Results 41 to 50 of about 2,993 (147)
, 2022 氢能在许多国家、研究机构和公司的政治和创新议程上占有重要地位。它是一种有巨大潜力的能源介质，有助于向碳中和能源过渡。然而，氢能主要来源于化石燃料，在技术和经济方面的挑战仍然相当大。本报告概述了当前国际上的氢能和燃料电池技术趋势 ...
Bian, Yue +4 more
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Gaoya dianqi, 2023 随着风电、光伏新能源装机容量和占比的不断提升，中国电网所面临的新能源全额消纳和电网调峰矛盾日益严峻。针对新能源对电网调峰特性影响问题，文中提出了一种新能源对电网调峰能力影响的量化指标；基于历史运行数据，首先分析提取新能源对电网净负荷曲线特征的影响特征，然后从新能源对负荷低谷值、峰谷差影响的角度提出了量化评估指标；最后，结合某省级电网运行数据，对新能源对电网调峰能力影响进行了评估分析，并利用所提指标研究了该省电网2021年的新能源消纳形势，结果表明 ...
金梦, 朱鑫要, 周前
doaj
配电系统运营商在配网电力市场发展进程中的角色与功能演化初探 [PDF]
全球能源互联网, 2020 分布式能源的增多进一步推进了电力系统配电侧的演化，而在系统权力逐渐下放的整体趋势下，配电市场的自主化程度也在逐步提升。然而，现有配电侧只能在大规模电网投资的前提下消纳、应用大量分布式能源。因此，需要引入分布式能源市场实现大规模分布式能源的并网，最大化分布式能源的价值。新兴配电侧市场的发展需要更多的配电系统管理以及进一步探究配电系统运营商（distribution system operator, DSO）的功能。现有DSO研究虽较完善地探究了未来DSO功能以及相关的系统管理角色 ...
单兰晴 +3 more
doaj +1 more source
Key Technologies of Large-Scale Compressed Air Energy Storage [PDF]
, 2023 [Introduction] As a long-term energy storage form, compressed air energy storage (CAES) has broad application space in peak shaving and valley filling, grid peak regulation, new energy consumption, auxiliary services, and other aspects, which is of great
Gang TAO +5 more
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Research on Optimal Allocation of Multi-Energy Complementary Project of Wind-Solar-Thermal Integration [PDF]
, 2022 Multi-energy complementary project of wind-solar-thermal integration can play a coordinating and mutually beneficial role among different generations, and is one of the implementation paths for safe and efficient use of renewable energy, and achieving ...
BI Sheng +5 more
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Research on Economic Scheduling of Active Distribution Networks With Inclusion of Data Center and Energy Storage [PDF]
ObjectivesTo improve the new energy consumption capacity of the power grid, reduce operational costs for power generation companies, and address issues such as increased network losses and reduced new energy consumption when large-scale renewable energy ...
LI Ji, MA Haoran, WANG Weiqing, YUAN Zhi
core +1 more source
Partitioning Method of Virtual Microgrid Based on Electrical Coupling Strength [PDF]
, 1978 © 2019 Automation of Electric Power Systems Press. With the fast development in the research of smart grid and Energy Internet, more and more distributed renewable energy and energy storage devices are connected into distribution networks, intelligent ...
Wu, C +5 more
core +4 more sources
全球能源互联网, 2020 火电灵活性改造，特别是降低机组最小稳定功率，可有效增强系统调峰能力，缓解弃风弃光问题。但灵活调节需求随风光电源、负荷和电网运行特性动态变化而难以准确估计，火电厂易陷入过度投资或无序竞争的两难抉择而延迟乃至放弃改造，导致实际改造容量远低于国家规划预期。因此，如何在保证可再生能源消纳目标前提下科学规划火电机组的灵活性改造容量成为地区能源管理部门和火电厂共同关注的问题。首先建立了包括机组改造成本、调峰市场交易成本、售电收益损失、深调状态发电成本增量和系统弃电成本五部分费用在内的火电机组灵活性改造广义成本模型 ...
徐昊亮 +4 more
doaj +1 more source
Research on Application of Hydrogen in Power Industry Under “Double Carbon” Circumstance [PDF]
, 2022 Hydrogen is a secondary clean energy which can be stored, moved and controlled. It is an ideal power energy carrier. The development and utilization of hydrogen as an energy source is an important means to tackle the climate change, ensure the national ...
ZHANG Yanhong, ZHU Kai
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Impact of race‐based customization on detection of fetal growth restriction
Ultrasound in Obstetrics &Gynecology, Volume 66, Issue 4, Page 480-485, October 2025.ABSTRACT Objective Fetal growth standards determine which fetuses are diagnosed with fetal growth restriction (FGR) and become candidates for enhanced fetal monitoring. Given the existence of race‐based differences in fetal and neonatal weights, we sought to determine the impact of race‐based customization of fetal growth curves on the antenatal ...
P. Ramesh, L. Lemon, J. C. Larkin
wiley +1 more source