高压电力系统中的光纤电压传感器

Fiber-Optic Voltage Sensors

本文提出了基于石英晶体反压电效应和基于单模光纤光弹效应的两种用于高压电力系统的光纤电压传感器。前者利用电场的线积分测量高电压(≥420kV),后者利用光弹效应引起的相位差与压电晶体外加电压成比例的关系来测量电压,不受温度和振动的影响。

Two type of fiber-optic voltage sensor are presentedwhich are used in high voltagemeasurement of electric powersystem. The one is based on the converse-piezoelectricity effect in quartz crystal which measures the high voltage(>420V) bymeans of line integral of electric field. The other is based on the photoelastic effect in a singlemode optical-fiber and utilizes the phase difference induced by the photoelastic effect that isproportional to the voltage across the piezoquartz to measure the voltage, it is low-priced, simple, easy to implement, and insensitive to temperature and vibration,.