TY - GEN
T1 - Optimization of electric field grading systems in non-ceramic insulators
AU - Domínguez, D. Cruz
AU - Espino-Cortés, F. P.
AU - Gómez, P.
PY - 2011
Y1 - 2011
N2 - In this work two electrical stress grading techniques for non-ceramic insulators are analyzed. In both techniques some parameters were optimized for a 115 kV non-ceramic insulator. Electric field simulations were performed with finite element method while, for the optimization process, different functions of the MATLAB optimization toolbox were used. In the first case the optimized parameters were the relative permittivity of the material and the geometry of insulator on the energized side. The simulations were made under power frequency and under normalized lightning impulse. Modification of the shape next to the energized side consists of changing the inclination angle of the housing material. Furthermore, the corona ring position is optimized on the energized side of the non-ceramic insulator for comparison with the aforementioned method. According to the results, it was found that there are geometric parameters and material properties that minimize the value for the maximum electric field along the insulator surface.
AB - In this work two electrical stress grading techniques for non-ceramic insulators are analyzed. In both techniques some parameters were optimized for a 115 kV non-ceramic insulator. Electric field simulations were performed with finite element method while, for the optimization process, different functions of the MATLAB optimization toolbox were used. In the first case the optimized parameters were the relative permittivity of the material and the geometry of insulator on the energized side. The simulations were made under power frequency and under normalized lightning impulse. Modification of the shape next to the energized side consists of changing the inclination angle of the housing material. Furthermore, the corona ring position is optimized on the energized side of the non-ceramic insulator for comparison with the aforementioned method. According to the results, it was found that there are geometric parameters and material properties that minimize the value for the maximum electric field along the insulator surface.
KW - Dielectric permittivity
KW - electric field
KW - non-ceramic insulator
KW - optimization
UR - http://www.scopus.com/inward/record.url?scp=80052699299&partnerID=8YFLogxK
U2 - 10.1109/EIC.2011.5996152
DO - 10.1109/EIC.2011.5996152
M3 - Contribución a la conferencia
AN - SCOPUS:80052699299
SN - 9781457702785
T3 - 2011 Electrical Insulation Conference, EIC 2011
SP - 231
EP - 234
BT - 2011 Electrical Insulation Conference, EIC 2011
T2 - 30th Electrical Insulation Conference, EIC 2011
Y2 - 5 June 2011 through 8 June 2011
ER -