CN105429034A - Grounding device of transformer substation containing inlet and outlet cables and mounting method thereof - Google Patents
Grounding device of transformer substation containing inlet and outlet cables and mounting method thereof Download PDFInfo
- Publication number
- CN105429034A CN105429034A CN201510897879.9A CN201510897879A CN105429034A CN 105429034 A CN105429034 A CN 105429034A CN 201510897879 A CN201510897879 A CN 201510897879A CN 105429034 A CN105429034 A CN 105429034A
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- indoor
- steel
- flat steel
- grounding
- cable
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B5/00—Non-enclosed substations; Substations with enclosed and non-enclosed equipment
- H02B5/01—Earthing arrangements, e.g. earthing rods
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B3/00—Apparatus specially adapted for the manufacture, assembly, or maintenance of boards or switchgear
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Suspension Of Electric Lines Or Cables (AREA)
Abstract
The invention provides a grounding device of a transformer substation containing inlet and outlet cables. The grounding device comprises cable trench support flat steel, indoor leading flat steel, an indoor grounding main line and overlap region tin coatings, wherein the cable trench support flat steel penetrates through a cable trench support stand column, the indoor leading flat steel is in locked connection with the cable trench support flat steel through a first screw, the indoor grounding main line is in locked connection with the indoor leading flat steel through a first screw, and the overlap region tin coatings are arranged between the cable trench support flat steel and the indoor leading flat steel and between the indoor leading flat steel and the indoor grounding main line. The invention discloses the grounding device of the transformer substation containing inlet and outlet cables and a mounting method of the grounding device. According to the invention, since flat steel or a copper stranded wire is used for connecting the grounding device in a cable structure with a transformer substation grounding network, the grounding device in the cable structure can be used for shunting the transformer substation grounding network, thereby reducing the total ground resistance, further reducing the earth current of the transformer substation grounding network and lowering the contact voltage and step voltage of the transformer substation.
Description
Technical field
The present invention relates to field of electrical equipment, be specifically related to a kind of containing cable incoming-outgoing wire substation grounding device and installation method.
Background technology
To the transformer station containing cable incoming-outgoing wire, if the soil resistivity of substation location and surrounding area is higher, common grounding design cannot meet specification (GB50065-2011 " the grounding design specification of alternating-current electric device ", when requiring down together), be typically employed in station to increase and lay intensive latticed ground network to increase the shunting of short circuit current, reduce earth resistance, if in specific region step voltage or touch voltage undesirable, then may also need to lay blinding to improve insulation, ensure personal safety, these two kinds of methods all can increase the cost of engineering construction, and proved is unsatisfactory.
Summary of the invention
Because the above-mentioned defect of prior art, the invention provides that a kind of structure is simple, fail safe is high, economize on resources and cost containing cable incoming-outgoing wire substation grounding device.
For achieving the above object, the invention provides a kind of containing cable incoming-outgoing wire substation grounding device, comprise the cable ditch support grounding flat steel running through cable ditch support column, and connect band steel with indoor the drawing that cable ditch support grounding flat steel is connected by the first screw lock, and draw with indoor the indoor ground connection main line connecing band steel and be connected by the first screw lock, and be arranged on cable ditch support grounding flat steel and indoor drawing to connect between band steel, indoorly draw the overlapping regions tin coating connect between the indoor ground connection main line of band steel.
Further, described indoor draw to connect between band steel and indoor ground connection main line be connected by indoor copper stranded conductor.
Further, the described cable incoming-outgoing wire substation grounding device that contains comprises the indoor ground connection main line of comb, and grounding flat steel in the comb to be connected by the first screw lock with the indoor ground connection main line of comb, and the comb copper stranded conductor to be fixedly connected with by the second screw with grounding flat steel in comb, and be fixed on the heat release joint made by flame welding of comb copper stranded conductor, and be fixed on the earth electrode of heat release joint made by flame welding one end.
Further, the distance of the length A of described overlapping regions tin coating is more than or equal to the distance of two width B.
Further, described first screw is 12*16 type screw.
Further, described second screw is M6*16 type screw.
Another technical problem that the present invention will solve is to provide a kind of installation method containing cable incoming-outgoing wire substation grounding device simple to operate, easy for installation.
