Iec61850-based Intelligent Terminal Design And Communication Studies

IEC61850 is a new generation of international standards based on the general network communication platform for substation automation system. This standard provides the basic theoretical basis for the realization of Smart Substation. In Smart Substation building, the use of digital communication interface of the Intelligent terminal as the primary equipment is the ideal solution to achieve process layer device intelligent.This paper first introduces the research background of the Intelligent terminal and conducts research of Intelligent terminal related products at home and abroad. On the basis of the analysis of the Intelligent terminal features, the IED information model of the Intelligent terminal is constructed in accordance with IEC61850 modeling method. Designed the overall realization of the embedded processor (STM32F103ZET6) and field programmable gate array (CycloneⅡEP2C8Q208C8 FPGA) technology-based Intelligent terminal program, this paper sets up the hardware experimental platform, and has done a preliminary test. Then, software designed based on this hardware platform, and on the function to achieve several key issues to be explored. GOOSE communication principles and procedures of implementation are analyzed. Intelligent terminal MMS communication is a difficult. In researching MMS communication based on the theory of Intelligent terminal communications program of the MMS, the MMS communication server model is builded, and using C++ language to write the MMS communication protocol conversion interface program. At last, we do the simulation of MMS communication process between the two computers, and analysis the packet by MMS Ethereal network packet capture tool.Through the testing of the hardware platform and the GOOSE communication packet capture analysis to verify the Intelligent terminal can achieve the technical specifications and functional requirements in the actual project. Intelligent terminal MMS communication provides a reference implementation of the late. IEC61850-based Intelligent terminal design on product prototyping and later put into operation laid the foundation has good practical value in the power industry.