计及气-热网络动态特性的多能耦合系统鲁棒机组组合模型

doi:10.6040/j.issn.1672-3961.0.2024.163

Abstract

Abstract: The inherent intermittency and uncertainty of renewable energy sources had a challenge to operation decisions of the system. To solve this problem, a robust unit commitment model with multi-energy coupled system considering gas-heat network dynamics was proposed. The mathematical expressions that characterize the dynamic characteristics of gas network and thermal network were established, which were incorporated into the robust unit commitment optimization model of multi-energy coupled system. A multi-dimensional uncertainty set from the perspectives of interval, time, and space to achieve flexible adjustment of wind power absorption boundaries was established. At the same time, concentrating solar power was used to replace the output of some thermal power units to further improve the utilization rate of renewable energy. The column-and-constraint generation algorithm was employed to transform the established min-max-min structure optimization model into a mixed-integer linear programming master-subproblem form for optimization, improving the solution speed of the model. The effectiveness of the proposed model and method was verified on 6-6-8 and 118-20-16 electricity-gas-heat systems, with results indicating that the dynamic characteristics of gas and heat networks can improve the economy of system operation and the utilization rate of renewable energy.

Key words: multi-energy coupled system, dynamic characteristics, renewable energy, unit commitment, column-and-constraint generation algorithm

CLC Number:

TM731

ZHANG Yumin, LI Jingrui, YANG Ming, JI Xingquan, SUN Donglei, XU Bo, WU Fucheng. Robust unit commitment model with multi-energy coupled system considering gas-heat network dynamics[J].Journal of Shandong University(Engineering Science), 2025, 55(5): 18-29.

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Robust unit commitment model with multi-energy coupled system considering gas-heat network dynamics

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