Optimum design of high voltage bushings by rational Bézier curves

Purpose – The purpose of this paper is to propose a new approach for designing different parts of a high voltage bushing. It also aims to consider technical and economical criteria for the optimum solution of the design problem.Design/methodology/approach – A novel method for finding the optimal contours of different elements of high voltage bushings, including ceramic insulator, electrode, and flange angle is presented. The rational Bezier curves are used for defining the surface of the insulators and conductors of the equipment. Then, these curves are optimally adjusted to obtain an appropriate techno‐economical solution. The utilized optimization method is the improved bacterial foraging algorithm (BFA) with variable step sizes. In the design procedure, two‐dimensional finite element method (2D FEM) is used to calculate the performance parameters in each step of the design procedure. In order to evaluate the performance of the proposed algorithm, optimal design of different elements of a 110 kV bushing...

[1]  Mazen Abdel-Salam,et al.  Field Optimization of High-Voltage Insulators , 1986, IEEE Transactions on Industry Applications.

[2]  Sivaji Chakravorti,et al.  Application of artificial neural networks for optimization of electrode contour , 1994 .

[3]  Carsten Trinitis,et al.  Optimization of HV electrode systems by neural networks using a new learning method , 1996 .

[4]  Cui Xiang,et al.  Optimal design of high voltage bushing electrode in transformer with evolution strategy , 1999 .

[5]  J. Pihler,et al.  Optimisation algorithm for the design of bushing for indoor SF6 switchgear applications , 2005 .

[6]  Z. Stih.  High Voltage Insulating System Design by Application of Electrode and Insulator Contour Optimization , 1986, IEEE Transactions on Electrical Insulation.

[7]  M. Abdel-Salam,et al.  Optimizing field stress on high voltage bushings , 1994, Proceedings of 1994 IEEE International Symposium on Electrical Insulation.

[8]  Sukumar Mishra,et al.  A hybrid least square-fuzzy bacterial foraging strategy for harmonic estimation , 2005, IEEE Transactions on Evolutionary Computation.

[9]  E. Stanek,et al.  Optimizing Field Stress on High-Voltage Insulators , 1987, IEEE Transactions on Electrical Insulation.

[10]  S. Chakravorti,et al.  A novel approach based on Simulated annealing coupled to artificial neural network for 3-D electric-field optimization , 2005, IEEE Transactions on Power Delivery.

[11]  Kevin M. Passino,et al.  Biomimicry of bacterial foraging for distributed optimization and control , 2002 .

[12]  Jesús Ángel Gomollón García,et al.  A theoretical approach to the optimization of high‐voltage insulators , 1997 .

[13]  Gerald Farin,et al.  Curves and surfaces for computer aided geometric design , 1990 .