Optimal Planning of Integrated Electricity-Gas System with Demand Side Management

Abstract

The demand side management (DSM) measures are designed to process a large number of controllable loads of different types in the multi-energy system, which is helpful to increase the sustainability of the overall energy system. This paper proposes a novel model for the optimal planning of integrated electricity-gas system (IEGS) with DSM that considers the impact of DSM measures. The proposed model minimizes the total cost of the system which includes investment cost, operation cost, carbon emission cost, and DSM compensation. In order to secure the normal operation of IEGS, the electricity and natural gas system normal operation constraints are included in the proposed model. By linearizing nonlinear equations, the formulation is transformed into a mixed-integer linear programming problem to enhance computational tractability. Finally, the combined IEEE 39-bus power system and 12-node natural gas system is adopted to verify the effectiveness of the proposed model for ensuring the system security.