The Effects of Relaxing Price Limits on Spot Electricity Markets Under High Renewable Penetration
再生可能エネルギー高普及下におけるスポット電力市場の価格制限緩和の効果 (AI 翻訳)
Nan Jiang, Zeyuan Liu, Zhu Li, Xian Zhang, Ziming Ma, Yuanji Cai, Hongye Guo
🤖 gxceed AI 要約
日本語
本論文は、既存の価格制限メカニズムが再生可能エネルギー高普及下で電力の希少価値を正確に反映できない問題に対して、平均価格制約のもとでスポット価格制限を緩和する新しい市場清算モデルを提案する。シミュレーションの結果、価格制限緩和がピーク・バレースプレッドを拡大し、石炭火力や蓄電池のシステム調整参加を促進し、再生可能エネルギー利用率を5.6%向上させることを示した。また、純エネルギー価値から柔軟な調整価値への移行を促進し、資源配分を最適化するコスト移転比率1.32%を達成した。
English
This paper proposes a power spot market clearing model that relaxes price limits while constraining the average grid price, addressing the failure of narrow price limits under high renewable penetration. Using IEEE 30-bus system and data from a Chinese province, simulations show that relaxing price limits expands peak-valley spreads, encourages coal units and storage to participate in regulation, and increases renewable utilization by 5.6%. It also achieves a cost-transfer ratio of 1.32%, facilitating a transition from pure energy to flexible regulation value.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
本論文の価格制限緩和と平均価格制約のアイデアは、日本の容量市場や再生可能エネルギー統合におけるスクラシティプライシング設計に示唆を与える。日本の電力市場でも高再生可能エネルギー比率下での適切な価格シグナルの重要性が増しており、特に蓄電池や火力の運用最適化に活用できる可能性がある。
In the global GX context
This paper provides a concrete market design solution for regions with high renewable penetration, such as the EU and parts of the US, where price caps can distort scarcity signals. The 'constrained average price' approach offers a compromise between free pricing and market stability. The findings support the global trend of market reforms to accommodate variable renewables and enhance flexibility through price signals.
👥 読者別の含意
🔬研究者:Novel market clearing model integrating capacity and certificate revenues; useful for modeling high-RE market design.
🏢実務担当者:Power market operators and utilities can apply the 'constrained average price' method to design spot market rules that incentivize flexibility and RE integration.
🏛政策担当者:Regulators considering price limit reforms should note the demonstrated benefits on RE utilization and cost transfer ratios.
📄 Abstract（原文）
In the context of high renewable energy (RE) penetration, existing narrow price-limit mechanisms often fail to accurately reflect the scarcity value of electricity. This paper proposes a power spot market clearing model that balances the revenues of multiple market participants, including coal-fired units, RE entities, and energy storage systems (ESS). First, the methodology integrates RE Green Certificate (GC) revenue and traditional capacity compensation to construct a comprehensive bidding model covering energy, certificates, and capacity remuneration. Second, an innovative approach-characterized by ‘constraining the average grid-wide price while relaxing spot price limits’-is introduced. By utilizing the average electricity price as a benchmark constraint, the study quantitatively analyzes the incentive effects of price-limit relaxation on participant bidding behavior. Simulation results, based on the IEEE 30-bus system and empirical data from a Chinese province, demonstrate that relaxing price limits effectively expands peak-valley spreads and releases critical scarcity signals. Furthermore, the negative price mechanism incentivizes coal-fired units and ESS to proactively participate in system regulation, enhancing the RE utilization rate by 5.6%. Finally, the relaxation of price limits facilitates a transition from pure energy value to flexible regulation value, driving a cost-transfer ratio of 1.32% and significantly optimizing resource allocation within the modern power system.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.1109/icgeps69938.2026.11522186first seen 2026-07-24 06:43:24
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