For solving the problems of the technologies described above, the present invention adopts following technical scheme: comprise the following steps: 1), cable ditch support grounding flat steel runs through cable ditch support column, and indoor drawing connects band steel and run through transformer station's exterior wall; 2), then cable ditch support grounding flat steel and indoor drawing connect band steel 4 the first bolts and crimp; 3), then indoors draw and connect band steel side in kind ground connection main line in junction chamber; 4), then connect band steel junction at cable ditch support grounding flat steel and indoor drawing, and indoor drawing connects band steel and indoor ground connection main line junction arranges overlapping regions tin coating; 5), for round steel, steel pipe etc. cannot use bolted steel earthing material, should adopt the mode of overlap joint welding, ensure to be electrically connected reliably, overlapping regions tin coating contact-making surface length A is not less than 2 times of width smaller width B.
Beneficial effect of the present invention:
The present invention is a kind of containing cable incoming-outgoing wire substation grounding device and installation method, the present invention adopts band steel or copper stranded conductor the earthing device in cable structures and grounding net of transformer substation to be coupled together, the earthing device in cable structures is utilized to shunt grounding net of transformer substation by this kind of mode, reduce total earth resistance, thus reduce the earth current of grounding net of transformer substation, reduce the touch voltage and step voltage of transformer station.
Be described further below with reference to the technique effect of accompanying drawing to design of the present invention, concrete structure and generation, to understand object of the present invention, characteristic sum effect fully.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention one;
Fig. 2 is the structural representation of the embodiment of the present invention two;
Fig. 3 is the structural representation of the embodiment of the present invention three.
Embodiment
Embodiment one
In the present embodiment, with reference to shown in Fig. 1, a kind of containing cable incoming-outgoing wire substation grounding device, comprise the cable ditch support grounding flat steel 2 running through cable ditch support column 1, and lock by the first screw 4 indoor the drawing be connected with cable ditch support grounding flat steel 2 and connect band steel 5, and connect band steel 5 and locked with indoor drawing the indoor ground connection main line 7 be connected by the first screw 4, and be arranged on cable ditch support grounding flat steel 2 and indoor drawing to connect between band steel 5, indoorly draw the overlapping regions tin coating 3 connect between the indoor ground connection main line 7 of band steel 5.
The distance of the length A of described overlapping regions tin coating 3 is more than or equal to the distance of two width B.
Described first screw 4 is 12*16 type screw.
Described second screw 9 is M6*16 type screw.
Containing the installation method of cable incoming-outgoing wire substation grounding device, should comprise the following steps: 1), cable ditch support grounding flat steel 2 runs through cable ditch support column 1, indoor drawing connects band steel 5 and runs through transformer station's exterior wall 6; 2), then cable ditch support grounding flat steel 2 and indoor drawing connect band steel 54 the first bolts 4 and crimp; 3), then indoors draw and connect band steel 5 side in kind ground connection main line 7 in junction chamber; 4), then connect band steel 5 junction in cable ditch support grounding flat steel 2 and indoor drawing, and connect band steel 5 and arrange overlapping regions tin coating 3 with indoor ground connection main line 7 junction indoor drawing; 5), for round steel, steel pipe etc. cannot use bolted steel earthing material, should adopt the mode of overlap joint welding, ensure to be electrically connected reliably, overlapping regions tin coating 3 contact-making surface length A is not less than 2 times of width smaller width B.
Embodiment two
In the present embodiment, with reference to shown in Fig. 2, be with the difference of embodiment one: described indoor draw to connect between band steel 5 and indoor ground connection main line 7 be connected by indoor copper stranded conductor 8.
Comprise the following steps: 1), cable ditch support grounding flat steel 2 runs through cable ditch support column 1, indoor drawing connects band steel 5 and runs through transformer station's exterior wall 6; 2), then cable ditch support grounding flat steel 2 and indoor drawing connect band steel 54 the first bolts 4 and crimp; 3), then indoors draw and connect band steel 5 side ground connection main line 7 in indoor copper stranded conductor 8 junction chamber, and fix with the second screw; 4), then connect band steel 5 junction in cable ditch support grounding flat steel 2 and indoor drawing, and connect band steel 5 and arrange overlapping regions tin coating 3 with indoor ground connection main line 7 junction indoor drawing; 5), for round steel, steel pipe etc. cannot use bolted steel earthing material, should adopt the mode of overlap joint welding, ensure to be electrically connected reliably, overlapping regions tin coating 3 contact-making surface length A is not less than 2 times of width smaller width B.
