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arXiv 2408.03409eess.SYcs.SY
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考虑极端事件的电力市场出清

Electricity Market-Clearing With Extreme Events

Tomas Tapia, Zhirui Liang, Charalambos Konstantinou, Yury Dvorkin

AI总结:

本文提出在电力市场出清中引入极端备用服务,并分别基于大偏差理论机会约束和加权机会约束建模,以较低成本协同优化电能与备用资源,从而提升可再生能源主导系统应对极端事件的可靠性。

摘要:

极端事件危及电力网络运行,导致超出设计范围的故障和大规模供电中断。现有的市场设计未能将极端和稀有事件的风险内部化并进行系统性评估。在极端天气事件期间高效维持以可再生能源为主导的电力系统的可靠性,需要协同优化系统资源,同时区分与预测条件之间的大规模/稀有偏差和小规模/频繁偏差。为弥补研究和实践中的这一空白,我们提出通过一项额外的备用服务来管理与极端天气事件相关的不确定性,该服务称为极端备用(extreme reserve)。极端备用的采购与电能和常规备用通过一个大偏差理论机会约束(LDT-CC)模型进行协同优化,其中大偏差理论(LDT)提供了一个数学框架来量化极端事件期间增加的不确定性。为缓解在LDT-CC模型下备用调度所伴随的高额附加成本,我们还提出了一种基于加权机会约束的大偏差理论模型(LDT-WCC)。该模型以更低的成本为电力系统应对极端事件做好准备,使其成为LDT-CC模型的一个较不保守的替代方案。所提出的市场设计在确保成本回收的同时实现了竞争性均衡。在一个示例系统和一个修改后的8区域ISO新英格兰系统上的数值实验凸显了所提出市场设计的优势。

英文摘要:

Extreme events jeopardize power network operations, causing beyond-design failures and massive supply interruptions. Existing market designs fail to internalize and systematically assess the risk of extreme and rare events. Efficiently maintaining the reliability of renewable-dominant power systems during extreme weather events requires co-optimizing system resources, while differentiating between large/rare and small/frequent deviations from forecast conditions. To address this gap in both research and practice, we propose managing the uncertainties associated with extreme weather events through an additional reserve service, termed extreme reserve. The procurement of extreme reserve is co-optimized with energy and regular reserve using a large deviation theory chance-constrained (LDT-CC) model, where LDT offers a mathematical framework to quantify the increased uncertainty during extreme events. To mitigate the high additional costs associated with reserve scheduling under the LDT-CC model, we also propose an LDT model based on weighted chance constraints (LDT-WCC). This model prepares the power system for extreme events at a lower cost, making it a less conservative alternative to the LDT-CC model. The proposed market design leads to a competitive equilibrium while ensuring cost recovery. Numerical experiments on an illustrative system and a modified 8-zone ISO New England system highlight the advantages of the proposed market design.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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