A solid-sealed pole and circuit breaker

Abstract

The invention relates to a solid-sealed pole and a circuit breaker. The solid-sealed pole includes a solid-sealed shell, and the solid-sealed shell is equipped with a static terminal, a vacuum interrupter and a moving terminal. The vacuum interrupter has a static contact and a movable contact. It is used for transmission connection with the operating mechanism. The static end contact is a movable contact that can move along the opening and closing direction. The static end contact is equipped with a static end conductive rod that is electrically connected to the static end outlet terminal. The static end conductive rod is connected There is a connecting rod, and the outlet terminal at the static end is provided with a through hole that matches the connecting rod. The connecting rod is inserted into the through hole and the end away from the conductive rod at the static end is connected to the limit block installed on the outgoing terminal at the static end through the through hole. An elastic buffer is provided between them. When the contact at the moving end hits the contact at the static end, the conductive rod at the static end moves to squeeze the elastic buffer, and the elastic buffer deforms to convert a part of the kinetic energy into elastic potential energy and store it, thereby buffering the interrupter to a large extent received the shock.

Description

technical field [0001] The invention relates to a solid-sealed pole and a circuit breaker. Background technique [0002] The smart grid is an important direction for the development of the power industry. With the development of the smart grid, the traditional AC grid has been difficult to meet the requirements of the rapid response of the renewable energy generation and load random fluctuations to the grid. The research combines reliability, security and stability. And economic direct current transmission network has huge market value and economic value. The use of DC transmission and distribution network can not only interconnect renewable energy and traditional energy in a wide area, fully improve the utilization rate of renewable energy, but also reduce line loss, increase transmission capacity and distance, and solve the thermal stability problem of synchronous operation of the system. [0003] The DC circuit breaker is the core equipment used to ensure the stable oper...

AI Technical Summary

Problems solved by technology

However, when it is directly applied to DC circuit breakers, due to the requirement of stronger arc extinguishing ability, the opening and closing speed of the moving and static contacts has higher requirements, and the operating work of the operating mechanism will be greater, and it will be possible There will be damage to the moving and static contacts. Therefore, the current solid-sealed poles cannot meet the needs of DC circuit breakers.

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