共查询到19条相似文献,搜索用时 78 毫秒
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随着云计算数据中心的快速发展,其高能耗问题日益凸显。利用虚拟化技术,数据中心可以实现物理资源共享,承载多个虚拟网络或虚拟数据中心,对业务负载进行整合与迁移,休眠空闲物理设备,提高物理资源利用率和运营收益,并降低能耗。当前数据中心的虚拟网络映射仍面临算法复杂度高、实时部署难等问题,随着未来分布式数据中心的大量部署建设,多数据中心协作的虚拟网络映射问题也越发重要。文章总结了现有数据中心虚拟网络和虚拟数据中心映射问题的典型研究工作,分析了关键技术与未来潜在的研究和应用方向,认为数据中心虚拟网络映射技术在未来分布式数据中心高能效协同运营模式中具有重要意义。 相似文献
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《电力信息与通信技术》2015,(8)
为实现对配网抢修的全过程管理,重庆供电公司结合配网抢修业务工作实际情况,组织开展了配网抢修管控平台建设。该平台与营销、生产等多个系统集成,通过企业服务总线、数据中心等从各系统提取设备基础台账、电网空间信息和95598工单信息,实现了抢修指挥、故障研判、保电管理、计划停电管理和统计分析等功能。应用结果表明,该系统可以为智能配网管理提供决策支持,优化配网抢修资源的调配方式,有效推进配网抢修管理工作的标准化水平。 相似文献
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《南方能源建设》2018,(Z1)
[目的]为推动电力行业的数据中心的新理论和新技术发展,为电力行业的数据中心学者和建设者提供学术交流平台,第一届中国电力行业数据中心高峰论坛于2018年6月13日在广州召开。[方法]会议由中国工程建设标准化协会信息通信专业委员会数据中心工作组联合中国能源建设集团广东省电力设计研究院有限公司共同主办,广州供电局通信网络有限公司协办。[结果]会议着眼于中国电力行业数据中心现状、开放和创新技术、投融资和持续发展,探讨了当前电力行业数据中心未来发展路线,促进了电力数据中心行业学者和建设者间的交流和合作。[结论]会议对推动我国电力行业的数据中心的发展具有重要意义。 相似文献
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针对现有云计算环境下国网数据中心资源调度存在的调度效率低、能源消耗高等问题,文章提出了一种基于改进蚁群算法的算力灵活迁移优化算法。首先构建国网云数据中心的算力迁移模型,对数据中心的资源调度能耗进行建模。然后通过引入细菌觅食算法改进基本蚁群算法的信息素初始化,并重新设计了启发函数和信息素挥发因子。仿真实验结果表明,与现有模型相比,文章的算法能够求出更优的算力资源调度方案,在减小任务完成时间的同时降低了国网数据中心36.6%的能耗。 相似文献
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《电力信息与通信技术》2015,(4)
云计算及相关技术的推广应用,推动了数据中心软硬件资源的标准化和虚拟化。细粒度的资源管理模式给电力数据中心的运维管理带来了新的变化,并对相应的技术和装备支撑提出了新的需求。为了能够快速适应运维模式的变化,文章聚焦资源管理,旨在提出一种电力云数据中心的运维管理框架,并阐述了服务管理、能力管理及相应的审计和安全等支撑相互协作的管理模式,进而解决运维过程中最为关心的问题。 相似文献
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An accurate forecast of solar irradiation is required for various solar energy applications and environmental impact analyses in recent years. Comparatively, various irradiation forecast models based on artificial neural networks (ANN) perform much better in accuracy than many conventional prediction models. However, the forecast precision of most existing ANN based forecast models has not been satisfactory to researchers and engineers so far, and the generalization capability of these networks needs further improving. Combining the prominent dynamic properties of a recurrent neural network (RNN) with the enhanced ability of a wavelet neural network (WNN) in mapping nonlinear functions, a diagonal recurrent wavelet neural network (DRWNN) is newly established in this paper to perform fine forecasting of hourly and daily global solar irradiance. Some additional steps, e.g. applying historical information of cloud cover to sample data sets and the cloud cover from the weather forecast to network input, are adopted to help enhance the forecast precision. Besides, a specially scheduled two phase training algorithm is adopted. As examples, both hourly and daily irradiance forecasts are completed using sample data sets in Shanghai and Macau, and comparisons between irradiation models show that the DRWNN models are definitely more accurate. 相似文献
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《全球能源互联网(英文)》2022,5(6):675-691
With the large-scale application of 5G technology in smart distribution networks, the operation effects of distribution networks are not clear. Herein, we propose a comprehensive evaluation model of a 5G+ smart distribution network based on the combination weighting and cloud model of the improved Fuzzy Analytic Hierarchy-Entropy Weight Method (FAHP- EWM). First, we establish comprehensive evaluation indexes of a 5G+ smart distribution network from five dimensions: reliable operation, economic operation, efficient interaction, technological intelligence, and green emission reduction. Second, by introducing the principle of variance