Research of double loop optical fiber self-cicatrized network based on Neuron3150

Abstract

It is a comparatively popular method by adopting industrial field bus in communication of bay level in substation automation system. There are many kinds of industrial field bus, such as CAN, PROFIBUS, LonWorks and etc. PROFIBUS and CAN both have inherent shortcomings in communication rate and network composition. Recently, industrial Ethernet is one of its development trends, industrial Ethernet cannot construct looped network and its real-time performance do not meet the need of substation automation system in Jones, MT (2003). Lon Works is the most complete field communication bus, which have seven level communication protocol, but its communication rate can only reach 34kbps in commonly I/O mode adopted. The need of real-time of substation automation system is not meet by the communication rate of LonWorks. In this paper, the structure of Neuron3150 is studied and new hardware structure and arithmetic is adopted, thus communication rate of 1.25Mbps and Double loop Optical Fiber self cicatrized Network are carried out, which are adaptive to communication of bay level in existing substation and distribution substation especially.