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| 摘要: |
| 变电所自动化系统内部各个子系统都为低电平的弱电系统．工作环境是电磁干扰极其严重的强电场所，易受干扰而影响正常工作。简单介绍了变电所内电磁干扰的来源、传输途径和信息模式。阐述了变电所自动化系统在硬件方面的抗电磁干扰措施，包括隔离和屏蔽，一次和二次系统接地的改进，以及通过安装电源滤波器、隔离变压器和应用UPS供电等进行微机电源的抗干扰。实践证明，提高自动化系统的抗电磁干扰能力有着重要意义。 |
| 关键词: 变电所 自动化系统 抗干扰 |
| DOI： |
| 分类号:TM76 |
| 基金项目: |
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| Anti-jamming measures of substation automation system |
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LIN Sen GUAN Ming
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| Abstract: |
| The subsystemsof substation autom ation system are weak-electricity systems with lowvoltage and suffer from seriousEMI(Electro-MagneticInterference)of strong-electricity circum stance.The sources,transm ission way and signal mode of EMI in substations are introduced. The anti-jam ming measures are discussed from hardware,including isolation and shielding,grounding im-provements in primary and secondary systems,power source improvements for microcom puter byinstalling source filter,isolation transformer and using UPS. Practices prove that it is of centralim portance to strengthen the anti-jamming ability of substation autom ation system. |
| Key words: substation automation system anti-jamming |
