said high pressure generation module is made up of control signal generation module, isolation module, switch control module, boost module; Wherein the control signal generation module adopts multivibrator; Constitute as main control chip by NE555, be used for generation amplitude, frequency, dutycycle, adjustable pwm signal; Isolation module is made up of photoelectrical coupler, is used for electrical isolation, prevents that voltage from going here and there mutually, burns chip; Switch control module is made up of the MOSFET power tube, and the control through pwm signal comes DC voltage is carried out the DC-AC conversion, and direct current is transformed into alternating current; Boost module is that alternating current is boosted and rectification, generates the high voltage direct current of 5kV.
The present invention also provides a kind of insulating tool along the planar defect in-situ check and test method, adopts aforesaid insulating tool along the planar defect on-site detecting device, it is characterized in that, comprises the steps:
1) high-pressure side and the low pressure end with detecting electrode is arranged in the surperficial along the line of insulating tool, on the two poles of the earth, applies the 5kV high pressure, and the position of traveling electrode, obtains voltage feedback signal;
2) with feedback voltage signal that obtains and standard signal input comparator, comparator output signal input alarm module, alarm module is indicated along the planar defect situation.
The invention has the beneficial effects as follows: show that through on-the-spot the use this insulating tool is easy to carry along the planar defect on-site detecting device, and is easy to operate; The detection degree of safety is high, and the testing result precision is high.
Description of drawings
Fig. 1 is the system chart of the insulating tool of the embodiment of the invention along the planar defect on-site detecting device.
Fig. 2 is the system chart of the high pressure generation systems among Fig. 1.
Fig. 3 is the structural representation along the face detecting electrode among Fig. 1.
Fig. 4 is the system chart of the detection module among Fig. 1.
Fig. 5 is the multivibrator circuit schematic diagram in the high pressure generation systems.
Embodiment
In order to understand the present invention better, further illustrate content of the present invention below in conjunction with embodiment, but content of the present invention not only is confined to following embodiment.Those skilled in the art can do various changes or modification to the present invention, and these equivalent form of values are equally within the listed claims limited range of the application.
Symbol description among Fig. 1: 1.1-power supply, 1.2-high pressure generation module, 1.3-detection module, 1.4-alarm module.
Symbol description among Fig. 2: 2.1-control signal generation module, 2.2-isolation module, 2.3-switch control module, 2.4-boost module.
Symbol description among Fig. 4: the output of 3.1-high pressure, 3.2-sampling module, 3.3-normal voltage generation module, 3.4-comparison module.
The principle of work of the inventive method is: if because of filthy or moist when causing along planar defect, resistance is less than 700M Ω, when insulating tool applies the 5kV high pressure along face 2cm is wide; Dividing potential drop above it is less than measuring resistance 700M Ω dividing potential drop; The sample resistance voltage of series connection with it raises, overgauge voltage signal, comparer output high level; Drive warning circuit, warning circuit sends sound and light alarm.
The insulating tool interlayer defective on-site detecting device that the embodiment of the invention provides is made up of power supply, high pressure generation module, detecting electrode, detection module, alarm module.
With reference to Fig. 1, be system block diagram of the present invention, wherein power supply provides WV to entire circuit; The high pressure generation module is used for producing the required 5kV high pressure of detection; Detection module is used to obtain the 5kV HVDC and is applied to behind face, the feedback signal on the divider resistance, and this signal input comparator and standard signal compared; Alarm module, when insulating tool when there is defective in face, trigger warning circuit, carry out alarm.
With reference to Fig. 2, for detecting the high-pressure generating circuit system chart along planar defect, power supply is that entire circuit provides working power; The control signal generation module comprises multivibrator circuit and peripheral circuit thereof, is to be made up of as main control chip NE555, is used for generation amplitude, frequency, dutycycle, adjustable pwm signal; Isolation module is made up of photoelectrical coupler, is used for electrical isolation, prevents that voltage from going here and there mutually, burns chip; Switch control module is made up of the MOSFET power tube, and the control through pwm signal comes DC voltage is carried out the DC-AC conversion, and direct current is transformed into alternating current; Boost module, it mainly acts on is that alternating current is boosted, and rectification, generates the high voltage direct current of 5kV.
