CN104319498A - Lightning preventing and resistance reducing method for substation grounding resistance - Google Patents
Lightning preventing and resistance reducing method for substation grounding resistance Download PDFInfo
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- CN104319498A CN104319498A CN201410656159.9A CN201410656159A CN104319498A CN 104319498 A CN104319498 A CN 104319498A CN 201410656159 A CN201410656159 A CN 201410656159A CN 104319498 A CN104319498 A CN 104319498A
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- resistance
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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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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
A lightning preventing and resistance reducing method for substation grounding resistance is characterized by including the following steps that first, the area of a grounding network is increased, wherein the grounding network composed of a plurality of horizontal grounding bodies is adopted; second, the ground resistivity is manually improved, wherein the grounding resistance is reduced by manually improving the ground resistivity; third, the grounding bodies are buried deep, wherein in the position where the ground resistivity is decreased faster along with increase of the depth of a stratum, the grounding resistance is reduced by burying the grounding bodies deep; fourth, the grounding network is externally introduced, wherein soil with a water source or a low resistance coefficient is utilized for manufacturing grounding electrodes or laying the underwater grounding network; fifth, grounding materials good in electric conduction are adopted, wherein the resistance of the grounding bodies is reduced, and current scattering is enhanced; sixth, new grounding materials are adopted, wherein a resistance reducing module and anti-corrosion ion grounding bodies are adopted for reducing the grounding resistance. Through the method, the grounding resistance can be effective reduced, and the running safety of a circuit is guaranteed particularly in thunderstorm weather.
Description
Technical field
The design relates to substation grounding resistance lightning protection methods to reduce resistance, belongs to technical field of electric power.
Background technology
Lightning protection earthing system guarantees that electric equipment normally works and the important measures of security protection.Along with the continuous lifting of electric power system capacity, enter ground short circuit electric current increasing, require that the earth resistance of system is also thereupon more and more less.Especially at thunderstorm weather, ground short circuit electric current is entered larger, also higher to the requirement of earth resistance.Grounding resistance is the important indicator whether measurement System in Substation meets safety requirements, has important function to the protection person and device security.
Summary of the invention
According to above-mentioned requirements, the object of the design is to provide substation grounding resistance lightning protection methods to reduce resistance, effectively to reduce earth resistance, ensures that circuit runs especially in the safety of thunderstorm weather circuit.
For achieving the above object, the design is realized by following technological means:
Substation grounding resistance lightning protection methods to reduce resistance, is characterized in that: comprise following methods:
A. ground network area is increased: the ground network adopting many horizontal grounding objects compositions;
B. improve grounding resistance ratio by manual work: the method adopting improve grounding resistance ratio by manual work, reduces earth resistance;
C. buried earth electrode: earth resistivity increases with depth of stratum and reduces local faster, adopts the method for buried earth electrode to reduce earth resistance;
D. ground network is drawn outward: utilize water source or the low soil of resistance coefficient, make earth electrode or lay ground network under water;
F. adopt the earthing material that conduction is good: the resistance reducing earth electrode itself, strengthen diffusing;
G. novel grounded material is adopted: adopt and fall resistance module, anticorrosive ion earth unit reduction earth resistance.
Further:
Described substation grounding resistance lightning protection methods to reduce resistance, is characterized in that: described improve grounding resistance ratio by manual work method, for add in earth electrode surrounding soil salt, cinder, charcoal end, ashes,
Charred ashes, to improve the conductance of soil.
Described substation grounding resistance lightning protection methods to reduce resistance, is characterized in that: described improve grounding resistance ratio by manual work method, for adopting the method for soil removal and replacement, utilizes clay, peat, black earth or dauk to replace the soil of original high resistivity.
Described substation grounding resistance lightning protection methods to reduce resistance, is characterized in that: described improve grounding resistance ratio by manual work method, for adopting electrically conductive concrete method: in cement, mix carbon fibre be used as earth electrode use.
Described substation grounding resistance lightning protection methods to reduce resistance, is characterized in that: described improve grounding resistance ratio by manual work method, for adopting the chemical treatment method of resistance reducing agent: with carbon dust and quick lime etc. as the resistance depressant prescription of primary raw material, backfill original soil property.
Described substation grounding resistance lightning protection methods to reduce resistance, is characterized in that: the described outer buried depth drawing the outer lead of ground network method is greater than or equal to 0.8 meter.
Described substation grounding resistance lightning protection methods to reduce resistance, is characterized in that: the described earthing material method adopting conduction good, the material of employing is copper material or copper covered steel material.
Described substation grounding resistance lightning protection methods to reduce resistance, is characterized in that: the method for described employing soil removal and replacement, the scope of displacement is in the scope of around earth electrode 1 ~ 2 meter and side near the ground is greater than or equal in long 1/3 region of earth electrode.
