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隔离和抗干扰是电力设备和以计算机为中心的监测系统可靠工作的保证。磁隔离和光隔离是目前可用的两种隔离技术 ,光隔离技术的频带宽、电磁干扰小 ,但是不能传送能量类信号 ,磁隔离可以传送能量信号。文中把电力通信设备的待检测信号分成 3类 ,设计和研制了针对不同信号的隔离变送电路。还给出了一个多输出前馈式直流—直流隔离电源的设计方法。
Isolation and immunity to interference is a guarantee of reliable operation of power equipment and computer-based monitoring systems. Magnetic isolation and optical isolation are the two available isolation techniques. The optical isolation technology has the advantages of wide frequency band and small electromagnetic interference, but can not transmit energy signals. Magnetic isolation can transmit energy signals. In this paper, the signal to be detected of power communication equipment is divided into three categories, and the isolation transmission circuit for different signals is designed and developed. Also given a multi-output feedforward DC - DC isolated power supply design.