TY - JOUR
T1 - Optimized design of electric field grading systems in 115 kV non-ceramic insulators
AU - Domínguez, D. Cruz
AU - Espino-Cortés, F. P.
AU - Gómez, P.
PY - 2013
Y1 - 2013
N2 - In this work two stress grading options for 115 kV non-ceramic suspension insulators are analyzed by means of 2D and 3D simulations. Both options were optimized in order to compare the maximum reduction that can be obtained on the electric field at the surface of the insulator. In the first option the shape and permittivity value of the housing material next to the energized end were the optimized parameters. For the second option, the installation of a corona ring, the position and dimensions of the ring were optimized. Electric field simulations were performed with the finite element method (FEM) while for the optimization process different functions of the MATLAB optimization toolbox were used. The optimization was performed with 2D FEM simulations and the optimal designs were then used on 3D models, in order to verify that these designs remain as the best option. According to the results, it was found that the use of a corona ring in 115 kV lines produces the maximum reduction of electric field as long as it is installed in the optimal position. A modification of the housing profile next to the energized end will also produce a significant reduction on the maximum electric field on 115 kV non-ceramic insulators.
AB - In this work two stress grading options for 115 kV non-ceramic suspension insulators are analyzed by means of 2D and 3D simulations. Both options were optimized in order to compare the maximum reduction that can be obtained on the electric field at the surface of the insulator. In the first option the shape and permittivity value of the housing material next to the energized end were the optimized parameters. For the second option, the installation of a corona ring, the position and dimensions of the ring were optimized. Electric field simulations were performed with the finite element method (FEM) while for the optimization process different functions of the MATLAB optimization toolbox were used. The optimization was performed with 2D FEM simulations and the optimal designs were then used on 3D models, in order to verify that these designs remain as the best option. According to the results, it was found that the use of a corona ring in 115 kV lines produces the maximum reduction of electric field as long as it is installed in the optimal position. A modification of the housing profile next to the energized end will also produce a significant reduction on the maximum electric field on 115 kV non-ceramic insulators.
KW - Electric field
KW - corona ring
KW - non-ceramic insulator
KW - optimization
UR - http://www.scopus.com/inward/record.url?scp=84873650440&partnerID=8YFLogxK
U2 - 10.1109/TDEI.2013.6451342
DO - 10.1109/TDEI.2013.6451342
M3 - Artículo
SN - 1070-9878
VL - 20
SP - 63
EP - 70
JO - IEEE Transactions on Dielectrics and Electrical Insulation
JF - IEEE Transactions on Dielectrics and Electrical Insulation
IS - 1
M1 - 6451342
ER -