CN218275797U - Small-size heavy current environmental protection composite apparatus - Google Patents
Small-size heavy current environmental protection composite apparatus Download PDFInfo
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- CN218275797U CN218275797U CN202221393821.2U CN202221393821U CN218275797U CN 218275797 U CN218275797 U CN 218275797U CN 202221393821 U CN202221393821 U CN 202221393821U CN 218275797 U CN218275797 U CN 218275797U
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Abstract
The utility model belongs to the technical field of power switching equipment, in particular to small-size heavy current environmental protection composite apparatus. The small-sized large-current environment-friendly combined electrical apparatus comprises an underframe, and is characterized in that: a main bus is arranged at one end of the underframe and is connected with an isolating switch, the upper end of the isolating switch is connected with a quick grounding switch, one side of the lower end of the isolating switch is connected with a grounding switch, and the lower end of the isolating switch is additionally connected with a grounding switchOne side of the breaker is connected with a breaker, a current transformer is connected above the end part of the breaker, and a sleeve is arranged above the current transformer. The utility model has the advantages that: the insulation distance is reduced on the premise of the same insulation margin, the size of the circuit breaker is reduced, and the other air chambers adopt SF 6 、N 2 As an insulating gas, thereby reducing the amount of greenhouse gases used.
Description
Technical Field
The utility model belongs to the technical field of power switching equipment, in particular to small-size heavy current environmental protection composite apparatus.
Background
With the development of a power system, the capacity of a power grid and the power load are continuously increased, particularly in a 35kV system, the current load is obviously increased, part of the load is more than 3150A, and the original 3150A product cannot meet the use requirement, so that a high-current product is urgently needed. The ever-increasing land acquisition cost of the transformer substation urgently needs a miniaturized product. And the intellectualization is needed to be realized, and the operation quality of the power grid is ensured. The most conventional switch equipment of a 35kV indoor power distribution system is a switch cabinet, but the air-insulated switch cabinet has more obvious defects, and because the protection grade is insufficient, the contact corrosion causes abnormal temperature rise, and dust enters the switch cabinet to cause more faults such as discharge short circuit and the like. GIS is widely accepted by users due to excellent operation stability, and the main defect of GIS is SF 6 The gas is used in large amount, and the gas is greenhouse gas with greenhouse effect of CO 2 2.35 ten thousand times of the total amount of the sulfur, has great harm to the environment, and reduces SF for responding the national carbon neutralization target 6 The combined electrical equipment of (2) is imperative.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a remedy prior art not enough, provide a low in production cost, the feature of environmental protection is good, application scope is wide, the reliability is high, the convenient small-size heavy current environmental protection composite apparatus of installation and debugging.
The invention is realized by the following technical scheme:
the small-sized high-current environment-friendly combined electrical appliance comprises an underframe, and is characterized in that: a main bus is installed at one end of the underframe and is connected with a disconnecting switch, a quick grounding switch is connected with the upper end of the disconnecting switch, one side of the lower end of the disconnecting switch is connected with the grounding switch, the other side of the lower end of the disconnecting switch is connected with a circuit breaker, a current transformer is connected above the end part of the circuit breaker, and a sleeve is installed above the current transformer.
The main bus is connected with the isolating switch through the branch bus.
SF is filled in the air chambers of the main bus, the branch bus, the isolating switch, the quick grounding switch, the current transformer and the sleeve 6 、N 2 And (4) mixing the gases.
The SF 6 、N 2 The volume ratio of the mixed gas is 3:7.
SF is filled in the air chamber of the circuit breaker 6 A gas.
And the end part of the underframe is provided with a control cubicle.
The beneficial effects of the utility model are that: the insulation distance is reduced on the premise of the same insulation margin, the size of the circuit breaker is reduced, and the other air chambers adopt SF 6 、N 2 As an insulating gas, thereby reducing the amount of greenhouse gases used.
Drawings
The present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic structural view of the present invention;
in the figure, 1 chassis, 2 main buses, 3 isolating switches, 4 quick grounding switches, 5 grounding switches, 6 circuit breakers, 7 current transformers, 8 sleeves, 9 branch buses and 10 bus control cabinets are arranged.
