有关电磁兼容实例分析及抑制策略

Case Study and Repressive Strategies Based on EMC

在电力系统内有不少电子设备均处在电磁干扰的环境下工作,而在现场对那些敏感的设备来说,是不可能完全避免电磁干扰的,我们只希望采用比较经济合理的解决方法,将电磁干扰减小到最小限度。因此,为了实现这一目的,本文首先介绍了电磁兼容的前提条件、电磁干扰路径及电磁干扰的实例分析,并通过不同的干扰形式,采用了不同的抗干扰的抑制策略,如:金属屏蔽法、合理地布线和隔离法,有效地提高了电子仪器及设备的抗干扰性能,从而确保了电网设备、仪表及保护装置安全、稳定、可靠的运行。同时,也为相关的电力技术人员提供了理论参考依据。

In the power system,there are many electronic devices working in the electromagnetic interference environment.However,it is impossible to completely avoid electromagnetic interference as for those sensitive equipment,and we only hope the electromagnetic interference would be reduced to a minimum by using a relatively economical method.Therefore,in order to achieve this purpose,this paper first introduced a prerequisite for electromagnetic compatibility,electromagnetic interference path and its examples,and then for different forms of interference,it introduced different anti-jamming suppression strategies,such as:metal shield and reasonable layout and isolation.These methods effectively improved the anti-interference performance of the electronic devices and equipment so as to ensure safe,stable and reliable operation of the power grid equipment,instrumentation and protection equipment.At the same time,it provided a theoretical reference for the technical staff.