Two-Stage Co-Optimization for Utility-Social Systems With Social-Aware P2P Trading

Pengfei Zhao, Shuangqi Li, Paul Jen Hwa Hu, Zhidong Cao, Chenghong Gu, Xiaohe Yan, Da Huo, Ignacio Hernando-Gil

Research output: Contribution to journalArticlepeer-review

2 Citations (SciVal)


Effective utility system management is fundamental and critical for ensuring the normal activities, operations, and services in cities and urban areas. In that regard, the advanced information and communication technologies underpinning smart cities enable close linkages and coordination of different subutility systems, which is now attracting research attention. To increase operational efficiency, we propose a two-stage optimal co-management model for an integrated urban utility system comprised of water, power, gas, and heating systems, namely, integrated water-energy hubs (IWEHs). The proposed IWEH facilitates coordination between multienergy and water sectors via close energy conversion and can enhance the operational efficiency of an integrated urban utility system. In particular, we incorporate social-aware peer-to-peer (P2P) resource trading in the optimization model, in which operators of an IWEH can trade energy and water with other interconnected IWEHs. To cope with renewable generation and load uncertainties and mitigate their negative impacts, a two-stage distributionally robust optimization (DRO) is developed to capture the uncertainties, using a semidefinite programming reformulation. To demonstrate our model's effectiveness and practical values, we design representative case studies that simulate four interconnected IWEH communities. The results show that DRO is more effective than robust optimization (RO) and stochastic optimization (SO) for avoiding excessive conservativeness and rendering practical utilities, without requiring enormous data samples. This work reveals a desirable methodological approach to optimize the water-energy-social nexus for increased economic and system-usage efficiency for the entire (integrated) urban utility system. Furthermore, the proposed model incorporates social participations by citizens to engage in urban utility management for increased operation efficiency of cities and urban areas.

Original languageEnglish
Pages (from-to)1875 - 1887
Number of pages13
JournalIEEE Transactions on Computational Social Systems
Issue number4
Early online date30 Aug 2022
Publication statusPublished - 1 Aug 2023


  • Cogeneration
  • Costs
  • Distributionally robust optimization (DRO)
  • Optimization
  • peer-to-peer (P2P) trading
  • Peer-to-peer computing
  • Resistance heating
  • smart city
  • social-aware management
  • Water heating
  • Water resources
  • water–energy–social nexus

ASJC Scopus subject areas

  • Modelling and Simulation
  • Social Sciences (miscellaneous)
  • Human-Computer Interaction


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