Reliability assessment for elementary connection modes of distribution system

The reliability of distribution system, which is one of three major components of electric power system, is influenced enormously by connection modes of itself. Combined reliability-network-equivalent with set theory, a connection mode based on primitive element, abstracting and generalizing the connection modes of distribution network, which constructs graphic and mathematic models of itself, is proposed in the paper, while the reliability can be analyzed. It is proved that the proposed method is effective and corrective by example results.