基于快速开关的抗晃电技术应用

Application of Electricity Anti-interference Technology Based on Fast Switching

通过实例分析晃电的过程及对化工企业连续生产的危害性,介绍了一种基于电磁斥力原理的快速开关,模拟短路故障时刻,快速开关在20 ms内切除故障或与等效阻抗配合维持母线电压,使继电器、接触器及无低电压穿越功能的变频器等敏感设备不停机。比较了部分抗晃电处理措施,分析了快速开关在电力系统抗晃电领域的新应用。

Based on examples,the process of electricity interference and its harm to the continuous production of chemical enterprises are analyzed.A fast switching mode based on the principle of electromagnetic repulsion is described,which simulates fast switching at the short-circuit fault time to cut off the fault within 20ms or maintains the bus voltage in cooperation with the equivalent impedance,so that the sensitive equipment such as relay,contactor and frequency converter without low-voltage crossing function does not shut down.Several electricity anti-interference measures are compared,and analyses are performed on the new applications of fast switching in the electricity anti-interference field of power systems.