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arXiv 2602.19660cs.GTecon.TH
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战略存储的福利差距:通用界限与价格非线性性

The Welfare Gap of Strategic Storage: Universal Bounds and Price Non-Linearity

Aarhus University(奥胡斯大学)

Zhile Jiang, Xinhao Nie, Stratis Skoulakis

AI总结:

本文研究电力市场中电池储能操作的效率,比较中央计划者与分散利润最大化运营商的福利增益差异,证明线性价格函数下效率损失上限为4/3,并分析价格函数凸性对市场效率的影响。

摘要:

本文研究电力市场中电池储能操作的效率,比较中央计划者与分散利润最大化运营商的福利增益差异,证明线性价格函数下效率损失上限为4/3,并分析价格函数凸性对市场效率的影响。

英文摘要:

This paper studies the efficiency of battery storage operations in electricity markets by comparing the social welfare gain achieved by a central planner to that of a decentralized profit-maximizing operator. The problem is formulated in a generalized continuous-time stochastic setting, where the battery follows an adaptive, non-anticipating policy subject to periodicity and general convex constraints. We quantify the efficiency loss by bounding the ratio of the optimal welfare gain to the gain under profit maximization. First, for linear price functions, we prove that this ratio is tightly bounded by $4/3$. We show that this bound is a structural invariant: it is robust to arbitrary stochastic demand processes and accommodates general convex operational constraints. Second, we demonstrate that the efficiency loss can be unbounded for general convex price functions even in a canonical discrete-demand benchmark, so convexity alone is insufficient to guarantee market efficiency. Third, within the same benchmark we analyze monomial price functions, where the degree controls the curvature, and prove that the loss grows with the degree yet remains bounded by $2$. Finally, we extend the linear analysis to $n$ competing batteries, where a potential-game argument gives a unique equilibrium and an efficiency loss that decreases to $1$ as the number of batteries grows.

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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