电磁搅拌漏电流检测系统设计与应用

Leak Current Detection System for Electromagnetic Stirring Which Based on Fluxgate Technology

精准的漏电流大小实时在线检测系统是连铸生产线上的电磁搅拌装置系统正常可靠长久运行的前提条件之一。该文采用基于磁通门技术原理的漏电流传感器,结合漏电流信号采集和处理电路,设计一种用于电磁搅拌系统的漏电流在线检测系统。与传统的漏电流检测技术系统相比,该漏电流检测系统不仅具有稳定性、可靠性以及准确性高的优点,而且还能对电磁搅拌系统中的电磁搅拌变频电源和电磁搅拌线圈负载分别在线进行漏电流大小采集。试验和应用实践结果表明,该基于磁通门技术的漏电流检测系统能够满足电磁搅拌系统中对在线漏电流大小检测的各项性能需求,并已经成功地将该系统集成在国产的电磁搅拌装置系统中。

Accurate real-time online detection system of leakage current is one of the prerequisites for the normal and reliable operation of the electromagnetic stirring device system in continuous casting production line.In this paper,the leakage current sensor based on fluxgate technology,combined with the leakage current signal acquisition and processing circuit,a leakage current on-line detection system for electromagnetic stirring system is designed.Compare with traditional leak current detection technology,this new leak current detection system more stable,more reliable and accurate.Moreover,this leakage current of the frequency conversion power supply and the load of the electromagnetic stirring coil in the electromagnetic stirring system can be collected online respectively.The test and application results show that the leakage current detection system based on fluxgate technology can meet the performance requirements of the online leakage current detection in the electromagnetic stirring system,and the system has been successfully integrated into the domestic electromagnetic stirring device system.