Robustly Coordinated Operation of a Multi-Energy Microgrid with Flexible Electric and Thermal Loads

Cuo Zhang*, Yan Xu, Zhengmao Li, Zhao Yang Dong

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

171 Citations (Scopus)

Abstract

A multi-energy microgrid (MEMG) can simultaneously supply electric and thermal energy to customers to improve overall energy utilization efficiency. However, intermittency and uncertainty from renewable power generation, such as wind turbines and solar photovoltaics, as well as electric and temperature-dependent thermal loads can significantly challenge and complicate the operation of an MEMG. To conquer the challenges, this paper utilizes price-based demand response and indoor temperature control to flexibilize the electric and thermal loads, respectively. Then, a two-stage coordinated operation method is proposed to optimally coordinate the combined cooling, heat, and power plants, flexible electric and thermal loads, and thermal storage under these multiple uncertainties. The mathematical problem is modeled as a two-stage robust optimization model and solved by column-and-constraint generation algorithm. Simulation results verify high energy utilization efficiency and operating robustness of the proposed method.

Original languageEnglish
Article number8303751
Pages (from-to)2765-2775
Number of pages11
JournalIEEE Transactions on Smart Grids
Volume10
Issue number3
DOIs
Publication statusPublished - May 2019
MoE publication typeA1 Journal article-refereed

Keywords

  • Demand response
  • multi-energy microgrid
  • renewable energy
  • robust optimization
  • thermal load control

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