Energy Flow Optimization for Integrated Power-Gas Generation and Transmission Systems

Tao Ding, Yiting Xu, Wei Wei, Lei Wu

Research output: Contribution to journalArticlepeer-review

33 Scopus citations

Abstract

This paper first presents a comprehensive model of the gas system with detailed formulations on pipelines, short pipes, resistors, valves, compressors, and compressor stations. Furthermore, an optimal energy flow model is proposed for integrated power-gas generation and transmission systems. Specifically, on the generation side, gas-fired units couple the two energy systems as the power generation and gas sink; on the transmission side, gas compressor stations link the two energy systems as the power demand and gas transportation. However, gas flow equations are nonlinear and gas flow directions also need to be optimized. Logical programming and tailored piecewise linearization techniques are performed, leading to a mixed-integer linear program (MILP). Only a logarithmic number of binary variables are introduced to represent the nonlinear quadratic function, and thus, the MILP model can be solved very efficiently. Numerical results on four power-gas test systems demonstrate the effectiveness of the proposed approach.

Original languageEnglish
Article number8746198
Pages (from-to)1677-1687
Number of pages11
JournalIEEE Transactions on Industrial Informatics
Volume16
Issue number3
DOIs
StatePublished - Mar 2020

Keywords

  • Compressor station
  • gas transportation system
  • integrated power-gas systems (IPGS)
  • optimal energy flow

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