【摘要】 介绍了一种基于线圈电流信号与触点状态的高压断路器故障诊断专家系统。首先,分析了高压断路器的操作过程,并根据其操作特性提取隐含在线圈电流和触点状态中的有效信息;其后,在找出特征参数与断路器状态对应关系的基础上,设计了基于规则的断路器故障诊断专家系统;最后,以锁勾润滑不足、分闸线圈故障2种故障为实例,分析专家系统的推理过程。经试验验证,该专家系统可以准确地诊断出断路器多种故障,并在目前断路器维护现状的基础上给出合理的检修建议。更多还原

【Abstract】 A fault diagnosis expert system for high voltage circuit breaker is designed based on coil currents and contact states.The operating process of breakers is analyzed,and the available information is extracted from coil currents and contact states according to operating features.The fault diagnosis expert system for breakers is then designed based on relationships between eigen -parameters and breaker conditions.The reasoning process of the expert system is introduced with two fault examples:poor lubrication and trip coil fault.It is validated that the expert system can detect different kinds of breaker faults accurately and provide reasonable maintenance suggestions.更多还原