DUAN Xiong ying 1, ZOU Ji yan 1, WANG Ji yuan 2, et al. COMBINED OPTIC-FIBER CURRENT AND VOLTAGE TRANSDUCER WITH DIGITAL MODULATION FOR POWER SYSTEM[J]. High voltageapparatus, 2002, (2): 29-31+34.
DUAN Xiong ying 1, ZOU Ji yan 1, WANG Ji yuan 2, et al. COMBINED OPTIC-FIBER CURRENT AND VOLTAGE TRANSDUCER WITH DIGITAL MODULATION FOR POWER SYSTEM[J]. High voltageapparatus, 2002, (2): 29-31+34.DOI：
数字调制式一体化光纤电力传感器的研究
摘要
提出了数字调制式一体化光纤电力传感器
应用罗氏线圈作为电流检测单元
精密电容分压器作为电压检测单元
自具型电源直接从系统提取电能为高电位端的数字处理单元供电
测量信息由光纤传到地电位端。整机准确度可达到 0 .5 %
用做系统保护时
在很大的测量范围内可以保持较高的精度。系统体积小、成本低
不受外界干扰
可与微机直接相连
是电器智能化系统理想的检测单元。
Abstract
A combined digital current and voltage transducer for power system has been developed. A Rogowski coil and a capacitive voltage divider are used respectively for the line current and voltage measurements. Active electronic components are used to modulate signal
and power supply for these components is drawn from line via an auxiliary current transformer. Measurement information is transmitted to the remote receivers by optical fibers. The whole system meets 0.5% accuracy for metering and provides large dynamic range coupled with good accuracy for protective relaying purpose. The system proposed is small in size
low in cost
disturbance proof
and easy to connect to upgrade computer. So it is an ideal detection unit for intelligent apparatus.
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