Rigidity-adjustable energy dissipation and damping support for extra-high voltage transformation equipment and application thereof

Abstract

The invention relates to an energy-dissipating and shock-absorbing support for ultra-high voltage substation equipment with adjustable stiffness and its application. The support is a lattice support, including a support column, a transverse rod and a diagonal rod, and the diagonal rod is a rod with adjustable stiffness. Components; the coupled UHV equipment is placed on the top of the support, and the stiffness of the diagonal rods of the support is adjusted to keep the coupled UHV equipment vibrating in the same phase during the earthquake. Compared with the prior art, the present invention does not change the overall arrangement of the substation equipment, does not increase the displacement of the top of the equipment, and does not adversely affect the electrical performance of the equipment. Energy-dissipating and shock-absorbing devices are installed on the poles, so that different types of equipment on each support can maintain the same phase vibration during the earthquake, and the seismic response is also greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of ultra-high voltage power transformation equipment, and in particular relates to an energy-dissipating and shock-absorbing support for ultra-high voltage power transformation equipment with adjustable stiffness. Background technique [0002] With the development of my country's power transmission and transformation projects in the direction of high voltage, ultra-high voltage and ultra-high voltage, various electrical equipment in UHV substations and DC converter stations, such as isolating switches, lightning arresters, post insulators, bypass switches, capacitors, and voltage mutual inductance Due to the requirement of insulation from the ground, these devices are usually installed on lattice supports, showing the characteristics of high, large and flexible structures. The installation brackets of substations and converter stations located in earthquake-resistant areas are usually made of section steel an...

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Problems solved by technology

Moreover, this patent only has two main bracket materials arranged in parallel longitudinally. The shock absorber can only play a shock absorbing role in the plane where the two bracket main materials are located, and cannot play a shock absorption function outside the plane where the two bracket main materials are located.

Moreover, the bracket rigidity of this patent is fixed, and the natural vibration frequency of the equipment on it cannot be changed. It is difficult to control the interaction between the coupled substation equipment in the earthquake engineering process, and the effect of the present invention cannot be achieved.

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