石化企业高压开关柜状态监测系统设计

Design of High Voltage Switchgear Online Monitoring System for Petrochemical Enterprises

针对石化企业高压开关柜数量众多、故障率较高的现状,提出基于高压开关柜触头温升、断路器动作特性综合状态监测系统的设计思路,阐述了触头温升监测单元采用Zigbee无线通讯、自举电源供电的集成式数字测温传感器,断路器动作特性单元选用直线式位移传感器、闭环霍尔电流互感器、穿芯式电流互感器等关键要素,介绍了开关柜故障诊断系统的功能模块。该监测系统可以识别开关柜的基本故障类型,预测设备的发展趋势,对于保证石化装置供电安全具有重要意义。

Aiming at the present situation of high voh- age switchgear in petrochemical enterprises and the high failure rate, this paper puts forward the design i- dea of the integrated condition monitoring system based on the temperature rise of the high voltage switchgear and the action characteristic of the circuit breaker, and expounds the toring unit using Zigbee contact temperature moni- wireless communication , The bootstrap power supply integrated digital temper- ature sensor, the circuit breaker operating character- istics of the unit selection of linear displacement sen- sor, closed - loop Hall current transformer, wear core current transformer and other key elements, the sys- tem introduced the switchgear fault diagnosis system functional module. The monitoring system can identi- fy the basic fault type of the switchgear and predict the development trend of the equipment, which is of great significance to ensure the safety of the power supply of the petrochemical device.