Distributionally robust unit commitment of integrated electricity and heat system under bi-directional variable mass flow

Xuewei Wu, Jiakun Fang, Zhe Chen*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

4 Citations (Scopus)

Abstract

This paper proposes a distributionally robust unit commitment of integrated electricity and heat system, in which the district heating systems are operated under variable flow and variable temperature (VFVT) with bi-directional mass flow considered rather than the commonly used constant flow and variable temperature (CFVT) control method to increase the flexibility capacity for renewable energy accommodation, and the distributionally robust optimization scheme adopted can additionally help increase the operation flexibility of system under high penetration of renewable energy. Piecewise linear method is adopted to convert the mixed integer nonlinear problem into its mixed integer linear counterpart, and tractable alternating optimization procedure is adopted to solve the problem in a decentralized scheme. Case studies conducted on a small scale system and a large scale system respectively demonstrates the effectiveness and the applicability of this method.

Original languageEnglish
Article number119788
JournalApplied Energy
Volume326
ISSN0306-2619
DOIs
Publication statusPublished - 15 Nov 2022

Bibliographical note

Funding Information:
Xuewei Wu's work is supported by China Scholarship Council (20184910516) and AAU Energy in Aalborg University.

Publisher Copyright:
© 2022

Keywords

  • Distributionally robust optimization
  • District heating system
  • Energy transition
  • Multi-energy systems
  • Renewable energy
  • System flexibility
  • Unit commitment

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