真空断路器在线监测系统的设计

Design of Hardware Circuits for Vacuum Circuit Breaker Online Monitoring Systems

摘要: 为解决真空断路器定期检修的烦琐工作，提出设计一种智能在线检测系统。该系统采用现代传感器技术，搭载分合闸线圈电流检测电路、触头接触压力检测电路、触头行程检测电路、机械振动检测电路、真空度检测电路、信号调理电路，实时检测真空断路器的运行状态。上位机根据实时数据绘制监测曲线，配合状态评估体系，对真空断路器运行情况进行分析，判断存在发生故障风险的等级以及发生故障的可能原因，然后上位机对出现的故障进行预警，维修人员针对预警部位进行及时维修。经实验验证，真空断路器在线监测系统可以对真空断路器的运行状态进行实时监测和故障诊断，确保故障发生时能够及时维修。

Abstract: In order to solve the tedious work of regular maintenance of vacuum circuit breakers, an intelligent online detection system is proposed. The system adopts modern sensor technology, and carries the current detection circuit of switching coil, the contact stroke detection circuit, the contact pressure detection circuit, the mechanical vibration detection circuit, and the signal conditioning circuit to detect the operation state of the vacuum circuit breaker in real time. The upper computer draws the monitoring curve according to the real-time data, and analyzes the operation of the vacuum circuit breaker with the state evaluation system to determine the level of the risk of failure and the possible causes of the failure. Then the upper computer warns the failure, and the maintenance personnel repairs the early warning parts in time. The experimental verification shows that the online detection system of a vacuum circuit breaker can monitor and diagnose the operation state of a vacuum circuit breaker in real time, so as to ensure timely maintenance when the fault occurs.