CN204243554U - The 1000kV high resistance neutral point circuit of flexible conductor is maked somebody a mere figurehead in a kind of application - Google Patents
The 1000kV high resistance neutral point circuit of flexible conductor is maked somebody a mere figurehead in a kind of application Download PDFInfo
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- CN204243554U CN204243554U CN201420778206.2U CN201420778206U CN204243554U CN 204243554 U CN204243554 U CN 204243554U CN 201420778206 U CN201420778206 U CN 201420778206U CN 204243554 U CN204243554 U CN 204243554U
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Abstract
The 1000kV high resistance neutral point circuit that the utility model provides a kind of application to make somebody a mere figurehead flexible conductor, comprise A phase high resistance (3), B phase high resistance (5), C phase high resistance (8) and rigid posts (1) and flexible conductor (4), described flexible conductor (4) to be suspended between two rigid posts (1) and to be connected with insulating between rigid posts (1), and the high resistance neutral point (9) in described A phase high resistance (3), B phase high resistance (5) and C phase high resistance (8) is electrically connected with flexible conductor (4) respectively.The utility model eliminates the female wiring of the large pipe of hardness, 1000kV high resistance neutral point circuit is made to become the system that is flexible coupling, neither need to increase other electric equipment, and it is also non-interference between each electric equipment in loop, can greatly improve its shock resistance and operating safety factor, the shockproof requirements in 8 degree of high-intensity earthquake areas can be met, there is the outstanding advantages such as loop structure is simpler, implementation cost is cheap.
Description
Technical field
The utility model relates to a kind of 1000kV high resistance neutral point circuit, especially relates to the 1000kV high resistance neutral point circuit that flexible conductor is maked somebody a mere figurehead in a kind of application.
Background technology
At present, the design of extra-high-voltage alternating current 1000kV transformer station is comparatively ripe, and usually, 1000kV transformer substation construction in the area of 7 degree and following earthquake intensity, but also has and builds in the regional 1000kV transformer station of earthquake intensity 8 degree.Because the physical dimension of the 1000kV high resistance (abbreviation of high-voltage shunt reactor) of 1000kV substation use is large, center of gravity is low and quality large, it based on detrusion, belongs to heavy dwarf forms equipment under geological process.Through simulation calculation, when an earthquake occurs, the fuel tank of high resistance can have larger amplification to seismic wave, and general amplification coefficient gets 2 times.Such as, when the horizontal acceleration under 8 degree of earthquakes is 0.2g (g is wherein acceleration of gravity, lower same), then the horizontal acceleration produced at the top of oil-tank of high resistance can reach 0.4g.Therefore, the shock resistance of 1000kV transformer station to high resistance proposes very high requirement.
Existing construction is in the 1000kV transformer station in 8 degree of earthquake intensity areas, 1000kV high resistance neutral point circuit wherein has four component equipments usually, comprise A, B, C three-phase 1000kV high resistance and low reactance, usually, between A, B, C three-phase 1000kV high resistance and need between high resistance and low reactance to arrange fire compartment wall.Fire compartment wall arranges post insulator, then mounting pipe is female on post insulator, between equipment, adopts the female directly connection of pipe.Because the hardness of the maternal body of pipe is large, and pipe bus is longer, and when there is high-intensity earthquake, the pipe mother of fire compartment wall to its top has amplification, and amplification coefficient is generally 2 times.Therefore, this, by comparatively large for the interaction force caused between equipment, causes neutral bushing to rupture even thus, thus can not meet such as 8 degree of high-intensity earthquake area shockproof requirementss to transformer station, badly influences the safe operation of 1000kV transformer station.
Utility model content
The technical problems to be solved in the utility model is: for prior art Problems existing, and the 1000kV high resistance neutral point circuit providing a kind of application to make somebody a mere figurehead flexible conductor, improves its shock resistance, and structure is simple, implementation cost is cheap.
The technical problems to be solved in the utility model realizes by the following technical solutions: the 1000kV high resistance neutral point circuit of flexible conductor is maked somebody a mere figurehead in a kind of application, comprise A phase high resistance, B phase high resistance, C phase high resistance and rigid posts and flexible conductor, described flexible conductor to be suspended between two rigid posts and to be connected with insulating between rigid posts, and the high resistance neutral point in described A phase high resistance, B phase high resistance and C phase high resistance is electrically connected with flexible conductor respectively.
Preferably, described flexible conductor is connected by forming insulation between strain insulator string with rigid posts.
Preferably, the high resistance neutral point in described A phase high resistance, B phase high resistance and C phase high resistance is electrically connected with flexible conductor respectively by lead-in wire, and described lead-in wire is parallel to each other.
Preferably, after described flexible conductor suspention is built on stilts, its sag formed is 2.5m-4m.
Preferably, described flexible conductor adopts steel reinforced aluminium conductor or fine aluminium flexible conductor.
Preferably, the sectional area of described flexible conductor is 400-630 square millimeter.
