Results 11 to 20 of about 522 (105)
在推动中国新能源高质量跃升式发展背景下,大规模新能源开发、汇集和远距离输送成为新能源建设的重要路径之一,特大型新能源基地成为未来的重要形态。由于缺少常规交流同步发电机组和可靠备用容量,特大型新能源基地稳定性挑战、新能源利用率与供电充裕性矛盾凸显,其形态结构及演化路径成为当前关切的热点问题。系统梳理了当前最新学术研究成果,研判特大型新能源基地未来可能的源网形态并做特征分析;进一步,面向特大型新能源基地系统强度弱、灵活性不足、源网协调运行矛盾突出等挑战,针对性提出源网协调规划 ...
张玮 +5 more
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Research progress of novel low-carbon technologies in cold storages [PDF]
This paper introduces the low-carbon quantitative index and energy consumption evaluation standard of cold storages, then systematically summarizes the novel low-carbon technologies and their application in cold storages from three aspects: refrigeration
HUO Yi-lin +3 more
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Key technologies and bottlenecks of multi-energy complementary DC microgrid for residual coalbed methane drainage in abandoned mine [PDF]
In terms of the collaborative utilization of residual energy and space resources in abandoned mines, under the framework of a green low-carbon multi-energy complementary system, a multi-energy complementary DC microgrid integrating wind-solar-gas-storage
Bin LI +7 more
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在落实“碳达峰、碳中和”目标过程中,储能对支撑以新能源为主体的新型电力系统负荷平衡起到重要作用,新型储能技术因建设周期短、选址灵活性高、调节能力强等优势受到更多关注。对比梳理了美国、欧盟、日本等主要国家/地区新型储能技术战略规划布局情况。针对新型储能技术中锂离子电池、钠离子电池、液流电池、金属空气电池、压缩空气储能、重力储能六大技术方向,利用文献计量和专利计量方法深度挖掘分析了国内外在该领域的前沿主题与创新能力。结果显示,中国在新型储能技术领域研发创新能力整体较强。从论文成果统计来看 ...
汤匀 +4 more
doaj +1 more source
面向工程应用的先进绝热压缩空气储能模型及先进㶲分析 [PDF]
先进绝热压缩空气储能(advanced adiabatic compressed air energy storage system,AA-CAES)仿真建模及分析是其工程实践的基础。然而,目前模型一般基于理想工况建立,分析结果与实际工况相偏差较大,无法指导工程应用。为此,在传统热力学模型基础上,考虑了空气流动阻力损失和能量转换设备损耗等因素,建立了面向工程应用的AA-CAES模型并以200 MW盐穴AA-CAES系统为例进行了分析。同时,对系统效率分析方法进行改进并对其进行了先进分析。结果表明 ...
王国华, 梅生伟, 张通, 陈来军
doaj +1 more source
Developing Flow Battery for Large Scale Energy Storage [PDF]
介绍一种新近发展迅速的大规模蓄电技术——液流蓄电池。叙述了其原理和优势、国内外发展现况和关键技术;分析了其作为风能与太阳能发电的蓄能、电网调峰、用电大户自备电源的应用前景;提出了发展我国液流电池的意见、建议。This article introduces a fast-developing large scale energy storage technology-flow battery, narrates its principles, advantages, development status ...
杨裕生 +5 more
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气体绝缘开关设备(GIS)是现代电力系统的重要组成部分,GIS内部一旦出现绝缘缺陷,极易造成设备故障,有效的局部放电检测手段可以提升GIS的安全性和可靠性。传统采样定理(奈奎斯特采样定理)对特高频局部放电信号进行采集时,会产生大量的无效信号,浪费存储空间,增加存储成本。压缩感知技术指出,信号在一定条件下能够以远低于奈奎斯特采样率的频率对信号进行采集,并且得到完整的信号。文中从压缩感知技术的原理出发,提出了一种新型局部放电采集方法——积分点火电路采集方法 ...
李腾 +4 more
doaj
为掌握科尔沁沙地南缘樟子松造林40多年对土壤水分、盐度的影响。以科尔沁沙地樟子松林地、草地2020年3月至2021年11月土壤、气象数据为基础,采用双累积曲线法(DCM)验证样地选取的合理性,利用空间代替时间法(STM)研究樟子松林地、草地土壤含水量、盐度的变化规律,以及与气象因子关系的差异。樟子松林地改变了土壤纵向剖面水分、盐度分布规律,二者均趋于正"S"形分布;林地有效提高土壤储水量 ...
郎明翰 +4 more
doaj
System Simulation Study on Performance of Non-Supplementary Combustion Liquid Compressed Air Energy Storage System [PDF]
ObjectivesCompressed air energy storage is a type of energy storage technology with large capacity, long cycle, low cost and high efficiency. Due to the strict requirements of gas storage chambers, gaseous compressed air energy storage cannot be widely ...
CHEN Cheng +9 more
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Review of bypass systems for various power generation units [PDF]
Bypass systems are important auxiliary systems in different types of power generation units. This study assesses and reviews the fundamental principles, components, classifications, capacities, and functions of bypass systems.
Wen LI +3 more
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