Slave end framework column for 800kV convertor station alternating current filter united framework

Abstract

The invention provides a slave end framework column for an 800kV convertor station alternating current filter united framework. The slave end framework column is a three-legged framework and comprises a first supporting column (81) and two second supporting columns (84). A framework shaped like a Chinese character 'ren' is formed by the two second supporting columns (84). An end connecting plate (86) is formed at one end of the first supporting column (81). A main coupling part (88) is formed at one end of each second supporting column (84). The head of a connecting pin (87) penetrates the end connecting plate (86) and the main coupling parts (88) and connect the first supporting column (81) and the second supporting columns (84) into the three-legged framework. After being mounted in place, the slave end framework column has good stability and structural stiffness, and therefore the overall lateral stiffness of the 800kV convertor station alternating current filter united framework can be improved, and the overall wind load and earthquake resistance of the 800kV convertor station alternating current filter united framework is enhanced.

Description

technical field [0001] The invention relates to the structural design of the combined frame of the AC filter of the 800kV converter station, in particular to a secondary frame column used for the combined frame of the AC filter of the 800kV converter station. Background technique [0002] In the field of UHV DC transmission in electric power engineering, such as ±800kV converter station, it is necessary to implement the current 800kV power transmission according to the electrical layout in the station, and the wires in the station pass through the outgoing line frame, incoming line frame, and AC filter frame. [0003] However, both sides of the AC filter frame of the existing converter station need to be provided with frame end braces, resulting in a complex overall structure of the frame and a large amount of steel, which is not conducive to cost saving. In addition, the existing AC filter frame of the converter station mainly adopts the herringbone column scheme, which not...

AI Technical Summary

Problems solved by technology

[0003] However, both sides of the AC filter frame of the existing converter station need to be equipped with frame end supports, resulting in a complex overall structure of the frame and a large amount of steel, which is not conducive to saving costs

In addition, the existing AC filter frame of the converter station mainly adopts the herringbone column scheme, which not only increases the overall steel consumption of the frame, thereby increasing the construction cost of the frame, but also occupies a relatively small area of ​​the frame of the AC filter group. large, resulting in unnecessary waste of land resources

Especially in areas with strong winds or high-intensity earthquakes, there are still certain safety hazards in the lateral stiffness, wind load resistance and seismic performance of the AC filter frame of the converter station with this structure.

Images