A Study on Integrated Construction of Luzhou Comprehensive Transportation Hub

The target of integrated construction of comprehensive transportation hub is to integrate the traffic resources,achieve butt joint of pan-regional transportation mode,and finally realize the"seamless connection"of the goods and"zero transfer"of the passenger traffic.Relying on the particularity of the geographical location and the convenience of the Yangtze River channel,Luzhou puts forth effort to build a comprehensive transport hub in Southern Sichuan and has made great efforts in traffic infrastructure construction.However,there are still some problems.Combining practice of Luzhou,using the advanced experience of foreign and domestic cities for reference,the paper pointed out that for the sake of constructing a comprehensive transportation hub,we need to build the traffic integration on the basis of the efficiency.Besides,the paper proposed the strategies for construction.

Energy hub-based optimal planning for integrated energy systems considering part-load characteristics and synergistic effect of equipment

Integrated energy systems(lESs)represent a promising energy supply model within the energy internet.However,multi-energy flow coupling in the optimal configuration of IES results in a series of simplifications in the preliminary planning,affecting the cost,efficiency,and environmental performance of IES.A novel optimal planning method that considers the part-load characteristics and spatio-temporal synergistic effects of IES components is proposed to enable a rational design of the structure and size of IES.An extended energy hub model is introduced based on the“node of energy hub”concept by decomposing the IES into different types of energy equipment.Subsequently,a planning method is applied as a two-level optimization framework-the upper level is used to identify the type and size of the component,while the bottom level is used to optimize the operation strategy based on a typical day analysis method.The planning problem is solved using a two-stage evolutionary algorithm,combing the multiple-mutations adaptive genetic algorithm with an interior point optimization solver,to minimize the lifetime cost of the IES.Finally,the feasibility of the proposed planning method is demonstrated using a case study.The life cycle costs of the IES with and without consideration of the part-load characteristics of the components were$4.26 million and$4.15 million,respectively,in the case study.Moreover,ignoring the variation in component characteristics in the design stage resulted in an additional 11.57%expenditure due to an energy efficiency reduction under the off-design conditions.

Integrated Layout and Transfer of Urban Rail Transit Hubs

This paper is engaged in the research of urban rail transit hub integration and transfer.Firstly,this paper focuses on the space division,the aggregation form of hub subsystems,the spatial layout of hub subsystems,and the design of integrated functions to achieve an integrated layout.In addition,this study also conducted a selection of transfer classification and transfer station layout of urban rail transit hubs,with the aims to promote the improvement of the functions of urban rail transit hubs,the rationality of transfers,and to improve the service quality of the hub system which meet the demand of the public travel.

A Study on Integrated Construction of Luzhou Comprehensive Transportation Hub

The target of integrated construction of comprehensive transportation hub is to integrate the traffi c resources, achieve butt jointof pan-regional transportation mode, and fi nally realize the “seamless connection”of the goods and “zero transfer” of the passenger traffi c.Relying on the particularity of the geographical location and the convenience of the Yangtze River channel, Luzhou puts forth effort to build acomprehensive transport hub in Southern Sichuan and has made great efforts in traffi c infrastructure construction. However, there are still someproblems. Combining practice of Luzhou, using the advanced experience of foreign and domestic cities for reference, the paper pointed out thatfor the sake of constructing a comprehensive transportation hub, we need to build the traffi c integration on the basis of the effi ciency. Besides, thepaper proposed the strategies for construction.

Prospects for key technologies of new-type urban integrated energy system

In recent years,primary energy consumption in China’s urban areas has increased rapidly,facing the problems of extensive use of energy,high energy consumption and insufficient intensified use of energy resources.Improving multienergy supply,increasing the proportion of clean energy and integrated energy efficiency are the main goals of urban development.The integrated energy system with multi-functional synergy and open trading will become one of the new directions for the development of new urban energy systems.This paper summarizes the main problems faced by the current towns and the characteristics of the new urban energy system,analyzes the development of new urban energy system from three aspects including energy interconnection hub infrastructure construction,energy management platform construction and energy value sharing,and forecasts the future development direction of new urban energy systems.

