evaluating the effect of connection plate thickness and stiffness on seismic response of high voltage current transformers

Lifelines play a vital role in the life of industrial and developed communities, and any failures in their proper function disrupts the activities and leads to great business interruption losses. among different groups of lifelines, the power industry is more important due to its widespread use. one of the key elements in the process of transmission and distribution of electric power in the networks are the substations. the study of recent earthquakes indicates that the vulnerability of equipment inside the substations are really noticeable (figure 1). one of the main problems in this area isthe lack of seismic design provisions for these elements and poor design assumptions.