550 kV GIL 弹簧触指结构的多物理场耦合分析与优化设计OA

Spring contact finger is critical electrical connecting element in high-voltage electrical equipment,and its performance directly affects the safety and reliability of the equipment.In this paper,the effects of wire diameter,number of spring coils,and the groove angle of the contact base on the performnce of the spring contact finger are in-vestigated,finding that the wire diameter and the groove angle have a significant influence on the electrical contact performance of the contact finger.Increasing the wire diameter can reduce the contct resistance and current density,but may lead to localized overheating.Increasing the groove angle can reduce the contact resistance and contact tem-perature rise,but may result in excessively high current density.To achieve optimal performance,in this paper the NSGA-II multi-objective genetic algorithm is employed for optimization,with the minimal contact temperature rise as the objective The optimization results show that the optimal performance of the contact finger is achieved when the wire diameter is 1.5 mm,the number of spring coil is 135 and the groove angle is 135°.This study reveals the influ-ence of tructural parameters of the spring contct finger on the electrical contact performance and proposes an optimi-zation method based on a multi-objective genetic algorithm,providing a theoretical basis for GIL contact finger struc-tural design and thermal fault analysis.