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相关概念视频

Fast Decoupled and DC Powerflow01:24

Fast Decoupled and DC Powerflow

164
The fast decoupled power flow method addresses contingencies in power system operations, such as generator outages or transmission line failures. This method provides quick power flow solutions, essential for real-time system adjustments. Fast decoupled power flow algorithms simplify the Jacobian matrix by neglecting certain elements, leading to two sets of decoupled equations:
164
Multiple Pipe Systems01:21

Multiple Pipe Systems

395
Multipipe systems consist of complex configurations of interconnected pipes designed to transport fluids efficiently across intricate networks. They are essential in engineering applications requiring precise control over flow distribution, pressure, and head loss. They are categorized into series, parallel, loop, and network configurations, each distinguished by unique flow characteristics and applications.
Series Configuration
In a series configuration, fluid flows sequentially from one pipe...
395
Hydraulic Jump: Problem Solving01:16

Hydraulic Jump: Problem Solving

47
To analyze a hydraulic jump in a rectangular channel with a flow speed of 6 meters per second, follow these steps:Calculate Effective Upstream Velocity:When the downstream gate closes, a hydraulic jump forms, traveling upstream at 2 meters per second. This wave speed combines with the initial channel flow velocity, creating an effective upstream velocity.Identify Flow Velocities Before and After the Hydraulic Jump:Upstream of the hydraulic jump, the effective flow velocity includes both the...
47
The Power Flow Problem and Solution01:26

The Power Flow Problem and Solution

161
Power flow problem analysis is fundamental for determining real and reactive power flows in network components, such as transmission lines, transformers, and loads. The power system's single-line diagram provides data on the bus, transmission line, and transformer. Each bus k in the system is characterized by four key variables: voltage magnitude Vk​, phase angle δk​, real power Pk​, and reactive power Qk​. Two of these four variables are inputs, while the...
161
Application of the Energy Equation01:04

Application of the Energy Equation

559
The application of the energy equation to centrifugal pumps is a fundamental principle in fluid dynamics and engineering. In this scenario, the energy equation is used to calculate the flow rate of a centrifugal pump responsible for transferring water between two reservoirs at different elevations. The pump applies an energy input of 7500 joules per second, and the vertical difference between the lower and upper reservoirs is 10 meters. Additionally, the head loss due to friction and other...
559
Underflow Gates01:30

Underflow Gates

37
Underflow gates are vital for controlling water flow in irrigation canals. The three main types of underflow gates — vertical, radial, and drum gates — serve different purposes while ensuring effective flow management. Vertical gates move up and down, generating a free-flowing water jet; radial gates pivot to regulate the flow; and drum gates rotate for precise adjustments. The flow through these gates is influenced by downstream conditions, resulting in free or drowned outflow.Free and...
37

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相关实验视频

Updated: May 30, 2025

A Modeling and Simulation Method for Preliminary Design of an Electro-Variable Displacement Pump
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一个新的数字和搜索算法,用于优化水分发电网的调度.

Francesco De Paola1, Francesco Pugliese1, Nicola Fontana2

  • 1Department of Civil, Architectural and Environmental Engineering, University of Naples Federico II, Via Claudio 21, 80125 Naples, Italy.

Water research X
|January 27, 2025
PubMed
概括

使用改进的Harmony搜索算法优化水分网络中的调度,大大降低了能源和维护成本. 这种方法通过最大限度地降低运营费用来提高经济可持续性.

关键词:
优化成本,优化成本.和 寻找 寻找 和的元启发式算法.交换机的数量 交换机的数量的调度时间表.

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Spatial Multiobjective Optimization of Agricultural Conservation Practices using a SWAT Model and an Evolutionary Algorithm
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科学领域:

  • 环境工程 环境工程
  • 水资源管理 水资源管理
  • 运营研究 运营研究

背景情况:

  • 对于在水分网 (WDN) 中保持压力至关重要.
  • 有效的调度 (PS) 对于经济可持续性和节省能源成本至关重要.
  • 超启发式算法为PS优化提供了潜力,但不能保证全球最佳性.

研究的目的:

  • 在WDN中优化排程,以最大限度地降低能源消耗和维护成本.
  • 为了提高运营效率,减少每日开关的数量.
  • 为PS优化开发和应用修改后的和搜索 (HS) 算法.

主要方法:

  • 使用修改后的Harmony Search (HS) 算法进行调度优化.
  • 集成的EPANET 2.0用于WDN中的液压模拟.
  • 开发了新的设置方程和惩罚函数,以限制可行的解决方案.

主要成果:

  • 修改后的HS算法有效优化了能源消耗和维护成本.
  • 该研究表明,每天开关的数量减少了.
  • 在基准网络上,在短的计算时间内实现了近乎最佳的解决方案.

结论:

  • 开发的修改后的HS算法是优化WDNs中的调度的一个有能力的工具.
  • 这种方法有助于提高水资源管理的经济可持续性和运营效率.
  • 该方法提供了一种切实可行的解决方案,用于降低WDN中的能源成本和维护.