| 引用本文: | 程利军,李轶群,焦韶华.快速瞬变脉冲群对微机保护装置数据采集系统的影响及对策[J].电力自动化设备,2004,(1):14-19 |
| .Influence of EFT on data acquisition system of numerical protection and its countermeasure[J].Electric Power Automation Equipment,2004,(1):14-19 |
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| 摘要: |
| 介绍了微机保护装置端口定义、快速瞬变脉冲群的特点以及对微机保护装置的影响。重点分析了快速瞬变脉冲群对数据采集系统的影响，即造成保护装置误动、拒动。指出抑制瞬变干扰的对策有减小辅助变流器和变压器原、副方绕组的耦合电容，增加共模干扰回路阻抗以及“两次采样”的软件方案等。 |
| 关键词: 微机继电保护 数据采集系统 快速瞬变脉冲群 |
| DOI： |
| 分类号:TM77 TM769 |
| 基金项目: |
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| Influence of EFT on data acquisition system of numerical protection and its countermeasure |
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CHENG Li-jun1 LI Yi-qun2 JIAO Shao-hua2
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| Abstract: |
| The port definition of numerical protection,the features of electrical fast transient/burst(EFT)and its influence on numerical protection introduced.The influences of EFT on the data ac-quisition system of numerical protection are emphasized:improper functioning.The countermeasures to improve the immunity against EFT are decreasing the coupling capacitor between the primary and the secondary windings of CT or P T,using the ferrites to absorb the transient energy ef-fectively,applying"double sampling"software solution,etc. |
| Key words: numerical protection,data acquisition system,electrical fast transient/burst, |