Fig. 3 is along the face detecting electrode, by connecting link, and binding post, three parts of electrode are formed.Connecting link is a long 60mm, and diameter is the insulation material right cylinder of 10mm, and the connecting link symcenter is deducted a circular hole and is used to connect handle, and handled easily uses.Conductor and electrode all are full copper materials, and conductor is that a diameter is 5mm, and length is the right cylinder of 40mm, two ends that connect connecting link respectively of two conductors, and the other end connects two electrodes respectively.Two electrodes all are that the length of side is the cube of 20mm, electrode gap 20mm, and two electrode coaxial arrangement are received the high-pressure side and the earth terminal of high pressure generator.
With reference to Fig. 4, for along the planar defect detection module, high-voltage power supply output 5kV direct current wherein is for sampling is prepared; Sampling module is to be used for measuring sampling by the measured resistance dividing potential drop of connecting with sample resistance; The normal voltage generation module is the bleeder circuit of being connected and forming with measuring resistance by 700M Ω resistance; Comparison module be that module 2 and voltage in the module 3 are compared output; Alarm module is to be used for judging relatively exporting the result, if resistance value less than the resistance 700M Ω of safety regulation then drive along the planar defect warning circuit, is sent sound and light alarm.
With reference to Fig. 5, be the multivibrator circuit schematic diagram of the control signal generation module in the high pressure generation module, constitute by the NE555 integrated chip; This chip has required resistor, capacitor is simple; The operating power scope is very big, can with TTL, logical circuits such as CMOS cooperate; The supplying electric current of output terminal is big, can directly promote the advantages such as load of multiple automatic control.NE555 cooperates the pulse signal that produces certain frequency, amplitude with peripheral circuit, partly keep apart the shutoff of this pulse signal power controlling switching tube through optical coupling isolator and high voltage.
Insulating tool provided by the invention is along the planar defect in-situ check and test method; The insulating tool that the 5kV HVDC is applied to wide 2cm through electrode is along face, if having defective along face, resistance reduces; Feedback voltage overgauge voltage; The comparer output voltage drives warning circuit, indicates the insulating tool defective through the acousto-optic mode, may further comprise the steps:
1) high-pressure side and the low pressure end with detecting electrode is arranged in the surperficial along the line of insulating tool, on the two poles of the earth, applies the 5kV high pressure, and the position of traveling electrode, obtains voltage feedback signal;
2) with feedback voltage signal that obtains and standard signal input comparator, comparator output signal input warning circuit, warning circuit is indicated along the planar defect situation.
The content of not doing in this instructions to describe in detail belongs to this area professional and technical personnel's known prior art.
Claims (3)
1. an insulating tool is made up of power supply, high pressure generation module, detecting electrode, detection module, alarm module along the planar defect on-site detecting device, it is characterized in that:
Power supply provides required WV to entire circuit;
The high pressure generation module is used for the supply voltage output of boosting, and converts the high-voltage alternating of output into the 5kV DC voltage;
Detecting electrode is made up of connecting link, binding post, electrode three parts, and the surface that is arranged in insulating tool to be detected is along the line, and one of them electrode connects the 5kV high direct voltage during detection, another one connecting to neutral current potential;
Detection module comprises high pressure output, sampling module, normal voltage generation module, comparison module, and detection module is measured insulating tool and compared along face resistance and with measuring resistance, and comparative result exports alarm module to;
Alarm module is used to indicate the insulating tool defective, and sends sound and light alarm.
2. insulating tool according to claim 1 is along the planar defect on-site detecting device; It is characterized in that: said high pressure generation module is made up of control signal generation module, isolation module, switch control module, boost module; Wherein the control signal generation module adopts multivibrator; Constitute as main control chip by NE555, be used for generation amplitude, frequency, dutycycle, adjustable pwm signal; Isolation module is made up of photoelectrical coupler, is used for electrical isolation, prevents that voltage from going here and there mutually, burns chip; Switch control module is made up of the MOSFET power tube, and the control through pwm signal comes DC voltage is carried out the DC-AC conversion, and direct current is transformed into alternating current; Boost module is that alternating current is boosted and rectification, generates the high voltage direct current of 5kV.
