Reconstruction of low voltage networks: From GIS data To power flow models

(paper accepted) The creation of realistic models of low voltage (LV) distribution feeders is a fundamental step to understand the potential impacts from low carbon technologies (LCTs). Unfortunately, Distribution Network Operators (DNOs) do not, in general produce these models mainly because of the historic passive nature of LV circuits. Available information at LV level is in most cases limited to Geographic Information Systems (GIS) typically produced for asset management purposes. Although this GIS data is useful, is likely to have some issues due to the large amount of information handled. One of the main problems sometimes found is the network connectivity, i.e., feeder segments not adequately connected, which can lead to a model unsuitable for power flow analysis. This work proposes a systematic, practical and implementable methodology to achieve the full reconnection of LV feeders and, as a result, the production of suitable computer-based models. This proposed methodology can help DNOs around the world facing similar challenges. Indeed, it has already been successfully applied to create more than five hundred real residential, underground UK LV feeders.