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针对云南某市35kV骨干网架薄弱的问题,重点研究了35kV格普线建设的必要性,接入系统方案和馈线截面的选择,电力通信以及方案的技术经济比较。结果表明,该方案实用性,适用性均较强,可以有效地解决35kV骨干网架薄弱的问题。 相似文献
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目前,水泥稳定碎石是较为常见的一种半刚性路面的基层材料,但由于其固有的一些特性,导致其表面产生裂缝。对水泥稳定碎石基层裂缝的产生机理进行分析,在此基础上对聚酯玻纤布和玻纤格栅两种材料进行抗裂性对比试验,并对这两种材料的防裂效果进行对比分析,结果表明聚酯玻纤布的防裂效果明显优于玻纤格栅。 相似文献
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华能营口热电厂取水工程二维水流数学模型采用嵌套网格的差分格式进行模拟计算,分析了不同取水位置对流场的影响。计算结果表明,该方法对取水口所在水域具有足够的网格分辨率,能够满足大范围海域边界条件验证的要求和工程所在河口水域流场的特征,同时又能满足工程局部水域计算精度的要求,具备边界控制准确、地形概化灵活、模拟精度合理和运算效率高等优点。 相似文献
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As the lack of guidancs for maintenance and repair of rail transit shield tunnels, this paper proposes a macroscopic method for grid assessment of shield tunnels. First, the tunnel serviceability index (TSI) is adopted as the tunnel condition assessment method and the results are compared with Chinese codes and the traditional fuzzy hierarchical comprehensive evaluation method. Second, based on the assumption that the factors affecting the conditions of the tunnels, such as the surrounding stratum environment, the structural overlying load and so on, are correlated spatially, the spatial variability theory is used for the grid assessment of shield tunnels. Finally, taking the Shanghai Rail Transit System as an example, the application results of the grid assessment method are described. © 2018, Editorial Office of "Modern Tunnelling Technology". All right reserved. 相似文献
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人工智能技术研究的目的在于解决大型复杂的现实问题,而解决这类问题已超出单个主体的能力,多Agent系统就是在这种背景下产生的,智能网格系统(Agent Grid System)从某种程度上讲就是一个多Agent系统.本文以智能网格系统为主题,给出一套智能网格模型. 相似文献
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ANSYS的建模方法和网格划分 总被引:12,自引:0,他引:12
随着计算机硬件升级更新速度的不断加决,有限元技术得到空前的发展,越来越多地应用于各个领域。而ANSYS软件具有建模简单,快速,方便的特点,因而成为大型通用有限元软件的代表。对有限元作了一个总体的介绍,简要叙述了ANSYS软件的主要特点,着重介绍了ANSYS软件的建模方法,并结合自己的实践经验谈了ANSYS软件的网格划分技巧。 相似文献
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This paper examines the possible placement of Energy Storage Systems (ESS) on an urban tram system for the purpose of exploring potential increases in operating efficiency through the examination of different locations for battery energy storage. Further, the paper suggests the utilisation of Electric Vehicle (EV) batteries at existing Park and Ride (P&R) sites as a means of achieving additional energy storage at these locations. The study achieves this through MATLAB modelling utilising captured GPS data and publically available information. This study examines the scenario of uni-directional substations with no interconnection between the overhead catenary for both directions of travel, and discusses the trade-offs between ESS size and required current limits.The results show the savings in both energy and basic CO2 emissions alongside the discussion of Return on Investment (RoI) that can be achieved through the potential installation of ESS at identified ideal locations along the tram network. Moreover, this may be extended to the use of EVs as stationary ESS sited at the existing P&R facilities. Further, the model may also be used to inform future infrastructure upgrades and potential improvements to air quality within urban environments. 相似文献
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随着移动计算和嵌入式技术的飞速发展,嵌入式自主导航车载系统正得到广泛的应用。本文提出了一种建立在信息网格平台上的车载交通信息服务系统。该服务系统后台依托上海交通信息网格这样一个强大的智能交通信息中心,为前台车载终端用户提供包括实时交通信息,动态路径决策,公共设施查询等高附加值的交通信息服务,克服了传统的自主导航车载系统为用户提供的信息服务单一,不能够提供实时动态交通信息的缺陷。本系统的车载终端硬件采用龙芯处理器,软件采用Linux操作系统和基于JAVA的开发环境。在对上海信息网格的关键技术和体系结构做了简要介绍之后,本文对前台车载终端系统的架构、硬件设施和关键功能的实现算法做了详细介绍,并给出了系统运行的效果和性能测试结果。 相似文献