数字式保护装置的抗干扰设计  

Antiinterference design for digital protection

作　　者：余晖[1] 芮志浩[1] 周欢荣[1] 邵初月 

机构地区：[1]国电南京自动化股份有限公司,江苏南京211100 [2]无锡宇峰电子有限公司,江苏无锡214063

出　　处：《电力自动化设备》2005年第10期82-84,共3页Electric Power Automation Equipment

摘　　要：针对电磁干扰由传导、辐射、耦合3种方式作用于系统的情况,对传导干扰实行电容滤波和磁珠抑制高频干扰相结合的处理方法;对辐射干扰采用将干扰源和被干扰源进行金属壳接地屏蔽的方法;对耦合干扰采用印刷电路板PCB(PrintedCircuitBoard)设计时将易耦合干扰的线路两边用地线包围等措施;最终使保护装置的抗干扰性能得到很好改善。The electromagnetic interference has three principal approaches to power system, i.e.,conduction,radiation and coupling. The capacitive filter and the magnetons restraining HF interference are used to deal with the conduction interference;both the interference sources and the disturbed sources are shielded with grounded metal rack to deal with the radiation interference;both sides of the lines susceptible to the coupling interference are surrounded by ground wires in printed circuit board design to deal with the coupling interference. As a result,the anti-interference performance of the protection has been significantly improved.

关 键 词：传导 辐射 耦合 滤波 抑制 屏蔽 

分 类 号：TM774[电气工程—电力系统及自动化]