Optimal Scheduling of Integrated Energy System Considering Gas and Thermal Pipeline Leakage Failure

With the increasing coupling of electricity, gas and heat systems, multi-energy flow modelling of integrated electricity-gas-heat energy systems has attracted significant attention. Nevertheless, gas and thermal pipelines are usually buried underground and prone to leakage failure, which affect the pipeline transmission capacity. Therefore, in this paper, the energy-carrying medium lost due to leakage failure is regarded as a virtual load. An optimal scheduling model of the system considering leakage failure is developed to depict the medium leakage process during pipeline operation, by taking into account the dynamic energy flow and topological changes of gas and thermal pipelines induced by the virtual load.