風力・太陽光発電の電力不足（エレクトリシティ・ドラウト）の気象要因と発生メカニズム：中国初の省級データセットからの知見
Meteorological drivers and triggering mechanisms of wind and solar electricity droughts: insights from China’s first provincial-level dataset (原題)
Bin Li, Juntao Zhang, Chuntian Cheng
🤖 gxceed AI 要約
日本語
本研究は、中国雲南省の2016〜2024年の風力・太陽光発電データを用いて、風力・太陽光の電力不足（WSED）を定義し、中国初の省級WSEDデータセットを構築した。分析の結果、風力と太陽光の電力不足はそれぞれ年間約9回と6回発生し、複合的な不足は年間約2回と稀であることがわかった。気象要因として、風力不足は風速の大幅な低下や気温低下、太陽光不足は日射量の大幅な低下や気温低下が主な引き金となることを定量的に示した。
English
This study constructs China's first provincial-level dataset of wind and solar electricity droughts (WSEDs) using 2016-2024 data from Yunnan province. It finds wind and solar droughts occur about nine and six times per year respectively, with compound droughts rarer at about twice annually. Meteorological triggers include wind speed deficits exceeding 55.5% below monthly averages for wind droughts, and radiation drops exceeding 65.2% for solar droughts, with temperature and precipitation modulating thresholds.
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
日本では、再エネ導入拡大に伴い、気象変動による出力変動リスクへの関心が高まっている。本研究のWSED分析手法は、日本の電力系統運用や再エネ事業者のリスク管理に示唆を与える。特に、北海道や東北など再エネ導入が進む地域での系統安定化策に応用可能である。
In the global GX context
This research provides a novel empirical framework for analyzing renewable energy output variability due to weather extremes, relevant to global energy transition planning. The methodology for identifying and characterizing WSEDs can inform grid operators and policymakers in other regions with high VRE penetration, such as Europe and parts of the US, on managing climate-related energy risks.
👥 読者別の含意
🔬研究者:Provides a quantitative method and dataset for analyzing wind and solar electricity droughts, useful for energy systems research.
🏢実務担当者:Offers insights for grid operators and renewable energy asset managers on anticipating and mitigating weather-induced output shortfalls.
🏛政策担当者:Highlights the need for resilience planning in power systems with high renewable penetration, informing energy security policies.
📄 Abstract（原文）
Extreme weather-induced wind and solar electricity droughts (WSEDs) can seriously disrupt the electricity balance in power systems with high shares of variable renewable energy (VRE). However, limited long-term VRE output data have prevented systematic investigation of WSED characteristics and quantitative identification of their meteorological drivers, particularly in countries such as China and India, where VRE deployment has only recently accelerated. Therefore, this study collected VRE output records from 2016 to 2024 for the Yunnan provincial power grid, one of China’s earliest large-scale VRE deployment regions. Based on a novel mathematical formulation of WSEDs, we established China’s first provincial-level WSED dataset. Analysis revealed that wind and solar electricity droughts occurred approximately nine and six times per year, respectively. During the study period, most identified events lasted 2–4 days, while compound droughts remained considerably rarer, occurring about twice annually. Wind electricity droughts were primarily triggered by wind speed deficits exceeding 55.5% below monthly averages or smaller deficits accompanied by temperature declines. Solar electricity droughts required radiation drops exceeding 65.2% below normal or milder deficits accompanied by temperature reductions of 15.9%, with precipitation further lowering triggering thresholds. The results provide new support for Yunnan Power Grid in China to defend against WSEDs.
🔗 Provenance — このレコードを発見したソース
- primary_source https://doi.org/10.1038/s44406-026-00043-7first seen 2026-09-07 00:11:54
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