Results 21 to 30 of about 207,390 (122)
电力辅助服务市场下电采暖促进风电消纳的经济性分析 [PDF]
全球能源互联网, 2019 中国三北地区电网风电渗透率较高，同时存在高比例燃煤热电联产机组用于满足冬季巨大的采暖需求，导致其灵活调节能力极其有限，弃风问题十分突出。现有研究尚缺乏对各种类型电采暖负荷促进风电消纳的经济性评价研究，尤其是以电力辅助服务市场为背景，对不同调节特性电采暖负荷的经济性分析还鲜有报道。由此，以集中蓄热式电采暖、直热式电采暖和分布式电采暖三种典型电采暖负荷为研究对象，利用时序生产模拟方法，构建基于实时调峰辅助服务的电采暖负荷消纳弃风经济评估模型，以北方地区实际运行的电采暖项目数据为算例 ...
严干贵, 杨玉龙
doaj +1 more source
全球能源互联网, 2021 为有效提高多个区域综合能源系统（regional integrated energy system,RIES）的能源利用率,同时合理配置储能系统的容量,提出一种多RIES互联下的共享储能系统容量优化配置模型。首先,介绍了共享储能背景下多RIES运行框架,分析了共享储能系统的运行模式。其次,针对一类包含热电联产机组与热泵等设备的RIES,建立以共享储能系统作为上层、多个RIES作为下层的双层优化配置模型。其中,上层以共享储能系统盈利最大作为目标,利用遗传算法对共享储能的容量、充放电功率进行优化 ...
帅轩越, 王秀丽, 黄晶
doaj +1 more source
, 2020 热电联产系统从单一能源同时提取电能和热能,是一种高效的能源系统。随着燃料电池技术的发展,过去几十年电化学燃烧热电联产系统(如SOFC-GT,SOFC-ICE)得到了研究。在热电联产系统功率低于兆瓦量级时,ICE比GT更高效,成本效益更高,证实了SOFC-ICE系统的可行性和优势。为了使这种热电联产系统能够大规模地用于分布式能源系统,需要对SOFC-ICE系统进行更多的研究。但是,目前尚未定量分析化学能-电能-热能转换的过程,对如何优化系统效率,从而最大限度提高系统性能尚不清楚。本文对一种SOFC ...
尹海, 高金武, 程屾, 张健
core +2 more sources
Local Government Performance, Cost‐Effectiveness, and Use of the Web: An Empirical Analysis
Policy &Internet, Volume 11, Issue 4, Page 480-507, December 2019., 2019 This article empirically assesses the relationship between government use of the web, service performance, and cost‐effectiveness. It tests and challenges the assumption, prevalent in government thinking and in the Digital Era Governance (DEG) quasi‐paradigm, that the delivery of web‐based public services is associated with better outcomes.
Tom Nicholls
wiley +1 more source
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]
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
, 2023 西藏地处青藏高原腹地,海拔4 000 m以上的地区占全区总面积的85%,地热资源非常丰富。为实现地热资源的合理开采,结合国家双碳战略,对西藏地热资源的开发利用现状进行了全面梳理,提出了地热产业未来发展的建议。分析表明:西藏水热型和干热岩型地热资源存储量大、品质好,发电潜力巨大,而浅层地热资源主要分布在拉萨,可结合热泵技术为当地供暖。目前在地质勘查、技术改进、装备研发、运营管理等方面仍存在一些问题,需开展有机朗肯循环机组研发、搭建增强型地热系统实验平台,科学地开发深层地热能。研究表明 ...
王善民 +4 more
core +3 more sources
Biomass‐Derived Laser‐Induced Graphene: From Precursor Chemistry to Device Integration
Rare Metals, Volume 45, Issue 10, October 2026.ABSTRACT Laser direct writing provides a mask‐free route for converting suitable carbon‐containing precursors into patterned, porous, and conductive laser‐induced graphene (LIG) networks. Although LIG was initially demonstrated mainly using aromatic synthetic polymers, such as polyimide, biomass precursors introduce renewable feedstocks with highly ...
Wanjun Yin +10 more
wiley +1 more source
Rare Metals, Volume 45, Issue 9, September 2026.ABSTRACT With the rapid development of flexible electronics, there is an increasing demand for hydrogel‐based sensors with rapid fabrication, robust mechanical performance, and stable sensing behavior. Herein, a green and ultrafast self‐catalytic strategy is developed to fabricate a multifunctional hydrogel based on tannic acid‐coated cellulose ...
Jin Qian +6 more
wiley +1 more source
Unveiling Entropy‐Driven Hard‐Tough Synergy Mechanisms in High‐Entropy Carbonitride Ceramics
Rare Metals, Volume 45, Issue 9, September 2026.ABSTRACT High‐entropy ceramics manifested promise for extreme environments, yet their phase stability and mechanical synergy mechanisms remain elusive. Herein, entropy‐difference carbonitrides, including (TaTiV)CN, (TaTiVNb)CN, and (TaTiVNbHf)CN, were designed and consolidated via spark plasma sintering.
Long Zhao +6 more
wiley +1 more source
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT The development of lightweight, high‐attenuation, and broadband carbon‐based electromagnetic wave absorbers is hindered by the intrinsic trade‐off between impedance matching and dielectric dissipation. Herein, we report a facile and scalable synthesis of N‐doped lignin‐derived interconnected porous carbon (Nx‐LIPC) via hydrogen‐bond self ...
Bin‐Peng Zhang +7 more
wiley +1 more source