光纤电压传感器分析及实验研究

Theoretical Analysis and Experimental Study of Optical Fiber Voltage Sensor

光纤电压传感器可以用于电网电压的监测和保护.本文对体调制型光纤电压传感器原理进行了分析,提出当考虑被测电压为交流正弦波时,有效值的线性测量范围大于瞬时值的线性测量范围,并分析了传感头各器件的取向对测量范围和非线性失真的影响,得到了提高信噪比的途径。

Optical Fiber Voltage Sensor can be applied to monitor and measure the voltage of the power network. In this paper, the principle of Bulk Optical Voltage Sensor is pondered and the influence of all parts of sensor head on measuring range and nonlinear distortion is analyzed, and the way of improving SNR is acquired. Through the study the linear measuring range of the virtual value is greater than that of the instantaneous value is known ,when the monitored voltage is alternating sine wave. Finally the optimal alignment of all parts by which the topmost SNR and the minimum nonlinear distortion can be acquired is determined.