An integrated multi-energy flow calculation method for electricity-gas-thermal integrated energy systems

Mengting Zhu, Chengsi Xu, Shufeng Dong, Kunjie Tang, Chenghong Gu

Research output: Contribution to journalArticlepeer-review

72 Citations (SciVal)


The modeling and multi-energy flow calculation of an integrated energy system (IES) are the bases of its operation and planning. This paper establishes the models of various energy sub-systems and the coupling equipment for an electricity-gas-thermal IES, and an integrated multi-energy flow calculation model of the IES is constructed. A simplified calculation method for the compressor model in a natural gas network, one which is not included in a loop and works in constant compression ratio mode, is also proposed based on the concept of model reduction. In addition, a numerical conversion method for dealing with the conflict between nominal value and per unit value in the multi-energy flow calculation of IES is described. A case study is given to verify the correctness and speed of the proposed method, and the electricity-gas-thermal coupling interaction characteristics among sub-systems are studied.

Original languageEnglish
Article number5
JournalProtection and Control of Modern Power Systems
Issue number1
Early online date23 Feb 2021
Publication statusPublished - 31 Dec 2021


  • Compressor
  • Integrated energy system
  • Integrated multi-energy flow calculation
  • Newton-Raphson
  • Per unit value and nominal value

ASJC Scopus subject areas

  • Safety, Risk, Reliability and Quality
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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