微机保护装置抗电快速瞬变脉冲群的研究  

Research on EFT/B Countermeasure of Microprocessor Protection Device

作　　者：王玉峰[1,2] 邹积岩[2] 廖敏夫[2] 

机构地区：[1]辽宁科技大学,辽宁鞍山114051 [2]大连理工大学,辽宁大连116024

出　　处：《高压电器》2010年第10期10-15,共6页High Voltage Apparatus

基　　金：国家自然科学基金项目(50507001);校青年教师基金项目(004928)

摘　　要：为了抑制电快速瞬变脉冲群(简称EFT/B)对微机保护装置的干扰,首先分析EFT/B干扰微机保护装置使其发生显示不正常、误动、拒动、甚至系统死机的原因。然后,通过对微机保护装置的外部端口施加EFT/B的试验方法来测试各种保护措施抑制EFT/B的效果。最后,对一套真空度在线监测系统进行EFT/B抗扰度试验测试,试验结果表明,改进的分布式电源、铁氧体磁珠、去耦电容等保护措施对EFT/B具有较好的抑制作用。In order to protect microprocessor protection devices from EFT/B,the cause about abnormal of display,malfunction,rejecting act and even a crash of microprocessor protection devices when it suffer from EFT/B was analyzed firstly.Then,effect of each EFT/B countermeasure was tested when external port of microprocessor protection devices was suffering from EFT/B.Finally,a set of vacuum monitoring system on-line was under EFT/B immunity test.The experiment indicated that EFT/B countermeasures such as improved distribution power supply,ferrite bead and decoupling capacitor were effective.

关 键 词：电快速瞬变脉冲群 微机保护装置 抗扰度试验 铁氧体磁珠 

分 类 号：TM774[电气工程—电力系统及自动化]