CN110444918A - Reduce the method and device of transmission line of electricity grounding body impulse earthed resistance - Google Patents
Reduce the method and device of transmission line of electricity grounding body impulse earthed resistance Download PDFInfo
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- CN110444918A CN110444918A CN201910717850.6A CN201910717850A CN110444918A CN 110444918 A CN110444918 A CN 110444918A CN 201910717850 A CN201910717850 A CN 201910717850A CN 110444918 A CN110444918 A CN 110444918A
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- grounding body
- transmission line
- return electrode
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 33
- 230000005611 electricity Effects 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000004020 conductor Substances 0.000 claims abstract description 28
- 230000001603 reducing effect Effects 0.000 claims abstract description 20
- 230000000694 effects Effects 0.000 claims abstract description 15
- 230000005684 electric field Effects 0.000 claims abstract description 8
- 230000001939 inductive effect Effects 0.000 abstract description 10
- 230000002708 enhancing effect Effects 0.000 abstract description 5
- 230000003313 weakening effect Effects 0.000 abstract description 3
- 241000555268 Dendroides Species 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/66—Connections with the terrestrial mass, e.g. earth plate, earth pin
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
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- Elimination Of Static Electricity (AREA)
Abstract
The invention discloses the methods for reducing transmission line of electricity grounding body impulse earthed resistance, are included in around grounding body and horizontal electrode is arranged；Increase the unevenness of electric field near horizontal electrode, enhances spark effect；Horizontal return electrode is set, and horizontal return electrode is connect with horizontal electrode, reduces grounding body overall inductance.The invention also discloses a kind of earthing or grounding means for reducing transmission line of electricity grounding body impulse earthed resistance, including grounding body, horizontal electrode, horizontal return electrode, needle-shaped conductors, the beginning of horizontal electrode is connect with grounding body, horizontal return electrode is connected through the end of conductor block and horizontal electrode, and needle-shaped conductors are arranged in around horizontal return electrode.Reduce impulse earthed resistance by enhancing spark effect simultaneously and weakening inductive impact two ways, improves the resistance to Lei Shuiping of transmission line of electricity, guarantee transmission line safety stable operation；Needle-shaped conductors and horizontal return electrode make the electric field strength near earthing or grounding means distort under the premise of not increasing earthing or grounding means inductance, enhance spark effect without being directly connected to.
Description
Technical field
The invention belongs to transmission lines of electricity to be grounded field, and in particular to reduce the side of transmission line of electricity grounding body impulse earthed resistance
Method and device.
Background technique
Earthing device of power transmission line is a pith in transmission line of electricity Lighting Protection Measures, line thunder protection energy
No play a role depends mainly on the impulse earthed resistance of earthing device of power transmission line.Impulse earthed resistance refers to earthing or grounding means stream
The resistance value showed when crossing lightning impulse current.In addition to earthing device of power transmission line body construction will affect Contact -impact
Except resistance, spark effect and inductive impact the two factors also have a certain impact to impulse earthed resistance；Wherein, spark is imitated
It should can reduce impulse earthed resistance, inductive impact will increase impulse earthed resistance.Pass through currently, there are some grounding device constructions
Enhancing spark effect is to reduce impulse earthed resistance, however rare earthing or grounding means is by weakening inductive impact to reduce impulse grounding
Resistance.A kind of Chinese patent " more diffusing arm earthing or grounding means for Wind turbines " of Publication No. CN204632938U by
4 horizontal rays electrodes are set on Ring earth electrode, while 3 wire outlet end electrodes are set on horizontal rays electrode, to subtract
Small impulse earthed resistance, however this method will increase inductive impact.The Chinese patent of Publication No. CN106451030A is " a kind of
Reduce the device and method of earth mat impulse earthed resistance " a kind of device for reducing earth mat impulse earthed resistance is disclosed, in level
At least one spark thorn conductor is provided on earth conductor, soil is easier to puncture, and spark effect is very significant.This side
Method is by increasing spark effect to reduce ground resistance, however the spark thorn being connected by setting with earth conductor in this method
Conductor easily causes inductive impact increase, can reduce resistance reducing effect to a certain extent.The China of Publication No. CN204696252U
Patent " a kind of dendroid earthing pole " discloses a kind of dendroid earthing pole, including Ring earth electrode, Ring earth electrode are equipped with
Four horizontal rays electrodes.This structure can effectively improve grounding body impact characteristics, reduce impulse earthed resistance；But this side
Method can not reduce inductive impact.
Summary of the invention
Technical problem of the invention is that the existing earthing or grounding means for reducing transmission line of electricity impulse earthed resistance or method are only led to
Enhancing spark effect is crossed to reduce impulse earthed resistance, the inductive impact of earthing or grounding means can not be reduced, affect earthing or grounding means
Resistance reducing effect.
Present invention aim to address the above problem, provide the method for reducing transmission line of electricity grounding body impulse earthed resistance and
Device reduces impulse earthed resistance by enhancing spark effect simultaneously and weakening inductive impact two ways, improves transmission line of electricity
Resistance to Lei Shuiping guarantees transmission line safety stable operation.
