断路器操动机构仿真模型在故障诊断中的应用  

Application of CB operating mechanism simulation model in fault diagnosis

作　　者：安涛[1] 王庆丰[1] 唐建中[1] 姚明[2] 

机构地区：[1]浙江大学流体传动与控制国家重点实验室,浙江杭州310027 [2]上海市电力公司,上海200025

出　　处：《电工电能新技术》2010年第1期41-44,80,共5页Advanced Technology of Electrical Engineering and Energy

摘　　要：为研究断路器操动机构关键轴上的摩擦力对断路器性能的影响,给断路器机械系统故障预测及诊断提供依据。建立了断路器操动机构的合、分双工况联合仿真模型并验证了模型的有效性;对断路器主轴、脱扣半轴等的摩擦力增大对断路器特性的影响进行了仿真分析。分析表明断路器关键轴上摩擦力增大是导致断路器拒动和误动的原因之一。提出了监测机械故障的特征量。A circuit breakers （CB） operating mechanism dynamic model is established to study the influence of friction force on CB performance for CB mechanical faults diagnosis and prognosis. Simulation and experimanetal results have been obtained to validate the effectiveness of the proposed model. Based on this model, the effect of the changes of friction force on main shaft, trip shaft etc. on CB performance is analyzed, and the results show that the increase of friction force on key shafts could cause some serious faults on CB such as resisting closing, resisting opening which could be prognosticated by observing the features constructed from the proposed model. This study provides a significant criterion for research and development of fault prognosis for CB operating mechanism.

关 键 词：断路器 操动机构 仿真模型 摩擦力 故障诊断 

分 类 号：TM56[电气工程—电器]