中文摘要：

CAO Yun-dong is born in Shenyang in 1963. He got a doctor degree of electric ap- paratus in Shenyang University of Technolo- gy lying in Shenyang of Liaoning province in China in 2001. His special field is modern e- lectric apparatus design principles and application. E-mail： Caoyundong@ hotmail, corn Tel number： 86 24-25496668 LI Jing is born in Harbin in 1977. She got a master degree of high voltage and insulation materials in Harbin University of Science and Technology lying in Harbin of Heilongjiang province in China in 2004. Her special field is gas discharge and simulation. E-mail.. Lijing_ harbin@ hotmaill.com Tel number.. 86 24- 25494589. LIU Xiao-ming is born in Dandong in 1968. She got a doctor degree of electric apparatus in Shenyang University of Technology lying in Shenyang of Liaoning province in China in 2003. Her special field is theoretical study on modern high voltage electric apparatus. E- mail： Liuxiaoming@ hotmail.com; Tel number： 86-24-25496906.