Research and Application of Diamond Distribution Network Self-Healing System

A self-healing system based on double-loop network connection mode is proposed in order to further improve the power supply reliability of 10kV distribution network. The model has good distributed generation(DG) access and low-carbon environmental characteristics. Firstly, this study analyzes the advantages of diamond distribution network, focuses on the structure and configuration of self-healing system. Moreover, expounds its principle from the aspects of protection action strategy, device function development and cooperation with original protection. The reliability and accuracy of the self-healing system are verified by dynamic model test and on-site joint adjustment results. Finally, as a consequence, some problems and solutions encountered in the process of installation, commissioning and operation and maintenance are summarized, which can provide some reference for the promotion and application in the future.