基于IEC61850标准的电子式互感器合并单元的建模与实现

Modeling and Realization of ECT/EVT MU Based on IEC61850

电子互感器因其线性度高、不存在磁饱和现象等许多优势,势必在将来代替电力系统中传统的电磁式互感器。而合并单元是电子互感器的核心组成部分,合并单元必须在给定的时间内处理和发送大量实时采样数据,其处理、传输采样数据的可靠性和实时性直接关系到站内保护、测量设备的运行。本文按照国际电工委员会IEC61850标准,建立合并单元的数据模型及通信映射的实现方式,设计基于FPGA合并单元的系统组成,并通过VHDL语言编程利用QuartusII6.0仿真试验验证了本文所设计的合并单元模型和方案的部分关键功能。

ECT/EVT is bound to replace the tradition electromagnetic transformer in the future because of the higher linearity of the former; Moreover, there is electromagnetic saturation in tradition transformer. A key component of ECT/EVT is merging unit （MU） that must process and send sampled data at a time limit set. The reliability and real-time of MU is directly related to the running of measure and protection equipments of power station. This article set up the date model of MU, design the communications mapping according the IEC61850 and equipment system of MU based FPGA, test some functions of system design program using VHDL language on QuartusII6.0.