CN106950473B - Zero value detector for spark gap - Google Patents
Zero value detector for spark gap Download PDFInfo
- Publication number
- CN106950473B CN106950473B CN201710168409.8A CN201710168409A CN106950473B CN 106950473 B CN106950473 B CN 106950473B CN 201710168409 A CN201710168409 A CN 201710168409A CN 106950473 B CN106950473 B CN 106950473B
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- China
- Prior art keywords
- probe
- discharge electrode
- supporting plate
- insulator
- gap
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- 239000000523 sample Substances 0.000 claims abstract description 48
- 239000012212 insulator Substances 0.000 claims abstract description 29
- 238000001514 detection method Methods 0.000 claims abstract description 22
- 238000007599 discharging Methods 0.000 claims abstract description 9
- 229910052573 porcelain Inorganic materials 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 230000005684 electric field Effects 0.000 description 3
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- 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
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1245—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of line insulators or spacers, e.g. ceramic overhead line cap insulators; of insulators in HV bushings
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Abstract
The invention discloses a spark gap zero value detector which comprises a holding rod, a supporting plate, an alternating current motor and a rotor wing, wherein the supporting plate is semi-arc-shaped, a first discharge electrode and a second discharge electrode are fixedly arranged on the supporting plate in a gap mode, the first discharge electrode and the second discharge electrode are symmetrical along a semi-arc-shaped central axis, and a first probe and a second probe are respectively fixedly arranged at two ends of the semi-arc-shaped supporting plate. According to the invention, the first probe and the second probe (spark gap probe) are adopted to short-circuit the insulator, gap air between the first probe and the second probe is broken down under the action of the distributed voltage of the insulator, leakage current of the insulator passes through the detection loop, and the AC motor connected in series on the loop is connected while discharging at the gap, so that the AC motor drives the rotor to rotate. Therefore, the judgment signal of the test result can be intuitively represented, and meanwhile, the discharge sound is also generated, so that the influence on the judgment of the test result due to the noisy environment is avoided, and the detection precision and efficiency are greatly improved.
Description
Technical Field
The invention relates to the technical field of live detection of zero value and low value of a porcelain insulator of a power transmission line, in particular to a spark gap zero value detector.
Background
At present, zero value detection of the porcelain insulator of the power transmission line is an important measure for measuring the operation condition of the porcelain insulator. In the zero value detection process of the porcelain insulator of the power transmission line, an operator generally adopts a spark gap test method, when the spark gap detects the insulator, when the carbon steel probe approaches the surface of the insulator, the surface electric field of the insulator can enable the surface of the probe to generate induction charges, so that a local electric field is formed, the field intensity is enhanced along with the reduction of the distance between the two electric fields, finally, the insulator is discharged to the probe, and a 'squeak' discharging sound is accompanied, so that the 'squeak' discharging sound is used for judging the result, but the sound is very similar to the discharging sound when the good insulator is detected, and misjudgment is easily caused: corona discharge sound of the wire is very similar to discharge sound when detecting good insulators, and erroneous judgment is easy to cause; in addition, in field high-altitude operation, environmental noise interference such as strong wind and running vehicles is often encountered, so that repeated listening is needed during detection, the detection time is prolonged, and the judgment accuracy is greatly reduced.
Disclosure of Invention
The invention aims to provide a spark gap zero value detector which has a simple structure, is convenient to operate, can intuitively detect the zero value of a porcelain insulator of a power transmission line, shortens the working time, improves the working efficiency and ensures the safety of operators.
The invention adopts the technical scheme that:
the spark gap zero value detector comprises a holding rod, a supporting plate arranged at the end part of the holding rod, an alternating current motor and a rotor wing arranged at the end part of an output shaft of the alternating current motor, wherein the supporting plate is semi-arc-shaped, a first discharging electrode and a second discharging electrode are fixedly arranged in a gap in the supporting plate and are symmetrical along a semi-arc-shaped central shaft, a first probe and a second probe are respectively fixedly arranged at the two ends of the semi-arc-shaped supporting plate, the first probe is electrically connected with the first discharging electrode, and the second probe is electrically connected with the second electrode and is respectively connected with a power inlet end of the alternating current motor in series.
