Optimization design on step-shape cushioning for hydraulic operating mechanism of high voltage circuit breakers

This paper is devoted to doing a simulation research on the cushioning process of hydraulic operating mechanism applied on 252kV high voltage circuit breakers and suggesting an effective design method to improve the performance of buffer device. According to the working principle of cushioning process, parametric analysis and optimization are carried out for the buffer process with considering step gap, step length, buffer area and the cross-sectional area of long hole. The results provide an effective method for the optimization design on hydraulic operating mechanism of high voltage circuit breakers.