Results 71 to 80 of about 15,036 (258)
Selection and Design of Wind Turbine Foundation for an Offshore Wind Farm [PDF]
, 2023 [Introduction] From 2022, the state subsidies for offshore wind power has been fully withdrawn. The foundation of offshore wind turbines is the supporting structure of wind turbines and plays a crucial role in the safe operation of offshore wind farms ...
Baoyang LI
core +1 more source
How Many Floods Have Occurred in China in the Past Decade? A Perspective From Social Media
Earth's Future, Volume 13, Issue 4, April 2025.Abstract Global climate change has led to frequent and widespread flood disasters in China. Traditional flood disaster investigations mainly focus on major flood events, and small‐scale flood events are often overlooked. This study utilized the Sina Weibo social media platform to detect flood events in 370 cities in China from 2012 to 2023.
D. Shen +5 more
wiley +1 more source
水电科技随着现代科学技术水平的日益发展，电气工程自动化技术已然成为当前我国诸多领域实现现代化、技术化发展的重要技术支撑。风电作为我国近年来新兴新能源产业，风电电气工程自动化作为推进我国风电工程发展，提升风力发电自动化水平的核心，相关技术人员应当提高对风电电气工程自动化发展的重视，结合当前风电电气工程自动化的整体发展水平，及时发现并解决其发展过程中存在的弊端，为我国风力发电工程的有序发展奠定坚实的技术基础。文章首先简要阐释风力电气工程自动化的基本概述，重点分析当前我国风电工程自动化中存在的问题 ...
燊 林
semanticscholar +1 more source
Environmental disasters and ecomodernist beliefs: Insights from a quasi‐natural experiment
Policy Studies Journal, Volume 53, Issue 1, Page 201-231, February 2025.Abstract This article contributes to knowledge of how environmental disasters affect ecomodernist beliefs, i.e. the view that technology can solve environmental problems. Such beliefs in the general public are key to build mass support for environmental policies relying on large‐scale scientific solutions, but their stability is poorly understood.
Aksel Sundström
wiley +1 more source
基于热循环蓄热特性的电-热综合能源系统风电消纳策略 [PDF]
全球能源互联网, 2019 提出一种基于热循环蓄热特性的电-热综合能源系统风电消纳策略。首先构建了典型的电-热综合能源系统结构，分析了电热互补潜力；进而针对热网蓄热特性进行建模，分析了热网蓄热参与系统消纳风电的调节潜力；同时结合热电联产机组和热泵模型，构建了基于热网蓄热特性的电-热综合能源系统优化调度模型，以实现对热网蓄热的充放能管理。算例结果表明，该方法可使热电联产根据系统风电预测出力和电负荷需求调整自身出力，实现系统热负荷跨时段转移，最终达到提升系统风电消纳水平、降低系统一天内用能总成本的目的。
孟宪君 +6 more
doaj +1 more source
水电科技在双碳背景下，促进我国风电设备行业的发展至关重要。文中通过分析我国风电设备行业的现状和面临的挑战，提出了一系列促进其发展的对策与建议。这些对策包括加强政策支持与引导、提升技术创新能力、加强产学研合作、拓展国际市场合作等。通过实施这些对策，有望推动我国风电设备行业向更高质量、更可持续的发展方向迈进，为实现双碳目标贡献力量。
凡超 高
semanticscholar +1 more source
The Modern Language Journal, Volume 108, Issue 3, Page 741-770, Autumn (Fall) 2024.Abstract The study investigated the effect of task complexity (TC) on second language (L2) learners’ affective responses and writing performance and how these were modulated by cognitive and affective individual difference (ID) factors. A total of 412 Chinese 8th‐grade English‐as‐a‐foreign‐language learners completed a working memory (WM) test, a scale
Chengchen Li, Li Wei, Xiaojun Lu
wiley +1 more source
全球能源互联网随着风电、光伏的大规模并网，电力系统面临灵活调节能力不足的挑战。水电运行灵活，通过与风光协同规划、互补运行，能有效平抑新能源出力波动，保障并网消纳。水风光协同规划的关键之一在于对水电灵活调节能力进行准确建模，其中振动区约束不容忽略。为此，提出了考虑水电振动区的水风光协同规划模型。该模型首先利用组合数学技术将水电机组振动区合成为电站振动区；然后，综合考虑振动区约束及梯级水力联系、水力发电方程等各项约束，实现对水电系统的准确建模；最后，耦合水电系统与新能源、联络线等相关运行约束形成水风光协同规划模型 ...
燕志宇 +4 more
doaj +1 more source
Wind Turbine Modeling and Control Study based on LPV Model [PDF]
, 2015 风能是一种清洁可再生能源，其开发和利用越来越受人们的重视。风力发电机是利用风能发电的设备，近年来，风力发电机逐渐向高效率、高可靠性和大型化发展，使风力发电机的动态模型变得更加复杂。为了使风力发电机平稳可靠运行，提高发电效益，对风力发电机进行建模和控制很有必要。本文针对风力发电机的动态非线性特性，基于LPV模型辨识方法对风力发电机建模，后用辨识所得LPV模型设计MPC控制器，对风力发电机进行变桨距控制。论文的主要工作有： （1）讨论风力发电机的原理模型，分别分析各分块原理模型和一些常用的计算机仿真工具。 （
曹力仁
core
World Water Policy, Volume 10, Issue 3, Page 971-985, August 2024.Abstract Quality water is essential to people's health and social and economic well‐being. Evaluation of the quality of the water sources provides benchmark data on quality status and insights into the development of further protective measures. A laboratory‐based cross‐sectional study design was conducted in the diarrheal hotspot area of the North ...
Tsegahun Asfaw Abebe +5 more
wiley +1 more source