The supporting plate is hinged with the holding rod.
The device also comprises an electrode mounting rack, the first discharge electrode and the second discharge electrode are respectively arranged on the supporting plate through the electrode mounting rack, and the first discharge electrode and the second discharge electrode are respectively adjusted and fixed in clearance by nuts and gaskets matched with the first discharge electrode and the second discharge electrode.
According to the invention, the first probe and the second probe (spark gap probe) are adopted to short-circuit the insulator, gap air between the first probe and the second probe is broken down under the action of the distributed voltage of the insulator, leakage current of the insulator passes through the detection loop, and the AC motor connected in series on the loop is connected while discharging at the gap, so that the AC motor drives the rotor to rotate. Therefore, the judgment signal of the test result can be intuitively represented, and meanwhile, the discharge sound is also generated, so that the influence on the judgment of the test result due to the noisy environment is avoided, and the detection precision and efficiency are greatly improved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
fig. 2 is a right side view of the present invention.
Detailed Description
As shown in fig. 1 and 2, the invention comprises a spark gap zero value detector, which comprises a holding rod, a supporting plate 1 arranged at the end part of the holding rod, an alternating current motor 9 and a rotor wing arranged at the end part of an output shaft of the alternating current electrode, wherein the supporting plate 1 is in a semi-arc shape, a first discharge electrode 2 and a second discharge electrode 12 are fixedly arranged on the supporting plate 1 in a gap, the first discharge electrode 2 and the second discharge electrode 12 are symmetrical along the central axis of the semi-arc shape, a first probe 7 and a second probe 13 are respectively fixedly arranged at the two ends of the semi-arc supporting plate 1, the first probe 7 is electrically connected with the first discharge electrode 2, and the second probe 13 and the second electrode 12 are respectively connected with the power inlet end of the alternating current motor 9 in series.
The support plate 1 is hinged with the holding rod 14, and the first probe and the second probe which are arranged on the support plate 1 can be conveniently rotated at random through the hinge 8 or other hinged parts, so that the detection is more convenient and safer. The first discharge electrode 2 and the second discharge electrode 12 are respectively arranged on the supporting plate 1 through the electrode mounting frame 5, gaps between the first discharge electrode 2 and the second discharge electrode 12 are respectively adjusted and fixed through the nuts 3 and the gaskets 4, and the first probe 7 and the second probe 13 are respectively fixedly arranged with the supporting plate 1 through the probe fixing piece frame 6.
An alternating current motor 9 with a rotor is connected in series on a spark gap detection loop (shown in fig. 1 and 2) through a motor connecting wire 10, when the detection is carried out, the first probe 7 and the second probe 13 (spark gap probes) short-circuit insulators, under the action of insulator distribution voltage, gap air between the first probe 7 and the second probe 13 is broken down, and the insulator leakage current passes through the detection loop, and when the gap is discharged, the alternating current motor 9 connected in series on the loop is connected, so that the rotor is driven to rotate. Therefore, the discrimination signal representing the test result has discharge sound and rotor rotation, and the intuitiveness is greatly improved. The motor connecting wire 10 is connected in series to a spark gap detection circuit (as shown in fig. 1 and 2), and when the detection is performed, the first probe 7 and the second probe 13 short-circuit the insulators, gap air is broken down under the action of the insulator distribution voltage, and insulator leakage current passes through the detection circuit.
