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Load-frequency control01:28

Load-frequency control

269
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...
269
Turbine-Governor Control01:17

Turbine-Governor Control

408
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...
408
Multimachine Stability01:25

Multimachine Stability

235
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:
235
Generator Voltage Control01:21

Generator Voltage Control

248
Generator voltage control is crucial for maintaining the stable operation of synchronous generators and wind turbines. In older models, a DC generator driven by the rotor delivers DC power to the rotor's field winding, and the power is transferred through slip rings and brushes. In the latest models, static or brushless exciters are used. Static exciters rectify AC power from the generator terminals and then transfer the DC power directly to the rotor. Brushless exciters, on the other hand,...
248
Control of Power Flow01:30

Control of Power Flow

318
There are several methods to control power flow in power systems:
318
Reclosers and Fuses01:26

Reclosers and Fuses

170
Automatic circuit reclosers enhance the protection of distribution circuits by interrupting and auto-reclosing an AC circuit according to a preset sequence. They effectively manage temporary faults on overhead distribution lines, often caused by tree limbs or wildlife, by briefly disrupting service to improve overall reliability. However, contact with reclosers or energized broken conductors on the ground can pose serious hazards.
A comprehensive protection scheme for radial distribution...
170

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相关实验视频

Updated: Sep 20, 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

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基于观察者的虚假数据注入攻击,对微电网负载频率控制系统的事件触发控制具有弹性.

Athira M Mohan1, Nader Meskin1

  • 1Department of Electrical Engineering, Qatar University, Doha, Qatar.

ISA transactions
|May 28, 2025
PubMed
概括
此摘要是机器生成的。

本研究引入了一种弹性控制策略,以保护岛屿微电网负载频率控制系统免受虚假数据注入攻击. 拟议的方法提高了系统稳定性和针对网络威胁的通信效率.

关键词:
事件触发的通信事件触发的通信.外国直接投资攻击弹性基于观察者的控制是基于观察者的控制.区域极点排名区域极点排名

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科学领域:

  • 电气工程 电气工程
  • 控制系统 控制系统
  • 网络安全 网络安全

背景情况:

  • 岛屿微电网需要强大的负载频率控制 (LFC) 才能保持稳定.
  • 虚假数据注入 (FDI) 攻击对LFC系统构成重大威胁.
  • 现有的控制策略可能缺乏对复杂的网络攻击的弹性.

研究的目的:

  • 开发一项抵御二次攻击的基于观察者的事件触发控制 (AROETC) 策略.
  • 提高微电网LFC对二次测量通道的外国直接投资攻击的弹性.
  • 在网络威胁下确保通信效率和系统稳定性.

主要方法:

  • 使用基于区域极置 (RPP) 的状态反辅助控制器进行虚拟惯性 (VI) 控制.
  • 使用Lyapunov-Krasovskii功能稳定性分析设计一个二级观察者和控制器.
  • 实施事件触发条件,以提高通信效率.

主要成果:

  • 拟议的AROETC战略证明了对外国直接投资袭击的抵御力.
  • VI控制循环通过基于RPP的调来实现所需的性能.
  • 模拟分析验证了在各种干扰下AROETC方法的有效性.

结论:

  • 开发的AROETC战略有效地抵制了岛屿微电网LFC的外国直接投资攻击.
  • 这种方法确保了系统的稳定性和通信效率.
  • 该研究强调了智能电网网络安全中弹性控制的重要性.