1887

Abstract

Summary

Compressed air energy storage in porous formations (PM-CAES) can provide storage capacity in future energy systems largely relying on renewable power generation. The limiting conditions for a storage plant design are given by the geological setting and the load profile the storage plant has to support. Neither of these conditions is known exactly given that the load profiles depend on interactions within the future energy system and the properties of the geologic subsurface being inherently uncertain. Consequently, multiple scenario simulations must be evaluated to estimate the storage behaviour for a given geological setting.

The power a PM-CAES system can provide or take up is a function of the available mass flow and the pressure. Such systems show a positive feedback mechanism during discharging and a nega-tive during charging, i.e. the required mass flow decreases with increasing pressure for a given power rating. To accurately represent these feedback mechanisms a coupling interface was de-veloped, combining the component based power-plant model TESPy and the reservoir simulator package ECLIPSE. In combination with using homogeneous replacement models derived from a heterogeneous ensemble model the developed simulator coupling can be used to accurately as-sess the behaviour of a realistic PM-CAES under various load conditions.

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2021-10-18
2024-04-16
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