Claims (1)
1. Spark gap zero value detector, its characterized in that: the device comprises a holding rod, a supporting plate arranged at the end part of the holding rod, an alternating current motor and a rotor wing arranged at the end part of an output shaft of the alternating current motor, wherein the supporting plate is in a semi-arc shape, a first discharge electrode and a second discharge electrode are fixedly arranged on the supporting plate in a gap, the first discharge electrode and the second discharge electrode are symmetrical along a semi-arc central axis, a first probe and a second probe are respectively fixedly arranged at two ends of the semi-arc supporting plate, the first probe is electrically connected with the first discharge electrode, and the second probe is electrically connected with the second electrode and is respectively connected with a power inlet end of the alternating current motor in series; the supporting plate is hinged with the holding rod; the device comprises a support plate, a first discharge electrode, a second discharge electrode, a nut, a gasket, a first electrode mounting rack, a second electrode mounting rack, a first electrode and a second electrode mounting rack, wherein the first discharge electrode and the second discharge electrode are respectively arranged on the support plate through the electrode mounting rack, and the first discharge electrode and the second discharge electrode are respectively adjusted and fixed in a gap through the nut and the gasket which are matched with the first discharge electrode and the second discharge electrode; the first probe and the second probe are fixedly installed with the supporting plate through the probe fixing piece frame respectively;
an alternating current motor with a rotor wing is connected in series on a spark gap detection loop through a motor connecting wire, when in detection, the first probe and the second probe short-circuit an insulator, gap air between the first probe and the second probe is broken down under the action of distributed voltage of the insulator, leakage current of the insulator passes through the detection loop, and the alternating current motor connected in series on the loop is connected to drive the rotor wing to rotate while discharging at the gap; the motor connecting wire is connected in series on the spark gap detection loop, when in detection, the first probe and the second probe short-circuit the insulator, gap air is broken down under the action of insulator distribution voltage, and insulator leakage current passes through the detection loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710168409.8A CN106950473B (en) | 2017-03-21 | 2017-03-21 | Zero value detector for spark gap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710168409.8A CN106950473B (en) | 2017-03-21 | 2017-03-21 | Zero value detector for spark gap |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106950473A CN106950473A (en) | 2017-07-14 |
| CN106950473B true CN106950473B (en) | 2024-02-23 |
Family
ID=59473301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710168409.8A Active CN106950473B (en) | 2017-03-21 | 2017-03-21 | Zero value detector for spark gap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106950473B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109490725A (en) * | 2018-11-13 | 2019-03-19 | 广西电网有限责任公司电力科学研究院 | The isolator detecting system for having active intelligent recognition function |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05119107A (en) * | 1991-09-30 | 1993-05-18 | Ngk Insulators Ltd | Detector of fault of insulator of suspension type lightning guard insulator device having aerial discharge gap |
| RU2299487C1 (en) * | 2005-09-22 | 2007-05-20 | Олег Георгиевич Егоров | Method for switching heavy-current dc circuits |
| CN202522665U (en) * | 2012-01-09 | 2012-11-07 | 贵州电网公司输电运行检修分公司 | Spark gap needle capable of accurate null detection for porcelain insulator |
| CN102944745A (en) * | 2012-11-09 | 2013-02-27 | 甘肃省电力公司检修公司 | Insulator detector for live-line operation of 750kV line |
| CN204758763U (en) * | 2015-06-03 | 2015-11-11 | 国家电网公司 | Easily adjust electrified insulator spark intermittent type detection device of formula transmission line |
| CN206773130U (en) * | 2017-03-21 | 2017-12-19 | 国家电网公司 | Spark gap zero value detection instrument |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9249773B2 (en) * | 2012-10-23 | 2016-02-02 | GM Global Technology Operations LLC | Apparatus and method for static testing a spark plug assembled in an internal combustion engine including cracked ceramic insulator detection |
-
2017
- 2017-03-21 CN CN201710168409.8A patent/CN106950473B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05119107A (en) * | 1991-09-30 | 1993-05-18 | Ngk Insulators Ltd | Detector of fault of insulator of suspension type lightning guard insulator device having aerial discharge gap |
| RU2299487C1 (en) * | 2005-09-22 | 2007-05-20 | Олег Георгиевич Егоров | Method for switching heavy-current dc circuits |
| CN202522665U (en) * | 2012-01-09 | 2012-11-07 | 贵州电网公司输电运行检修分公司 | Spark gap needle capable of accurate null detection for porcelain insulator |
| CN102944745A (en) * | 2012-11-09 | 2013-02-27 | 甘肃省电力公司检修公司 | Insulator detector for live-line operation of 750kV line |
| CN204758763U (en) * | 2015-06-03 | 2015-11-11 | 国家电网公司 | Easily adjust electrified insulator spark intermittent type detection device of formula transmission line |
| CN206773130U (en) * | 2017-03-21 | 2017-12-19 | 国家电网公司 | Spark gap zero value detection instrument |
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| Publication number | Publication date |
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| CN106950473A (en) | 2017-07-14 |
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