TY - JFULL AU - M. Nageswara Rao and V. S. N. K. Chaitanya and P. Pratyusha PY - 2019/6/ TI - Design and Analysis of Extra High Voltage Non-Ceramic Insulator by Finite Element Method T2 - International Journal of Electrical and Computer Engineering SP - 284 EP - 289 VL - 13 SN - 1307-6892 UR - https://publications.waset.org/pdf/10010343 PU - World Academy of Science, Engineering and Technology NX - Open Science Index 149, 2019 N2 - High voltage insulator has to withstand sever electrical stresses. Higher electrical stresses lead to erosion of the insulator surface. Degradation of insulating properties leads to flashover and in some extreme cases it may cause to puncture. For analyzing these electrical stresses and implement necessary actions to diminish the electrical stresses, numerical methods are best. By minimizing the electrical stresses, reliability of the power system will improve. In this paper electric field intensity at critical regions of 400 kV silicone composite insulator is analyzed using finite element method. Insulator is designed using FEMM-2D software package. Electric Field Analysis (EFA) results are analyzed for five cases i.e., only insulator, insulator with two sides arcing horn, High Voltage (HV) end grading ring, grading ring-arcing horn arrangement and two sides grading ring. These EFA results recommended that two sides grading ring is better for minimization of electrical stresses and improving life span of insulator. ER -