Bi-level Planning Model of Urban Diamond-type Distribution Network Considering Load Uncertainty

Abstract

The traditional distribution network connection type has difficulty with adapting to the reliability requirements raised from extensive access of distributed power sources and other uncertain factors. “Diamond-type” urban power distribution network owns superior source and user access adaptability, load transfer and balance ability between stations, and fault reconstruction capabilities. This paper proposes the “diamond-type” bi-level planning model for urban distribution network firstly. The upper-level model optimizes the grid planning result, with ability to meet reliability constraints being calculated in the lower-level reconstruction model. Secondly, a calculation method is proposed to simplify the solution process. Finally, an example is given to illustrate the effectiveness of the planning model and calculation method in this paper. The main advantages of the “diamond-type” connection mode in the urban distribution network are also compared and analyzed.