Second-order Cone Relaxation based Optimization Method of Optimal Operation of Distribution Systems with Integrated Energy

Integrated energy distribution system (IEDS) could improve the efficiency of energy utilization and minimize environmental pollution based on the multi-energy coupling link. Firstly, the model of distributed energy station is established; secondly, the optimization model for optimal dispatching of IEDS considering AC power flow of distribution system, gas flow of natural gas distribution network and the distributed energy station is established; thirdly, an optimization method for optimal dispatching of IEDS based on the second-order cone relaxation method is proposed. Finally, case studies are performed on IEDS including the modified IEEE 33-node distribution system, the modified 11-node natural gas system and 5 distributed energy stations to verify the effectiveness and efficiency of the proposed method.