A hybrid stochastic-robust bidding model for wind-storage system in day-ahead market considering risk preference

IF 3.3 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Electric Power Systems Research Pub Date : 2024-10-10 DOI:10.1016/j.epsr.2024.111148

Sashuang Sun , YouBo Liu , Zhiyuan Tang , Mengfu Tu , Xili Du , Junyong Liu

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Abstract

In this paper, a novel hybrid stochastic-robust bidding model for a wind-storage system in the day-ahead (DA) market considering risk preferences is proposed. In the proposed scheme, the uncertainties of wind power and DA electricity price are firstly accounted for through stochastic optimization (SO) and robust optimization (RO) models. Then, to combine the advantages of both SO and RO models, based on the Hurwicz optimistic coefficient, a hybrid stochastic-robust bidding model is formulated for wind-storage systems, where wind farm bidders can select bidding strategies with different risk levels. Additionally, to reflect a more realistic operating cost of Energy Storage System (ESS), the ESS life degradation model based on equivalent full cycle counts is embedded into this hybrid model. To make the proposed non-convex hybrid bidding model computationally tractable, strong duality theory and piecewise linear functions are employed to transform it into a mixed integer linear programming (MILP) problem, which can be efficiently solved with the off-the-shelf optimization software. The simulation results demonstrate that the proposed bidding model effectively handles various scenarios and enables the selection of appropriate strategies under different risk preferences.

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考虑风险偏好的日前市场风力存储系统随机-稳健混合投标模型

本文提出了一种考虑风险偏好的新型混合随机-稳健竞价模型，用于日前（DA）市场的风力存储系统。在所提出的方案中，首先通过随机优化（SO）和稳健优化（RO）模型考虑了风力发电和日前电价的不确定性。然后，结合随机优化模型和鲁棒优化模型的优点，基于 Hurwicz 乐观系数，为风光储系统制定了随机-鲁棒混合投标模型，风电场投标人可选择不同风险水平的投标策略。此外，为了更真实地反映储能系统（ESS）的运营成本，该混合模型还嵌入了基于等效全周期计数的ESS寿命衰减模型。为使所提出的非凸混合投标模型在计算上具有可操作性，我们采用了强对偶理论和片断线性函数，将其转化为混合整数线性规划（MILP）问题，该问题可通过现成的优化软件高效解决。仿真结果表明，所提出的投标模型能有效处理各种情况，并能在不同风险偏好下选择适当的策略。

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来源期刊

Electric Power Systems Research 工程技术-工程：电子与电气

CiteScore

7.50

自引率

17.90%

发文量

963

审稿时长

3.8 months

期刊介绍： Electric Power Systems Research is an international medium for the publication of original papers concerned with the generation, transmission, distribution and utilization of electrical energy. The journal aims at presenting important results of work in this field, whether in the form of applied research, development of new procedures or components, orginal application of existing knowledge or new designapproaches. The scope of Electric Power Systems Research is broad, encompassing all aspects of electric power systems. The following list of topics is not intended to be exhaustive, but rather to indicate topics that fall within the journal purview. • Generation techniques ranging from advances in conventional electromechanical methods, through nuclear power generation, to renewable energy generation. • Transmission, spanning the broad area from UHV (ac and dc) to network operation and protection, line routing and design. • Substation work: equipment design, protection and control systems. • Distribution techniques, equipment development, and smart grids. • The utilization area from energy efficiency to distributed load levelling techniques. • Systems studies including control techniques, planning, optimization methods, stability, security assessment and insulation coordination.