Mathematical Modelling of Power-to-Gas Devices for the Medium Term Simulation of Integrated Energy Systems

This paper presents the mathematical formulation for the modelling of Power-to-gas devices that has been included in the existing medium term Power System simulator sMTSIM. This is the first step towards the implementation of a linear mathematical model capable to describe the integrated Electricity and Gas Systems. Such kind of tools is fundamental to perform scenario analyses on the future Energy Systems: the path to a completely decarbonized world, in fact, passes through the use of low carbon syngas, produced by Power-to-gas devices. Such devices, consuming electricity to produce syngas, are also useful to reduce the impacts of a large installation of non-programmable Renewable Energy Sources on the Power System. A case study based on a 2050 scenario of the Italian Power System and characterized by a very high share of non-programmable RES generation is also presented to test the upgraded version of sMTSIM.