一个企业应用集成的设计模式:Hub

1.引言 随着信息技术的发展和企业信息化程度的提高,企业的业务发展越来越依赖于应用软件的功能的全面性和先进性,然而,越来越多的应用系统的运用,也给企业信息管理带来许多问题,如各应用系统由于采用的技术手段、开发时间、软件版本的不同,应用之间的功能集成和信息交换无法进行,地域与时空的分布带来信息交换不及时,业务流程不流畅等等.企业应用集成(EAI)就是为解决这样的问题而发展起来的,通过建立底层结构,来联系横贯整个企业的异构系统、应用、数据源等,满足应用内部系统之间无缝地共享和交换数据的需要.

宝中增建二线引入中卫铁路枢纽方案研究

在中卫铁路枢纽现状分析和规划线路研究的基础上,为实现宁夏自治区“五市同城化”动力集中型列车直通的功能需求,结合近、远期运量及相关线路建设时机,统筹考虑中卫枢纽点线能力协调,研究宝中二线引入中卫铁路枢纽方案。将宝中线、太中银线以及包兰线作为整体进行综合研究,分析宝中增建二线利用既有通道和新建通道两类四个方案,推荐运输组织顺畅、投资较省的利用太中银铁路黄河桥方案;围绕宝中增建二线的运输组织,研究了双线运输及双单线运输方式,推荐运输能力适应性强、运输组织顺畅的新建线路按下行方向运行方案,最后对潘营至余丁联络线于既有太中银黄河桥出岔及施工方案进行研究,提出可实施性强、投资节省的建设方案。结合工程建设条件,对新建线路从通道选择、运输组织、工程技术等方面进行多方案研究比选,为整合枢纽内线路设备资源、优化枢纽布局及运输组织提供参考。

Review:Research Progress for Electric Vehicle Hub Motor Driving Technology

Due to high efficiency,high controllability,high integration,lightweight,and other advantages,electric vehicle with hub motor driving technology has become an emerging trend of chassis technology.This paper concludes the current state⁃of⁃the⁃art of hub motor drive technologies.Firstly,it summarizes recent hub motor drive products and makes suggestions for hub motor drive schemes in different application scenarios.Then research on hub motor drive key technologies such as integrated design,thermal optimization,lightweight,and intensity optimization is investigated.Considering the high response accuracy and zero delay characteristic of hub motor driving system combined with advanced distributed dynamics control technology that can further improve vehicle performance,this paper also analyzes existing chassis dynamics control technologies of hub motor driving system.Considering the development trend of vehicle electrification,intelligentization,network connection,and current research,this paper makes some forecasts for hub motor drive technologies development in the conclusion.

电-气-氢-热-风-光耦合综合能源系统分层级Energy Hub建模方法

随着多能融合的不断深入,综合能源系统可实现大规模可再生能源消纳。由于综合能源系统广泛涉及电、气、氢、热、风、光等多种能源形式,经典Energy Hub方法与图论Energy Hub方法在建模效率与复杂度等方面均存在局限性。文章提出了分层级Energy Hub建模方法,将综合能源系统从能量输入到输出的耦合过程建模为分配层、转换层、集成层、储能层、网络层5个环节,全面涵盖了综合能源系统复杂多元的多能耦合关系,为输入与输出搭建桥梁,确保能量供需平衡。最后,通过算例分析论证了所提方法的优势与可行性,以及与传统方法在可再生能源消纳量上的提升。

基于GL850G芯片的USB HUB设计

对GL850G的主要特性、内部结构以及USB HUB的工作原理、硬件电路、PCB设计进行了介绍。采用GL850G级联方式设计一款具有10个USB下行端口的工业级USB2.0 HUB用于需要进行USB拓展的各类产品,并用ATTO Disk Benchmark测试软件对其性能进行了测试。

