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创新型人才是社会的稀缺资源,高等院校作为创新型人才的培养基地,其创新能力培养方式的选择尤为重要。以创新能力聚合体——创新团队为单元,用复杂适应系统(CAS)理论分析了创新团队的复杂性系统特征,提出了自组织创新团队管理模式培养大学生的创新能力,为国内相关院校提供参考。 相似文献
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用连锁故障搜索算法判别系统的自组织临界状态 总被引:5,自引:2,他引:5
根据复杂系统理论,电力系统在自组织临界状态下发生连锁故障的概率将会大大提高。为了判断某个实际电力系统是否处于自组织临界状态,进而提醒工作人员注意并采取一定措施,该文建立了基于交流潮流、考虑隐藏故障特性的连锁故障搜索算法,并利用该算法对华北电网进行了分析,得出了华北电网处于自组织临界状态的结论。分析了负载情况对系统发生连锁故障概率的影响,发现系统负载较均匀时发生连锁故障的概率将大大降低。 相似文献
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众多复杂系统在临界相变的临界点附近存在临界慢化现象。针对目前大多数理论确定电力系统自组织临界点的算法复杂、计算时间长或无法提供实际应用中最为关心的判别"阈值"信息的现状,将临界慢化理论用于确定电力系统自组织临界点,并基于Mann-Kendall检验方法确定自组织临界影响因素的临界阈值,方法简单、易于实现。CEPRI 36节点系统和甘肃酒泉实例系统的仿真分析结果与滑动T-检验、负荷损失柱状图、幂律尾分布K-S检验证明了以上计算方法的正确性和高效性,从而可为实时预防电力系统大停电并提前做出针对性的预防控制提供理论基础和技术依据。 相似文献
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复杂系统理论在电力系统中的应用研究展望 总被引:6,自引:0,他引:6
国内外电网在过去十多年来曾发生多次由连锁故障导致的大停电事故,引起人们对电网安全的高度重视,促使人们深入研究连锁故障传播机理。近年来,关于复杂系统理论,特别是复杂网络理论的研究取得了重要进展。应用复杂系统理论为分析和研究大停电和连锁故障传播机理提供了一种新的视角,有助于从整体上掌握电力网络的复杂性,并讨论相应的动力学特性。主要从复杂网络、自组织临界性以及电网与通信网络的耦合关系这3个方面对近年来电力系统连锁故障建模以及电网脆弱性分析方面的研究进行综述,并展望相关重要研究课题与方向。 相似文献
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针对当前综合能源可靠性评估方法大多是面向微网系统,难以从系统拓扑结构角度分析区域综合能源系统可靠性的问题,建立了一种基于复杂网络理论的区域综合能源系统可靠性评估方法。首先,以区域综合能源系统作为研究对象,介绍了区域综合能源系统的基本结构,并分析了复杂网络理论应用的可行性;其次,通过对复杂网络内距离参数的改进,构建了包含网络特性的加权复杂网络模型;在此基础上,从系统网络拓扑的角度提出了包含节点以及系统整体的可靠性评估指标。最后,通过构建实际测试算例,验证了方法的有效性与适用性。文章探索了复杂网络理论在区域综合能源系统可靠性评估中的应用,可为未来区域综合能源系统的规划建设提供可靠性层面的指导。 相似文献
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计及网络操作时电网任意复杂故障的简便计算方法 总被引:5,自引:2,他引:5
在计及网络操作的情况下,为计算电网任意复杂故障,首先将网络操作和任意复杂故障统一处理成对原网对称修正与不对称修正的组合,然后以操作支路和故障支路两侧节点为边界,将故障电网分解成对称修正网络,原网和不对称修正网络三大部分,基于叠加原理和多端口网络理论,导出了计及网络操作时计算电网任意复杂故障所需的全部公式。该方法的主要特点是:(1)计算过程中保持原网拓扑结构不变,计算过程简单;(2)对故障类型没有限制;(3)可自动适应网络拓扑结构变化;(4)既适用于相坐标也适用于序坐标。 相似文献
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Schou C.D. Frost J. Maconachy W.V. 《IEEE engineering in medicine and biology magazine》2004,23(1):110-118
The DHS recognizes that the progression from data to information to knowledge and subsequently to wisdom is a key to robust, reliable, and resilient biomedical informatics systems. The systems that enable this progression are increasingly complex. Frequently these systems are so complex that no one, including their designers, understands all their interactions and the implications of changes. This complexity combined with closely coupled systems operations creates critical systems that are both fragile and brittle. In the systems, failure of a single component may adversely affect the integrity, confidentiality, and availability of many critical systems. National security efforts cannot afford to place the security of the homeland on the backs of brittle systems. 相似文献
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Recently, numerous attempts have been made by researchers to understand the essence of complex phenomena (complex systems). In this paper, we consider biological systems in nature as being among the most complex systems. The purpose of this paper is to propose a method of realizing symbiotic phenomena such as mutual benefit, competition, and exploitation more generally than the Lotka–Volterra equation by using neural networks. © 2002 Wiley Periodicals, Inc. Electr Eng Jpn, 140(1): 77–88, 2002; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/eej.1172 Copyright © 2002 Scripta Technica 相似文献
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研究复杂电力系统的现场数据检测与信息融合、建模、控制、管理与决策及运行状态等特征,提出实现复杂电力系统的广义知识模型描述和智能建模策略,并介绍智能技术在广义知识模型和智能建模中的应用. 相似文献
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V. E. Vysotskii D. S. Nazarenko V. D. Privalov A. S. Gurtov 《Russian Electrical Engineering》2008,79(8):411-414
The results of developing a complex for digital-analog and physical simulations for studying autonomous power-supply systems are presented. The simulative structure contains real samples, physical models, digital models, and a matching device. Hardware and software simulation tools form a part of the complex of automated design for power-supply systems of autonomous objects. 相似文献
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针对一般复线性方程组的求解问题,文献[1]和[2]用类比于实的双共轭梯度法的方式,提出了复双共轭梯度法。然而到目前为止,还没有文献直接从复方程组出发,推导出此重要算法的计算公式。本文从复方程组出发,先给出两个基本定理,然后通过严格的计算,给出复双共轭梯度法各公式的来源和推导过程,同时讨论了它的收敛性,从而展现出此法的数学结构。 相似文献
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Yongseok Park 《Potentials, IEEE》2001,20(2):34-35
The advent of modern computer technology has enabled the development of many complex man-made systems. These include discrete manufacturing systems, communication networks, computer systems, traffic control systems, and inventory systems. A common characteristic of these systems is that they have discrete states (e.g., idle, processing, queue empty/full, and normal/faulty). Also, their state transition is triggered by events (e.g., part arrival/dispatch, alarms, commands, and timeout). For this reason, these systems are called discrete event systems or event-driven systems. As today's industry moves towards more complex, distributed and heterogeneous discrete event systems, there is a growing need for integration, consolidation, correlation, and distribution of the events coming from the systems. Event correlation achieves those objectives using methods borrowed mostly from artificial intelligence and formal methods. Historically, event correlation systems were developed for real-time monitoring of many classical mission-critical systems such as power plant and water/gas/oil distribution systems. Recently, it has been spreading into new areas such as messaging, network management and computer intrusion detection 相似文献