Research on Development Direction and Key Technology of Modern Smart Distribution Network

With the continuous deepening of the construction of new energy system, renewable sources and novel loads, such as distributed power supply, electric vehicles and controllable user-side resources, have developed rapidly and their proportion has reached a new height. The fluctuation and randomness of these new sources and loads pose new challenges to the safe operation and flexible regulation of the distribution networks, and it is urgent to upgrade the distribution network towards modernity and intelligence. In response to the requirements of the development of modern smart distribution network, the connotation and characteristics of modern smart distribution networks are analyzed, and the intelligent demand and development focus of distribution network are elaborated. In view of the diversity and difference of distribution network construction, the key technologies for upgrading traditional distribution network to modernity and intelligence are explored by combining five typical scenarios: coordinated development of micro-grid, efficient carrying capacity of charging facilities, efficient utilization of new energy storage, upgrading of urban and rural distribution network, and efficient coordination of source, network, load and storage.