CN210273032U - High-reliability 220 KV indoor power transformation device - Google Patents
High-reliability 220 KV indoor power transformation device Download PDFInfo
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- CN210273032U CN210273032U CN201921029317.2U CN201921029317U CN210273032U CN 210273032 U CN210273032 U CN 210273032U CN 201921029317 U CN201921029317 U CN 201921029317U CN 210273032 U CN210273032 U CN 210273032U
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Abstract
The utility model discloses a high reliability 220 kilovolt indoor substation device, including distribution building and main transformer, the high-voltage terminal of main transformer is connected with 220 kilovolt high-voltage line, after stepping down, its low-voltage end output 110 kilovolt power, the low-voltage terminal of main transformer is equipped with main transformer 110 kilovolt sleeve pipe terminal, its high-voltage terminal is equipped with the main transformer 220 kilovolt sleeve pipe terminal who is connected with the 220 kilovolt high-voltage line; the transformer is characterized in that a main transformer 110 kV side lead framework is arranged near the main transformer, a suspension insulator string is arranged on the main transformer 110 kV side lead framework, the suspension insulator string and a main transformer 110 kV side sleeve terminal are connected through a main transformer 110 kV side lead, a 110 kV GIS pipe sleeve terminal is arranged outside the distribution building, and the suspension insulator string and the 110 kV GIS pipe sleeve terminal are connected through a main transformer 110 kV side overline. The utility model discloses can reduce and draw the connecting wire to the main pulling force that becomes bushing terminal to reduce the main oil leakage oil that becomes bushing terminal department, and the later maintenance of being convenient for.
Description
Technical Field
The utility model relates to a high voltage power transmission and transformation technical field especially relates to an indoor transformer device of high reliability 220 kilovolts.
Background
GIS (gas insulated metal enclosed switchgear) substation equipment is very suitable for the construction of an intelligent power grid due to high reliability, strong safety and small occupied area. According to the requirement of standard design of a transformer substation of the southern power grid company, the GIS equipment sleeve terminal and the transformer sleeve terminal are directly jumped through a large-section steel-cored aluminum stranded wire. However, the 110 kv bushing terminals of the main transformer of the existing 220 kv indoor substation operate for a long time and are subjected to large wire tension for a long time, easily deformed and causing a safety accident.
As shown in fig. 1, a main transformer 110 kv side lead 2 'of a main transformer 1' of a conventional 220 kv indoor substation is directly connected in an overhead jumper between a 110 kv GIS bushing terminal 3 'and a main transformer 110 kv bushing terminal 4' by using a steel-cored aluminum strand, and two ends of the jumper wire are connected with the bushing terminals at two sides by bolts through equipment clamps. Because the horizontal distance between the 110 KV GIS sleeve terminal 3' and the main transformer 110 KV sleeve terminal 4' is larger, the horizontal span of the main transformer 110 KV side lead 2' between the terminals at two sides is larger, and no other supporting or fixing measures are arranged in the middle of the main transformer 110 KV side lead 2' of the jumper wire, the tension of the main transformer 110 KV side lead 2' is larger; in addition, because the capacity of the 220 kv main transformer 1 'is large, the rated current of the 110 kv side is large, in the prior art, double split conductors are adopted as the main transformer 110 kv side lead 2', the double split conductors are heavy, the tension of the main transformer 110 kv side lead 2 'between the bushing terminals at two sides is directly increased, and the weight of the jumper conductor is completely born by the 110 kv GIS bushing terminal 3' and the main transformer 110 kv bushing terminal 4', therefore, the tension increase of the main transformer 110 kv side lead 2' causes the tension of the main transformer 110 kv side lead 2 'to the main transformer 110 kv bushing terminal 4' to be synchronously increased. The 110 kilovolt sleeve terminal 4' of main transformer bears the effect of great pulling force for a long time, will take place the displacement of relative sleeve pipe body gradually, destroys the sealed measure between 110 kilovolt sleeve pipe terminal 4' of main transformer and the sleeve pipe body, finally makes the gap appear between 110 kilovolt sleeve pipe terminal 4' of main transformer and the sleeve pipe body, and insulating oil just leaks out from the gap in the sleeve pipe of main transformer to cause great incident.
