Journal of Modern Power Systems and Clean Energy

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Home > Archive>Volume 9, Issue 4, 2021 >963-967. DOI:10.35833/MPCE.2020.000244
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Conic Optimal Energy Flow of Integrated Electricity and Natural Gas Systems
Author:
Affiliation:

1.Department of Electrical Engineering, Northeast Electric Power University, Jilin 132012, China;2.Department of Electrical Engineering and Computer Science, The University of Tennessee, Knoxville, TN 37996, USA

Fund Project:

The authors would like to thank the support in part by National Key Research and Development Program of China (No. 2017YFB0903400), National Natural Science Foundation of China (Grant No. 52007026), and in part by CURENT, a U. S. NSF/DOE Engineering Research Center funded under NSF award EEC-1041877.

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    Abstract:

    In this letter, we propose a market-based bi-level conic optimal energy flow (OEF) model of integrated electricity and natural gas systems (IENGSs). Conic alternating current optimal power flow (ACOPF) is formulated in the upper-level model, and the generation cost of natural gas fired generation units (NGFGUs) is calculated based on natural gas locational marginal prices (NG-LMPs). The market clearing process of natural gas system is modeled in the lower-level model. The bi-level model is then transferred into a mixed-integer second-order cone programming (MISOCP) problem. Simulation results demonstrate the effectiveness of the proposed conic OEF model.

    表 1 Table 1
    图1 Bi-level conic OEF model.Fig.1
    图2 Topology of IEEE 9-bus power system with 7-node gas system.Fig.2
    图3 Generation costs and outputs of NGFGU with various load levels. (a) Generation costs. (b) Outputs of NGFGU.Fig.3
    图4 Topology of IEEE 118-bus power system with 14-node gas system.Fig.4
    图5 Comparison of results for ACOPF- and DCOPF-based bi-level OEF models. (a) Comparison of outputs of NGFGUs. (b) Comparison of nodal pressures.Fig.5
    图6 Approximate error results of SOC relaxation for natural gas system.Fig.6
    图7 Topology of IEEE 1354-bus power system with 4×48-node gas systems.Fig.7
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History
  • Received:April 19,2020
  • Online: August 04,2021

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