Preferably, also comprise small reactor on neutral point, described small reactor on neutral point is electrically connected with between flexible conductor.
Preferably, fire compartment wall is provided with between described small reactor on neutral point with C phase high resistance.
Preferably, fire compartment wall is provided with between described A phase high resistance with B phase high resistance and/or between described B phase high resistance and C phase high resistance.
Preferably, described fire compartment wall is lower than rigid posts, and difference in height is between the two more than 2m.
Compared with prior art, the beneficial effects of the utility model are: owing to eliminating the female wiring of the large pipe of hardness, adopt the flexible conductor of suspention by A phase high resistance, be electrically connected between high resistance neutral point in B phase high resistance and C phase high resistance and be connected into loop, this 1000kV high resistance neutral point circuit is made to become the system that is flexible coupling, when there is the sharp poundings such as earthquake, this A phase high resistance in system that is flexible coupling, B phase high resistance and C phase high resistance spatially have larger freedom of movement, A phase high resistance, do not interconnect between B phase high resistance and C phase high resistance the problem of active force, thus can greatly improve its shock resistance, the shockproof requirements in 8 degree of high-intensity earthquake areas can be met, and, because this flexible conductor be flexible coupling in system circuit is suspension hollow structure, do not need to increase other electric equipment, and non-interference between each electric equipment in loop, therefore, loop structure of the present utility model is simpler, its implementation cost is lower, has good economic benefit.
Accompanying drawing explanation
Fig. 1 is the structural map that the 1000kV high resistance neutral point circuit of flexible conductor is maked somebody a mere figurehead in a kind of application of the utility model.
Mark in figure: 1-rigid posts, 2-strain insulator string, 3-A phase high resistance, 4-flexible conductor, 5-B phase high resistance, 6-goes between, 7-fire compartment wall, 8-C phase high resistance, 9-high resistance neutral point, 10-small reactor on neutral point.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with the drawings and specific embodiments, the utility model is described in detail.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
The 1000kV high resistance neutral point circuit of flexible conductor is maked somebody a mere figurehead in a kind of application as shown in Figure 1, mainly comprise rigid posts 1, A phase high resistance 3, B phase high resistance 5 and C phase high resistance 8 and flexible conductor 4, rigid posts 1 is wherein two steel columns be parallel to each other, two strain insulator strings 2 are articulated in respectively two rigid posts 1 tops, described flexible conductor 4 two ends are connected with strain insulator string 2 respectively, flexible conductor 4 is suspended between two rigid posts 1 by strain insulator string 2 is built on stilts, and is connected with defining between rigid posts 1 to insulate.High resistance neutral point 9 in described A phase high resistance 3, B phase high resistance 5 and C phase high resistance 8 is electrically connected with flexible conductor 4 respectively by lead-in wire 6, and is parallel to each other between three lead-in wires 6.After described flexible conductor 4 suspends in midair and makes somebody a mere figurehead, position, intermediate portion naturally droops, and sag is generally 2.5m-4m.Adopt said structure that 1000kV high resistance neutral point circuit of the present utility model can be made to become the system that is flexible coupling, when there is the sharp poundings such as earthquake, this A phase high resistance 3, B phase high resistance 5 and C phase high resistance 8 be flexible coupling in system spatially has larger freedom of movement, efficiently avoid A phase high resistance 3, between B phase high resistance 5 and C phase high resistance 8, adopt pipe mother to connect the interconnection active force problem easily caused, therefore, can greatly improve its shock resistance, the shockproof requirements in 8 degree of high-intensity earthquake areas can be met.Because the flexible conductor 4 in the utility model is suspension hollow structures, effectively can prevent flexible conductor 4 from touching with the A phase high resistance 3 be positioned at below it, B phase high resistance 5, C phase high resistance 8 or other electric equipment generation wipings, ensure the security of operation of 1000kV high resistance neutral point circuit.In addition, enforcement of the present utility model does not need to increase other electric equipment, and non-interference between each electric equipment in loop, and therefore, its loop structure is more simple, and implementation cost is also cheaper, has good economic benefit.