Among the prior art, chinese utility model patent with publication number CN 204992266U discloses an inlet wire draws and connects device of 220 kilovolt main transformer, through set up main transformer 110 kilovolt side lead wire framework near main transformer 110 kilovolt sleeve pipe terminal, through the cooperation with the first hanging point of distribution building outer wall, set up main transformer 110 kilovolt side overline in 110 kilovolt GIS sleeve pipe terminal and main transformer 110 kilovolt sleeve pipe terminal top, two sections draw respectively and connect 110 kilovolt sleeve pipe terminal and main transformer 110 kilovolt sleeve pipe terminal to the weight of drawing and connecting the wire on the overline and all undertake by the overline, alleviate the main transformer 110 kilovolt sleeve pipe terminal and the long-term pulling force that bears of 110 kilovolt sleeve pipe terminal by a wide margin, thereby reduce pulling force to the destruction of sleeve pipe terminal and sleeve pipe intervallum leakproofness and lead to sleeve pipe terminal seepage oil, reduce the incidence of incident. However, since leakage current of an insulator string running outdoors is affected by environmental pollution, in this prior art, a first hanging point needs to be arranged on an outer wall of a distribution building, and in order to reduce current leakage, dust cleaning needs to be regularly performed on the strain insulator string on the first hanging point, so that the later maintenance cost is increased, and the main transformer has a long 110 kv side span length, so that the material cost is increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a high reliability 220 kilovolt indoor transformer device is provided, reduces and draws the pulling force that the wire connects to the main sleeve pipe terminal that becomes to reduce the main sleeve pipe terminal department oil leakage that becomes, and the later maintenance of being convenient for.
In order to solve the technical problem, the utility model provides a high reliability 220 kv indoor transformer device, including distribution building and main transformer, the high-voltage end of the main transformer is connected with 220 kv high-voltage line, after voltage reduction, its low-voltage end outputs 110 kv power, the low-voltage end of the main transformer is provided with a main transformer 110 kv sleeve terminal, the high-voltage end is provided with a main transformer 220 kv sleeve terminal connected with the 220 kv high-voltage line;
a main transformer 110 KV side lead framework is arranged near the main transformer, a suspension insulator string is arranged on the main transformer 110 KV side lead framework, the suspension insulator string and the main transformer 110 KV sleeve terminal are connected through a main transformer 110 KV side lead,
and 110 KV GIS pipe sleeve terminals are arranged outside the power distribution building, and the suspension insulator string and the 110 KV GIS pipe sleeve terminals are connected through a 110 KV side overline of a main transformer.
As an improvement of the above scheme, the distribution building comprises 220 kv and 110 kv GIS, the 110 kv GIS is provided with the 110 kv GIS bushing terminal outdoors, the 220 kv GIS is provided with the 220 kv GIS bushing terminal outdoors, and the 220 kv GIS bushing terminal and the 220 kv bushing terminal of the main transformer are connected through the 220 kv high-voltage wire.
As a modification of the above scheme, the 220 kv high-voltage line comprises a main transformer 220 kv side jumper, a main transformer 220 kv side lead, a 220 kv GIS side lead, and a 220 kv side lead,
a main transformer 220 KV side lead framework is further arranged near the main transformer, a first hanging point is arranged on the outer side of the distribution building, and two ends of a main transformer 220 KV side span line are respectively connected with the main transformer 220 KV side lead framework and the first hanging point;
the 220 KV side overline lower lead 220 KV GIS side lead of the main transformer is connected with a 220 KV GIS sleeve terminal;
the 220 KV side overline down-lead main transformer 220 KV side lead of the main transformer is connected with a 220 KV sleeve terminal of the main transformer;
the main transformer 220 KV side overline and the main transformer 220 KV side lead are connected through a 220 KV side lead.
As an improvement of the scheme, the main transformer is an oil-immersed main transformer, and a main transformer oil tank is arranged in the oil-immersed main transformer.
As an improvement of the scheme, the distance between the center line of the 110 KV side lead frame of the main transformer and the center line of the oil tank of the main transformer is 1.5-2 m.
