浅谈计算机抗干扰技术

摘要

为进一步提高微机保护的抗干扰能力以确保电力系统的安全稳定运行,本文介绍了微机保护装置干扰的主要来源及其对微机保护装置的影响,以及微机保护装置抗干扰试验的方法。在对微机保护装置的硬件设计（包括电源端口、开关量端口、模拟量输入端口、通信端口、数字电路设计和整体结构设计等）和软件设计等方面的抗干扰方法研究的基础上,针对提高微机保护装置的抗干扰能力提出了一套全面的解决方案。提出的抗干扰措施已应用于实际的微机保护装置中并且顺利通过了相关部门IV级电磁干扰试验,对微机保护开发设计人员有一定借鉴意义。%To further enhance the protection of computer anti-jamming capability to ensure safe and stable operation of power systems,microprocessor-based protection devices introduced a major source of interference and its impact on computer protection,computer protection and immunity test methods.Protection devices in computer hardware design（including the power port,switch port,analog input port,communications port,digital circuit design and the overall structural design,etc.） and software design and other aspects of immunity based on the method for improving computer protection anti-interference ability of a set of comprehensive solutions.Proposed anti-jamming measures have been applied to practical microprocessor-based protection devices and successfully passed the relevant departments class IV electromagnetic interference testing,protection and development of computer designers have a certain reference.