关键词: 低压断路器, 可拓分析, 物元模型, 虚拟样机, 动作特性

Abstract: Aiming at the problems that the analysis of low-voltage circuit breaker operating characteristic was mainly focusing on switch-on/switch-off speed and switch-on/switch-off time,but not systematically taken into account the other inherent factors of operating characteristics and hadn't evaluated the operating characteristics synthetically according to all these factors,the process model of circuit breaker operating characteristic multidimensional analysis was established,the “Speed-Displacement-Force” three dimension and ten scale index system to analyze and evaluate the circuit breaker virtual prototype operating characteristic was proposed.Based on this index system,the evaluation method of circuit breaker virtual prototype operating characteristic was studied with extension analysis.In this method,the traditional classical field matter-element model was improved,and a matter-element model of circuit breaker operating characteristic evaluation was established|the extension evaluation algorithm of circuit breaker operating characteristic was designed,and the traditional correlation function was improved to make it suitable for the specificity of the circuit breaker operating characteristic evaluation.A practical case study on designing and analyzing a CDM1-100 type circuit breaker was provided for further demonstrating the feasibility and effectiveness of this evaluation method.

Key words: low-voltage circuit breaker, extension analysis, matter-element model, virtual prototype, operating characteristic