A ground knife static contact fitting for low-end valve hall of 800kv converter station

Abstract

The invention relates to a ground knife static contact armour clamp used for a 800kV convertor station low end valve hall. The armour clamp comprises an anticorona ball formed by upper and lower hemispheres. One side port of the anticorona ball is provided with a lead fixing armour clamp and another side port is provided with leading-out discharging equipment. The lower hemisphere is provided with a bottom opening which passes through a supporting column insulator and the upper hemisphere is provided with a top opening which passes through a pipe bus armour clamp. The pipe bus armour clamp is a pair of arched half rings. The lead fixing armour clamp comprises an over-current plate and an independent lead wire clamp. A sphere rod fixing chassis comprises a T rack body. A bottom end of the T rack body is connected with the supporting column insulator, a top end is connected with the pipe bus armour clamp through a sphere twisting component and a side end is connected with the over-current plate of the lead fixing armour clamp. A static contact supporting frame is connected with a flange plate and the ground knife static contact. A large port of the ground knife static contact is placed in a side port of the anticorona ball. One end of a current carrying lead forms over-current welding with one cable in a pipe bus clamped in the pipe bus armour clamp and the other end forms the over-current welding with the over-current plate of the lead fixing armour clamp.

Description

technical field [0001] The invention relates to an electric power fitting, in particular to a ground knife static contact fitting for a low-end valve hall of an 800kV converter station. Background technique [0002] At present, my country has become a major DC power transmission country with the most DC projects in operation and under construction, the largest capacity and the longest lines in the world. The converter station is an important part of the DC transmission project. The valve hall of the converter station is a closed space. The valve hall is equipped with important equipment such as valve towers, bushings, and voltage transformers. The conversion of AC and DC is also in the valve hall. Therefore, corona and radio interference in the valve hall are particularly serious. At the same time, due to the limited space in the valve hall, the spatial structure of the existing fittings can no longer meet the corresponding space requirements. Therefore, in the design proce...

AI Technical Summary

Problems solved by technology

The converter station is an important part of the DC transmission project. The valve hall of the converter station is a closed space. The valve hall is equipped with important equipment such as valve towers, bushings, and voltage transformers. The conversion of AC and DC is also in the valve hall. Therefore, the phenomenon of corona and radio interference in the valve hall is particularly serious. At the same time, due to the limited space of the valve hall, the space structure of the existing fittings can no longer meet the corresponding space requirements.

Images