Research on Collaborative Planning of Charging Facilities and Distribution Network in Old Residential Areas

For the charging problem of EVs (electric vehicles) in old residential areas, due to the early construction of old residential areas, the line capacity and node capacity can not meet the load growth caused by the connection of large-scale electric vehicles charging load to the distribution network, and there is a contradiction between the geographical location and capacity of transformers in distribution areas and the large-scale construction of charging facilities. Research on collaborative planning of charging facilities and distribution networks in old residential areas has been carried out. In this paper, the load prediction algorithm is used to obtain the EVs ownership in the target year, and EVs users are divided into two categories: orderly charging with public charging piles and disorderly charging with private charging piles. Combined with the ordered charging algorithm, the charging loads of EVs users with ordered charging and disordered charging are added to the charging station node and the base load node respectively for calculation. Combined with an example, The paper and analyzes the capacity of each line of the distribution network in the residential area under the conditions of working day and rest day, and puts forward some suggestions for the planning of charging facilities.