minimization, we propose a combined weighting method based on the improved FAHP-EWM to calculate the comprehensive weight, so as to reduce the defects of subjective arbitrariness and promote objectivity. Finally, a comprehensive evaluation model of 5G+ smart distribution network based on cloud model is proposed by considering the uncertainty of distribution network node information and equipment status information. The example analysis indicates that the overall operation of the 5G+ smart distribution network project is decent, and the weight value calculated by the combined weighting method is more reasonable and accurate than that calculated by the single weighting method, which verifies the effectiveness and rationality of the proposed evaluation method. Moreover, the proposed evaluation method has a certain guiding role for the large-scale application of 5G communication technology in smart distribution networks. 相似文献
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《全球能源互联网(英文)》2020,3(3):272-282
With the rapid development of technologies such as big data and cloud computing, data communication and data computing in the form of exponential growth have led to a large amount of energy consumption in data centers. Globally, data centers will become the world’s largest users of energy consumption, with the ratio rising from 3% in 2017 to 4.5% in 2025. Due to its unique climate and energy-saving advantages, the high-latitude area in the Pan-Arctic region has gradually become a hotspot for data center site selection in recent years. In order to predict and analyze the future energy consumption and carbon emissions of global data centers, this paper presents a new method based on global data center traffic and power usage effectiveness (PUE) for energy consumption prediction. Firstly, global data center traffic growth is predicted based on the Cisco’s research. Secondly, the dynamic global average PUE and the high latitude PUE based on Romonet simulation model are obtained, and then global data center energy consumption with two different scenarios, the decentralized scenario and the centralized scenario, is analyzed quantitatively via the polynomial fitting method. The simulation results show that, in 2030, the global data center energy consumption and carbon emissions are reduced by about 301 billion kWh and 720 million tons CO2 in the centralized scenario compared with that of the decentralized scenario, which confirms that the establishment of data centers in the Pan-Arctic region in the future can effectively relief the climate change and energy problems. This study provides support for global energy consumption prediction, and guidance for the layout of future global data centers from the perspective of energy consumption. Moreover, it provides support of the feasibility of the integration of energy and information networks under the Global Energy Interconnection conception. 相似文献
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目前,配电网运行评估主要集中在状态等级的确定方面,对发展趋势的分析较少,导致无法识别运行过程中的薄弱环节。同时,考虑到集对分析法的联系度采用线性处理进行量化分析,结果难以客观反映工程实际状况。为此,结合集对分析和云模型构建中压配电网运行状态评价模型,并引入博弈论构建最优组合权重模型。将两种模型的结果加权确定出综合云联系度,生成对应的状态云图以掌握配电网的运行状态。再根据各指标偏联系数的发展态势,识别出配电网运行过程中的潜在风险。最后,以宜昌市内3个地区的运行数据为例验证模型的合理性,评估结果与实际运行情况相符。同时,各地配电网的置信因子均小于0.01,验证了模型的有效性。研究成果可用于指导工程实践。 相似文献
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云计算技术发展迅猛,数据中心作为重要基础设施,规模发展到前所未有程度,因此产生了巨大能源消耗,文章研究数据中心中能源效率与资产价值2个指标之间的关系,最终达到减少能源和资产浪费的目的。通过分解指标内容,寻找2个指标的特征和联系,研究了能源密集型、资产密集型特征。研究结果发现2个指标看似矛盾,其实从生命周期角度可组合使用。最终得出结论,选择技术方案时,不仅要计算电源使用效率(Power Usage Efficiency,PUE)指标,还要综合考虑生命周期成本,发挥最大资产价值,使高效能数据中心广泛推广。 相似文献
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