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相关概念视频

Fast Decoupled and DC Powerflow01:24

Fast Decoupled and DC Powerflow

178
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:
178
Maximum Power Flow and Line Loadability01:23

Maximum Power Flow and Line Loadability

104
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.
104
Turbine-Governor Control01:17

Turbine-Governor Control

187
Turbine-governor control is crucial for maintaining power system stability by balancing turbine mechanical power output with electrical load demand. This mechanism ensures that generator frequency and rotor speed are within acceptable limits during load variations. Turbine-generator units store kinetic energy due to their rotating masses; this energy is released to meet the load requirement when the load increases. The electrical torque of turbines rises to meet the demand, whereas the...
187
Load-frequency control01:28

Load-frequency control

140
Load-frequency control (LFC) is vital for maintaining power system stability, ensuring that frequency and power flows remain within acceptable limits during load changes. Turbine-governor control eliminates rotor accelerations and decelerations following load changes. However, a steady-state frequency error persists when the change in the turbine-governor reference setting is zero. In an interconnected power system, each area agrees to export or import a scheduled amount of power through...
140
Control of Power Flow01:30

Control of Power Flow

255
There are several methods to control power flow in power systems:
255
The Power Flow Problem and Solution01:26

The Power Flow Problem and Solution

183
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...
183

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相关实验视频

Updated: Jun 16, 2025

Experimental Investigation of the Hierarchical Control in DC Microgrids Using a Real-time Simulator
06:04

Experimental Investigation of the Hierarchical Control in DC Microgrids Using a Real-time Simulator

Published on: February 14, 2025

265

基于节点依赖性自然的风力发电场中最佳功率调度的分散动态系统.

Sheng Huang1, Hanzhi Peng2, Xiaohui Huang1

  • 1College of Electrical and Information Engineering, Hunan University, 410082, Changsha, China.

Communications engineering
|August 18, 2024
PubMed
概括

本研究介绍了一个去中心化系统,用于优化风电场发电. 该方法使用本地测量有效地管理电源限制,实现接近全球的最佳性能.

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06:04

Experimental Investigation of the Hierarchical Control in DC Microgrids Using a Real-time Simulator

Published on: February 14, 2025

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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:

  • 风力发电场的发电调度必须满足电网需求,这造成了复杂的全球供需约束.
  • 这些约束的集中或分布式处理对于大型风力发电场来说是计算密集的.
  • 快速和局部执行功率的最佳调度至关重要.

研究的目的:

  • 开发一个分散的动态系统,以优化风电场的电力流量.
  • 为了应对电力调度中计算复杂的全球平等约束的挑战.
  • 为了使最佳的功率调度策略能够快速,局部地执行.

主要方法:

  • 一个完全分散的动态系统被设计用于功率流的优化.
  • 全球功率限制被解为局部风力轮机控制器,使用节点依赖和功率灵敏度矩阵.
  • 当地优化问题通过梯度投影方法代地解决.

主要成果:

  • 拟议的去中心化系统有效地优化了电力流量,同时满足了电力供应的限制.
  • 该系统证明了线性收到一个平衡点.
  • 模拟只使用局部测量证实了接近全球的最佳性能.

结论:

  • 这种去中心化的方法成功地将复杂的全球约束脱为可管理的本地问题.
  • 该方法为大规模风电场发电提供了一种高效和计算可行的解决方案.
  • 当地测量足以实现风电场的高性能最佳功率调节.