Detailed Description
The attached drawing is a concrete embodiment of the utility model. This embodiment includes chassis 1, 1 one end installation main bus 2 of chassis, and main bus 2 connects isolator 3, and isolator 3 upper end is connected quick earthing switch 4, and earthing switch 5 is connected to 3 lower extreme one sides of isolator, and isolator 3 lower extreme opposite side is connected circuit breaker 6, and current transformer 7 is connected to 6 tip tops of circuit breaker, and current transformer 7 top installation sleeve pipe 8. The main bus bar 2 is connected with the isolation switch 3 through a branch bus bar 9. A main bus 2, a branch bus 9, a disconnecting switch 3, a quick grounding switch 4, a grounding switch 5, a current transformer 7 andSF is filled in the air chamber of the sleeve 8 6 、N 2 Mixing the gas. SF 6 、N 2 The volume ratio of the mixed gas is 3:7. SF is filled in the air chamber of the breaker 6 6 A gas. The end part of the underframe 1 is provided with a control cubicle 10.
Adopt the utility model discloses a small-size heavy current environmental protection combined electrical apparatus, 6 tops of circuit breaker and the right-hand components and parts such as being qualified for the next round of competitions connect gradually current transformer 7, isolator 3, earthing switch 5, voltage transformer, arrester, main bus 2, business turn over line sleeve pipe 8 or cable, and outside configuration converges accuse cabinet 10, and integral erection forms one set of complete combined electrical apparatus interval on a chassis 1, connects through the main bus between the different intervals, realizes various wiring forms. The novel multi-contact spring contact finger is adopted for connecting the through-flow point to replace the original self-operated contact, the size of the contact finger is reduced compared with the original external self-operated contact because the contact finger is arranged in the cylinder, and cast aluminum and cast copper are adopted as parts and are designed into a hollow structure, so that the heat dissipation performance is improved, the size is reduced, and the through-flow capacity is improved to 4000A. The current transformer 7 can be configured with a large-diameter structure, the overall size of the equipment is not affected, and the requirement of a TPY coil can be met. In the aspect of insulating gas, the circuit breaker 6 can only adopt SF because of the need of arc extinction 6 However, the electric field of the breaker 6 is optimized, the insulation distance is reduced on the premise of the same insulation margin, the diameter of the shell of the breaker 6 is reduced by 22%, the volume is reduced by nearly 40%, namely the amount of greenhouse gas used by the breaker 6 is reduced by 40%; the other air chambers adopt SF 6 +N 2 As the insulating gas, the mixing ratio thereof was 3:7, reducing the greenhouse gas consumption by 70 percent, and reducing the greenhouse gas consumption by more than 60 percent through total calculation.
Claims (6)
1. The utility model provides a small-size heavy current environmental protection composite apparatus, includes chassis (1), characterized by: main bus (2) are installed to chassis (1) one end, and isolator (3) are connected in main bus (2), and quick earthing switch (4) are connected to isolator (3) upper end, and earthing switch (5) are connected to isolator (3) lower extreme one side, and circuit breaker (6) are connected to isolator (3) lower extreme opposite side, and current transformer (7) are connected to circuit breaker (6) tip top, and current transformer (7) top installation sleeve pipe (8).
2. The small-sized large-current environment-friendly combined electrical apparatus as claimed in claim 1, wherein: the main bus (2) is connected with the isolating switch (3) through a branch bus (9).
3. The small-sized high-current environment-friendly combined electrical apparatus as claimed in claim 2, wherein: SF (sulfur hexafluoride) is filled in air chambers of the main bus (2), the branch bus (9), the isolating switch (3), the quick grounding switch (4), the grounding switch (5), the current transformer (7) and the sleeve (8) 6 、N 2 And (4) mixing the gases.
4. A small-sized high-current environment-friendly combined electrical apparatus according to claim 3, wherein: the SF 6 、N 2 The volume ratio of the mixed gas is 3:7.
5. A small-sized high-current environment-friendly combined electrical apparatus as claimed in claim 1, wherein: SF is filled in the air chamber of the breaker (6) 6 A gas.
6. The small-sized large-current environment-friendly combined electrical apparatus as claimed in claim 1, wherein: the end part of the underframe (1) is provided with a control cubicle (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221393821.2U CN218275797U (en) | 2022-06-07 | 2022-06-07 | Small-size heavy current environmental protection composite apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221393821.2U CN218275797U (en) | 2022-06-07 | 2022-06-07 | Small-size heavy current environmental protection composite apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218275797U true CN218275797U (en) | 2023-01-10 |
Family
ID=84756925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221393821.2U Active CN218275797U (en) | 2022-06-07 | 2022-06-07 | Small-size heavy current environmental protection composite apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218275797U (en) |
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2022
- 2022-06-07 CN CN202221393821.2U patent/CN218275797U/en active Active
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