断路器操作回路的智能化监测系统设计

为了监测断路器操作回路中跳/合闸回路、压板和保护出口接点的状态,并对其薄弱环节故障进行预警以避免断路器误动或拒动,设计了断路器操作回路的智能化监测系统。该系统改进了现有跳/合闸回路,并给出了系统中元件的选型与参数整定依据,能够实现跳/合闸回路的全工况监视和保护。为了实时监测断路器操作回路压板和保护出口接点的状态,实现压板误操作和保护出口接点故障报警,该系统采取了配合使用电感式接近开关和霍尔电压传感器的方法,并给出了传感器的具体安装位置。该系统采用单片机处理并上传传感器采集的现场信息,利用LabVIEW编写后台软件界面,能够实现实时状态显示、人机交互、历史数据存储和故障报警等功能。

Intelligent monitoring system design for circuit breaker operating circuit

In order to monitor the state of tripping/closing circuit, platen and protection outlet contact in circuit breaker operating circuit, and give early fault warning circuit weak links to avoid improper operation of circuit breaker, an intelligent monitoring system for circuit breaker operating circuit is designed. The existing tripping/closing circuit is improved and the principles of component selection and parameter setting are given, so that the system can monitor and protect the whole working conditions of tripping/closing circuit. In order to monitor the state of platen and protection outlet contact of circuit breaker operating circuit in real time and alarm for misoperation of platen and faults of protection outlet contact, the inductive proximity switch and Hall voltage sensor are interacted and the specific installation positions of Hall voltage sensors are given. The MCU is used to process and upload the field information collected by sensors. LabVIEW is applied to write the background software interface to realize the functions of real-time status display, human-computer interaction, historical data storage, and fault warning.