登录
注册关于电子线路多级过电压保护的讨论
The Discussion of Multi —Step Overvoltage Protection of Electronic Circuit
摘要 本文基于电子线路的多级过电压保护装置的设计原则，提出了把低通滤波器件和限幅器件组合在一起的组合防雷系统，并采用电磁暂态计算程序EMTP分析了低通滤波器元件参数对保护性能的影响和其幅频特性。同时，本文还提出了过电压保护冲击自动报警与计数系统设计的可行性方案。
关键词 多级保护 电磁暂态计算 低通滤波器 自动报警与计数
Abstract On the basis of the divising principles of a multi-step over-voltage protection of
electronic circuit, a protection system combined Low Pass Filter (LPF) with voltage limit
devices is analyzed in this paper. The effects of LPF to the over-voltage protection
function and its Range-Frequency Characteristic are analyzed by Electro-Magnetic
Transient Program. Furthermore, an automatic alarming and calculating system of over-
voltage pulse is suggested.
Keywords multi-step protection circuit; electromagnetic transient calculation; Low Pass
Filter; automatic alarming and calculating system
