Research on Online Operation and Maintenance System of Distribution Automation and Its Relevant Communication Technology

As a key equipment in the new distribution network, the distribution terminal has a complex working environment and lacks the professional remote operation and maintenance methods. Traditional manual periodic maintenance is not targeted, and has poor timeliness, and low efficiency, which cannot meet the requirements of high-reliability operation and power supply guarantee of the new distribution network. This article conducts research on the remote online operation and its maintenance system for distribution automation and its relevant communication technology, and proposes a system architecture for remote online operation and maintenance. By fully utilizing existing resources and deploying operation and maintenance modules in the master station, test instruments, and terminals, remote operation and maintenance and automatic testing of distribution terminals can be achieved, transforming passive operation and maintenance into proactive one. According to the analysis of the data flow in the entire operation and maintenance process, corresponding communication protocols are designed. Parallel communication is designed to achieve operation and maintenance without affecting the normal operation of the distribution automation system. The management technology of parallel tasks at multiple terminals in the operation and maintenance master station is proposed to enable multiple test instruments to perform the maintenance work simultaneously. Through those on-site trials, the feasibility of the technology is verified, and the maintenance efficiency of the distribution network is improved, and they are doomed to support the rapid development of the new distribution network.