CN201639188U - Novel earthing system applied to GIS and HGIS - Google Patents
Novel earthing system applied to GIS and HGIS Download PDFInfo
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- CN201639188U CN201639188U CN2010201196596U CN201020119659U CN201639188U CN 201639188 U CN201639188 U CN 201639188U CN 2010201196596 U CN2010201196596 U CN 2010201196596U CN 201020119659 U CN201020119659 U CN 201020119659U CN 201639188 U CN201639188 U CN 201639188U
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Abstract
The utility model relates to a novel earthing system applied to a GIS and an HGIS, which comprises a GIS or HGIS power distribution equipment, a connecting lead, an earthing conductor and a ring-shaped earthing bus. One end of the connecting lead is connected with an earthing point of the GIS or HGIS power distribution equipment, while the other end thereof is connected with the earthing connector. The lower part of the GIS or HGIS power distribution equipment is provided with a concrete foundation. The periphery of the concrete foundation is provided with the ring-shaped earthing bus. The earthing conductor is embedded in the concrete foundation. One end of the earthing conductor is in welding connection with the ring-shaped earthing bus, while the other end thereof is connected with an earthing lead. When the GIS or HGIS power distribution equipment is struck by lightning to generate equipment failure or short circuit, the short circuit current can be drained to the ground by the earthing system so as to fulfill the aim of protecting the equipment and personnel safety of people.
Description
[technical field]
The utility model relates to a kind of novel grounded system, refers in particular to be applied to GIS (gas-insulating and fully-enclosed combination metal power distribution equipment) and the safe grounding system that is connected to earth mat of HGIS (the semiclosed combination metal of gas-insulated power distribution equipment).
[background technology]
Along with the sustainable growth of economy and the high speed development of power industry, a large amount of power plant engineerings and substation project hot work in progress are also gone into operation successively.High voltage distribution installation is as requisite large sized complete sets of equipment in the power engineering project, its form can be divided into conventional open type equipment (AIS, hereinafter to be referred as AIS), gas-insulating and fully-enclosed combination metal power distribution equipment (GIS, hereinafter to be referred as GIS) and the semiclosed combination metal of gas-insulated power distribution equipment (HGIS is hereinafter to be referred as HGIS).Wherein GIS and HGIS are few, non-maintaining because of its floor space, the outstanding advantage that security reliability is high and more and more obtain the favor of power industry, and begin to be widely used in each large-scale power engineering project.Because under rough sledding such as thunder, electricity; high voltage distribution installation is easy to be damaged because of being subjected to attacking; even can cause loss of life or personal injury; therefore; need safe and reliable grounding system be installed to it; make under the lamp situation that is subjected to shocking by electricity, this grounding system can deflect from equipment to electric energy, thereby reaches the purpose of protection personal safety and device security.
Prior art, with AIS (conventional open type equipment) is example, with the outdoor open type capacitance type potential transformer of 500kV is example, its conventional grounding system as shown in Figure 1, it includes concrete pillar 100 and concrete foundation 200, column cap steel plate 300 of pillar 100 upper ends welding, capacitance type potential transformer 400 lies on the column cap steel plate 300.Fix a round steel 500 along pillar 100, round steel 500 upper ends welding or be bolted in the earth terminal of capacitance type potential transformer 400, in depth following 0.8 meter, round steel 500 lower ends changes horizontal direction again into and lays, and extends at a distance and be connected with main earth bus.Remaining open type equipment links to each other with main earth mat with similar grounding system respectively as circuit breaker, isolating switch, current transformer, lightning arrester etc. in the AIS equipment.And GIS is different with AIS with HGIS equipment, it is all concentrated equipment such as circuit breaker, isolating switch, current transformer, lightning arrester, capacitance type potential transformer and is encapsulated in the airtight metal shell of a cover, and fills sulfur hexafluoride gas with as the insulation between those equipment.Therefore, the grounding system of the grounding system of GIS and HGIS equipment and AIS equipment is no matter aspect profile, weight of equipment, mounting means, still to aspects such as grounding requirement, foundation of civil work, bearing capacity of concrete-filled, differential settlements, all different with conventional AIS equipment.Therefore, need a kind of novel grounded system, it is safe and reliable, and generally is applicable to GIS and HGIS equipment.
Therefore, we need develop targetedly a kind of, the safe and reliable and novel grounded system that generally is applicable to.
