Combined framework pillar for 500kV transformer substation and mounting method of combined framework pillar

Abstract

The invention provides a combined framework pillar for a 500kV transformer substation and a mounting method of the combined framework pillar. The combined framework pillar comprises a framework main connector and framework legs, the same ends of two opposite supporting parts are fixedly connected to form the herringbone framework main connector, a cross supporting part is fixedly connected between the two supporting parts, the framework legs are fixedly connected with the two supporting parts respectively, a framework transition connector is arranged between two opposite framework legs, an end connecting plate is fixedly connected at the top of the framework main connector, and a mounting through hole is formed in the end connecting plate. The mounting method mainly includes the steps: pouring and wrapping by the aid of concrete on the mounting portions of the framework legs of the tail ends of the combined framework pillar to form concrete protection boots. In an integrated framework for the 500kV transformer substation, the assembly efficiency of the integrated framework is improved, resistant-lateral rigidity, wind load resistant and anti-shake requirements of the integrated framework can be met, and safe and reliable running of the 500kV transformer substation is ensured.

Description

technical field [0001] The invention relates to a frame column, in particular to a combined frame column for a 500kV substation and an installation method thereof. Background technique [0002] The system scheme and electrical scheme at the beginning of the design of the 500kV substation need to consider the step-down operation of the 500kV substation in the current period. The step-down operation of the 220kV level is carried out in advance, and the final transition to the normal operation of the 500kV level is carried out. Before the operation of the 500kV substation, it is necessary to construct the cable tunnel according to the safe charged distance between the cables, and bury the cables in the station in the cable tunnel. area, which is not conducive to saving precious land resources; moreover, the engineering volume of cable tunnel construction is large, and the construction cost is high, resulting in an increase in the overall investment cost of the 500kV substation....

AI Technical Summary

Problems solved by technology

Before the operation of the 500kV substation, it is necessary to carry out the construction of the cable tunnel according to the safe charged distance between the cables, and bury the cables in the station in the cable tunnel, which will increase the floor area of ​​the cable laying, thereby compressing the surrounding wall of the station area area, which is not conducive to saving precious land resources; moreover, the engineering volume of cable tunnel construction is large and the construction cost is high, resulting in an increase in the overall investment cost of the 500kV substation

[0003] For 500kV substations built in high-altitude and high-seismic intensity areas, the construction difficulty of the integrated structure is greatly increased, and the construction cost is even higher. Moreover, the wind in high-altitude areas is usually relatively strong, which poses a greater threat to the safety of the integrated structure. In addition, the seismic force will also have a destructive effect on the safe operation of the integrated structure

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