As an improvement of the scheme, the distance between the center line of the 220 KV side lead frame of the main transformer and the center line of the oil tank of the main transformer is not less than 4.5 m.
As an improvement of the scheme, the main transformer 220 KV side lead frame is 3-7 m higher than the main transformer 110 KV side lead frame.
Implement the utility model discloses, following beneficial effect has:
the utility model discloses set up main transformer 110 kilovolt side lead wire framework near main transformer to hang the dress at the crossbeam below of main transformer 110 kilovolt side lead wire framework and hang insulator chain, hang insulator chain end fitting and draw the dress main transformer 110 kilovolt side overline and main transformer 110 kilovolt side lead wire respectively, main transformer 110 kilovolt side overline is connected with 110 kilovolt GIS pipe box terminal, and main transformer 110 kilovolt side lead wire is connected with main transformer 110 kilovolt sleeve terminal. Because the weight of the 110 KV side lead wire of the main transformer and the 110 KV side overline of the main transformer is borne by the suspension insulator string on the 110 KV side lead wire framework of the main transformer, the pulling force borne by the 110 KV sleeve terminal and the 110 KV GIS sleeve terminal for a long time is greatly reduced, so that the leakage oil of the sleeve terminal caused by the damage of the pulling force to the sealing property between the sleeve terminal and the sleeve body is reduced, and the occurrence rate of safety accidents is reduced; in addition, the 110 KV side overline length of the main transformer is short, and only the suspension insulator string needs to be hung on the 110 KV side lead framework of the main transformer, and a corresponding hanging point and a strain insulator string do not need to be arranged on a distribution building, so that the structure is simpler and more reliable, the conductor material and the corresponding installation material consumption are saved, and the later maintenance cost is low.
Drawings
Fig. 1 is a schematic diagram of a conventional 220 kv indoor substation main transformer inlet arrangement;
fig. 2 is a schematic structural diagram of an embodiment of the 220 kv indoor power transformation device of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 2, the present invention provides an embodiment of a high-reliability 220 kv indoor power transformation device, including a distribution building 1 and a main transformer 2, wherein a high-voltage end of the main transformer 2 is connected to a 220 kv high-voltage line, and after voltage reduction, a low-voltage end of the main transformer outputs 110 kv power, a low-voltage end of the main transformer 2 is provided with a main transformer 110 kv sleeve terminal 21, and a high-voltage end of the main transformer is provided with a main transformer 220 kv sleeve terminal 22 connected to the 220 kv high-voltage line; a main transformer 110 kV side lead framework 4 is arranged near the main transformer 2, a suspension insulator string 41 is arranged on the main transformer 110 kV side lead framework 4, the suspension insulator string 41 and the main transformer 110 kV side sleeve terminal 21 are connected through a main transformer 110 kV side lead 5, a 110 kV GIS pipe sleeve terminal 111 is arranged outside the distribution building 1, and the suspension insulator string 41 and the 110 kV GIS pipe sleeve terminal 111 are connected through a main transformer 110 kV side crossover 6.
In the embodiment, the main transformer 110 kv side lead framework 4 is erected near the main transformer 2, the suspension insulator string 41 is hung below the cross beam of the main transformer 110 kv side lead framework 4, the end fitting of the suspension insulator string 41 is respectively used for guiding the main transformer 110 kv side span wire 6 and the main transformer 110 kv side lead wire 5, the main transformer 110 kv side span wire 6 is connected with the 110 kv GIS pipe sleeve terminal 111, and the main transformer 110 kv side lead wire 5 is connected with the main transformer 110 kv sleeve terminal 21. Because the weight of the main transformer 110 kilovolt side lead 5 and the main transformer 110 kilovolt side jumper 6 is borne by the suspension insulator string 41 on the main transformer 110 kilovolt side lead framework 4, the long-term bearing tension of the main transformer 110 kilovolt sleeve terminal 21 and the 110 kilovolt GIS sleeve terminal 111 is greatly reduced, thereby reducing the oil leakage of the sleeve terminal caused by the damage of the tension to the sealing property between the sleeve terminal and the sleeve body and reducing the occurrence rate of safety accidents; in addition, the length of the 110 KV side overline 6 of the main transformer is short, the suspension insulator string 41 only needs to be hung on the 110 KV side lead framework 4 of the main transformer, corresponding hanging points and strain insulator strings do not need to be arranged on the distribution building 1, the structure is simpler and more reliable, conductor materials and corresponding installation material consumption are saved, and the later maintenance cost is low.