Embodiment three
In the present embodiment, with reference to shown in Fig. 3, be with the difference of embodiment one: the described cable incoming-outgoing wire substation grounding device that contains comprises the indoor ground connection main line 11 of comb, and to be locked grounding flat steel 13 in the comb that is connected by the first screw 4 with the indoor ground connection main line 11 of comb, and the comb copper stranded conductor 15 to be fixedly connected with by the second screw 9 with grounding flat steel in comb 13, and be fixed on the heat release joint made by flame welding 14 of comb copper stranded conductor 15, and be fixed on the earth electrode 16 of heat release joint made by flame welding 14 one end.
Comprise the following steps: 1), in comb grounding flat steel 13 runs through transformer station's exterior wall 10 and comb 12, the indoor ground connection main line 11 of comb locks grounding flat steel 13 in comb by the first screw 4, and junction arranges overlapping regions tin coating 3; 2), in comb, grounding flat steel 13 one end the second screw 9 is connected with comb copper stranded conductor 15; 3), adopt the mode of exothermic weld, the earthing material be connected is wrapped in joint completely, and the metal of connecting portion should melt completely, is connected firmly.The surface of heat release joint made by flame welding 14 should be level and smooth, should without perfoliate pore.
Connect the required condition met to have: for cable structures or transformer station, rigid material should be selected as the earthing device for connecting, as: covering steel earthing material etc. as the steel earthing material such as round steel, band steel, angle steel, steel pipe or copper rod, the flat copper of earthing device, the copper such as copper covers round steel, copper covers band steel or copper in cable trough, cable tunnel, work well, copper stranded conductor or copper should not selected to cover the flexible materials such as steel as the earthing device for connecting.For cable structures or transformer station, earthing conductor in ground network or ground connection main line should be selected as the earthing device for connecting, should not select the earthing conductor of cable or electric equipment should be as far as possible close for the earthing device be connected as the earthing device cable structures for connecting and transformer station both sides, and possess the implementation condition that bonding conductor can carry out connecting and laying, earthing device for connecting should be able to normally realize its grounding function, not destroyed or corrosion.The bonding conductor selected has: Hot-dip zinc-coated flat steel sheet, specification is determined by institute's stube cable structures or substation grounding device specification, can be connected with the steel earthing material in cable structures or substation grounding device, can be connected with the copper stranded conductor as bonding conductor, steel should do not covered with the copper in cable structures or substation grounding device or copper to carry out being connected copper stranded conductor, specification is determined by institute's stube cable structures or substation grounding device specification, can with other earthing device or bonding conductor are connected arbitrarily.When execution conditions allow, select Hot-dip zinc-coated flat steel sheet as bonding conductor as much as possible.
Of the present invention containing cable incoming-outgoing wire substation grounding device and installation method: the present invention is a kind of containing cable incoming-outgoing wire substation grounding device and installation method, the present invention adopts band steel or copper stranded conductor the earthing device in cable structures and grounding net of transformer substation to be coupled together, the earthing device in cable structures is utilized to shunt grounding net of transformer substation by this kind of mode, reduce total earth resistance, thus reduce the earth current of grounding net of transformer substation, reduce the touch voltage and step voltage of transformer station.
More than describe preferred embodiment of the present invention in detail.Should be appreciated that those of ordinary skill in the art just design according to the present invention can make many modifications and variations without the need to creative work.Therefore, all technical staff in the art, all should by the determined protection range of claims under this invention's idea on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment.
Claims (7)
1. one kind contains cable incoming-outgoing wire substation grounding device, it is characterized in that: comprise the cable ditch support grounding flat steel running through cable ditch support column, and connect band steel with indoor the drawing that cable ditch support grounding flat steel is connected by the first screw lock, and draw with indoor the indoor ground connection main line connecing band steel and be connected by the first screw lock, and be arranged on cable ditch support grounding flat steel and indoor drawing to connect between band steel, indoorly draw the overlapping regions tin coating connect between the indoor ground connection main line of band steel.
2. according to claim 1 containing cable incoming-outgoing wire substation grounding device, it is characterized in that: described indoor draw to connect between band steel and indoor ground connection main line be connected by indoor copper stranded conductor.
