What is it about?
In order to boost the role of hydrogen in the energy infrastructure, hydrogen blending in pipelines for natural gas is an important intermediate step. We present an observer that allows to track the hydrogen concentration in pipeline networks. The model is a 3x3 system of hyperbolic balance laws, that contains the continuity equation for natural gas, the continuity equation for hydrogen and a balance of momentum for the mixture. We show exponential synchronization of the observer system and the original system in the framework of classical semi-global solutions.
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Why is it important?
Hydrogen blending poses some challenges in the operation of the pipeline networks, since the concentration of hydrogen in the natural gas should remain below a given upper bound. In order to track whether this constraint is satisfied, it is mandatory to track the concentration of hydrogen in the gas flow using an observer system.
Perspectives
While in this paper we have assumed that the velocity of hydrogen is identical to the velocity of the gas mixture, a more general model could allow for two different velocities for natural gas and hydrogen. It is of high interest to extend the analysis to this case.
Martin Gugat
Friedrich-Alexander-Universitat Erlangen-Nurnberg
Read the Original
This page is a summary of: An Observer for Pipeline Flow with Hydrogen Blending in Gas Networks: Exponential Synchronization, SIAM Journal on Control and Optimization, August 2024, Society for Industrial & Applied Mathematics (SIAM),
DOI: 10.1137/23m1563840.
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