Specifically, the distribution building 1 includes 220 kv GIS chambers 12 and 110 kv GIS chambers 11, the 110 kv GIS sleeve terminal 111 is arranged outside the 110 kv GIS chambers 11, the 220 kv GIS chamber 12 is provided with 220 kv GIS sleeve terminal 121, and the 220 kv GIS sleeve terminal 121 is connected with the main transformer 220 kv sleeve terminal 22 through the 220 kv high-voltage line. The 220 KV high-voltage line comprises a main transformer 220 KV side overline 31, a main transformer 220 KV side lead 32, a 220 KV GIS side lead 33 and a 220 KV side lead 34, a main transformer 220 KV side lead framework 7 is further arranged near the main transformer 2, a first hanging point 13 is arranged on the outer side of the distribution building 1, and two ends of the main transformer 220 KV side overline 31 are respectively connected with the main transformer 220 KV side lead framework 7 and the first hanging point 13; the 220 KV side overline 31 of the main transformer is downwards led to a 220 KV GIS side lead 33 to be connected with a 220 KV GIS sleeve terminal 121; the 220 KV side overline 31 of the main transformer is connected with a 220 KV side lead of the main transformer and a 220 KV sleeve terminal of the main transformer; the main transformer 220 KV side jumper 31 and the main transformer 220 KV side lead are connected through a 220 KV side lead 34.
The suspension insulator string 41 of the present embodiment can satisfactorily withstand the load of the main transformer 110 kv side jumper 6 and the main transformer 110 kv side lead 5. The main transformer 2 is preferably an oil-immersed main transformer 2, a main transformer oil tank 21 is arranged in the oil-immersed main transformer 2, and the main transformer oil tank 21 can play a role in enhancing the insulation strength and heat dissipation in the main transformer 2. In order to ensure the safe electrified distance, the distance between the center line of the 110 KV side lead framework 4 of the main transformer and the center line of the main transformer oil tank 21 is 1.5-2 m, and the distance between the center line of the 220 KV side lead framework 7 of the main transformer and the center line of the main transformer oil tank 21 is not less than 4.5 m. The main transformer 220 KV side lead framework 7 is 3-7 m higher than the main transformer 110 KV side lead framework 4, so that a sufficient height difference is reserved between a main transformer 220 KV side span line and a main transformer 110 KV side span line 6, and a safety accident caused by the fact that maintenance personnel touch the main transformer 220 KV side span line above the main transformer when overhauling the main transformer 110 KV side lead framework 4 is avoided.
To sum up, implement the utility model discloses following beneficial effect has:
the utility model discloses an indoor transformer device of high reliability 220 kilovolt sets up main transformer 110 kilovolt side lead wire framework through setting up near main transformer to hang the insulator chain that dangles in the crossbeam below of main transformer 110 kilovolt side lead wire framework, dangle the terminal gold utensil of insulator chain and draw the main transformer 110 kilovolt side overline 6 to 110 kilovolt GIS pipe box terminal, and draw the main transformer 110 kilovolt side lead wire to main transformer 110 kilovolt sleeve pipe terminal, it has following advantage:
1. the weight of the 110 KV side lead of the main transformer and the 110 KV side overline 6 of the main transformer is borne by the suspension insulator string on the 110 KV side lead framework of the main transformer, the pulling force borne by the 110 KV sleeve terminal and the 110 KV GIS sleeve terminal for a long time is greatly reduced, the condition that the sleeve terminal leaks oil due to the damage of the pulling force to the sealing property between the sleeve terminal and the sleeve body is reduced, and the occurrence rate of safety accidents is reduced;
2. the main transformer 110 kilovolt side span line 6 is shorter in length, so that the conductor material and the corresponding installation material consumption are saved;
3. the suspension insulator string is hung on the 110 KV side lead framework of the main transformer, and the corresponding hanging point and the strain insulator string are not needed to be arranged on a distribution building, so that the structure is simpler, and the later maintenance cost is reduced.
