Integrated microelectronic switchboards for substations of Sanyo shinkansen line

摘要

Twenty-five years have passed since the Sanyo Shinkansen Line was opened to traffic, and the local switchboards controlling and protecting the systems of the substations have aged to the point where a decision was made to replace them. To realize new switchboards with improved reliability, greater compactness, maintenance-free operation, and higher functionality, we adopted the latest microelectronic equipment. Furthermore, using function-intensive digital relays with a real-time operating system installed and a multi-CPU configuration, we combined the functions of the equipment and developed integrated microelectronic switchboards that are more complex, more reliable, and maintenance-free compared with conventional switchboards.