配电开关动作特性在线监测系统

On-line Operation Characteristics Monitoring System of Distribution Switchgears

介绍一种基于霍尔电流传感器的配电开关动作特性在线监测系统。该系统由终端采集配电开关分、合闸线圈的电压电流信号,子站汇总各终端信息并处理后上送主站,主站将各配电开关数据拟合出分、合闸波形图后,与典型波形进行比对,分析各种重要参数的变化趋势,进而判断配电开关的健康状况。该系统的研发和应用为配电开关状态管控提供依据,提高配电网运行可靠性并降低运维成本。

An on-line operation characteristics monitoring system for distribution switches based on the Hall current sensor is introduced. The FTU（feeder terminal unit） of the system collected voltage and current signals of distribution switches opening and closing coils, which are collected by sub-stations and sent to the master station. The opening and closing distribution switches waveform graphs are fitted by the master station, and compared with the typical waveforms. Then trends of important parameters are analyzed, and the running state of distribution switches are assessed. The system provides a basis for distribution switches state controls, improves the reliability of the power system operation and reduces the cost of maintenance.