The above disclosure is only a preferred embodiment of the present invention, and certainly should not be taken as limiting the scope of the invention, which is defined by the claims and their equivalents.
Claims (7)
1. A high-reliability 220 KV indoor power transformation device is characterized by comprising a distribution building and a main transformer, wherein the high-voltage end of the main transformer is connected with a 220 KV high-voltage line, after voltage reduction, the low-voltage end of the main transformer outputs a 110 KV power supply, the low-voltage end of the main transformer is provided with a main transformer 110 KV sleeve terminal, and the high-voltage end of the main transformer is provided with a main transformer 220 KV sleeve terminal connected with the 220 KV high-voltage line;
a main transformer 110 KV side lead framework is arranged near the main transformer, a suspension insulator string is arranged on the main transformer 110 KV side lead framework, the suspension insulator string and the main transformer 110 KV sleeve terminal are connected through a main transformer 110 KV side lead,
and 110 KV GIS pipe sleeve terminals are arranged outside the power distribution building, and the suspension insulator string and the 110 KV GIS pipe sleeve terminals are connected through a 110 KV side overline of a main transformer.
2. The highly reliable 220 kv indoor power transformation device according to claim 1, wherein the distribution building comprises a 220 kv GIS room and a 110 kv GIS room, the 110 kv GIS outdoor terminal is provided with the 110 kv GIS bushing terminal, the 220 kv GIS outdoor terminal is provided with the 220 kv GIS bushing terminal, and the 220 kv GIS bushing terminal is connected with the 220 kv bushing terminal of the main transformer through the 220 kv high-voltage wire.
3. The highly reliable 220 kv indoor transformation device according to claim 1, wherein the 220 kv high-voltage line comprises a main transformer 220 kv side jumper, a main transformer 220 kv side lead, a 220 kv GIS side lead, and a 220 kv side lead,
a main transformer 220 KV side lead framework is further arranged near the main transformer, a first hanging point is arranged on the outer side of the distribution building, and two ends of a main transformer 220 KV side span line are respectively connected with the main transformer 220 KV side lead framework and the first hanging point;
the 220 KV side overline lower lead 220 KV GIS side lead of the main transformer is connected with a 220 KV GIS sleeve terminal;
the 220 KV side overline down-lead main transformer 220 KV side lead of the main transformer is connected with a 220 KV sleeve terminal of the main transformer;
the main transformer 220 KV side overline and the main transformer 220 KV side lead are connected through a 220 KV side lead.
4. The highly reliable 220 kv indoor power transformation device according to claim 1, wherein the main transformer is an oil immersed main transformer, and a main transformer oil tank is disposed in the oil immersed main transformer.
5. The highly reliable 220 kV indoor substation device according to claim 4, wherein the distance between the center line of the lead frame on the 110 kV side of the main transformer and the center line of the oil tank of the main transformer is 1.5-2 m.
6. The highly reliable 220 kv indoor power transformation device of claim 4, wherein the distance between the centerline of the 220 kv side lead frame of the main transformer and the centerline of the tank of the main transformer is not less than 4.5 m.
7. The highly reliable 220 kv indoor power transformation device of claim 1, wherein the 220 kv side lead frame of the main transformer is 3-7 m higher than the 110 kv side lead frame of the main transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921029317.2U CN210273032U (en) | 2019-07-03 | 2019-07-03 | High-reliability 220 KV indoor power transformation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921029317.2U CN210273032U (en) | 2019-07-03 | 2019-07-03 | High-reliability 220 KV indoor power transformation device |
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| Publication Number | Publication Date |
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| CN210273032U true CN210273032U (en) | 2020-04-07 |
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| CN201921029317.2U Active CN210273032U (en) | 2019-07-03 | 2019-07-03 | High-reliability 220 KV indoor power transformation device |
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- 2019-07-03 CN CN201921029317.2U patent/CN210273032U/en active Active
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