[summary of the invention]
The purpose of this utility model provides a kind of safe and can be applicable to the novel grounded system of GIS and HGIS equipment.
The utility model is achieved in that
A kind of novel grounded system that is applied to GIS, HGIS, include power distribution equipment, this power distribution equipment equipment includes three-phase equipment, this grounding system also includes: connect lead, earthing conductor, annular earth bus, this end that connects lead is connected with the earth point of this GIS or HGIS power distribution equipment, the other end is connected with this earthing conductor, and this earthing conductor is embedded in the concrete foundation.Because of being subjected under the situations such as thunder, electric shock, and when making grounding apparatus generation electric fault or short circuit, electric energy will connect lead by this and pass to this earthing conductor, through this earthing conductor electric energy will be discharged into the earth again at GIS or HGIS power distribution equipment.
Increase the ground network area and can reduce earth resistance, therefore, for electric energy is released into the earth fast, this grounding system more includes main ground network.
Preferably, this grounding system also includes earth bus, it is embedded in underground, around the every phase grounding apparatus in this power distribution equipment three-phase equipment, and form a closed ring around this power distribution equipment, and this earth bus and this earthing conductor welding, 2 of this earth bus are connected with this main ground network, the electric energy that this earthing conductor will pass through is directed at this earth bus, by this earth bus electric energy is directed at main ground network again.Around this power distribution equipment, form the square earth bus of sealing, make that the Electric Field Distribution in this earth bus is more even, reduce the harm of step voltage to equipment, the person, and when running into thunderbolt, can avoid producing greatly the danger of equipment high voltage counterattack, the effect that can play earial drainage effectively and all press because of the ground point potential gradient.
Further, each of this grounding apparatus also is provided with alternate channelizing line between mutually, and each grounding apparatus connection mutually of this alternate channelizing line and this power distribution equipment, and be connected with this earth bus makes electric energy diversion grounding apparatus more smoothly.
For thunder-strike current being imported the earth smoothly; reduce the thunder overvoltage rapidly; be embedded in equipment such as earth bus, alternate channelizing line underground; simultaneously; can be good at equipment such as protective earthing conductor, earth bus, alternate channelizing line; avoid suffering solar radiation, natural cause such as drench with rain, and artificial destruction etc.
Each phase grounding apparatus of this grounding apparatus includes: equipment such as circuit breaker, isolating switch, current transformer, lightning arrester and capacitance type potential transformer, therefore, the weight of grounding apparatus is heavier, preferably below this each phase grounding apparatus, be preset with concrete foundation, can play a supporting role to this grounding apparatus, but because concrete foundation is an insulator, therefore, in this concrete foundation, be embedded with earthing conductor, this earthing conductor can conduct to main ground network through earth bus again with conduct electrical energy to earth bus.
Preferably, have on this power distribution equipment support is arranged, support is provided with earth point, and this end that connects lead then is connected with this earth point, by this earth point with the conduct electrical energy on the power distribution equipment to earthing conductor, electric energy is being imported the earth passing through this earthing conductor.
The utility model is applied to the novel grounded system of GIS, HGIS, below GIS or HGIS power distribution equipment, concrete foundation is set, in the periphery of this concrete foundation annular earth bus is set, and in concrete foundation default earthing conductor, one end of earthing conductor and this earth bus welding, the other end is connected with this earth lead.When GIS or HGIS power distribution equipment run into thunderbolt, when equipment fault or short circuit took place, short circuit current can be led the earth off fast by this grounding system, thereby reaches the purpose of protection equipment and personnel's personal safety.
[description of drawings]
Fig. 1: the grounding system of conventional AIS;
Fig. 2: the utility model is applied to the final result portion schematic diagram of the novel grounded system of GIS, HGIS;
Fig. 3: the planar structure schematic diagram of the grounding system of the utility model power distribution equipment.
[embodiment]
Below in conjunction with accompanying drawing the utility model is elaborated.
As shown in Figures 2 and 3, wherein, Fig. 2 has illustrated the schematic diagram of ground structure of the arbitrary phase equipment in GIS or the HGIS power distribution equipment.The utility model is applied to the novel grounded system of GIS, HGIS, and it includes power distribution equipment 1, connects lead 2 and earthing conductor 3.Wherein, this power distribution equipment 1 includes three- phase grounding apparatus 1a, 1b, 1c (Fig. 2 is that example is described with grounding apparatus 1a only), this end that connects lead 2 is connected with this grounding apparatus 1a, and the other end is connected with this earthing conductor 3, and this earthing conductor 3 is embedded in the concrete foundation.Power distribution equipment 1 because of situations such as thunder, electric shocks under, and cause power distribution equipment 1 that electric fault takes place, this connects lead 2 can be discharged into the earth 8 by this earthing conductor 3 with electric energy again with conduct electrical energy in earthing conductor 3.
