Development of GB distribution networks with low carbon technologies and smart solutions: Methodology

Abstract This and the companion paper present key methodological and modelling aspects, as well as key findings and conclusions from the large-scale technical study into long-term development of future electricity distribution networks in Great Britain (GB) undertaken on behalf of all distribution utilities in GB. The objective is to apply traditional and smart solutions for development of diverse distribution networks with increased penetration of low carbon technologies (LCTs) and to assess their impact on the entire GB transmission system. This paper presents the applied methodological framework through system planning methods and principles, key features of the whole suite of undertaken steady-state and dynamic studies, and describes traditional and smart solutions for network development. A brief description of forecast energy scenarios and projections of LCT uptakes are then given in the companion paper. Results of the considered studies are presented for four large-scale real-life distribution networks covering all voltage levels and the integrated GB transmission-distribution system. These results are the basis for generalized conclusions, which give the answers to the key issues raised by the GB industry at the project initiation.