3. an insulating tool adopts insulating tool as claimed in claim 1 along the planar defect on-site detecting device along the planar defect in-situ check and test method, it is characterized in that, comprises the steps:
1) high-pressure side and the low pressure end with detecting electrode is arranged in the surperficial along the line of insulating tool, on the two poles of the earth, applies the 5kV high pressure, and the position of traveling electrode, obtains voltage feedback signal;
2) with feedback voltage signal that obtains and standard signal input comparator, comparator output signal input alarm module, alarm module is indicated along the planar defect situation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110457445.9A CN102621456B (en) | 2011-12-31 | 2011-12-31 | Method and device for detecting planar defects of insulating tool on site |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110457445.9A CN102621456B (en) | 2011-12-31 | 2011-12-31 | Method and device for detecting planar defects of insulating tool on site |
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| CN102621456A true CN102621456A (en) | 2012-08-01 |
| CN102621456B CN102621456B (en) | 2015-02-04 |
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| CN201110457445.9A Active CN102621456B (en) | 2011-12-31 | 2011-12-31 | Method and device for detecting planar defects of insulating tool on site |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107621596A (en) * | 2017-07-26 | 2018-01-23 | 贵州电网有限责任公司 | Live line work insulating takes surface insulation performance detecting system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1064948A (en) * | 1992-04-18 | 1992-09-30 | 南京建筑工程学院 | Multifunction insulating monitor |
| CN2140528Y (en) * | 1992-09-23 | 1993-08-18 | 湘潭市金轮新型电器研究所 | Insulator and electrical connector on-line detector |
| CN2876790Y (en) * | 2006-02-23 | 2007-03-07 | 苏州热工研究院有限公司 | Intelligent tester for prevention performance of insulation gloves and boots |
| CN101470156A (en) * | 2008-07-29 | 2009-07-01 | 国网武汉高压研究院 | Direct current poor insulator detection method and its detection electrode and apparatus |
| CN201666919U (en) * | 2010-04-21 | 2010-12-08 | 河南省电力公司南阳供电公司 | High-altitude portable insulator detector |
| JP2011069634A (en) * | 2009-09-24 | 2011-04-07 | Ngk Insulators Ltd | High-voltage application faulty insulator detector |
| CN202522537U (en) * | 2011-12-31 | 2012-11-07 | 国网电力科学研究院 | Insulating tool edge planar defect on-site detection device |
-
2011
- 2011-12-31 CN CN201110457445.9A patent/CN102621456B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1064948A (en) * | 1992-04-18 | 1992-09-30 | 南京建筑工程学院 | Multifunction insulating monitor |
| CN2140528Y (en) * | 1992-09-23 | 1993-08-18 | 湘潭市金轮新型电器研究所 | Insulator and electrical connector on-line detector |
| CN2876790Y (en) * | 2006-02-23 | 2007-03-07 | 苏州热工研究院有限公司 | Intelligent tester for prevention performance of insulation gloves and boots |
| CN101470156A (en) * | 2008-07-29 | 2009-07-01 | 国网武汉高压研究院 | Direct current poor insulator detection method and its detection electrode and apparatus |
| JP2011069634A (en) * | 2009-09-24 | 2011-04-07 | Ngk Insulators Ltd | High-voltage application faulty insulator detector |
| CN201666919U (en) * | 2010-04-21 | 2010-12-08 | 河南省电力公司南阳供电公司 | High-altitude portable insulator detector |
| CN202522537U (en) * | 2011-12-31 | 2012-11-07 | 国网电力科学研究院 | Insulating tool edge planar defect on-site detection device |
Non-Patent Citations (1)
| Title |
|---|
| 刘云: "一种新型直流高压发生器", 《长江大学学报（自然科学版）》, vol. 8, no. 7, 31 July 2011 (2011-07-31), pages 84 - 86 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107621596A (en) * | 2017-07-26 | 2018-01-23 | 贵州电网有限责任公司 | Live line work insulating takes surface insulation performance detecting system |
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