基于Rogowski线圈电子式电流互感器的研究

简要介绍电子式电流互感器的类型及发展现状,分析了基于Rogowski线圈电子式电流互感器的工作原理和系统结构,在此基础上给出了具体的设计方案:系统采用激光供电方式,利用Rogowski线圈测量电流信号,经高压侧数据采集系统采样调整后的数据信息以曼彻斯特码格式通过光纤传输到低压侧的合并单元,合并单元在完成数据解码校验之后,将数据信息按以太网格式组帧编码,由以太网口串行发送至二次保护控制设备。同时,对研究过程中存在的问题进行分析,指出下一步研究工作的方向和重点。

Research of Electronic Current Transducer Based on Rogowski Coils

The type and the actuality of electronic current transducer are introduced, the principle and system structure of electronic current transducer based on the Rogowski coilare are analyzed, then a project for implementing is proposed: the transducer use laser light energy to be power supply. The current signals are measured by Rogowsli coil, then data-sampling system is used to turn the analog signals into digital signals, the signal data is transformed into Manchester code and is transmitted to the merging unit through the optic fiber. After the merging unit decoding and verifying, the data is made into Ethernet format, is transmitted to the protective and control device serially through Etherne interface.the problem existing in the course of studying is analysed, and the direction of next research work and focal point are pointed out.