基于在线监测的开关特性分析

Analysis of Switchgear Performance Based on On-line Monitoring

采用先进高压断路器状态在线监测系统监测断路器的分合闸运动状态及分合闸线圈的电流波形,获得弹簧的运行状态,随时监测断路器弹簧性能、弹簧的疲劳程度。解决了弹簧操作机构中重要元件弹簧在运行中的状态不易测量的问题,同时,从断路器分合闸线圈的波形,能够判断出线圈是否卡滞,辅助开关是否正常切换等常见故障,为断路器可靠安全运行提供有效的保证。

The advanced on-line monitoring system is applied to monitor the circuit breaker closing and opening motions and current waveform of closing and opening coil in order to obtain the running state of the spring and to monitor the spring fatigue performance at any time. It solves the problem that the spring which is the most important component in the operating mechanism is difficult to monitor in the running status. Meanwhile, some common faults, such as whether the coil is binding or the auxiliary switch is failures etc. can be judged from the current waveform of the closing and opening coil. It provides effective guarantee to reliable and safety operation of the circuit breakers.