Conference paper
Coordination of Power and Natural Gas Systems: Convexification Approaches for Linepack Modeling
Utilizing operational flexibility from natural gas networks can foster the integration of uncertain and variable renewable power production. We model a combined power and natural gas dispatch to reveal the maximum potential of linepack, i.e., energy storage in the pipelines, as a source of flexibility for the power system.
The natural gas flow dynamics are approximated by a combination of steady-state equations and varying incoming and outgoing flows in the pipelines to account for both natural gas transport and linepack. This steadystate natural gas flow results in a nonlinear and nonconvex formulation. To cope with the computational challenges, we explore convex quadratic relaxations and linear approximations.
We propose a novel mixed-integer second-order cone formulation including McCormick relaxations to model the bidirectional natural gas flow accounting for linepack. Flexibility is quantified in terms of system cost compared to a dispatch model that either neglects linepack or assumes infinite storage capability
| Language: | English |
|---|---|
| Publisher: | IEEE |
| Year: | 2020 |
| Pages: | 1-6 |
| Proceedings: | 13<sup>th</sup> IEEE PowerTech Milano 2019 |
| ISBN: | 1538647222 , 1538647230 , 9781538647226 and 9781538647233 |
| Types: | Conference paper |
| DOI: | 10.1109/PTC.2019.8810632 |
| ORCIDs: | Schwele, Anna , Ordoudis, Christos , Kazempour, Jalal and Pinson, Pierre |
Combined power and natural gas dispatch Convexification McCormick relaxation SDG 7 - Affordable and Clean Energy Second-order cone program Steady-state gas flow
Mathematical model McCormick relaxations Natural gas Pipelines Power generation Power system dynamics Steady-state bidirectional natural gas flow concave programming convex programming convex quadratic relaxations convexification convexification approaches dispatch model energy storage infinite storage capability integer programming linear approximations linepack modeling maximum potential mixed-integer second-order cone formulation natural gas flow dynamics natural gas networks natural gas systems natural gas technology natural gas transport nonconvex formulation nonlinear formulation operational flexibility pipelines power generation dispatch power generation economics power system quadratic programming renewable energy sources second-order cone program steady-state equations steady-state gas flow variable renewable power production