基于深度强化学习的电-气区域综合能源系统安全校正控制决策方法

电–气区域综合能源系统电、气相互耦合与影响,使得其安全校正控制难度大且对快速性要求高,为此,提出一种基于深度确定性策略梯度(deepdeterministicpolicy gradient,DDPG)算法的安全校正控制决策方法。首先,进行系统多能流与变量分析,建立安全校正控制的目标与约束条件。然后,构建基于DDPG的安全校正控制模型,设计目标奖励和各种约束条件奖励,提出结合基于综合灵敏度的安全校正知识经验设计目标奖励函数,使调整具有方向性,且目标奖励考虑能量枢纽(energy hub,EH)的经济效益及其可再生能源消纳;通过智能体离线训练,使其能够在线做出实时最优的安全校正控制策略,预先产生专家经验数据集存放于经验回放池,提高训练速度和收敛性。最后,通过含EH电–气区域综合能源系统仿真算例验证了所提方法的有效性。

基于奖惩阶梯型碳价机制的能源枢纽低碳优化策略

为进一步降低碳排放水平以及源-荷不确定性对系统运行的影响,文中提出一种基于奖惩阶梯型碳价机制和分布式模型预测控制(distributed model predictive control,DMPC)的能源枢纽(energy hub,EH)日前-日内-实时多时间尺度低碳优化调度策略。引入奖惩阶梯型碳价计算方法,构建EH日前低碳优化调度模型,并制定基于DMPC的日内滚动和实时调整的反馈闭环优化策略,降低源-荷预测误差,提高传统模型预测控制(model predictive control,MPC)的求解效率。在日内阶段,构建以阶梯型碳成本、运行成本和储能调整惩罚成本之和最小为目标的日内滚动优化模型;在实时阶段,分解整体优化问题,建立基于DMPC的多智能体实时调整模型。算例结果表明,文中所提策略能够有效提升系统经济效益,降低源-荷不确定性,实现EH的低碳经济、稳定可靠运行。

我国综合货运枢纽演进特征及发展对策

为加快建设现代化交通运输基础设施体系,推动降低全社会物流成本、提高经济运行效率,聚焦综合货运枢纽,通过梳理其发展历程,研究了综合货运枢纽的概念内涵、功能定位、演进特点,厘清其定义和空间边界,找出其发展中面临的难点。在此基础上,提出推进综合货运枢纽发展的思路,以及规划布局、建设要求、运营模式和协调机制四个方面的对策建议,旨在推动统一对综合货运枢纽的认识、形成发展合力,为构建现代化综合货运枢纽系统提供基础支撑。

地下综合枢纽换乘空间设施布局优化设计研究——以北京城市副中心站为例

随着城市交通出行需求日益增加以及对城市交通功能的再认识,多线换乘、功能复合的轨交枢纽建设进入高峰期。导向标识、商服设施、交通设施布局的合理性很大程度影响了客流组织效能和通行效率,同时枢纽空间的复杂性增大了设施布局的难度。文章以北京城市副中心站为例,采用Depthmap和Anylogic双重仿真模拟的方法定性、定量分析其换乘空间设施布局和客流组织情况,针对性提出优化策略并加以验证,为地下枢纽科学合理的设施布局和发展提供解决思路和理论支持。

铁路站房及站场空间一体化规划探索

西安东站位居白鹿塬西麓,处于西安市高铁东城核心位置,定位将其打造成为区域性的综合交通枢纽。项目贯彻新时代发展理念,以满足人民高品质、多层次的出行需求为根本目的。基于自然地形及规划发展要求,同时结合科学合理的规模测算,提出3种不同强度站台下架空车场布置方案。通过对场地内部建设条件及人流、车流组织进行分析,最终采用1—13站台双层架空站台方案的布局模式,紧凑布设各类接驳交通功能区及旅客换乘空间。充分利用站场架空空间建构一体化综合客运枢纽,实现接驳交通设施贴临建设、换乘功能空间直接连通,提高客流组织的便捷性、有序性和高效性。

