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91.
A potential solution to reduce greenhouse gas (GHG) emissions in the transport sector is the use of alternative fuel vehicles (AFV). As global GHG emission standards have been in place for passenger cars for several years, infrastructure modelling for new AFV is an established topic. However, as the regulatory focus shifts towards heavy-duty vehicles (HDV), the market diffusion of AFV-HDV will increase as will planning the relevant AFV infrastructure for HDV. Existing modelling approaches need to be adapted, because the energy demand per individual refill increases significantly for HDV and there are regulatory as well as technical limitations for alternative fuel station (AFS) capacities at the same time. While the current research takes capacity restrictions for single stations into account, capacity limits for locations (i.e. nodes) – the places where refuelling stations are built such as highway entries, exits or intersections – are not yet considered. We extend existing models in this respect and introduce an optimal development for AFS considering (station) location capacity restrictions. The proposed method is applied to a case study of a potential fuel cell heavy-duty vehicle AFS network. We find that the location capacity limit has a major impact on the number of stations required, station utilization and station portfolio variety. 相似文献
92.
The focus of this study is to jointly design charging stations and photovoltaic (PV) power plants with time-dependent charging fee, to improve the management of the coupled transportation and power systems. We first propose an efficient and extended label-setting algorithm to solve the EV joint routing and charging problem that considers recharging amount choices at different stations and loop movement cases. Then, a variational inequality problem is formulated to model the equilibrium of EV traffic on transportation networks, and an optimal power flow model is proposed to model the power network flow with PV power plants and optimally serve the EV charging requirements. Based on the above models for describing system states, we then formulate a model to simultaneously design charging stations, PV plants, and time-dependent charging fee. A surrogate-based optimization (SBO) algorithm is adopted to solve the model. Numerical examples demonstrate that the proposed SBO algorithm performs well. Additionally, important insights concerning the infrastructure design and price management of the coupled transportation and power networks are derived accordingly. 相似文献
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从绝缘配合的基本概念及TB/T 3251.1—2010《轨道交通绝缘配合第1部分:基本要求电工电子设备的电气间隙和爬电距离》的制定背景出发,阐述确定绝缘配合的因素,包括额定绝缘电压、过电压类别、污染等级、绝缘材料及海拔等,以及获得所需电气间隙和爬电距离的步骤,说明过电压防护仿真的作用和参数,解释绝缘试验中的实际问题,以便理解和执行TB/T 3251.1—2010。 相似文献
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轨道交通电工电子设备的绝缘配合(上) 总被引:1,自引:0,他引:1
从绝缘配合的基本概念及TBff3251.1—2010《轨道交通绝缘配合第1部分:基本要求电工电子设备的电气间隙和爬电距离》的制定背景出发,阐述确定绝缘配合的因素,包括额定绝缘电压、过电康类别、污染等级、绝缘材料及海拔等,以及获得所需电气间隙和爬电距离的步骤,说明过电压防护仿真的作用和参数,解释绝缘试验中的实际问题,以便理解和执行TB/T3251.1—2010。 相似文献
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太阳能游览船能量平衡及续航里程研究 总被引:3,自引:2,他引:1
以某太阳能游览船为对象,分析船机桨能量平衡关系,建立船舶运动能量计算模型,计算匀速航速下的能量消耗,根据电池输出能量与船舶航行消耗能量相等原则,预测游览船续驶里程。通过实际运行数据表明,该模型能够较为准确的计算消耗功率,有效地预测游船的续驶里程。 相似文献
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介绍了综合电力推进的概念、研究发展动态以及舰船电力推进电机的特殊性能要求,剖析了先进感应电机、轴向磁通永磁电机、横向磁通永磁电机、高温超导电机等高性能推进电机的性能特点、拓扑结构及关键技术.在分析推进电机研究应用现状的基础上对其未来发展进行了展望. 相似文献