The invention has the beneficial effects as follows: the present invention effectively can reduce earth resistance, ensure that circuit runs especially in the safety of thunderstorm weather circuit.
Accompanying drawing explanation
Embodiment
Substation grounding resistance lightning protection methods to reduce resistance, is characterized in that: comprise following methods:
A. ground network area is increased: the ground network adopting many horizontal grounding objects compositions;
Ground network be made up of many horizontal grounding objects can regard one piece of isolated flat board approx as, when platen area increase be twice time, earth resistance reduces about 25%.
B. improve grounding resistance ratio by manual work: the method adopting improve grounding resistance ratio by manual work, reduces earth resistance;
C. buried earth electrode: earth resistivity increases with depth of stratum and reduces local faster, adopts the method for buried earth electrode to reduce earth resistance;
D. ground network is drawn outward: utilize water source or the low soil of resistance coefficient, make earth electrode or lay ground network under water;
F. adopt the earthing material that conduction is good: the resistance reducing earth electrode itself, strengthen diffusing;
G. novel grounded material is adopted: adopt and fall resistance module, anticorrosive ion earth unit reduction earth resistance.
Further:
Described substation grounding resistance lightning protection methods to reduce resistance, it is characterized in that: described improve grounding resistance ratio by manual work method, for adopting the method for soil removal and replacement, in earth electrode surrounding soil, add salt, cinder, charcoal end, ashes, charred ashes, to improve the conductance of soil.
Described substation grounding resistance lightning protection methods to reduce resistance, is characterized in that: described improve grounding resistance ratio by manual work method, is the soil utilizing clay, peat, black earth or dauk to replace original high resistivity.
Described substation grounding resistance lightning protection methods to reduce resistance, is characterized in that: described improve grounding resistance ratio by manual work method, for adopting electrically conductive concrete method: in cement, mix carbon fibre be used as earth electrode use.
In 1 cubic metre of rice cement, mix the carbon fibre of about double centner, make the earth electrode of hemispherical (diameter 1 meter).
Described substation grounding resistance lightning protection methods to reduce resistance, is characterized in that: described improve grounding resistance ratio by manual work method, for adopting the chemical treatment method of resistance reducing agent: with carbon dust and quick lime etc. as the resistance depressant prescription of primary raw material, backfill original soil property.
With the resistance depressant prescription as primary raw material such as carbon dust and quick lime, because not containing dielectric, therefore can use for a long time in soil, also can not run off because of underground water, backfill so replace original soil property by resistance reducing agent, obtain for a long time not only nuisanceless and but also stable low earth resistance.
Described substation grounding resistance lightning protection methods to reduce resistance, is characterized in that: the described outer buried depth drawing the outer lead of ground network method is greater than or equal to 0.8 meter.
Described substation grounding resistance lightning protection methods to reduce resistance, is characterized in that: the described earthing material method adopting conduction good, the material of employing is copper material or copper covered steel material.
Described substation grounding resistance lightning protection methods to reduce resistance, is characterized in that: the method for described employing soil removal and replacement, the scope of displacement is in the scope of around earth electrode 1 ~ 2 meter and side near the ground is greater than or equal in long 1/3 region of earth electrode.
More than show and describe the general principle of the design, principal character and advantage.The technical staff of the industry should understand; the design is not restricted to the described embodiments; the principle that the design is just described described in above-described embodiment and specification; under the prerequisite not departing from the design's spirit and scope; the design also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the design.The claimed scope of the design is defined by appending claims and equivalent thereof.
Claims (8)
1. substation grounding resistance lightning protection methods to reduce resistance, is characterized in that: comprise following methods:
A. ground network area is increased: the ground network adopting many horizontal grounding objects compositions;
B. improve grounding resistance ratio by manual work: the method adopting improve grounding resistance ratio by manual work, reduces earth resistance;
C. buried earth electrode: earth resistivity increases with depth of stratum and reduces local faster, adopts the method for buried earth electrode to reduce earth resistance;
D. ground network is drawn outward: utilize water source or the low soil of resistance coefficient, make earth electrode or lay ground network under water;
F. adopt the earthing material that conduction is good: the resistance reducing earth electrode itself, strengthen diffusing;
G. novel grounded material is adopted: adopt and fall resistance module, anticorrosive ion earth unit reduction earth resistance.
2. substation grounding resistance lightning protection methods to reduce resistance as claimed in claim 1, is characterized in that: described improve grounding resistance ratio by manual work method, for add in earth electrode surrounding soil salt, cinder, charcoal end, ashes,
Charred ashes, to improve the conductance of soil.
3. substation grounding resistance lightning protection methods to reduce resistance as claimed in claim 1, it is characterized in that: described improve grounding resistance ratio by manual work method, for adopting the method for soil removal and replacement, clay, peat, black earth or dauk is utilized to replace the soil of original high resistivity.