高速列车对综合交通枢纽中地下车站结构振动的影响

以济南遥墙综合交通枢纽为工程案例,依托CRTSⅢ型板式无砟轨道建立车辆-轨道-车站结构振动耦合模型,利用时频域分析方法,分析了不同列车通过速度下轨道与车站结构间振动传递特征、不同减振垫层刚度下车站结构顶板振动响应特征和减振效果。结果表明:列车通过速度80 km/h时,钢轨、轨道板、车站结构侧壁、车站结构顶板振动加速度绝对值依次减小,车站结构顶板振动加速度级峰值出现在100 Hz;车站结构侧壁和顶板的分频最大振级、最大Z振级均随列车通过速度增加而增大,并且最大Z振级的增幅大于分频最大振级;不同列车通过速度下车站结构侧壁的分频最大振级和最大Z振级均大于顶板;降低减振垫层刚度可有效减小车站结构顶板最大Z振级;列车以不同速度通过各股道时可通过采用不同减振垫层刚度的轨道结构达到同等减振效果。

计及广义储能的园区综合能源系统低碳规划

以综合能源系统的低碳规划为目标,建立了考虑蓄电池电储能、楼宇热储能、数据中心热储能为广义储能的通用统一模型,量化分析了广义储能运行灵活性对园区综合能源系统低碳化转型的支撑作用。计及负荷长短期增长不确定性与碳排放约束,建立了以规划年扩建成本与运行成本之和为目标函数的综合能源系统低碳扩建模型;以园区各设备运行约束为基础,考虑广义储能的灵活性运行方式,建立了基于能源枢纽的园区运行模型;以江苏省某工业园区为测试算例,分析了广义储能资源的灵活性运行对园区扩建规划的影响。结果表明,广义储能资源可利用时间转移特性实现多能源跨时段高效利用,有效促进了新能源消纳,保证了综合能源系统的规划方案兼具经济性与环保性。

空港综合交通枢纽建筑智能化机房规划

空港综合交通枢纽建筑实质上是由多个单体构成的建筑群或园区,各单体功能性较强,且单体的智能化机房之间联系紧密,这与项目自身的管理需求直接相关。以某大型机场为例,对智能化机房的规划进行深入剖析,通过信息技术与智能系统的集成,合理设计和布局机房,以支持数据处理、网络通信和系统监控,提升机场运营效率、保障安全性与服务质量。

基于系统动力学模型的综合货运枢纽绿色转型机理及实施路径研究

为助力加快实现交通运输行业绿色转型,以综合货运枢纽为着眼点,探索其绿色转型和高质量发展的实施方案。首先,识别出政策、技术创新、管理效率等3个关键因素,揭示综合货运枢纽绿色转型的动态支撑机理。然后,基于对各因素的分析,将环保政策松紧系数、科技投入系数、污染物排放系数作为变量,构建包含枢纽物流供应子系统、枢纽物流需求子系统、节能减排子系统的系统动力学模型。再以四川省某综合货运枢纽为例进行模拟,验证模型的有效性和实用性。最后,从政策标准、技术组合和管理效率等3个方面提出绿色转型路径。研究结果显示:(1)表征政策因素的环保政策松紧系数对节能减排有显著正面影响,但同时限制了枢纽总产值的提升,需关注政策出台时机和松紧度;(2)表征科技研发投入的科技投入系数对节能减排有显著正面影响,既减少碳排放,又不影响枢纽总产值提升,且存在后发优势;(3)表征绿色技术设备投入效果的污染物排放系数对节能减排有显著正面影响,但提示资金投入与减排效果并不是简单的线性关系,需重点关注绿色技术设备的组合优化,做好技术与业务流程的融合;(4)表征管理效率的排放治理投资系数呈现先增后减的趋势,说明需在枢纽结构、招商、人力、资金等方面设定合理区间以确保环保投入产出效果。通过动态模拟综合货运枢纽绿色转型机理,为地方政府因地制宜出台相关政策,以及为货运枢纽运营企业采取科学有效的技术手段和管理措施提供了理论依据。

基于BIM的大型交通枢纽工程机电安装技术应用

大型交通枢纽工程机电安装体量广,专业管线交叉多,功能设备复杂,传统机电安装工作模式无法保障施工质量和效率。因此,本研究将BIM技术与新型施工技术相结合,用高效、绿色的智慧施工技术来实现正向BIM协同设计和工厂化预制。根据新建长沙西站综合交通枢纽项目机电安装工程特点,系统阐述了BIM技术在管综深化、预制内保温风管、机电消声减振和工厂化支吊架等方面的应用,对今后类似项目的机电安装工程具有较高参考价值。