A Bond Graph Approach for Predicting the Trigger Hook Response Time of High-Voltage Circuit Breaker Driving Mechanisms^#

Abstract

This article presents an energy-based bond graph approach for simulating the trigger hook response time of the driving mechanism used in high-voltage circuit breakers. The complicated topology-changing motion characteristics of the mechanism and the corresponding contact–impact phenomena are largely simplified in the bond graph model by introducing a continuous contact force module with switched zero-junction. A practical method for calibrating the equivalent system parameters of the model based on simple experiment data is also presented. The effectiveness and accuracy of the proposed method is verified by comparing the simulated results with the measured data of a real system under various applied conditions.

Keywords:

• Bond graphs
• Circuit breaker
• Contact mechanics
• Response time
• Switched zero-junction
• Topology changes

Notes

^#Communicated by S. Velinsky.