CN104409873A - Electric power system grounding electrode and manufacturing use method thereof - Google Patents
Electric power system grounding electrode and manufacturing use method thereof Download PDFInfo
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- CN104409873A CN104409873A CN201410609948.7A CN201410609948A CN104409873A CN 104409873 A CN104409873 A CN 104409873A CN 201410609948 A CN201410609948 A CN 201410609948A CN 104409873 A CN104409873 A CN 104409873A
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- conductive material
- organic conductive
- electric power
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- grounding electrode
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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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- Manufacturing Of Electrical Connectors (AREA)
Abstract
The invention relates to an electric power system grounding electrode. The electric power system grounding electrode comprises a tube body which takes a EP rubber as a base body and is prepared by composite organic conductive materials acquired by mixing conductive graphite at a doping volume ratio volume ratio of 15-45%, the tube body is internally filled with inorganic salt compound ion filling materials, two ends of the tube body are plugged by end plugs prepared by organic conductive materials, the wall of the tube body is uniformly distributed with small holes, the tube body is further provided with a leading-out wire, the peripheral of the tube body has present backfill materials separating from the soil. The invention further relates to the manufacturing use method of the grounding electrode. The electric power system grounding electrode manufactured by employing the manufacturing use method has advantages of low resistivity, anti-corrosion performance, anti-aging performance and low cost and can further improve the application scope in various types of soils.
Description
Technical field
The present invention relates to a kind of electric power system earth electrode, especially relate to a kind of organic conductive material electric power system ion grounding electrode.The invention still further relates to the making using method of described earth electrode.
Background technology
Ground connection refers to that certain point of electric power system or the conduction between protected electric equipment with the earth are connected, for stable potential, for electrostatic charge, fault current, lightning current or other transient currents etc. provide leakage path.The system that grounding system in electric power system in power station, transformer station is made up of jointly earthing device, electric equipment and cable grounding, overhead ground wire, electrical secondary system ground connection.Particularly for the power station in electric power system and transformer station, grounding system and earthing device thereof run for guarantee power system stability, and the personal safety of protection power equipment safety, operating maintenance personnel plays vital effect.
Earth resistance is the important indicator weighing earthing device performance, and when earth resistance can not meet the requirement that standard specify, needs are taked to fall resistance measure.Ground connection is fallen in resistance engineering and be there are two distinct issues for many years: the first, and existing ground connection is fallen some that cannot solve in engineering of resistance technology and fallen and thwart topic, and application has the grounding body better falling resistance effect becomes the new approaches of dealing with problems; The second, for guaranteeing the Long Service Life of ground network, reduce the maintenance work of ground network, need the corrosion resistant earthing material of application, thus, ion grounding electrode arises at the historic moment.
The ion grounding electrode appearance of prior art mostly is copper, inner packing material contains inorganic salts compound, inorganic salts compound is by the aperture on copper pipe top, absorb the moisture in air, pass through deliquescent effect, inorganic salts compound dissolves, ionization becomes the plasma diffusing W,Mo that can conduct electricity in soil, and utilizes the osmosis of ion, reduces the soil resistivity of near zone.Fig. 1 is the ion grounding rod schematic diagram of prior art, and earth electrode outside also has supporting backfill, and main purpose assists to fall resistance, reduction contact resistance, corrosion protection.Because ion grounding electrode can reduce the soil resistivity of near zone, therefore, it is possible to reduce its earth resistance to soil by iontophoretic injection.Meanwhile, because ion grounding electrode uses copper to make tubing, therefore corrosion resistance is stronger.
But, because copper material is short and expensive, cause ion grounding electrode price very high, fall resistance engineering cost and significantly rise, be difficult to a large amount of use.And use cheaply a little metal materials, such as iron and steel, due to the corrosiveness of ion, corresponding ion grounding electrode by the disappearance that be corroded very soon, thus loses the effect of falling resistance.If use the good high grade stainless steel of corrosive nature, its cost and copper close.Simultaneously, when using metal material as earth electrode, because common metal material can not keep higher corrosion resistance in the soil of all character, even if copper material, its corrosion resistance in alkaline soils is also poor, and therefore the applicability of metal material ion grounding electrode in different soils is very limited.
Summary of the invention
First technical problem to be solved by this invention, is just to provide a kind of electric power system earth electrode.
Second technical problem to be solved by this invention, is just to provide the manufacture method of described electric power system earth electrode.
