CN203720243U - Anti-interference device for arrester leakage current detection - Google Patents
Anti-interference device for arrester leakage current detection Download PDFInfo
- Publication number
- CN203720243U CN203720243U CN201420063916.7U CN201420063916U CN203720243U CN 203720243 U CN203720243 U CN 203720243U CN 201420063916 U CN201420063916 U CN 201420063916U CN 203720243 U CN203720243 U CN 203720243U
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- China
- Prior art keywords
- arrester
- lightning arrester
- leakage current
- current transformer
- shading ring
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- Expired - Lifetime
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- 238000001514 detection method Methods 0.000 title abstract description 4
- 238000012544 monitoring process Methods 0.000 claims description 13
- 230000007547 defect Effects 0.000 abstract description 2
- 229910052573 porcelain Inorganic materials 0.000 abstract description 2
- 239000012212 insulator Substances 0.000 description 9
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
The utility model relates to an anti-interference device for arrester leakage current detection. Compared with the prior art, the defect that external stray capacitance of arresters interferes with arrester leakage current detection is solved. The anti-interference device comprises an arrester body (1), an on-line arrester monitor (5) and a current transformer (6), wherein the on-line arrester monitor (5) is connected with the current transformer (6). The anti-interference device further comprises a shielding ring (2). The shielding ring (2) sleeves the arrester body (1), the shielding ring (2) is arranged in a position which is 10cm above a tail-end umbrella skirt (7), and the shielding ring (2) is grounded through a shielding grounding wire (3). A grounding screw (8) of the arrester body (1) is connected with a grounding wire (4) which is grounded after passing through the current transformer (6). Leakage current generated by external stray capacitance of an arrester porcelain sleeve can be effectively shielded, and collected data is more accurate.
Description
Technical field
The utility model relates to lightning arrester technical field, is a kind of means for anti-jamming detecting for leakage current of an arrester specifically.
Background technology
In electric system is produced, guarantee that the safety of lightning arrester is extremely important, once lightning arrester has an accident, just can cause heavy losses, so that the daily monitoring for lightning arrester running status seems is very important.To the conventional method of lightning arrester on-line monitoring, be harmonic analysis method at present, by gathering the leakage current of lightning arrester, realize, by current transformer, gather the leakage current of lightning arrester.It is a lot of that but lightning arrester affects the extraneous factor of leakage current size in operational process, the leakage current of its generation is the vector of electric current and the electric current that outside insulator produces of inner core body generation, the data that particularly stray capacitance of the outside insulator of lightning arrester can collect instrument cause interference, make measurement result and actual conditions occur deviation, thus the judgement of impact to lightning arrester state.How to develop a kind of means for anti-jamming that can remove insulator stray capacitance and become the technical matters of being badly in need of solution.
Utility model content
The purpose of this utility model is lightning arrester Leakage Current to be detected to the defect of disturbing in order to solve the outside stray capacitance of lightning arrester in prior art, provides a kind of means for anti-jamming detecting for leakage current of an arrester to solve the problems referred to above.
To achieve these goals, the technical solution of the utility model is as follows:
A kind of means for anti-jamming detecting for leakage current of an arrester, comprise lightning arrester body, lightning arrester on-line monitoring instrument summation current transformer, described lightning arrester on-line monitoring instrument is connected with current transformer, also comprise shading ring, described shading ring is enclosed within on lightning arrester body, and the 10cm place, top of tail end cluster parachute is located in the position of shading ring, and shading ring is by bonding line ground connection, on the grounding screw rod of described lightning arrester body, be connected to ground wire, ground wire is through ground connection after current transformer.
Described bonding line and the external diameter of ground wire is 10mm, internal diameter is 5mm.
Described bonding line and the length of ground wire are 100cm.
beneficial effect
A kind of means for anti-jamming detecting for leakage current of an arrester of the present utility model, compared with prior art can effectively shield the Leakage Current that the outside stray capacitance of arrestor porcelain bushing produces, and makes the data that collect more accurate.By outside insulator is utilized to shading ring ground connection, introduce the earth not affecting creepage leakage current insulator being produced than distance in the situation that of lightning arrester, the signal that current transformer is collected is more accurate, has got rid of the impact of some extraneous factors of lightning arrester on signals collecting precision on largely.There is feature simple in structure, with low cost, be convenient to promote on a large scale.
accompanying drawing explanation
Fig. 1 is structural representation of the present utility model
Wherein, 1-lightning arrester body, 2-shading ring, 3-bonding line, 4-ground wire, 5-lightning arrester on-line monitoring instrument, 6-current transformer, 7-tail end cluster parachute, 8-grounding screw rod.
