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相关概念视频

Load-frequency control01:28

Load-frequency control

611
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...
611
Frequency-Domain Interpretation of PD Control01:24

Frequency-Domain Interpretation of PD Control

346
Proportional-Derivative (PD) controllers are widely used in fan control systems to improve stability and performance. A fan control system can be effectively represented using a Bode plot to illustrate the impact of a PD controller through its transfer function. The Bode plot visually conveys how PD control modifies the fan's response across various frequencies, providing a frequency domain interpretation of the controller's behavior.
The proportional control gain, combined with the...
346
Time-Domain Interpretation of PD Control01:07

Time-Domain Interpretation of PD Control

364
Proportional-Derivative (PD) control is a widely used control method in various engineering systems to enhance stability and performance. In a system with only proportional control, common issues include high maximum overshoot and oscillation, observed in both the error signal and its rate of change. This behavior can be divided into three distinct phases: initial overshoot, subsequent undershoot, and gradual stabilization.
Consider the example of control of motor torque. Initially, a positive...
364
Time and frequency -Domain Interpretation of Phase-lead Control01:24

Time and frequency -Domain Interpretation of Phase-lead Control

418
Phase-lead controllers are commonly used in various control systems to enhance response speed and stability. Adjusting the brightness on a television screen offers a practical example of phase-lead control. When contrast is enhanced, a phase-lead controller is employed. Mathematically, phase-lead control is identified when the first parameter is smaller than the second.
The design of phase-lead control involves the strategic placement of poles and zeros to balance steady-state error and system...
418
Maximum Power Flow and Line Loadability01:23

Maximum Power Flow and Line Loadability

582
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.
582
Time and frequency -Domain Interpretation of Phase-lag Control01:21

Time and frequency -Domain Interpretation of Phase-lag Control

382
Phase-lag controllers are widely used in control systems to improve stability and reduce steady-state errors. A dimmer switch controlling the brightness of a light bulb serves as a practical example of phase-lag control, gradually adjusting the bulb's brightness. Mathematically, phase-lag control or low-pass filtering is represented when the factor 'a' is less than 1.
Phase-lag controllers do not place a pole at zero, but instead influence the steady-state error by amplifying any...
382

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相关实验视频

Updated: Jan 13, 2026

Generation and Coherent Control of Pulsed Quantum Frequency Combs
06:42

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循环组合协议下的电力系统的安全负载频率控制:一个量子化的MPC策略.

Guobao Liu1, Changyu Zhang1, Feng Li1

  • 1School of Electrical and Automation Engineering, Nanjing Normal University, Nanjing, 210046, China.

ISA transactions
|January 7, 2026
PubMed
概括

本研究介绍了一种安全的负载频率控制 (LFC) 方法,用于面临网络攻击和通信限制的电网. 拟议的框架确保在欺骗攻击下稳定的系统频率,增强电网弹性.

关键词:
欺骗攻击是一种欺骗攻击.需求响应是对需求的反应.在LFC中,LFC是指LFC.在MPC中,MPC是MPC.量子化是指量化过程中的一个过程.在RR协议中,RR协议.

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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:

  • 现代电力系统由于波动,通信限制和网络攻击而面临频率不稳定.
  • 安全负载频率控制 (LFC) 对于相互连接的多区域电力系统至关重要.

研究的目的:

  • 提出一个安全的LFC框架,能够抵御欺骗攻击和通信限制.
  • 为了提高相互连接的电力系统的频率调节性能.

主要方法:

  • 一个需求响应参与式的LFC框架,使用循环连锁 (RR) 协议.
  • 模型预测控制 (MPC) 具有动态信号量化.
  • 使用混合H2/H∞性能指数的弹性控制器设计.
  • 使用圆互补线性化和线性矩阵不等式 (LMI) 技术,重新制定非凸优化问题.

主要成果:

  • 提出的方法有效地控制频率波动在±0.005Hz在10秒内.
  • 在两个区域的电力系统模拟中证明了对持续欺骗攻击的弹性.
  • 成功解决了通信限制,同时改善了频率调节.

结论:

  • 开发的LFC框架为相互连接的电力系统中的频率稳定提供了强大而安全的解决方案.
  • 整合MPC,动态量化和混合H2/H∞指数,可以提高对网络威胁的抵御力.
  • 该研究通过全面的模拟来验证拟议方法的有效性.