Abstract
Existing energy networks can foster the integration of uncertain and variable renewable energy sources by providing additional operational flexibility. In this direction, we propose a combined power, heat, and natural gas dispatch model to reveal the maximum potential “network flexibility”, corresponding to the ability of natural gas and district heating pipelines to store energy. To account for both energy transport and linepack in the pipelines in a computational efficient manner, we explore convex quadratic relaxations of the nonconvex flow dynamics of gas and heat. The resulting model is a mixed-integer secondorder cone program. An ex-post analysis ensures feasibility of the heat dispatch, while keeping the relaxation of the gas flow model sufficiently tight. The revealed flexibility is quantified in terms of system cost compared to a dispatch model neglecting the ability of natural gas and district heating networks to store energy.
Original language | English |
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Article number | 106776 |
Journal | Electric Power Systems Research |
Volume | 189 |
Number of pages | 7 |
ISSN | 0378-7796 |
DOIs | |
Publication status | Published - 2020 |
Event | XXI Power Systems Computation Conference - ONLINE EVENT, Porto, Portugal Duration: 29 Jun 2020 → 3 Jul 2020 Conference number: 21 https://pscc2020.pt/ |
Conference
Conference | XXI Power Systems Computation Conference |
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Number | 21 |
Location | ONLINE EVENT |
Country/Territory | Portugal |
City | Porto |
Period | 29/06/2020 → 03/07/2020 |
Internet address |
Bibliographical note
Online Companion: 10.5281/zenodo.3463160Keywords
- Combined power-heat-gas dispatch
- Convex relaxation
- Ex-post feasibility analysis
- Multi-energy systems
- Second-order cone program