Embodiment
For making that architectural feature of the present utility model and the effect reached are had a better understanding and awareness, in order to preferred embodiment and accompanying drawing, coordinate detailed explanation, be described as follows:
As shown in Figure 1, a kind of means for anti-jamming detecting for leakage current of an arrester described in the utility model, comprise lightning arrester body 1, lightning arrester on-line monitoring instrument 5 summation current transformers 6, lightning arrester on-line monitoring instrument 5 is connected with current transformer 6, and lightning arrester on-line monitoring instrument 5 is for detection of the leakage current numerical value through current transformer 6.Also comprise shading ring 2, shading ring 2 is that a metal material is enclosed within the ring on lightning arrester body 1, for guiding the leakage current producing on the insulator of lightning arrester body 1.Shading ring 2 is enclosed within on lightning arrester body 1, and creepage than distance in order to guarantee not affect lightning arrester, by formula and data, calculates, and the position of shading ring 2 should be located to the 10cm place, top of tail end cluster parachute 7.On lightning arrester body 1, have a plurality of cluster parachutes, last cluster parachute is located in the position of shading ring 2, the 10cm place, top of tail end cluster parachute 7, is in order to guarantee not affect the creepage distance that compares of lightning arrester.Shading ring 2 is by bonding line 3 ground connection, and bonding line 3 one ends are connected on shading ring 2, and the direct ground connection of the other end so just can be introduced the earth by the leakage current producing on lightning arrester body 1 insulator by shading ring 2.On the grounding screw rod 8 of lightning arrester body 1, be connected to ground wire 4, ground wire 4 is through the rear ground connection of current transformer 6.The ground wire 4 picking out from the grounding screw rod 8 of lightning arrester body 1 like this, is exactly to have removed the Leakage Current that outside insulator produces, and is the Leakage Current that the inner core body of lightning arrester body 1 produces.Creepage than distance in order better to guarantee test accuracy and not affect lightning arrester, the external diameter of bonding line 3 and ground wire 4 can be 10mm, internal diameter is 5mm.The length of bonding line 3 and ground wire 4 also can be 100cm.
When reality is used, shading ring 2 is directly introduced the earth by the leakage current producing on lightning arrester body 1 insulator by bonding line 3.Ground wire 4 draws from lightning arrester body 1 Leakage Current that the inner core body of lightning arrester body 1 produces, and through the rear introducing the earth of current transformer 6.Lightning arrester on-line monitoring instrument 5 records by current transformer 6 Leakage Current that the inner core body of current lightning arrester body 1 produces, thereby carries out Real-Time Monitoring, has improved monitoring accuracy, has guaranteed the use safety of lightning arrester.
More than show and described ultimate principle of the present utility model, principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what in above-described embodiment and instructions, describe is principle of the present utility model; under the prerequisite that does not depart from the utility model spirit and scope, the utility model also has various changes and modifications, and these changes and improvements all fall in claimed scope of the present utility model.The protection domain that the utility model requires is defined by appending claims and equivalent thereof.
Claims (3)
1. the means for anti-jamming detecting for leakage current of an arrester, comprise lightning arrester body (1), lightning arrester on-line monitoring instrument (5) summation current transformer (6), described lightning arrester on-line monitoring instrument (5) is connected with current transformer (6), it is characterized in that: also comprise shading ring (2), described shading ring (2) is enclosed within on lightning arrester body (1), the 10cm place, top of tail end cluster parachute (7) is located in the position of shading ring (2), shading ring (2) is by bonding line (3) ground connection, on the grounding screw rod (8) of described lightning arrester body (1), be connected to ground wire (4), ground wire (4) is through ground connection after current transformer (6).
2. a kind of means for anti-jamming detecting for leakage current of an arrester according to claim 1, is characterized in that: described bonding line (3) and the external diameter of ground wire (4) is 10mm, internal diameter is 5mm.
3. a kind of means for anti-jamming detecting for leakage current of an arrester according to claim 2, is characterized in that: described bonding line (3) and the length of ground wire (4) are 100cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420063916.7U CN203720243U (en) | 2014-02-13 | 2014-02-13 | Anti-interference device for arrester leakage current detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420063916.7U CN203720243U (en) | 2014-02-13 | 2014-02-13 | Anti-interference device for arrester leakage current detection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203720243U true CN203720243U (en) | 2014-07-16 |
Family
ID=51159384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420063916.7U Expired - Lifetime CN203720243U (en) | 2014-02-13 | 2014-02-13 | Anti-interference device for arrester leakage current detection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203720243U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103792415A (en) * | 2014-02-13 | 2014-05-14 | 国家电网公司 | Anti-interference device for lightning arrester leakage current detection |
| CN109975595A (en) * | 2019-04-08 | 2019-07-05 | 山东大学 | A kind of leakage current sensor and device of anti-power frequency magnetic field interference |
-
2014
- 2014-02-13 CN CN201420063916.7U patent/CN203720243U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103792415A (en) * | 2014-02-13 | 2014-05-14 | 国家电网公司 | Anti-interference device for lightning arrester leakage current detection |
| CN109975595A (en) * | 2019-04-08 | 2019-07-05 | 山东大学 | A kind of leakage current sensor and device of anti-power frequency magnetic field interference |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140716 |