摘要
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 .
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.
关键词
光电混合式
电流互感器
微功耗
光推动
electro optic Hybrid current transformer, lower power consumption, optically powered.