The electric power system earth electrode adopting this method to make, possesses low-resistivity, corrosion-resistant, aging-resistant characteristic simultaneously, and with low cost, can also be increased in the scope of application in various soil.
Solve above-mentioned first technical problem, the technical solution used in the present invention is as follows:
A kind of electric power system earth electrode, it is characterized in that: the body 1 made of the mixing compound organic conductive material obtained of electrically conductive graphite that to comprise with ethylene-propylene rubber be matrix, doping volume ratio is 15% ~ 45%, uniform aperture 4 in end plug 3 shutoff and wall made from organic conductive material in inorganic salts compound ions filler 2, two ends is filled in described body, body is also provided with lead-out wire 5, is with and the existing backfill at soil interval outside body.
Described outer tube diameter 50 to 55 millimeters, wall thickness 5 millimeters, on tube body wall, uniform aperture is: along the hole of body axially spaced-apart 0.5 to 0.6 meter, body circumferentially uniform 3 diameters 4.5 millimeters, the small pitch at body two ends is from end plug 50 millimeters, the copper stranded conductor that described lead-out wire is 0.5 meter long, sectional area is 100 square millimeters, copper stranded conductor stretches in body or is electrically connected with body.
Described tube length is 1.5 meters, 3 meters or by customization, the length of end plug is 35 millimeters.
Solve above-mentioned second technical problem, the technical solution used in the present invention is as follows:
A making using method for described electric power system earth electrode, is characterized in that comprising the following steps:
S1, prepare organic conductive material: select corrosion-resistant, resistance to hydro-thermal, ageing-resistant ethylene-propylene rubber as matrix, adding volume ratio is wherein that the electrically conductive graphite of 15% ~ 45% (being preferably 20%) improves organic conductivity, carry out mixing 30 ~ 60 (being preferably 30 minutes) 200 DEG C ~ 250 DEG C (being preferably 200 DEG C) after completing doping, obtain outer conductive organic matter material for subsequent use;
S2, makes organic conductive material body: by conductive organic matter under 200 DEG C of high temperature drying environment, make external diameter 50mm ~ 55mm, the tubulose of wall thickness 5mm, at room temperature cools, and namely obtains organic conductive material body;
S3, make organic conductive material ion grounding electrode: use organic conductive material body, insert the interior filler of traditional copper ion grounding electrode, the stopper that organic conductive material body two ends use same organic conductive material to make beyond the Great Wall, and along pipe interval 0.5 ~ 0.6m equidistant placement around aperture, aperture 4.5mm, often encloses 3 holes; Then using copper cable and organic conductive material body compact siro spinning technology as lead-in wire;
S4, seals up (open during installation, otherwise interior filler deliquescence) with sealant tape again and namely makes organic conductive material ion grounding electrode for subsequent use by upper for the pipe aperture around layout;
S5, during installation body outer with fill the outer filler identical with the copper ion grounding electrode of tradition between soil.
The object of the invention is to develop the organic conductive material of a kind of alternative copper material as ion grounding electrode shell, and make ion grounding electrode with it, utilize conductiving doping to make high-performance organic substance possess low-resistivity, corrosion-resistant, aging-resistant characteristic simultaneously, the Novel ion earth electrode integral ground resistance level not only using it to manufacture meets the requirement of earthing device, and the corrosion resistance of entirety has great raising; Select the ethylene-propylene rubber of high physical property as organic substance matrix, not only there is good corrosion-resistant, resistance to hydro-thermal, ageing-resistant performance, and its higher elasticity and ductility make composite material be convenient to processing; Meanwhile, this material is lightweight compared with copper, price is low, possesses wide application prospect, and what provide high-performance, low cost for grounding system each in electric power system and earthing device falls resistance Measure choice.
The present invention has the following advantages:
1, adopt ethylene-propylene rubber as ion grounding electrode body, conductive doped graphite, ensure that its excellent conductivity, also outer conductive organic matter is made to have the excellent physical characteristic (as corrosion-resistant, resistance to hydro-thermal, ageing-resistant etc.) of ethylene-propylene rubber, thus improve the tolerance of compound earthing material to poor soil environment, ensure that the excellent properties of compound earthing material.
2, the present invention has rotproofness by force, and be not vulnerable to the impact such as moisture, pH value, useful life is extended greatly, and is applicable to dissimilar soil environment, has broad application prospects.
3, the more traditional copper ion grounding rod low price of the present invention, is only 1/3rd of its price.