In the present embodiment, to be preferably area of section be 185mm to this connection lead 2
2Naked copper, and earthing conductor 3 is preferably the copper bar that sectional area is 65X12.This connection lead 2 can preferably adopt the mode of bolt crimping to fix with the fixed form of this earthing conductor 3.
Continuation is referring to Fig. 2, and this grounding apparatus 1a also has a support 11, and this support 11 is used for supporting and fixing this grounding apparatus 1a, also is provided with earth point 12 on this support 11, and the mode that this earth point 12 passes through the bolt crimping is connected lead 2 with this fixedly connected.
The below of this grounding apparatus 1a is embedded with a concrete foundation 4a independently, this concrete foundation 4a is located at the below of this grounding apparatus 1a, its upper surface is equal with the face of land, can in concrete foundation 4a, increase firmer materials such as reinforcing bar, thereby the grounding apparatus 1a that reaches whole phase plays a supporting role.The shape of this concrete foundation 4a, area can determine that the utility model preferably is made as into strip according to shape, the area of grounding apparatus 1a, the about 1500mm of its thickness, the about 30m of length, wide about 4m.In concrete foundation 4a work progress, need be in concrete foundation 4a pre-buried sectional area be the copper bar of 65X12 as earthing conductor 3, an end of this earthing conductor 3 be connected lead 2 and connect, and equal with the face of land, its other end is in than 800mm place under the table, and stretches out outside the concrete foundation 4a.
As shown in Figure 3, this grounding system also includes earth bus 5, reaches main ground network 6, alternate channelizing line 7, this earth bus 5 is located at the periphery of this concrete foundation 4a, 4b, 4c, and be embedded in 800mm place, the face of land in advance, around this power distribution equipment 1 grounding apparatus 1a, 1b, 1c, and form square with sealing, this earth bus 6 has at least be connected with this main ground network 6 at 2, and this alternate channelizing line 7 is communicated with grounding apparatus 1a, the 1b of this power distribution equipment 1,1c, and is connected with this grounding apparatus 1a.It is the earth bus that the zinc-coated flat steel sheet of 60X8 is welded into annular that the material of this earth bus 5, alternate channelizing line 7 can be selected sectional area for use, and perhaps selecting area of section for use is 185mm
2Naked copper also can realize the purpose of this utility model.The other end of this earthing conductor 3 stretches out outside the concrete foundation 4a, be connected with this earth bus 6, because of earthing conductor 3 different with the material of earth bus 6, so can adopt the mode of heat release welding to connect.The earth bus 6 that sealing circularizes makes its inner Electric Field Distribution more even, and voltage ratio is more even, therefore, helps the release promptly of electric current.
Preferably, be provided with a vertical grounding electrode 9 at least in the junction of alternate channelizing line 7 and this earth bus 6,800mm place, the face of land is located at the top of this vertical grounding electrode 9, and the terminal 3m that extends downwards can directly lead electric current in the earth 8.
In fact, the below of this grounding apparatus 1a, 1b, 1c is respectively equipped with concrete foundation 4a, 4b, 4c, at this, at this, is example explanation with grounding apparatus 1a only, the ground structure of grounding apparatus 1b, 1c to be arranged at 1a identical.Each phase grounding apparatus of this power distribution equipment 1 all includes: circuit breaker, isolating switch, current transformer, lightning arrester and capacitance type potential transformer.
In the utility model, connect the material of lead, earthing conductor, earth bus, alternate channelizing line and bury the ground degree of depth, all be as the criterion with national standard, scope of the present utility model is not as restriction.
More than this is preferred embodiment of the present invention only, protection scope of the present invention is not limited thereto, and anyly all belongs within the protection range of the present invention based on the equivalent transformation on the technical solution of the present invention.
Claims (9)
1. novel grounded system that is applied to GIS, HGIS, include GIS or HGIS power distribution equipment, this power distribution equipment equipment includes three-phase equipment, it is characterized in that, this grounding system also includes: connect lead, earthing conductor, this end that connects lead is connected with this GIS or HGIS power distribution equipment earth point, and the other end is connected with this earthing conductor, and this earthing conductor is embedded in the equipment concrete foundation in advance.