4. substation grounding resistance lightning protection methods to reduce resistance as claimed in claim 1, is characterized in that: described improve grounding resistance ratio by manual work method, for adopting electrically conductive concrete method: in cement, mix carbon fibre be used as earth electrode use.
5. substation grounding resistance lightning protection methods to reduce resistance as claimed in claim 1, it is characterized in that: described improve grounding resistance ratio by manual work method, for adopting the chemical treatment method of resistance reducing agent: with carbon dust and quick lime etc. as the resistance depressant prescription of primary raw material, backfill original soil property.
6. substation grounding resistance lightning protection methods to reduce resistance as claimed in claim 1, is characterized in that: the described outer buried depth drawing the outer lead of ground network method is greater than or equal to 0.8 meter.
7. substation grounding resistance lightning protection methods to reduce resistance as claimed in claim 1, is characterized in that: the described earthing material method adopting conduction good, the material of employing is copper material or copper covered steel material.
8. substation grounding resistance lightning protection methods to reduce resistance as claimed in claim 3, is characterized in that: the method for described employing soil removal and replacement, the scope of displacement is in the scope of around earth electrode 1 ~ 2 meter and side near the ground is greater than or equal in long 1/3 region of earth electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410656159.9A CN104319498A (en) | 2014-11-18 | 2014-11-18 | Lightning preventing and resistance reducing method for substation grounding resistance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410656159.9A CN104319498A (en) | 2014-11-18 | 2014-11-18 | Lightning preventing and resistance reducing method for substation grounding resistance |
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| CN104319498A true CN104319498A (en) | 2015-01-28 |
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| CN201410656159.9A Pending CN104319498A (en) | 2014-11-18 | 2014-11-18 | Lightning preventing and resistance reducing method for substation grounding resistance |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104716445A (en) * | 2015-03-30 | 2015-06-17 | 余姚市电力设备修造厂 | Grounding electrode insulation shielding structure |
| CN104901030A (en) * | 2015-06-09 | 2015-09-09 | 河北省电力勘测设计研究院 | Construction method of resistance reduction and grounding device of transformer station |
| CN109361080A (en) * | 2018-10-08 | 2019-02-19 | 湖北捷地安电气有限公司 | Resistance method efficiently drops in a kind of substation |
| CN112147463A (en) * | 2020-09-25 | 2020-12-29 | 云南电网有限责任公司红河供电局 | Method and device for reducing grounding impedance of transformer substation grounding grid by additionally arranging capacitor module |
| CN114824847A (en) * | 2022-05-19 | 2022-07-29 | 徐健 | Earthing pole and grounding grid |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1805218A (en) * | 2005-01-13 | 2006-07-19 | 李新利 | Quick-mounted earthing pole containing resistance-reducing agent |
| CN101752684A (en) * | 2010-01-28 | 2010-06-23 | 高政 | Grounding electrode of anti-corrosion and adjustable grounding resistor |
-
2014
- 2014-11-18 CN CN201410656159.9A patent/CN104319498A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1805218A (en) * | 2005-01-13 | 2006-07-19 | 李新利 | Quick-mounted earthing pole containing resistance-reducing agent |
| CN101752684A (en) * | 2010-01-28 | 2010-06-23 | 高政 | Grounding electrode of anti-corrosion and adjustable grounding resistor |
Non-Patent Citations (1)
| Title |
|---|
| 迟春娟，迟连国: "高土壤电阻率地区变电站接地电阻降阻措施探讨", 《新疆电力技术》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104716445A (en) * | 2015-03-30 | 2015-06-17 | 余姚市电力设备修造厂 | Grounding electrode insulation shielding structure |
| CN104716445B (en) * | 2015-03-30 | 2016-12-07 | 余姚市电力设备修造厂 | Grounding electrode insulation screen structure |
| CN104901030A (en) * | 2015-06-09 | 2015-09-09 | 河北省电力勘测设计研究院 | Construction method of resistance reduction and grounding device of transformer station |
| CN104901030B (en) * | 2015-06-09 | 2017-12-08 | 河北省电力勘测设计研究院 | A kind of transformer station's electric resistance reducing grounding device construction method |
| CN109361080A (en) * | 2018-10-08 | 2019-02-19 | 湖北捷地安电气有限公司 | Resistance method efficiently drops in a kind of substation |
| CN112147463A (en) * | 2020-09-25 | 2020-12-29 | 云南电网有限责任公司红河供电局 | Method and device for reducing grounding impedance of transformer substation grounding grid by additionally arranging capacitor module |
| CN112147463B (en) * | 2020-09-25 | 2022-11-04 | 云南电网有限责任公司红河供电局 | Method and device for reducing grounding impedance of transformer substation grounding grid by additionally arranging capacitor module |
| CN114824847A (en) * | 2022-05-19 | 2022-07-29 | 徐健 | Earthing pole and grounding grid |
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Application publication date: 20150128 |