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Distributed fault self-healing system and identification and management method for topology of the smart distribution network

Based on the structure and operation characteristics of smart distribution network as well as the requirements of fault self-healing system, a distributed fault self-healing system is proposed. The system structure, and the function of distributed smart terminal unit(DSTU) are designed. Taking the characteristics of fault self-healing system into consideration, the article proposes an identification and management method for topology. Each DSTU stores the basic topology information of the installation site, gaining adjacent terminal information, establishing logic layer and the minimum connection tree through broadcast communication. According to different topology sizes needed for fault self-healing system, topology recognition is classified into two types: generating and storing a small scale of topology information with finite broadcast communication; gaining a large scale of topology structure based on exchange relative information between agents which are determined by logic layer and minimum connection tree. Finally, method effectiveness is analyzed and proven with example.