中文摘要：

在电力系统中,基于Rogowski线圈的光电式电流互感器已被广泛应用于电流测量。在对光电式电流互感器系统组成及结构的分析基础上,对高压侧电路提出了改进,设计了以V/F转换电路和单稳态触发器74121为核心的电流互感器。该电路具有测量精度高,电路结构简单,功耗低和抗干扰能力强等优点,并且通过Protues仿真结果证明该设计方案的有效性。光电电流互感器的设计方案满足了我国电力系统电流测量设备微机化,智能化的发展要求。

英文摘要：

In the power system, optical current transformer based on Rogowski coil has been widely used to measure current. Based on the analysis of the composition and structure of optical currant transformer, improvement of high-voltage side circuit was proposed, and the current transformer was designed by using V/F converter circuit and the monostable 74121 as the core. The circuit has many advantages, such as high measuring accuracy, simple structure, low power consumption and strong anti-jamming ability, etc. The simulation of this circuit was executed by Protuas and the results prove the effectiveness of the design scheme.The design scheme of optical current trans- former meets the development needs of the national power system, which requires the currant measurement equipment computerizable and intelligent.