Results 71 to 80 of about 4,689 (149)

风电齿轮箱的发展及技术分析

open access: yesJixie chuandong, 2008
风电产业的飞速发展促成了风电装备制造业的繁荣,风电齿轮箱作为风力机组中最重要的部件,倍受国内外风电相关行业和研究机构的关注。介绍了国内风电齿轮箱的发展现状,对风电齿轮箱的市场前景做了分析,在技术上从齿轮箱的设计、轴承、润滑系统、状态监测以及制造工艺等方面分析了国内风电齿轮箱存在的问题并提出建议。
王晶晶, 吴晓铃
doaj  

Numerical Simulation Study on Effect of Deflectors on Aerodynamic Characteristics of Horizontal Axis Wind Turbines [PDF]

open access: yes
ObjectivesDeflectors can modify flow distribution within wind farms, and their integration into existing wind farms is an effective method for improving wind energy capture by wind turbines.
CHEN Zhe   +7 more
core   +1 more source

Deep Reinforcement Learning-driven Cross-Community Energy Interaction Optimal Scheduling

open access: yes, 2023
In order to coordinate energy interactions among various communities and energy conversions among multi-energy subsystems within the multi-community integrated energy system under uncertain conditions, and achieve overall optimization and scheduling of ...
Bu, Fanjin   +5 more
core  

中东欧 视界 CEE HORIZON 2017年第10 期 | 总第 11 期 [PDF]

open access: yes, 2017
2017年9月,中国-中东欧基金国际顾问、德国前总统霍斯特·科勒(Horst Köhler)接受《中东欧视界》的专访,就欧洲一体化 ...

core   +3 more sources

Research on Dynamic Characteristics of Monopile Offshore Wind Turbine Tower Under Different Wind Speed Conditions [PDF]

open access: yes
Based on the ANSYS finite element software, the NREL 5 MW monopile offshore wind turbine tower system was modeled in 3D. The influence of different wind speeds on the dynamic characteristics of the tower structure was simulated and analyzed under the ...
CHEN Shangnian   +4 more
core   +1 more source

基于CNN‑LSTM‑Attention的风电机组状态监测与健康评估

open access: yesZhendong Ceshi yu Zhenduan
针对复杂多变的工作环境给风电机组状态监测带来的挑战,提出了一种基于深度学习和注意力机制组合的状态监测与健康评估方法。首先,将风电机组数据采集与监控( supervisory control and data acquisition,简称SCADA) 系统数据进行预处理;其次,将卷积神经网络(convolutional neural networks, 简称CNN)和长短期记忆网络(long short‑term memory, 简称LSTM)相结合提取数据的时空特征,并引入注意力机制(Attention)
doaj   +1 more source

风电测风仪雷电防护仿真模拟与试验研究

open access: yesDianci bileiqi, 2023
测风仪是风力发电机组的重要组成部分,安装在机舱上方靠近机舱尾部,因此暴露在强雷电磁场环境下。测风仪的安全运行关系着风机的正常运行。通过有限元仿真的方法对一款风电测风仪进行雷电附着点和雷电流损伤仿真模拟,并对该防雷系统的进行初始先导附着试验和电弧引入试验。将雷击试验与仿真结果相对比,初始先导附着试验表明接闪环的接闪效果不佳,测风仪存在被雷击的风险,试验结果与仿真结果一致;电弧引入试验表明,短冲击放电后雷击处接闪环有烧蚀,试验数据与仿真结果一致。下一步,根据仿真和试验结果对接闪器结构进行改进 ...
卢文   +4 more
doaj  

可再生能源发电经济激励制度比较研究——以风电为例 [PDF]

open access: yes, 2008
可再生能源因其成本难以与传统的石化能源相竞争,政府的激励政策是否得当对于该行业的发展至关重要。本文以风电行业为例,借鉴国外在价格优惠、财政补贴、配额、税费减免以及清洁发展机制方面相关制度的经验,对完善我国可再生能源发电经济激励制度提出了建议。“福建省新世纪优秀人才支持计划 ...
周敏, 朱晓勤
core  

Economic Analysis of Offshore Wind Power in Grid Parity Stage in Guangdong Province [PDF]

open access: yes
[Objective] Offshore wind power is one of the important ways to achieve carbon peaking and carbon neutrality in the future, and has a good development prospect.
Rui ZHAO, Ying CHEN
core   +1 more source

基于免疫记忆粒子群优化算法的风火联合系统的多目标优化调度

open access: yesGaoya dianqi, 2015
随着清洁可再生的随机性和间歇性风电大规模接入,其对电力系统发电调度的影响不容忽视。考虑风电机组的环境效益和并网对系统安全造成的影响,建立基于多目标机会约束规划模型,将燃煤机组发电成本最小、污染气体排放量最小作为目标,并计及系统的正、负旋转备用容量约束。使用风电出力的分布函数将随机模型转化为确定模型,采用模糊化处理技术将多目标优化转化为单目标优化,利用免疫记忆粒子群优化算法求解模型。最后,以修改后IEEE-30节点系统模型测试算例MATLAB仿真为例,通过算例仿真结果比较分析 ...
胡殿刚   +4 more
doaj  

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