evaluating the effect of supporting structure lateral stiffness on seismic response of high voltage current transformer

Lifelines are the facilities that the life in industrial and advanced societies is possible only by ensuring their appropriate and permanent operation and functioning. one of the most important lifelines is electrical power equipment which considering the effects of recent earthquakes in the world, high voltage current transformer, due to limitation of the materials used tomanufacture the porcelain insulator part, are the weak and vulnerable parts of the electrical power equipment in earthquakes (figure 1).