The technical scheme is that reducing the method for transmission line of electricity grounding body impulse earthed resistance, include the following steps,
Step 1: horizontal electrode is set around grounding body；
Step 2: increasing the unevenness of electric field near horizontal electrode, enhance spark effect；
Step 3: horizontal return electrode is set, and horizontal return electrode is connect with horizontal electrode, reduces grounding body overall inductance.
Further, in step 1, horizontal electrode uses horizontal rays electrode.
Further, in step 2, by the way that needle-shaped conductors are arranged near horizontal electrode, make the electric-field strength near grounding body
Degree distortion；
Using the earthing or grounding means for the method for reducing transmission line of electricity grounding body impulse earthed resistance, including grounding body, horizontal electrode, water
The beginning of flat return electrode, insulating layer, needle-shaped conductors, horizontal electrode is connect with grounding body, and horizontal return electrode is arranged in level
Immediately below electrode, horizontal return electrode is connected through the end of conductor block and horizontal electrode, and insulating layer is arranged in horizontal electrode and water
Between flat return electrode, needle-shaped conductors are evenly arranged below horizontal return electrode.
Further, the spacing between horizontal electrode and horizontal return electrode is 2-5mm.
Further, the thickness of insulating layer is 3-5 times of the width of horizontal electrode, the thickness of insulating layer compared with horizontal electrode and
The small 0.5-1 mm of spacing between horizontal return electrode.
Further, the distance between needle-shaped conductors and horizontal return electrode are 1-3mm.
Further, the diameter of needle-shaped conductors is 0.2-0.5mm.
Further, insulating layer, horizontal electrode and horizontal return electrode three equal length.
Compared with prior art, beneficial effects of the present invention pass through while enhancing spark effect and weaken two kinds of sides of inductive impact
Formula reduces impulse earthed resistance, improves the resistance to Lei Shuiping of transmission line of electricity, guarantees transmission line safety stable operation；Meanwhile increasing fire
Needle-shaped conductors and the horizontal return electrode of flower effect can make to be grounded without being directly connected under the premise of not increasing earthing or grounding means inductance
Electric field strength distortion near device, enhances spark effect.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is the flow chart for reducing the method for transmission line of electricity grounding body impulse earthed resistance.
Fig. 2 is the structural schematic diagram for reducing the earthing or grounding means of transmission line of electricity grounding body impulse earthed resistance.
Description of symbols: grounding body 1, horizontal rays electrode 2, horizontal return electrode 3, conductor block 4, insulating layer 5 are needle-shaped
Conductor 6.
Specific embodiment
As shown in Figure 1, reducing the method for transmission line of electricity grounding body impulse earthed resistance, include the following steps,
Step 1: horizontal electrode is set around grounding body；
Step 2: increasing the unevenness of electric field near horizontal electrode, enhance spark effect；
Step 3: horizontal return electrode is set, and horizontal return electrode is connect with horizontal electrode, reduces grounding body overall inductance.
As shown in Fig. 2, the earthing or grounding means of the method using above-mentioned reduction transmission line of electricity grounding body impulse earthed resistance, including
Rectangular grounding body 1, horizontal rays electrode 2, horizontal return electrode 3, needle-shaped conductors 6, horizontal return electrode 3 are arranged in level and penetrate
Immediately below line electrode 2, horizontal return electrode 3 is connect through conductor block 4 with the end of horizontal rays electrode 2, and needle-shaped conductors 6 are arranged in
Around horizontal return electrode 3.4 horizontal rays electrodes 2 are connected respectively to 4 angles of grounding body 1.
Spacing between horizontal rays electrode 2 and horizontal return electrode 3 is 5mm.
Insulating layer 5 is provided between horizontal rays electrode 2 and horizontal return electrode 3.
Insulating layer 5 is arranged between horizontal rays electrode 2 and horizontal return electrode 3, and the width of insulating layer 5 is horizontal electrode
3 times of width, the thickness of insulating layer 5 is for 4.5mm.
The distance between needle-shaped conductors 6 and horizontal return electrode 3 are 3mm.
The diameter of needle-shaped conductors 6 is 0.5mm.
3 three's equal length of insulating layer 5, horizontal rays electrode 2 and horizontal return electrode.
Claims (9)
1. reducing the method for transmission line of electricity grounding body impulse earthed resistance, which is characterized in that include the following steps,
Step 1: horizontal electrode is set around grounding body；
Step 2: increasing the unevenness of electric field near horizontal electrode, enhance spark effect；
Step 3: horizontal return electrode is set, and horizontal return electrode is connect with horizontal electrode, reduces grounding body overall inductance.
2. the method according to claim 1 for reducing transmission line of electricity grounding body impulse earthed resistance, which is characterized in that step
In 1, horizontal electrode uses horizontal rays electrode.
3. the method according to claim 1 for reducing transmission line of electricity grounding body impulse earthed resistance, which is characterized in that step
In 2, by the way that needle-shaped conductors are arranged near horizontal electrode, the electric field strength near grounding body is made to distort.
