Study on Ground Motion Input Used in Seismic Test of High Voltage Pillar Type Electrical Equipments

Abstract eng:
With the continuous improvement of voltage levels, the high voltage pillar type electrical equipments are characterized in high, soft, heavy, and so on, also the equipments nonlinear characteristic of seismic action are obvious. Resonance wave and seismic wave are commonly used in the seismic test of high voltage electrical equipments. But for equipments which have nonlinear characteristics significantly, the equipments fundamental frequency are decreasing under earthquake, the equipment fundamental frequency and resonance wave frequency can not resonant during the seismic test, it is very necessary to study the applicability and limiting condition of resonance wave used in high voltage electrical equipments seismic test. In addition, the same equipment has different response under different seismic wave, in some cases, even has a big difference. Therefore, the reasonable seismic input selection determines the reasonableness of electrical equipments seismic characteristic evaluation results. By theoretical analysis and shaking table test of earthquake simulation, this paper studied the applicable condition of the resonance wave used in seismic test of high voltage electrical equipments, combined with the characteristics of high voltage electrical equipments, earthquake acceleration response spectrum which suitable for high voltage electrical equipments was proposed, and the shaking table test of earthquake simulation experimental verification was carried out, all these research provide the basis for the seismic test and seismic evaluation of high voltage pillar type electrical equipments.

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