Three-grade seismic fortification method for electrical equipment

Abstract

The invention provides a three-grade seismic fortification method for electrical equipment. The method comprises the following steps of: dividing a seismic fortification level and defining acceleration peak values of different seismic inputs; determining a seismic fortification target; and checking the seismic capacity of the electrical equipment. On the basis of the self seismic capacity of the electrical equipment, a unified seismic fortification level is preset, so the fortification levels of an equipment manufacturer, engineering design and an owner are accordant, and the three-grade seismic fortification method for the electrical equipment has the characteristics of clear concept, convenience for operation and the like; moreover, according to the current economic and social development level of China, on the basis of a check criteria in the seismic fortification level provided by the invention, seismic requirements of the electrical equipment of China can be remarkably improved, great practical significance is provided for guarantee of the seismic reliability of the electrical equipment under various types of seismic action; and the method is applicable to seismic design and check of various kinds of electrical equipment in a voltage grade of 35 kV or over, and can be reference for the seismic design and check of other types of equipment.

Description

technical field [0001] The invention belongs to the field of anti-seismic equipment, and in particular relates to a three-level anti-seismic fortification method for electrical equipment. Background technique [0002] The seismic assessment standards and fortification goals of electrical equipment in my country's existing codes mainly refer to the building's seismic design codes, and are set according to the fortification intensity of the project location. See Attached Table 1 for the peak acceleration value of electrical equipment seismic assessment. [0003] Schedule 1 [0004] [0005] When the test piece is not assessed together with the support structure, it should be multiplied by the dynamic amplification factor. For example, when the seismic assessment of the transformer bushing in the IX degree area without the transformer body is carried out, the acceleration peak value of the artificially synthesized seismic wave or the real earthquake record is 0.80g, while ...

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Problems solved by technology

If the seismic assessment of electrical equipment is carried out according to the fortification requirements of the site fortification intensity in the construction field, it will often cause the equipment manufacturers to be unable to adapt to the seismic fortification requirements of different regions, which may cause the seismic performance of the equipment to fail to meet the fortification requirements

[0010] In addition, the seismic response spectrum used in the seismic fortification of electrical equipment is completely copied from the building's seismic design code, and different sites have different response spectra, which also leads to poor applicability of seismic input for electrical equipment seismic assessment

In the actual seismic design of electrical equipment, the seismic assessment of electrical equipment by engineering design units and equipment manufacturers is often out of touch. Engineering design units often set requirements for the seismic capacity of electrical equipment. Whether the equipment can meet the seismic requirements is the responsibility of the manufacturer. Responsibility; and the manufacturer is not very familiar with the fortification requirements and site characteristics of the project location, which leads to the failure of the earthquake resistance assessment of electrical equipment

[0011] Due to the lack of specific regulations on the seismic assessment of electrical equipment in my country and the lack of detailed and targeted assessment rules and methods, there are many misunderstandings about the seismic assessment of electrical equipment, and the applicability and operability are poor; in addition, the current The earthquake resistance assessment level of electrical equipment is still lower than that of foreign countries

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