Weitere Informationen zum ausgewählten Vortrag

Numerische Simulation und Optimierung stationärer Gasflüsse

Raffael Felde

Dienstag, 19. Oktober 2021 14:15Uhr

European transmission gas networks are expected to play a major role for the transition to green energy supply as transition technology and for transporting and storing green gas as generated from green energy sources. They are endangered by a wide range of potential disruptions, for example ageing and corrosion, physical damage through construction works (third party interference) and attacks, cyber-attacks and coordinated attack vectors. Hence the determination of the effects of local damage events on the supply of consumers and network elements is required for a variety of individual events and combinations of events. Against this background, (0-dimensional) simulations are used to predict and model gas pressures at nodes and gas volume flows for each pipeline. This can be realized by solving algebraic equations using numerical optimization with the aim of minimizing a given objective function subject to equality and inequality constraints. Representative network examples within the context of the EU project SecureGas are generated from published sample grids, inspection of existing maps and literature on gas transport on the level of European transmission grids. Thus, gas grids with realistic lengths, diameters and pressure boundary conditions, the external and internal inflows, outflows and possibly also storage capabilities are generated. Using such representative networks, network models are created for which the effects of potential disruptions are calculated predictively and systematically. For this purpose, the number of nodes not supplied and the pressure loss in nodes that are no longer supplied sufficiently are determined given defined full, single or multiple disruptions.