电力系统中电子设备抗干扰技术研究与应用

针对电力系统中静电感应、高压放电、雷电冲击、电源谐波和强电磁辐射环境中电子设备的电磁兼容问题，提出在电源设计中使用瞬变电压抑制器（TVS）抑制尖峰、浪涌干扰，使用滤波器抑制高频共模干扰和应用铁氧体材料增强电源抗干扰性能；对电子线路板的抗干扰设计提出了一些原则；并对电子设备的屏蔽方式和信号传输线路的抗干扰提出解决方案。通过对电子装置各环节采取综合抗干扰措施能有效地提高其抗干扰能力和满足在恶劣电磁环境下可靠运行的要求。

The Research and Application of Anti-Interference Techniques for Electronic Device in Power System

For EMC of electronic devices in electrostatic field,high voltage flashover,lightning impulse,source harmonic and strong electric magnetic interference situations,different measures are applied.TVS is applied to limit peak or surge interference,filter to restrict high frequency common mode interference and ferrite to increase the capability for source interference.The PCB design rules are presented,and the solutions for device shielding modes and anti interference of signal transmission lines are proposed.By the composite anti interference measures for electronic devices,the anti interference ability can be raised and the operation requirement in severe electromagnetic interference situations reached.