排序方式: 共有118条查询结果,搜索用时 15 毫秒
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在对第一产业用电量与农村居民用电量分析研究的基础上,提出合并电量预测构想,并建立了合并电量预测模型,算例结果表明,该模型预测结果合理有效。该模型以在安徽省中长期负荷预测研究与管理应用系统中得到实现,具有很高的实用价值。 相似文献
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This paper addresses the equilibrium traffic assignment problem involving battery electric vehicles (BEVs) with flow-dependent electricity consumption. Due to the limited driving range and the costly/time-consuming recharging process required by current BEVs, as well as the scarce availability of battery charging/swapping stations, BEV drivers usually experience fear that their batteries may run out of power en route. Therefore, when choosing routes, BEV drivers not only try to minimize their travel costs, but also have to consider the feasibility of their routes. Moreover, considering the potential impact of traffic congestion on the electricity consumption of BEVs, the feasibility of routes may be determined endogenously rather than exogenously. A set of user equilibrium (UE) conditions from the literature is first presented to describe the route choice behaviors of BEV drivers considering flow-dependent electricity consumption. The UE conditions are then formulated as a nonlinear complementarity model. The model is further formulated as a variational inequality (VI) model and is solved using an iterative solution procedure. Numerical examples are provided to demonstrate the proposed models and solution algorithms. Discussions of how to evaluate and improve the system performance with non-unique link flow distribution are offered. A robust congestion pricing model is formulated to obtain a pricing scheme that minimizes the system travel cost under the worst-case tolled flow distribution. Finally, a further extension of the mathematical formulation for the UE conditions is provided. 相似文献
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城市轨道交通通风空调系统应直面电力紧缺的挑战 总被引:5,自引:5,他引:0
针对国内目前的电力紧缺状况,结合现有城市轨道交通通风空调系统运行的耗能情况,提出应对策略和系统发展方向。 相似文献
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为更好分析和总结船舶脱硫改装工程中电气设计会涉及的内容和注意点,通过前期准备、详细设计、生产设计3个阶段对脱硫改装的电气设计进行描述,并适当结合工程实例进行说明阐述,为后续同类型的改装设计提供参考。 相似文献
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马尔科夫链是一种随机过程的数学模型,利用1986年到2004年的年发电量统计数据,采用马氏链方法从理论上对今后2年的年发电量趋势进行了预报.结果表明,按照目前增长速度,2006年发电量将突破25000亿千瓦时. 相似文献
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