High voltage puffer circuit breaker and circuit breaker unit having such a puffer circuit breaker

A circuit breaker and high-voltage technology, which is applied to disconnect current in HVDC systems. Pneumatic circuit breakers can solve problems such as limited control tasks in the field of high-voltage systems and circuit breaker units.

Active Publication Date: 2019-07-16
HITACHI ENERGY SWITZERLAND AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Representatives of types 1 and 2 have in common that they are limited in their focus on mastery tasks

Method used

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  • High voltage puffer circuit breaker and circuit breaker unit having such a puffer circuit breaker
  • High voltage puffer circuit breaker and circuit breaker unit having such a puffer circuit breaker
  • High voltage puffer circuit breaker and circuit breaker unit having such a puffer circuit breaker

Examples

Experimental program
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Embodiment Construction

[0073] exist figure 1 In the first embodiment of the puffer circuit breaker 1, the first contact 2 is in its first position. The gas-insulated high-voltage puffer circuit breaker 1 has a puffer unit 3 with a piston 4 which is movably arranged in a puffer cylinder 5 such that a puffer volume 6 is defined. The first contact piece 2 is arranged movably relative to the second tulip-shaped contact piece 7 so as to establish a current path. Since the electrical connection of the second contact 7 is known to those skilled in the art, in figure 1 and later not shown. The first contact 2 is connected to the drive 8 via the piston rod 9 and the tie rod 10 , forming a gearless and rigid mechanical chain along the switching axis 11 .

[0074] The puffer unit 3 comprises nozzles 12 which extend around a switching axis 11 for laterally delimiting an arcing zone 13 of the puffer circuit breaker 1 .

[0075] The compressed air volume 6 is fluidically connected to the nozzle 12 and the arc...

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PUM

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Abstract

A gas-insulated high-voltage puffer circuit breaker (1) comprises a puffer unit (3) having a movable piston (4) moving in a puffer cylinder (5) and defining a puffer volume (6). The piston (4) and the first contact (2) are attached to the piston rod (9). The arc in the arc zone (13) can be extinguished when the first contact (2) moves from the first position to the second position. The plenum volume (6) is fluidly connected to the gas nozzle (12) via the gas channel (14), such that the plenum volume (6) includes the gas channel (14) and a part (15) of the plenum cylinder (5). The gas channel (14) is arranged radially outside the compressor (5), between the cylinder wall (17) defining the compressor cylinder (5) and the wall structure (18) of the compressor unit (3).

Description

technical field [0001] The present invention relates to a puffer circuit breaker for use in a gas insulated switchgear, and a circuit breaker unit comprising such a puffer circuit breaker. Furthermore, the invention relates to the use of such a puffer circuit breaker for breaking current in high voltage systems, in particular HVDC systems. Background technique [0002] In the prior art literature, various types of puffer circuit breakers are known. [0003] FR2733086A1 is an example of a puffer circuit breaker having first and second contacts forming a separable breaking current path separate from a separable rated current path. The drive is connected to the compression cylinder such that the compression cylinder is movable relative to the fixed piston to supply a quantity of stored gas in the compression volume within the compression cylinder to the nozzle. [0004] A representative of the second type of puffer circuit breaker is known from FR2352386A1. The general idea ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H33/90H01H33/91H01H1/38
CPCH01H1/385H01H33/90H01H33/91H01H33/53H01H33/666H01H33/6661H01H33/7023H01H33/882
Inventor M·布乔特泽克A·加利发洛斯P·斯姆卡E·帕瑙斯N·兰詹
Owner HITACHI ENERGY SWITZERLAND AG
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