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 language | American English |
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Article number | 8836648 |
Pages (from-to) | 1807-1819 |
Number of pages | 13 |
Journal | IEEE Transactions on Sustainable Energy |
Volume | 11 |
Issue number | 3 |
DOIs | |
State | Published - 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