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相关概念视频

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
Frequency-Domain Interpretation of PD Control01:24

Frequency-Domain Interpretation of PD Control

182
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...
182
Control of Power Flow01:30

Control of Power Flow

318
There are several methods to control power flow in power systems:
318
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
Time-Domain Interpretation of PD Control01:07

Time-Domain Interpretation of PD Control

185
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...
185
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

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相关实验视频

Updated: Sep 20, 2025

Design and Application of a Fault Detection Method Based on Adaptive Filters and Rotational Speed Estimation for an Electro-Hydrostatic Actuator
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自动触发的负载频率控制使用TS模糊ADP方法用于未知的电力系统.

Zhongyang Ming1, Huaguang Zhang1, Jiayue Sun1

  • 1College of Information Science and Engineering, Northeastern University, Shenyang, Liaoning, 110004, China; State Key Laboratory of Synthetical Automation for Process Industries, Northeastern University, Shenyang, Liaoning, 110004, China.

ISA transactions
|May 27, 2025
PubMed
概括

本研究引入了一种新的自触发控制方法,用于电网中的负载频率控制 (LFC). 该方法通过有效管理由可再生能源整合和需求波动引起的频率振荡来提高电力系统的稳定性.

关键词:
适应性动态编程是适应性的.负载频率控制器负载频率控制器多代理系统多代理系统自动触发的控制控制器

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A Modeling and Simulation Method for Preliminary Design of an Electro-Variable Displacement Pump
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科学领域:

  • 电气工程 电气工程
  • 控制系统 控制系统
  • 电力系统 电力系统

背景情况:

  • 相互连接的电力系统面临频率波动由于可再生能源的变化和负载变化.
  • 负载频率控制 (LFC) 对于保持电网稳定性和安全性至关重要.
  • 现有的事件触发控制 (ETC) 方法需要持续监控,这带来了沟通挑战.

研究的目的:

  • 提出一种基于自动触发控制 (STC) 的自适应动态编程 (ADP) 框架,用于多区域电力系统中的LFC.
  • 通过开发一个减少通信负载的STC机制来解决ETC的局限性.
  • 在不确定性条件下增强电力系统稳定性和频率调节.

主要方法:

  • 开发了一个使用多代理系统 (MAS) 模型处理参数不确定性和干扰的H∞分布式控制器.
  • 在自适应动态编程 (ADP) 框架内集成的模糊逻辑系统 (FLS).
  • 提出了一种新的自动触发控制 (STC) 机制,该机制根据当前状态计算未来的测量需求,避免持续监控.

主要成果:

  • 拟议的基于STC的ADP框架有效地调节了多区域电力系统中的频率.
  • H∞分布式控制器成功地减轻了参数不确定性和负载干扰.
  • 在具有挑战性的条件下,模拟证实了该方法在频率调节方面的有效性.

结论:

  • 新型自动触发控制自适应动态编程方法为多区域电力系统的负载频率控制提供了有效的解决方案.
  • 这种方法提高了通信效率和电力系统稳定性.
  • 拟议的框架是强大的对参数不确定性和负载干扰.