Dynamic Expansion Planning of Multi-Carrier Energy System Considering Electrical Transmission Network Effects

Abstract- In this paper, a novel model is proposed to solve dynamic expansion planning of resources and electrical transmission network in multi carrier energy systems. In the proposed model, optimal capacity and sitting of generation resources as well as new electrical transmission lines are determined for a multi-year horizon. The considered optimization problem aiming at minimizing the total operation and capital costs is formulated as a mixed integer linear program (MILP) model and then is solved by mathematical method. Impacts of modeling of electrical transmission network on expansion planning in the presence of combined heat and power (CHP) and thermal furnaces are investigated in an integrated system consisting of various multi carriers. Network losses, overall system efficiency and system reliability are used as metrics to analysis performance of the proposed model. Simulation results confirm that the way for modeling of electric network has important influence on expansion of resources as well as operation costs of CHP