Research on probabilistic optimal power flow of distribution system with multilayer structure based on energy router

The core connotation of global energy interconnection is to realise the large-scale utilisation and sharing of renewable energy, especially distributed renewable energy. In order to realise energy sharing over a wide area and stabilise the impact of intermittent and random output distributed renewable energy on distribution network (DN) under global energy interconnection, a multilayer structure based on energy router for DN is proposed first. Then a multi-objective optimal power flow (OPF) model for the multilayer structure DN is established, which is aimed at the lowest cost of power generation, the minimum pollutant treatment cost and the minimum active power loss. This paper proposes the steady-state power flow model of the energy router embedded DN and formulates the model of OPF problem. Case studies are carried out on a modified IEEE 33-bus distribution system. The role of the energy router on improving the system voltage level is discussed. The results show that the energy router is able to regulate bus voltages of the system, and system operation status is greatly improved.