4, the present invention is compared with other ion grounding electrodes, owing to adopting ethylene-propylene rubber as body, makes organic substance possess high resiliency and high ductibility, and lightweight, is easy to packaging, transport and installs.
Accompanying drawing explanation
Fig. 1 is the principle of the ion grounding rod of prior art;
Fig. 2 is organic conductive material ion grounding electrode schematic diagram of the present invention.
In figure: 1-body, 2-filler, 3-end plug, 4-aperture, 5-lead-out wire.
Embodiment
Fig. 1 is the ion grounding electrode of prior art, Figure 2 shows that electric power system earth electrode example of the present invention, the body 1 made of the mixing compound organic conductive material obtained of electrically conductive graphite that to comprise with ethylene-propylene rubber be matrix, doping volume ratio is 15% ~ 45%, inorganic salts compound ions filler 2 is filled in body, body two ends are plugged with the end plug 3 that organic conductive material is made, uniform aperture 4 on tube body wall, body is provided with lead-out wire 5; Outer tube diameter 50 to 55 millimeters, wall thickness 5 millimeters, the uniform aperture of tube body wall is: along the hole of pipe axially spaced-apart 0.5 to 0.6 meter, body circumferentially uniform 3 diameters 4.5 millimeters, the small pitch at two ends is from end plug 50 millimeters, the copper stranded conductor that lead-out wire is 0.5 meter long, sectional area is 100 square millimeters, copper stranded conductor stretches in body or is electrically connected with body; Tube length is 1.5 meters, 3 meters or customization, and the length of end plug is 35 millimeters.During use pipe outer with fill the outer filler identical with the copper ion grounding electrode of tradition between soil.
Below introduce the preparation process of the organic conductive material ion grounding electrode that the present invention proposes:
First, organic conductive material is prepared.Select corrosion-resistant, resistance to hydro-thermal, ageing-resistant ethylene-propylene rubber as matrix, wherein add volume ratio be 15% ~ 45% graphite improve organic conductivity, carry out mixing 30 ~ 60 minutes at 200 DEG C ~ 250 DEG C after completing doping, obtain outer conductive organic matter material for subsequent use.To determine according to the requirement of the resistivity for outer organic substance material when selecting the volume ratio of graphite.Resistivity for earth electrode requires far below the soil resistivity (a few Ω m ~ hundred Ω m, even higher) in ground connection environment, and generally speaking, the resistivity of earth electrode should control at 0.1 below Ω m.Because the density of ethylene-propylene rubber is lower, fillibility is higher, the lower organic physical characteristic of high filling is more little than changing with matrix phase.
Then organic conductive material body is made.By conductive organic matter under 200 DEG C of high temperature drying environment, make external diameter 50mm ~ 55mm, the tubulose of wall thickness 5mm, at room temperature cools, and namely obtains organic conductive material body.
To in an embodiment of the present invention, select graphite volume ratio 20%, pipe diameter 5cm, thickness 5mm, the resistivity obtaining compound earthing material is less than 0.1 Ω m, and experimental verification has good corrosion-resistant, resistance to hydro-thermal, the physical property such as ageing-resistant.
Finally make organic conductive material ion grounding electrode.Use organic conductive material body, insert the interior filler of traditional copper ion grounding electrode, organic conductive material body two ends use the stopper made of same organic conductive material beyond the Great Wall, and along pipe interval 0.5 ~ 0.6m equidistant placement around aperture, aperture 4.5mm, often encloses 3 holes.Then using copper cable and organic conductive material body compact siro spinning technology as lead-in wire.Finally seal up on pipe around the aperture arranged with sealant tape, open again during installation, otherwise interior filler deliquescence.Namely organic conductive material ion grounding rod for subsequent use is made;
During use pipe outer with fill the outer filler identical with the copper ion grounding electrode of tradition between soil.
Claims (5)
1. an electric power system earth electrode, it is characterized in that: the body (1) made of the mixing compound organic conductive material obtained of electrically conductive graphite that to comprise with ethylene-propylene rubber be matrix, doping volume ratio is 15% ~ 45%, fill inorganic salts compound ions filler (2) in described body, uniform aperture (4) on end plug (3) shutoff that two ends are made with organic conductive material and wall, body is also provided with the lead-out wire (5) stretching in body or be electrically connected with body, is with and the backfill at soil interval outside body.
