Coordinated Planning Strategy for Integrated Energy Systems in a District Energy Sector

Wentao Yang, Weijia Liu, Chi Chung, Fushuan Wen

Research output: Contribution to journalArticlepeer-review

66 Scopus Citations

Abstract

With the ever-growing integration of diverse distributed energy resources, modern district energy sectors are transitioning into integrated energy systems (IESs), which generally consist of various energy carriers such as electric power, natural gas, and heat. Instead of modeling individual energy carriers, the emergence of IESs requires comprehensive consideration of all involved energy systems in both planning and operation phases. This paper proposes a comprehensive planning strategy for a district energy sector to address the challenges of IES planning considering the coupling of power, gas, and heat systems. The proposed planning model contains an operational module that develops a steady-state optimal multi-energy flow (OMEF) for the IES considered and a multi-stage expansion module that optimizes the investment decisions. To efficiently solve the proposed planning model, which is formulated as a mixed-integer nonlinear programming problem, an improved generalized Benders decomposition algorithm that utilizes dynamic dual multipliers to improve the convergence speed is employed. The effectiveness of the proposed planning model and the feasibility of the improved Benders decomposition algorithm are verified in case studies.

Original languageAmerican English
Article number8836648
Pages (from-to)1807-1819
Number of pages13
JournalIEEE Transactions on Sustainable Energy
Volume11
Issue number3
DOIs
StatePublished - Jul 2020

Bibliographical note

Publisher Copyright:
© 2010-2012 IEEE.

NREL Publication Number

  • NREL/JA-5D00-77364

Keywords

  • Coordinated planning
  • district energy sector
  • improved generalized Benders decomposition
  • integrated energy systems
  • optimal multi-energy flows

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