光推动光电混合式电流互感器的研究

研究了一种用于测量高压电站中输电线电流的光电混合式电流互感器 .采用传统的电流互感器作探头 ,设计了一个微功耗测量电路 ,把被测信号转化为脉冲宽度的变化 ,用光纤把信号传输到单片机系统进行处理 .可以在常规环境中实现光推动

On Electric-optic Hybrid Current Transformer With Optically Powered

An electro optic hybrid current transformer(CT) is de vised which is used in measuring the super voltage station's line current. With a conventional CT as a sensing element, a lower power consumption circuit was designed, which is powered by solar energy. The measured signal is converted into the pulse width signal, and then transformed into pulse-position signal which powers LED. The light signal is transmitted to microprocessor with a fiber optic linking. This circuit can be optically powered in normal environment.