一种混合式光学电流互感器的设计

A design of hybrid optical current transformer

介绍了一种混合式光学电流互感器,它包含两个传感输出通道:传统采样电流传感通道和块状光学玻璃传感通道。利用采样电流传感器的高精度稳态输出对光学玻璃传感头进行跟踪系数校正,有效地提高了整个混合式光学电流互感器的稳态精度和暂态精度。本设计使得光学电流互感器的频带宽、无磁饱和等一系列优点得到充分发挥,同时具有的双输出通道也是对电力系统保护的一种冗余设计,为目前光学电流互感器的实用化提供了一种全新的思路。

A novel design of hybrid optical current transformer (HOCT) is introduced. The HOCT includes two sensing output channels-conventional sampling current sensing channel and bulk-optic glass sensing channel. It effectively improves the transient and stationary accuracy of HOCT by using the hign accuracy stationary output of sampling CT to adjust the output of bulk-optic sensing head.The advantages of HOCT such as wide-band, non-magnetic saturation are achieved; meanwhile, double output channels is a redundant design for power system. For practical research of HOCT, this is a new design thought.