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相关概念视频

Multimachine Stability01:25

Multimachine Stability

129
Multimachine stability analysis is crucial for understanding the dynamics and stability of power systems with multiple synchronous machines. The objective is to solve the swing equations for a network of M machines connected to an N-bus power system.
In analyzing the system, the nodal equations represent the relationship between bus voltages, machine voltages, and machine currents. The nodal equation is given by:
129
Multi-input and Multi-variable systems01:22

Multi-input and Multi-variable systems

93
Cruise control systems in cars are designed as multi-input systems to maintain a driver's desired speed while compensating for external disturbances such as changes in terrain. The block diagram for a cruise control system typically includes two main inputs: the desired speed set by the driver and any external disturbances, such as the incline of the road. By adjusting the engine throttle, the system maintains the vehicle's speed as close to the desired value as possible.
In the absence...
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相关实验视频

Updated: May 23, 2025

Evaluating the Effect of Roadside Parking on a Dual-Direction Urban Street
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根据多信号优先战略,优化电车系统的节能列车时间表.

Jing He1, Fengyuan Wang2, Yuting Duan3,4

  • 1School of Faculty of Transportation Engineering, Kunming University of Science and Technology, Kunming, 650500, China. hejing@kust.edu.cn.

Scientific reports
|March 8, 2025
PubMed
概括

这项研究优化了电车运营的能源效率和减少排放. 新型号将电车能源使用量提高5.01%,同时将车辆延误减少27.21%.

关键词:
节能列车时间表 节能列车时间表混合整数线性编程 混合整数线性编程标志着优先战略的信号.电车系统 电车系统

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相关实验视频

Last Updated: May 23, 2025

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科学领域:

  • 运输工程 运输工程
  • 运营研究 运营研究
  • 可持续能源系统 可持续能源系统

背景情况:

  • 节能运行对于降低电车系统成本和碳足迹至关重要.
  • 传统的优化方法往往忽视了电车对道路交通整体效率的影响.
  • 将电车运营与交通信号控制相结合,是可持续城市交通的关键.

研究的目的:

  • 开发一个双目标模型,以优化电车的能源效率和时间表.
  • 将多信号优先战略和道路交通流量纳入电车运行优化中.
  • 提高电车系统性能和城市道路交通效率.

主要方法:

  • 开发了一个双目标混合整数线性编程 (MILP) 模型.
  • 综合多信号优先战略 (主动和无优先级) 和道路交通流.
  • 优化了电车速度配置文件和交叉路口的停车计划.

主要成果:

  • 实现了5.01%的电车总能耗减少.
  • 乘客舒适度提高了8.23%.
  • 与最初的时间表相比,延迟的车辆数量减少了27.21%.

结论:

  • 拟议的MILP模型有效地平衡了节能,乘客舒适性和道路交通效率.
  • 基于流量流动的动态信号优先级策略可以提高系统的整体性能.
  • 该模型为城市环境中的节能电车运行提供了可行的解决方案.