继电保护音频接口技术的研究

STUDY ON THE NEW SCHEME OF AUDIO TONES DEVICES FOR PROTECTIVE RELAYING

本文介绍了继电保护远方通信系统采用FSK制式音频接口的构成体制及CAT系列音频接口装置,该系统采用可编程频率合成及波形权加技术产生FSK信号,接收鉴频采用新颖的相干检测技术,整机系统功能齐全,抗干扰能力强,其样机的测试和试验证明了技术方案的可行性。

This paper introduces a new series of audio tone devices based on several types of FSK scheme for protective relaying.In which, the transmitted FSK signal is generated by a programmable synthesizer with new waveform converter,the receiver coherent dectector for noise spectrum modification is used to prevent false command. Practicability and reliability of the new scheme have been prevent by test.