电动公交车换电站-电池充电站优化规划

充电设施的规划与建设是解决电动汽车发展瓶颈的重要问题。电动汽车在公共交通领域发展迅速,并广泛采用换电模式。文中充分考虑了电动公交汽车换电电量需求和充换电行为,提出了一种换电站—电池充电站建设模式,并给出了相应的优化规划方法。该方法首先使用近邻传播聚类算法对换电需求点进行空间聚类,以确定电池充电站的站址和规模,并利用化石燃料与电能的热值关系,将当前柴油公交车日消耗能量折算成电能以确定换电电量需求。然后,利用排队论方法对电池充电站内的工作情形进行建模,提出以拒绝服务率为主要约束,以综合建设成本最小为目标的优化模型。最后,以某城市实际统计数据为例给出了该市公交汽车换电站、电池充电站以及其充电设备、换电设备、电池的规划方案,为电动公交车充、换电站的实际规划提供参考。

基于红外线热成像仪设备在蓄电池充电站中的应用

本文研究了海康热成像在蓄电池充电站中的应用,同时介绍了热成像设备与电气控制联动控制的构筑管理。热成像与电气联动控制的构筑是保证蓄电池充电站安全的关键,监控中心和现场电气柜设备通过人机界面实现远程控制和操作。蓄电池供电采用集中供电方式,并应用了热成像高温保护的控制方式,通过反馈高温信号与设定值的比较,从而实现了现场供电的控制。结论表明:蓄电池充电站使用了热成像与电气控制的联动,大大提高了现场蓄电池充电的安全牲能,最终提前预防了车间内高温导致火灾的隐患,工业热成像具有控制方式灵活,设置简单,稳定性能良好等特点。

燃料电池充电站加速机场电气化

环球氢能公司(UH2)与机场地面支持设备制造商JBT航空技术公司(JBT AeroTech)签署了一项联合开发协议,宣布将共同设计和开发H2AmpCart,这是一种由氢燃料电池供电的移动电池充电站,用于现有的机场电气化地面支持设备(GSE),包括电动牵引车、航梯车、行李转运车等。

建设电动汽车电池更换式充电站的可操作性分析

电池更换充电模式在当前的科技水平条件下成为电动汽车推广普及的快捷方式。本文根据前人的研究成果,从现实可操作性的角度对电池更换式充电站的建设、管理、标准化等环节作出分析,并在充电时间、电池流通管理、充电安全等方面进行了比较论证,证明了电池更换式充电站的现实可操作性较强。

基于双网络结构的电动汽车充换电网络二次分区规划方法

依据实际电网运行和交通运行情况,提出了基于双网络结构的电动汽车充换电网络的二次分区规划方法。鉴于电池集中充电站同时具备电网负荷和充换电网络上级供应源的2种性质,以其为核心构建了电力网络和充换电网络相连接的双网络结构。在此基础上,以电源辐射面积进行一次分区,并通过交通负荷网格化预测一次分区负荷;其次,根据电压偏移情况对一次分区内电池集中充电站选址;然后,基于一次分区结果根据交通情况进行二次分区,并利用改进粒子群算法在二次分区内对电动汽车换电站选址;最后,通过某城市充换电网络规划实例验证了这种方法的合理性。

Evaluation of a PV Powered EV Charging Station and Its Buffer Battery

This research analyses the operation of a solar PV powered electric vehicle charging station with energy storage, that has been developed and demonstrated at the University of California--Davis, West Village, the largest planned zero-energy consumption community in the U.S. The intelligent energy management approach introduces solar PV electrical energy forecasting and EV （electric vehicle） charging demand projection to optimize the SOC （state of charge） of the buffer battery. The charging station has been operated continuously and routinely used by several EV users for a year. The actual operation shows that, a workplace charging station equipped with a buffer battery and with intelligent energy management can lower and reduce the station＇s peak power demand, and reduce the energy exchange with the utility grid by a factor of 2. The battery recharging power demand was shifted away from the on-peak time periods to the off-peak time periods, which will benefit the charging station owner from less energy use during peak periods when time-of-use rates are higher. The standard cell voltage deviation of the 220 cells was calculated to analyse the battery cell consistency during the resting, charging and discharging periods. The analysis shows that, the 220 50Ah cells show excellent voltage consistency with voltage deviation of less than 0.005 V within the battery SOC of 20%-80%. The voltage deviation doubles when the battery SOC reaches 90%. The comparison of cell voltage deviation at the beginning and after one year operation indicates that, the battery shows perfect cell voltage consistency and there is no obvious consistency deterioration during the battery resting, charging and discharging periods.

Operational program for proper capacity of electric bus charging station in Expo 2010

In the paper,an operational program of electric bus charging station is proposed,which is special for "The Construction Project for Expo 2010 Temporary Electric Bus Charging Station".Based on the quick-change mode,a vehicle operating schedule model has been established to meet the capacity of transport.Then,according to the quantity of passengers and utilization of batteries,a calculative method of parameters,such as the number of spare batteries and bus departure rules,has been provided.Furthermore,optimal simulation software designed for operating process of the charging station has been identified incorporating actual running data from electric buses and monitoring system of the charging station,and the rationality of the design is verified in the preliminary commissioning and the official operation.