高压输电线路中大电流测量装置的设计  

Design of High-current Measuring Devices in High-voltage Transmission Lines

作　　者：曲昀卿[1] 

机构地区：[1]石家庄职业技术学院电气与电子工程系,石家庄050081

出　　处：《煤炭技术》2013年第8期77-79,共3页Coal Technology

摘　　要：设计一种新型用于高压输电线路中测量大电流的混合式光电电流互感器,它采用传统的电流互感器作探头,把被测电流信号转化为小电流信号,经过一个特殊的微功耗调制电路把被测电流信号转化成脉宽、脉位调制的光脉冲信号,再通过光纤将调制的被测信号传输到仪表控制端进行处理。此文研究的光纤传输光推动电流互感器为解决我国输电线路中大电流的测量提供了一条新的途径。The article designs a new hybrid photoelectricity-instrument transformer used for measuring the heavy current of the high voltage transmission lines.It uses the traditional current transformer for a probe, and transfers the measured current signal to the low current signal. Through a low power consumption modulator circuit, it transfers the current signal to light pulse signal modulated by pulse width and pulse position. Then, the optical fiber transfers the modulated signal to the control terminal of the meter. The optical fiber transmission l^ser＇driving current transformer i^troduced in this paper will provide a new method for resolving the heavy current

关 键 词：电流传感器 光推动 微功耗 脉宽调制 脉位调制 

分 类 号：TM933[电气工程—电力电子与电力传动]