磁芯采用高频脉冲电流励磁，信号处理电路由峰值检波、低通滤波及差动电路构成。
The toroidal core was excited by sharp pulse current. The sensor circuit is composed of peak value detector, Butterworth low-pass filter and differential amplifier.
本文介绍了国内现有的典型低励失磁保护判据，分析了现有判据存在的一些问题。
It introduces the domestic existing partial or total loss of excitation protection criterion, analyzed the problem of existing criterion.
论述励磁系统中设置低励检测限制单元环节对电力系统及发电机安全稳定运行的作用和意义。
This article introduces low-excitation inspection and limiting in excitation system and its role in electric network, safe and steady operation.
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