Efficient dynamic compressor optimization in natural gas transmission systems

Terrence W.K. Mak, Pascal Van Hentenryck, Anatoly Zlotnik, Hassan Hijazi, Russell Bent

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

29 Citations (Scopus)

Abstract

The growing reliance of electric power systems on gas-fired generation to balance intermittent sources of renewable energy has increased the variation and volume of flows through natural gas transmission pipelines. Adapting pipeline operations to maintain efficiency and security under these new conditions requires optimization methods that account for transients and that can quickly compute solutions in reaction to generator re-dispatch. This paper presents an efficient scheme to minimize compression costs under dynamic conditions where deliveries to customers are described by time-dependent mass flow. The optimization scheme relies on a compact representation of gas flow physics, a trapezoidal discretization in time and space, and a two-stage approach to minimize energy costs and maximize smoothness. The resulting large-scale nonlinear programs are solved using a modern interior-point method. The proposed optimization scheme is validated against an integration of dynamic equations with adaptive time-stepping, as well as a recently proposed state-of-the-art optimal control method. The comparison shows that the solutions are feasible for the continuous problem and also practical from an operational standpoint. The results also indicate that our scheme scales to large gas transmission networks with more than 6000 kilometers of total pipeline.

Original languageEnglish
Title of host publication2016 American Control Conference (ACC 2016)
EditorsKatie Johnson
Place of PublicationPiscataway NJ USA
PublisherIEEE, Institute of Electrical and Electronics Engineers
Pages7484-7491
Number of pages8
ISBN (Electronic)9781467386821, 9781467386807
ISBN (Print)9781467386838
DOIs
Publication statusPublished - 2016
Externally publishedYes
EventAmerican Control Conference 2016 - Boston, United States of America
Duration: 6 Jul 20168 Jul 2016

Publication series

NameProceedings of the American Control Conference
PublisherIEEE, Institute of Electrical and Electronics Engineers
Volume2016-July
ISSN (Print)0743-1619
ISSN (Electronic)2378-5861

Conference

ConferenceAmerican Control Conference 2016
Abbreviated titleACC 2016
Country/TerritoryUnited States of America
CityBoston
Period6/07/168/07/16

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