新型移频式(FSK)远方跳闸信号传输装置的研究

STUDY ON THE NEW FSK TRANSFER-TRIP SYSTEM

本文介绍了YBX-Ⅱ型远方跳闸装置,装置由YBX-Ⅰ型机派生,采用载频直接移频(FSK)方式,以实现命令信号传输。装置采用有源鉴频器、接收导频独选方式,提高装置的安全可靠性;用反时限信杂比检测、高电平脉冲干扰检测和电平低落检测等信号,闭锁跳闸命令的输出,从而有效地抑制各种形式的干扰。

This paper introduces the type YBX-Ⅱ Frequency-Shift Keying(FSK) transfer-trip system. Active frequency discriminator and Protected-guard frequency are used to improve the security of the system. With the inverse time-lag SNR modification and spike noise squelch circuitry, it can be immune from any kind of RF interference. Some principles and performances are given out.