2. electric power system earth electrode according to claim 1, it is characterized in that: described outer tube diameter 50 to 55 millimeters, wall thickness 5 millimeters, on tube body wall, uniform aperture is: along the hole of body axially spaced-apart 0.5 to 0.6 meter, body circumferentially uniform 3 diameters 4.5 millimeters, the small pitch at body two ends from end plug 50 millimeters, the copper stranded conductor that described lead-out wire is 0.5 meter long, sectional area is 100 square millimeters.
3. electric power system earth electrode according to claim 1, is characterized in that: described tube length is 1.5 meters, 3 meters or by customization, the length of end plug is 35 millimeters.
4. a making using method for the electric power system earth electrode as described in claim 1-3 any one, is characterized in that comprising the following steps:
S1, prepare organic conductive material: select corrosion-resistant, resistance to hydro-thermal, ageing-resistant ethylene-propylene rubber as matrix, adding volume ratio is wherein that the electrically conductive graphite of 15% ~ 45% (being preferably 20%) improves organic conductivity, carry out mixing 30 ~ 60 minutes at 200 DEG C ~ 250 DEG C after completing doping, obtain outer conductive organic matter material for subsequent use;
S2, makes organic conductive material body: by conductive organic matter under 200 DEG C of high temperature drying environment, make external diameter 50mm ~ 55mm, the tubulose of wall thickness 5mm, at room temperature cools, and namely obtains organic conductive material body;
S3, make organic conductive material ion grounding electrode: use organic conductive material body, insert the interior filler of traditional copper ion grounding electrode, the stopper that organic conductive material body two ends use same organic conductive material to make beyond the Great Wall, and along pipe interval 0.5 ~ 0.6m equidistant placement around aperture, aperture 4.5mm, often encloses 3 holes; Then using copper cable and organic conductive material body compact siro spinning technology as lead-in wire;
S4, namely makes organic conductive material ion grounding electrode for subsequent use with sealant tape by pipe is sealed up around the aperture arranged;
S5, during installation body outer with fill the outer filler identical with the copper ion grounding electrode of tradition between soil.
5. the making using method of electric power system earth electrode according to claim 4, is characterized in that: it is 20% that the electrically conductive graphite in described step S1 adds volume ratio, carries out mixing 30 minutes after completing doping at 200 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410609948.7A CN104409873B (en) | 2014-10-31 | 2014-10-31 | Power system earthing pole and making using method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410609948.7A CN104409873B (en) | 2014-10-31 | 2014-10-31 | Power system earthing pole and making using method thereof |
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| CN104409873A true CN104409873A (en) | 2015-03-11 |
| CN104409873B CN104409873B (en) | 2016-08-24 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007049834A1 (en) * | 2005-10-25 | 2007-05-03 | Kui-Yeun Kim | The constitution and method making of the stainless covered wire |
| CN102983419A (en) * | 2011-09-07 | 2013-03-20 | 崔骥 | Grounding device and grounding method |
| CN103219597A (en) * | 2013-04-07 | 2013-07-24 | 国家电网公司 | Grounding wire device |
| CN203481407U (en) * | 2013-08-26 | 2014-03-12 | 于钦贤 | Composite graphite grounding conductor |
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2014
- 2014-10-31 CN CN201410609948.7A patent/CN104409873B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007049834A1 (en) * | 2005-10-25 | 2007-05-03 | Kui-Yeun Kim | The constitution and method making of the stainless covered wire |
| CN102983419A (en) * | 2011-09-07 | 2013-03-20 | 崔骥 | Grounding device and grounding method |
| CN103219597A (en) * | 2013-04-07 | 2013-07-24 | 国家电网公司 | Grounding wire device |
| CN203481407U (en) * | 2013-08-26 | 2014-03-12 | 于钦贤 | Composite graphite grounding conductor |
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| CN104409873B (en) | 2016-08-24 |
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Effective date of registration: 20200806 Address after: 516003 No. 19, Huizhou Avenue, Huicheng District, Guangdong, Huizhou Co-patentee after: Electric Power Research Institute of Guangdong Power Grid Co.,Ltd. Patentee after: HUIZHOU POWER SUPPLY BUREAU OF GUANGDONG POWER GRID Co.,Ltd. Address before: 516000 No. 19, Huizhou Avenue, Huicheng District, Guangdong, Huizhou Co-patentee before: Electric Power Research Institute of Guangdong Power Grid Co.,Ltd. Patentee before: HUIZHOU POWER SUPPLY BUREAU OF GUANGDONG POWER GRID Co.,Ltd. Co-patentee before: TSINGHUA University |