2. the novel grounded system that is applied to GIS, HGIS as claimed in claim 1 is characterized in that this grounding system also includes earth bus, is arranged at the periphery of this each phase grounding apparatus, and be embedded in underground, this earth bus and this earthing conductor welding.
3. the novel grounded system that is applied to GIS, HGIS as claimed in claim 2 is characterized in that, this earth bus is around the every phase grounding apparatus in the three-phase grounding apparatus of this power distribution equipment, and forms a closed ring earth bus around this power distribution equipment.
4. as claim 2 or the 3 described novel grounded systems that are applied to GIS, HGIS, it is characterized in that this grounding system more includes main ground network, 2 of this earth bus are connected with this main ground network.
5. the novel grounded system that is applied to GIS, HGIS as claimed in claim 1 is characterized in that this grounding system also includes alternate channelizing line, and each of this alternate channelizing line and this power distribution equipment grounding apparatus mutually connects, and is connected with this earth bus.
6. the novel grounded system that is applied to GIS, HGIS as claimed in claim 1 is characterized in that, each phase grounding apparatus below of this power distribution equipment is equipped with concrete foundation, and this earthing conductor is embedded in this concrete foundation in advance.
7. the novel grounded system that is applied to GIS, HGIS as claimed in claim 1 is characterized in that earth bus, alternate channelizing line all are embedded in underground.
8. the novel grounded system that is applied to GIS, HGIS as claimed in claim 1 is characterized in that this power distribution equipment has support, and this support is provided with earth point, and an end of this connection lead is connected with the earth point on this power distribution equipment.
9. the novel grounded system that is applied to GIS, HGIS as claimed in claim 1 is characterized in that, each phase grounding apparatus of this power distribution equipment includes: circuit breaker, isolating switch, current transformer, lightning arrester and capacitance type potential transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201196596U CN201639188U (en) | 2010-02-10 | 2010-02-10 | Novel earthing system applied to GIS and HGIS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201196596U CN201639188U (en) | 2010-02-10 | 2010-02-10 | Novel earthing system applied to GIS and HGIS |
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| Publication Number | Publication Date |
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| CN201639188U true CN201639188U (en) | 2010-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201196596U Expired - Fee Related CN201639188U (en) | 2010-02-10 | 2010-02-10 | Novel earthing system applied to GIS and HGIS |
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| CN (1) | CN201639188U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114512831A (en) * | 2022-03-23 | 2022-05-17 | 国网智慧能源交通技术创新中心(苏州)有限公司 | Grounding protection device matched with mobile energy storage vehicle |
-
2010
- 2010-02-10 CN CN2010201196596U patent/CN201639188U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114512831A (en) * | 2022-03-23 | 2022-05-17 | 国网智慧能源交通技术创新中心(苏州)有限公司 | Grounding protection device matched with mobile energy storage vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHINA ENERGY ENGINEERING GROUP GUANGDONG ELECTRIC Free format text: FORMER NAME: GUANGDONG ELECTRIC POWER DESIGN INSTITUTE |
|
| CP03 | Change of name, title or address |
Address after: 510663 Luogang District, Guangdong, Guangzhou Science City Fung Road, No. 1, No. Patentee after: Guangdong Electric Power Design Institute of CEEC Patentee after: Huaneng Power International, Inc. Address before: 510600 No. 846 Dongfeng East Road, Guangzhou, Guangdong, Yuexiu District Patentee before: Guangdong Electric Power Design Institute Patentee before: Huaneng Power International, Inc. |
|
| C56 | Change in the name or address of the patentee |
Owner name: CHINA ENERGY ENGINEERING GROUP GUANGDONG ELECTRIC Free format text: FORMER NAME: CHINA ENERGY ENGINEERING GROUP GUANGDONG ELECTRIC POWER DESIGN INSTITUTE |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 510663 Luogang District, Guangdong, Guangzhou Science City Fung Road, No. 1, No. Patentee after: Company limited of China Energy Engineering Group Guangdong Electric Power Design Institute Patentee after: Huaneng Power International, Inc. Address before: 510663 Luogang District, Guangdong, Guangzhou Science City Fung Road, No. 1, No. Patentee before: Guangdong Electric Power Design Institute of CEEC Patentee before: Huaneng Power International, Inc. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101117 Termination date: 20170210 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |