Choice of Transition Scheme for Diamond Distribution Network Considering the Combination of Reliability and Economy

Aiming at the problems that the residual value of electrical equipment at the end of the planning cycle is not considered in the transition of the existing distribution network, and the lack of consideration of reliability and economy, a new diamond-shaped distribution network transition scheme selection method is proposed. First, a diamond-type distribution network life cycle model considering the combination of reliability and economy is established; and the selection method of diamond-type distribution network transition scheme based on the life cycle model is proposed. Secondly, according to the unique double-layer grid structure of the diamond-shaped distribution network, the influence of the failure mode of the diamond-shaped distribution network is analyzed, and the reliability evaluation method of the diamond-shaped distribution network is proposed; Finally, an example is selected for analysis to verify the scientificity and practicability of the proposed method.