4. the ground connection of the method for reduction transmission line of electricity grounding body impulse earthed resistance according to claim 1 to 3
Device, which is characterized in that including grounding body, horizontal electrode, horizontal return electrode, insulating layer, needle-shaped conductors, the beginning of horizontal electrode
End is connect with grounding body, and horizontal return electrode is arranged in immediately below horizontal electrode, and horizontal return electrode is through conductor block and level electricity
The end of pole connects, and insulating layer is arranged between horizontal electrode and horizontal return electrode, and needle-shaped conductors are under horizontal return electrode
Side is evenly arranged.
5. the earthing or grounding means according to claim 4 for reducing transmission line of electricity grounding body impulse earthed resistance, which is characterized in that
Spacing between horizontal electrode and horizontal return electrode is 2-5mm.
6. the earthing or grounding means according to claim 4 for reducing transmission line of electricity grounding body impulse earthed resistance, which is characterized in that
The width of insulating layer is 3-5 times of the width of horizontal electrode, and the thickness of insulating layer is compared between horizontal electrode and horizontal return electrode
The small 0.5-1 mm of spacing.
7. the earthing or grounding means according to claim 4 for reducing transmission line of electricity grounding body impulse earthed resistance, which is characterized in that
The distance between needle-shaped conductors and horizontal return electrode are 1-3mm.
8. the earthing or grounding means according to claim 4 for reducing transmission line of electricity grounding body impulse earthed resistance, which is characterized in that
The diameter of needle-shaped conductors is 0.2-0.5 mm.
9. the earthing or grounding means according to claim 4 for reducing transmission line of electricity grounding body impulse earthed resistance, which is characterized in that
Insulating layer, horizontal electrode and horizontal return electrode three equal length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910717850.6A CN110444918B (en) | 2019-08-05 | 2019-08-05 | Method and device for reducing impulse grounding resistance of power transmission line grounding body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910717850.6A CN110444918B (en) | 2019-08-05 | 2019-08-05 | Method and device for reducing impulse grounding resistance of power transmission line grounding body |
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| Publication Number | Publication Date |
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| CN110444918A true CN110444918A (en) | 2019-11-12 |
| CN110444918B CN110444918B (en) | 2021-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910717850.6A Active CN110444918B (en) | 2019-08-05 | 2019-08-05 | Method and device for reducing impulse grounding resistance of power transmission line grounding body |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111755846A (en) * | 2020-07-30 | 2020-10-09 | 河南四达电力设备股份有限公司 | Spark-stab type flexible grounding module and grounding construction method |
| CN114824846A (en) * | 2022-05-19 | 2022-07-29 | 湖南经研电力设计有限公司 | Short conductor-based grounding method for power transmission tower |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010092840A (en) * | 2008-09-12 | 2010-04-22 | Chugoku Electric Power Co Inc:The | Ground electrode |
| CN103474791A (en) * | 2013-09-29 | 2013-12-25 | 国家电网公司 | Radial grounding device with impact impedance reducing function |
| CN207517911U (en) * | 2017-12-20 | 2018-06-19 | 湖北继扬电力科技有限公司 | Multi-pin hollow horizontal grounding body |
| CN109638483A (en) * | 2019-01-24 | 2019-04-16 | 贵州电网有限责任公司 | A kind of novel tree root shape structure spark thorn |
-
2019
- 2019-08-05 CN CN201910717850.6A patent/CN110444918B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010092840A (en) * | 2008-09-12 | 2010-04-22 | Chugoku Electric Power Co Inc:The | Ground electrode |
| CN103474791A (en) * | 2013-09-29 | 2013-12-25 | 国家电网公司 | Radial grounding device with impact impedance reducing function |
| CN207517911U (en) * | 2017-12-20 | 2018-06-19 | 湖北继扬电力科技有限公司 | Multi-pin hollow horizontal grounding body |
| CN109638483A (en) * | 2019-01-24 | 2019-04-16 | 贵州电网有限责任公司 | A kind of novel tree root shape structure spark thorn |
Non-Patent Citations (1)
| Title |
|---|
| 邓长征: "风电机组典型接地装置的降阻措施冲击试验研究", 《高压电器》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111755846A (en) * | 2020-07-30 | 2020-10-09 | 河南四达电力设备股份有限公司 | Spark-stab type flexible grounding module and grounding construction method |
| CN114824846A (en) * | 2022-05-19 | 2022-07-29 | 湖南经研电力设计有限公司 | Short conductor-based grounding method for power transmission tower |
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| CN110444918B (en) | 2021-01-26 |
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Application publication date: 20191112 Assignee: Hubei Feiou Commercial Management Co.,Ltd. Assignor: CHINA THREE GORGES University Contract record no.: X2023980045280 Denomination of invention: Method and device for reducing impulse grounding resistance of grounding electrodes in transmission lines Granted publication date: 20210126 License type: Common License Record date: 20231102 |
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Effective date of registration: 20240130 Address after: 325000, No. 988 Lingzhan Road, Oujiangkou Industrial Agglomeration Zone, Wenzhou City, Zhejiang Province Patentee after: Chentong Intelligent Electrical Co.,Ltd. Country or region after: China Address before: 443002 No. 8, University Road, Xiling District, Yichang, Hubei Patentee before: CHINA THREE GORGES University Country or region before: China |