Earthquake simulation vibration test method and device for transformer equipment

Abstract

The invention provides an earthquake simulation vibration test method and device for transformer equipment. The method comprises the steps that placing a tested piece on an earthquake simulation vibration table; arranging a measuring instrument on the tested piece, and acquiring a test measurement value based on the measuring instrument in the test process; and carrying out calculating based on the test measurement value to obtain a transformer anti-seismic property evaluation result corresponding to the tested piece. The tested piece comprises a transformer model pre-manufactured based on a to-be-tested transformer prototype or a sleeve in the to-be-tested transformer prototype. The invention provides a test approach for a large transformer without earthquake simulation vibration table test capability, and provides technical support for earthquake resistance optimization, earthquake resistance design and earthquake resistance evaluation of large transformer equipment.

Description

technical field [0001] The invention relates to the field of transformer testing, in particular to an earthquake simulation vibration test method and device for transformer equipment. Background technique [0002] The survey of earthquake damage shows that electrical equipment, especially electrical equipment made of ceramic materials, is highly vulnerable to earthquakes. Transformer equipment has the characteristics of large volume and weight, and the bushings are mostly made of ceramic materials. Under the action of earthquakes, they can withstand large seismic forces, which can easily cause damage to transformer bushings or cause large displacements of equipment and loss of electrical functions. [0003] The transformer is the core equipment in the converter station, and it is an electrical equipment with a large mass and a low center of gravity. Under the action of earthquake, the damage of transformer equipment is mainly manifested as the damage of the bushing installe...

AI Technical Summary

Problems solved by technology

Bushing-type electrical equipment is highly vulnerable to earthquakes. Installing it on a transformer, and the transformer body has a dynamic amplification effect on the seismic response of the bushing, which will further threaten the safety of the bushing.

In addition, the weight of a large-scale transformer is as high as several hundred tons, which is far beyond the test capability of the existing earthquake simulation shaking table. If only the bushing of the vulnerable parts of the transformer in the earthquake is subjected to the shaking table test, the existing specifications lack a systematic test method. For example, for UHV equipment, there is a lack of technical requirements for bushing installation during the test process, resulting in unclear seismic dynamic amplification effect of the transformer body on the bushing, etc., which affects the accuracy of the transformer seismic performance evaluation results

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