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相关概念视频

Maximum Power Flow and Line Loadability01:23

Maximum Power Flow and Line Loadability

584
The maximum power flow for lossy transmission lines is derived using ABCD parameters in phasor form. These parameters create a matrix relationship between the sending-end and receiving-end voltages and currents, allowing the determination of the receiving-end current. This relationship facilitates calculating the complex power delivered to the receiving end, from which real and reactive power components are derived.
584
Maximum Power Transfer01:16

Maximum Power Transfer

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Numerous practical applications within engineering disciplines, such as telecommunications, necessitate optimizing power delivery to a connected load. This pursuit, however, entails inherent internal losses, which can either equal or exceed the power supplied to the load. The Thevenin equivalent circuit is helpful in finding the maximum power a linear circuit can deliver to a load. It is assumed in this context that the load resistance can be adjusted.
By substituting the entire circuit with...
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Distributed Loads01:19

Distributed Loads

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Distributed loads are a common type of load that engineers and scientists encounter in various practical situations. Distributed loads often refer to a type of load spread over a surface or a structure and can be modeled as continuous force per unit area.
For example, consider a bookshelf filled with books stacked vertically adjacent to each other. The weight of the books is evenly distributed over the length of the shelf. As a result, the pressure at different locations on the surface of the...
942
Power System Distribution01:25

Power System Distribution

1.0K
Power system distribution involves delivering electrical energy from power plants to consumers through a network of transmission and distribution systems. The process begins at power plants, where energy from coal, gas, nuclear, water, and wind is converted into electrical energy. These plants use three-phase generators, typically rated between 50 to 1300 MVA, with terminal voltages ranging from a few kV to 20 kV, depending on the size and age of the units.
The transmission system is designed...
1.0K
Distributed Loads: Problem Solving01:21

Distributed Loads: Problem Solving

1.1K
Beams are structural elements commonly employed in engineering applications requiring different load-carrying capacities. The first step in analyzing a beam under a distributed load is to simplify the problem by dividing the load into smaller regions, which allows one to consider each region separately and calculate the magnitude of the equivalent resultant load acting on each portion of the beam. The magnitude of the equivalent resultant load for each region can be determined by calculating...
1.1K
Relation Between the Distributed Load and Shear01:23

Relation Between the Distributed Load and Shear

1.1K
Understanding the relationship between the distributed load and shear force in structural analysis is crucial for analyzing beams subjected to various loading conditions. Consider the case of a beam experiencing a distributed load, two concentrated loads, and a couple moment.
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Experimental Investigation of the Hierarchical Control in DC Microgrids Using a Real-time Simulator
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多个分布式光伏电站在资源聚合和数据通信拥堵下参与主动电力支持.

Bo Zhang, Chunxia Dou, Dong Yue

    IEEE transactions on cybernetics
    |October 24, 2025
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    此摘要是机器生成的。

    本研究介绍了一种主动电力支持 (APS) 策略,用于管理低碳电网中波动的光伏发电. 该方法提高了光伏预测的准确性,并优化了网络路径,以确保稳定的电源供应.

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    科学领域:

    • 电气工程 电气工程
    • 可再生能源系统可再生能源系统
    • 控制理论 控制理论

    背景情况:

    • 将光伏 (PV) 等新能源融入配电网络对于低碳运营至关重要.
    • 随机的光伏发电和增加的数据流量导致电力波动,网络拥堵和通信干扰,挑战供需平衡.

    研究的目的:

    • 制定一个主动电力支持 (APS) 战略,以应对光伏集成到配电网络所带来的挑战.
    • 提高低碳电网供电的可靠性和稳定性.

    主要方法:

    • 一种基于突变的自适应生成预测算法,具有多极端学习机制 (ELM),用于优化光伏生成预测.
    • 一种需求驱动的路径优化方法,以优先考虑关键数据传输和减轻网络拥堵.
    • 一个使用多因素匹配和基于滑动模式控制器 (SMC) 的虚拟领导者遵循共识算法的等级控制策略,以实现最佳的光伏控制和干扰抑制.

    主要成果:

    • 与现有方法相比,减少了至少10.1%的光伏发电预测误差.
    • 通过根据数据重要性和服务需求调整传输路径来缓解网络拥堵.
    • 在1秒内抑制通信干扰,确保有效的APS.

    结论:

    • 拟议的APS战略有效地管理了分布网络中的光伏集成挑战.
    • 该方法提高了预测准确性,网络效率和通信稳定性.
    • 通过增强的电网控制和管理,实现可靠的低碳运行.