In 1000kV electrical network, because electric pressure is high, transmission line is longer, and load current is large, causes secondary arc current also larger.Due to the impact of secondary arc current, the time causing the general single-pole reclosing time to coincide than three is long, so that blow-out.In order to reduce secondary arc current, improve reclosing success rate, can arrange small reactor on neutral point 10 in the increase of 1000kV high resistance neutral point circuit, described small reactor on neutral point 10 is electrically connected with flexible conductor 4 by lead-in wire 6, as shown in Figure 1.When a fire, in order to the safe operation effectively preventing fire spread from jeopardizing whole 1000kV high resistance neutral point circuit, between A phase high resistance 3 with B phase high resistance 5, between B phase high resistance 5 with C phase high resistance 8, between small reactor on neutral point 10 with C phase high resistance 8, fire compartment wall 7 is set respectively, and fire compartment wall 7 is highly set to 7m, rigid posts 1 is highly set to 9m, difference in height is between the two 2m, so both can effectively prevent fire from spreading in 1000kV high resistance neutral point circuit of the present utility model, avoid flexible conductor 4 and the A phase high resistance 3 be positioned at below it, B phase high resistance 5, C phase high resistance 8 or other electric equipment generation wipings are touched, but also fire compartment wall 7 can be saved to greatest extent, the input cost of rigid posts 1 and flexible conductor 4.Described flexible conductor 4 can adopt steel reinforced aluminium conductor or fine aluminium flexible conductor, its sectional area is generally 400,500,630 square millimeters, the conductive security of flexible conductor 4 can be guaranteed, also can ensure that flexible conductor 4 has enough tensile strength, thus improve the overall anti-seismic performance of 1000kV high resistance neutral point circuit, guarantee its safe operation, and reduce the use cost of flexible conductor 4.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; it should be pointed out that all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection range of the present utility model.
Claims (10)
1. the 1000kV high resistance neutral point circuit of the built on stilts flexible conductor of application, comprise A phase high resistance (3), B phase high resistance (5) and C phase high resistance (8), it is characterized in that: also comprise rigid posts (1) and flexible conductor (4), described flexible conductor (4) to be suspended between two rigid posts (1) and to be connected with insulating between rigid posts (1), and the high resistance neutral point (9) in described A phase high resistance (3), B phase high resistance (5) and C phase high resistance (8) is electrically connected with flexible conductor (4) respectively.
2. the 1000kV high resistance neutral point circuit of flexible conductor is maked somebody a mere figurehead in application according to claim 1, it is characterized in that: described flexible conductor (4) is connected by being formed to insulate between strain insulator string (2) with rigid posts (1).
3. the 1000kV high resistance neutral point circuit of flexible conductor is maked somebody a mere figurehead in application according to claim 1, it is characterized in that: the high resistance neutral point (9) in described A phase high resistance (3), B phase high resistance (5) and C phase high resistance (8) is electrically connected with flexible conductor (4) respectively by lead-in wire (6), and described lead-in wire (6) is parallel to each other.
4. the 1000kV high resistance neutral point circuit of flexible conductor is maked somebody a mere figurehead in the application according to any one of claim 1-3, it is characterized in that: after described flexible conductor (4) suspention is built on stilts, its sag formed is 2.5m-4m.
5. the 1000kV high resistance neutral point circuit of flexible conductor is maked somebody a mere figurehead in application according to claim 4, it is characterized in that: described flexible conductor (4) adopts steel reinforced aluminium conductor or fine aluminium flexible conductor.
6. the 1000kV high resistance neutral point circuit of flexible conductor is maked somebody a mere figurehead in application according to claim 4, it is characterized in that: the sectional area of described flexible conductor (4) is 400-630 square millimeter.
7. the 1000kV high resistance neutral point circuit of flexible conductor is maked somebody a mere figurehead in the application according to any one of claim 1-3, it is characterized in that: also comprise small reactor on neutral point (10), be electrically connected between described small reactor on neutral point (10) with flexible conductor (4).
8. the 1000kV high resistance neutral point circuit of flexible conductor is maked somebody a mere figurehead in application according to claim 7, it is characterized in that: be provided with fire compartment wall (7) between described small reactor on neutral point (10) with C phase high resistance (8).
9. the 1000kV high resistance neutral point circuit of flexible conductor is maked somebody a mere figurehead in application according to claim 1, it is characterized in that: be provided with fire compartment wall (7) between described A phase high resistance (3) with B phase high resistance (5) and/or between described B phase high resistance (5) and C phase high resistance (8).
10. the 1000kV high resistance neutral point circuit of flexible conductor is maked somebody a mere figurehead in the application according to Claim 8 or described in 9, it is characterized in that: described fire compartment wall (7) is lower than rigid posts (1), and difference in height is between the two more than 2m.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420778206.2U CN204243554U (en) | 2014-12-11 | 2014-12-11 | The 1000kV high resistance neutral point circuit of flexible conductor is maked somebody a mere figurehead in a kind of application |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420778206.2U CN204243554U (en) | 2014-12-11 | 2014-12-11 | The 1000kV high resistance neutral point circuit of flexible conductor is maked somebody a mere figurehead in a kind of application |
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| CN204243554U true CN204243554U (en) | 2015-04-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104538865A (en) * | 2014-12-11 | 2015-04-22 | 中国电力工程顾问集团西南电力设计院有限公司 | 1000kV high voltage shunt reactor neutral point return circuit utilizing aerial flexible lead |
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2014
- 2014-12-11 CN CN201420778206.2U patent/CN204243554U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104538865A (en) * | 2014-12-11 | 2015-04-22 | 中国电力工程顾问集团西南电力设计院有限公司 | 1000kV high voltage shunt reactor neutral point return circuit utilizing aerial flexible lead |
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