Combined lattice beam for integrated framework of 500kV transformer substation

Abstract

The invention provides a combined lattice beam for an integrated framework of a 500kV transformer substation. The combined lattice beam comprises a first main beam, a second main beam, a third main beam, a first connecting plate and a third supporting part, the first connecting plate is respectively and fixedly connected on the first main beam, the second main beam and the third main beam, the first connecting plate is fixedly connected between the first main beam and the second main beam, between the second main beam and the third main beam and between the first main beam and the third main beam respectively through a third supporting part, and the first main beam, the second main beam and the third main beam collectively form a triangular structure. The combined lattice beam has high stability, high resistant-lateral rigidity, wind load resistance and anti-shake performance, the resistant-lateral rigidity, the wind load resistance and the anti-shake performance of the integrated framework can be greatly improved when the combined lattice beam is applied to the 500kV transformer substation, and safe and reliable running of the 500kV transformer substation is ensured.

Description

technical field [0001] The invention relates to a lattice beam, in particular to a combined lattice beam used for the integrated frame of a 500kV substation. 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. [0...

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

Images