Design And Application Of 110kV Smart Substation Secondary System

The smart substation,as an important support that directly affects the stable operation of the smart grid,are responsible for multiple tasks such as power transmission,distribution management,monitoring and regulation.Furthermore,the rapid development of automation technology,power electronic technology and computer communication technology also impels smart substation to be more intelligent and automated.This paper analyzed the original data of the substation,and selected the configuration scheme based on the actual situation of the 110 kV Dinggang Smart substation.With the relevant theoretical knowledge of relay protection system,integrated monitoring system and intelligent supplementary controlled system,this paper made a research on the composition of relay protection system,automatic system architecture and the function of intelligent supplementary controlled system.Finally,the configuration scheme of 110 kV smart substation was designed to meet the local actual needs.By investigating the implementation of SCD configuration file visualization,the paper summarized the current status and shortcomings of SCD configuration file visualization,and then optimized the scheme.The design of visualization scheme of relay protection is of great significance for the operation and maintenance.This research realized the visual online inspection function of the automatic system by combining the automatic system with the intelligent supplementary controlled system;implemented the visualization function of the sequential control by designing the sequential control flow.