GIS (Gas Insulated Swtichgear) high-voltage box of electric locomotive

Abstract

The invention discloses a GIS high-voltage box of an electric locomotive. The high-voltage box comprises high-voltage disconnecting switches, a vacuum circuit breaker 4, a current transformer 5, a voltage transformer 6 and a grounding switch 7 which are arranged in a middle seal box 1c, and the internal of the middle seal box 1c is filled with sulfur hexafluoride gas; a cable inlet end 8 and a cable outlet end 9 are arranged in the middle seal box 1c; the high-voltage disconnecting switches are electrically connected with a pantograph via the cable inlet end 8; the current transformer 5 is electrically connected with an internal circuit of the electric locomotive via the cable outlet end 9; a vacuum circuit breaker operation mechanism 10 is connected with the vacuum circuit breaker 4; a grounding switch operating mechanism 11 is connected with the grounding switch 7; and high-voltage disconnecting switch operating mechanisms 12 are respectively connected with the high-voltage disconnecting switches. The GIS high-voltage box of the electric locomotive can effectively avoid ground discharge of high-voltage components, reduce the space, which is occupied by the high-voltage components, at the top of the electric locomotive, and improve the mounting and dismounting efficiency.

Description

technical field [0001] The invention relates to the field of electric locomotives, in particular to an electric locomotive GIS (Gas Insulated Switchgear, gas insulated metal-enclosed switchgear) high voltage box. Background technique [0002] An electric locomotive generally refers to a vehicle that uses a pantograph to obtain electric energy from the catenary and converts this electric energy into traction force. For example, electric trains, EMUs, and high-speed rails in the prior art all belong to electric locomotives. [0003] In the existing technology, the electric energy obtained by the pantograph needs to pass through high-voltage devices such as high-voltage isolating switches, voltage transformers, vacuum circuit breakers, grounding switches, and current transformers, and then enter the interior of the electric locomotive; There will be no electrical interference between them, so these high-voltage devices are installed on the top of the electric locomotive, and a ...

AI Technical Summary

Problems solved by technology

However, these high-voltage devices in the prior art are easily affected by weather conditions such as rain, snow, ice, smog, etc., and discharges to the ground frequently occur; at the same time, because the predetermined electrical safety distance between these high-voltage devices in the prior art Therefore, it needs to occupy a large space, and the space on the top of the electric locomotive is very small, which makes the installation and removal of these high-voltage devices very inconvenient

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