3. according to claim 1 containing cable incoming-outgoing wire substation grounding device, it is characterized in that: the described cable incoming-outgoing wire substation grounding device that contains comprises the indoor ground connection main line of comb, and grounding flat steel in the comb to be connected by the first screw lock with the indoor ground connection main line of comb, and the comb copper stranded conductor to be fixedly connected with by the second screw with grounding flat steel in comb, and be fixed on the heat release joint made by flame welding of comb copper stranded conductor, and be fixed on the earth electrode of heat release joint made by flame welding one end.
4. according to claim 1 containing cable incoming-outgoing wire substation grounding device, it is characterized in that: the distance of the length A of described overlapping regions tin coating is more than or equal to the distance of two width B.
5. according to claim 1 containing cable incoming-outgoing wire substation grounding device, it is characterized in that: described first screw is 12*16 type screw.
6. according to claim 1 containing cable incoming-outgoing wire substation grounding device, it is characterized in that: described second screw is M6*16 type screw.
7. the installation method containing cable incoming-outgoing wire substation grounding device as claimed in claim 1, is characterized in that, comprise the following steps:
1), cable ditch support grounding flat steel runs through cable ditch support column, and indoor drawing connects band steel and run through transformer station's exterior wall;
2), then cable ditch support grounding flat steel and indoor drawing connect band steel 4 the first bolts and crimp;
3), then indoors draw and connect band steel side in kind ground connection main line in junction chamber;
4), then connect band steel junction at cable ditch support grounding flat steel and indoor drawing, and indoor drawing connects band steel and indoor ground connection main line junction arranges overlapping regions tin coating;
5), for round steel, steel pipe etc. cannot use bolted steel earthing material, should adopt the mode of overlap joint welding, ensure to be electrically connected reliably, overlapping regions tin coating contact-making surface length A is not less than 2 times of width smaller width B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510897879.9A CN105429034B (en) | 2015-12-08 | 2015-12-08 | Grounding device of transformer substation containing inlet and outlet cables and mounting method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510897879.9A CN105429034B (en) | 2015-12-08 | 2015-12-08 | Grounding device of transformer substation containing inlet and outlet cables and mounting method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105429034A true CN105429034A (en) | 2016-03-23 |
| CN105429034B CN105429034B (en) | 2017-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510897879.9A Active CN105429034B (en) | 2015-12-08 | 2015-12-08 | Grounding device of transformer substation containing inlet and outlet cables and mounting method thereof |
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| CN (1) | CN105429034B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107331987A (en) * | 2017-08-25 | 2017-11-07 | 郑州云海信息技术有限公司 | A kind of earthing or grounding means of container data center |
| CN108075380A (en) * | 2016-11-17 | 2018-05-25 | 中国电力科学研究院 | The current conversion station ground grid design method and grounded screen of alternative direct current grounding pole |
| CN109346929A (en) * | 2018-11-26 | 2019-02-15 | 国家电网有限公司 | A kind of secondary total earth plate structure |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203351770U (en) * | 2013-06-06 | 2013-12-18 | 龙滩水电开发有限公司 | Connection structure of combined grounding grid |
-
2015
- 2015-12-08 CN CN201510897879.9A patent/CN105429034B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203351770U (en) * | 2013-06-06 | 2013-12-18 | 龙滩水电开发有限公司 | Connection structure of combined grounding grid |
Non-Patent Citations (4)
| Title |
|---|
| 丁荣凤: "变电站接地装置的设计", 《电力学报》 * |
| 刘辉: "分布不均的高土壤电阻率地区接地的综合治理", 《电力建设》 * |
| 蔡建初: "高土壤电阻率地区大中型接地网施工设计的探讨", 《气象研究与应用》 * |
| 麦杰恒: "高土壤电阻率地区变电站接地网长效降阻的实现", 《广东电力》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108075380A (en) * | 2016-11-17 | 2018-05-25 | 中国电力科学研究院 | The current conversion station ground grid design method and grounded screen of alternative direct current grounding pole |
| CN107331987A (en) * | 2017-08-25 | 2017-11-07 | 郑州云海信息技术有限公司 | A kind of earthing or grounding means of container data center |
| CN107331987B (en) * | 2017-08-25 | 2019-06-04 | 郑州云海信息技术有限公司 | A kind of earthing or grounding means of container data center |
| CN109346929A (en) * | 2018-11-26 | 2019-02-15 | 国家电网有限公司 | A kind of secondary total earth plate structure |
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| Publication number | Publication date |
|---|---|
| CN105429034B (en) | 2017-05-24 |
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