Results 21 to 30 of about 337,529 (153)

基于随机生产模拟的火电机组深度调峰提升新能源消纳能力评估方法 [PDF]

open access: yes全球能源互联网, 2019
中国许多地区已经开展火电机组深度调峰辅助可再生能源消纳的试点工作,但基于场景的时序模拟方法在分析其调峰效果时受到各类不确定因素影响,难以覆盖所有的运行场景,导致中长期评估结果准确性不高。因此,时序方法不适用于缺少详细时序数据的电源容量规划。为此基于随机生产模拟方法,面向规划应用提出了一种火电深度调峰提升系统可再生能源消纳效果的评估方法。该方法建立了包括非供热火电机组、热电联产机组和风电等电源在内的供给侧概率模型,分析了在不同火电深度调峰方式下,系统负荷、可再生能源发电的概率特性变化 ...
马彦宏   +4 more
doaj   +1 more source

500 kV耦合负压换流型混合式直流断路器原理与研制 [PDF]

open access: yes全球能源互联网, 2018
多端柔性直流系统在分布式能源和直流负荷接入、网络柔性互联、电能质量等方面具有显著优势,成为未来电网的重要发展趋势。为了保证多端柔性直流系统安全稳定可靠运行,需要能够在数毫秒内开断故障电流的直流断路器。本文面向张北±500 kV柔性直流电网示范工程的应用需求,开展了500 kV直流断路器原理研究与样机研制。首先,提出500 kV耦合负压换流型混合式直流断路器系统方案,给出其拓扑结构、工作原理和控制逻辑;进而,设计基于电磁斥力操动机构和电磁缓冲机构的快速机械开关 ...
张翔宇   +7 more
doaj   +1 more source

构建区域能源互联网:理念与实践 [PDF]

open access: yes全球能源互联网, 2018
以智慧能源与互联网技术相结合为特征的能源互联网已成为国家“十三五”能源领域的重大战略性新兴产业。多能源系统是实现能源互联网规划建设的物理基础。文中首先介绍了能源互联网的三层架构与多能源系统的基本概念,在此基础上从能源互联网价值实现的角度阐述了能源互联网的规划优化及商业模式构建的思路。最后,以山西太原区域能源互联网的规划建设为实例,对太原区域能源互联网的建设背景、潜在价值、关键问题和难点几个方面进行了总结和展望。
黄武靖   +4 more
doaj   +1 more source

源荷储多类型灵活性资源协调的高比例可再生能源电源规划 [PDF]

open access: yes全球能源互联网, 2019
未来高比例可再生能源电力系统愿景下,具有波动性和不确定性的风/光等可再生能源作为主要能源供应者,给电力系统带来了巨大的灵活性需求,考虑单一类型灵活性资源提供调节能力的规划模型和以净负荷包络线为基础的电源规划方法将不再适用。引入灵活性指标量化评估源荷储多类型灵活性资源的调节潜力并作为优化决策变量纳入到规划模型中,从而建立以全周期投资成本最小化为目标的高比例可再生能源电源规划模型。通过电源投资决策、生产模拟和灵活性评估3个流程模块,实现单位投资改善灵活性指标最优的电源规划方案求解。最后 ...
徐唐海, 鲁宗相, 乔颖, 安军
doaj   +1 more source

风力发电清洁发展机制项目案例分析

open access: yes, 2006
将广东省风力发电技术应用作为清洁发展机制(CDM)项目案例,说明如何以广东省电源结构为基准线,应用增量成本分析方法计算风力发电这种CDM项目的单位碳减排成本,并对其进行敏感性分析。结果表明,风力发电这种CDM项目的单位碳减排成本为65美元/t,且当装机容量为50MW时,在3×7a(年)计人期内能使CO2减排量达到1 ...
马晓茜   +4 more
core   +5 more sources

干热岩发电技术及青海共和干热岩应用初探 [PDF]

open access: yes全球能源互联网, 2018
作为一种储量大、储热温度高、环境友好的地热资源,干热岩的开发越来越受到人们的重视。青海共和盆地干热岩资源埋藏浅、温度高,具有较高的开发利用价值,且易于实现开发利用。针对共和盆地干热岩的特点,本文建立了增强型干热岩系统联合内回热有机朗肯循环发电系统的模型,研究了不同工质应用于该系统的热力学特性,分析了关键参数对系统效率及净发电功率的影响,并探讨了干热岩发电在电网储能调峰中的应用前景,为未来的工程建设提供技术支持。
司杨   +5 more
doaj   +1 more source

Engineering Safety Through MOFs‐Based Nanocomposites: Advances in Design, Fabrication, and Deployment Across Emerging Domains

open access: yesRare Metals, Volume 45, Issue 11, November 2026.
ABSTRACT Ensuring uncompromised safety across interconnected domains is vital for global societal sustainability. Metal–organic framework (MOF)‐based nanocomposites, owing to their intrinsically tunable structures and broad functional versatility, represent a powerful class of materials for safety‐related engineering.
Rongfu Peng   +6 more
wiley   +1 more source

High‐Throughput Design of Efficient Dual‐Atom Catalysts Anchored on C2N for Electroreduction of CO and NH3 to Acetamide via Atomic Modeling and Machine Learning

open access: yesRare Metals, Volume 45, Issue 11, November 2026.
ABSTRACT Electrocatalytic C–N coupling technology provides a new approach for green acetamide synthesis, which is achieved via direct reduction of carbon monoxide (CO) and ammonia (NH3). However, efficient, stable catalysts urgently need to be developed, and their reaction mechanisms elucidated.
Haonan Li   +6 more
wiley   +1 more source

Deciphering Solvation Chemistry for Low‐Temperature Lithium‐Ion Battery Electrolytes: Mechanisms, Strategies, and Beyond

open access: yesRare Metals, Volume 45, Issue 11, November 2026.
ABSTRACT Low‐temperature performance degradation limits lithium‐ion batteries (LIBs) in extreme climates and specialized applications. Electrolytes govern Li+ transport and interfacial reactions, whereas their solvation chemistry controls ionic conductivity, desolvation kinetics, and interphase stability.
Yuqing Chen   +7 more
wiley   +1 more source

Overdischarge Induced Porous Graphite for Upcycling of Spent Lithium‐Ion Batteries

open access: yesRare Metals, Volume 45, Issue 11, November 2026.
ABSTRACT The upcycling of spent lithium‐ion batteries (LIBs) into high‐performance materials offers both economic and environmental benefits. In this study, the principle of battery discharge‐induced copper dissolution and deposition is applied to fabricate a graphite/nanocopper composite anode.
Yadong Wang   +13 more
wiley   +1 more source

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