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相关概念视频

PID Controller01:19

PID Controller

89
Proportional-Integral-Derivative (PID) controllers are widely used in various control systems to enhance stability and performance. In a thermostat, it adjusts heating or cooling based on the temperature difference between the actual and desired levels. They are often used in automotive speed systems, effectively managing sudden speed changes while maintaining a constant speed under varying conditions. On the other hand, PI controllers, commonly employed in voltage regulation, enhance stability...
89
Load-frequency control01:28

Load-frequency control

113
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...
113
PD Controller: Design01:26

PD Controller: Design

167
In automotive engineering, car suspension systems often employ Proportional Derivative (PD) controllers to enhance performance. PD controllers are utilized to adjust the damping force in response to road conditions. A controller, acting as an amplifier with a constant gain, demonstrates proportional control, with output directly mirroring input.
Designing a continuous-data controller requires selecting and linking components like adders and integrators, which are fundamental in Proportional,...
167
PI Controller: Design01:24

PI Controller: Design

173
Proportional Integral (PI) controllers are a fundamental component in modern control systems, widely used to enhance performance and mitigate steady-state errors. They are particularly effective in applications such as automatic brightness adjustment on smartphones, where they excel at mitigating steady-state errors for step-function inputs. Unlike PD controllers, which require time-varying errors to function optimally, PI controllers leverage their integral component to address residual...
173
Control of Power Flow01:30

Control of Power Flow

247
There are several methods to control power flow in power systems:
247
Time-Domain Interpretation of PD Control01:07

Time-Domain Interpretation of PD Control

78
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...
78

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电网连接到基于光伏/风力系统的模糊控制器和PID控制器,由公共服务局调整以改进LVRT.

Noura G El Sayed1, Ali M Yousef1, Gaber El-Saady1

  • 1Department of Electrical Engineering, Faculty of Engineering, Assiut University, Assiut, 71516, Egypt.

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概括

这项研究通过使用静态同步补偿器 (STATCOM) 在故障期间提高电网稳定性. 与PID控制相比,用于STATCOM的模糊逻辑控制 (FLC) 显著改善了低压通行 (LVRT) 功能.

关键词:
模糊逻辑控制 (FLC) 是一种模糊逻辑控制.混合系统是混合系统.通过低压行驶 (LVRT)太阳能 (PV) 的光伏 (PV) 的电力质量 电力质量 电力质量实践群集优化 (PSO) 方法相对的整数导数 (PID) 控制.静态同步补偿器 (STATCOM) 是一种风能是风能中的一种.

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科学领域:

  • 电气工程 电气工程
  • 电力系统 电力系统
  • 整合可再生能源的整合

背景情况:

  • 连接到电网的可再生能源,如风能和太阳能发电场,需要强大的低压通行能力 (LVRT).
  • 电网故障,例如线对线 (LL) 故障,会严重影响电网稳定性和电压水平.

研究的目的:

  • 调查静态同步补偿器 (STATCOM) 在增强混合动力系统的LVRT方面的有效性.
  • 为了在电网故障期间比较由模糊逻辑控制 (FLC) 控制的STATCOM与比例积分导数 (PID) 控制的性能.

主要方法:

  • 使用Matlab/Simulink模拟了风能和光伏发电的混合能源模型.
  • 在共同合点 (PCC) 上连接了一台100 MVAR STATCOM.
  • 粒子优化 (PSO) 用于调整PID控制器参数以进行比较.

主要成果:

  • 与PID控制的STATCOM相比,使用FLC的STATCOM在改善LVRT方面表现优越.
  • 由FLC控制的STATCOM有效地减轻了电压下降,并在LL电网故障时改善了电源质量.
  • 混合系统与基于FLC的STATCOM显示出增强的稳定性和弹性.

结论:

  • STATCOM,特别是当由FLC控制时,是一种非常有效的解决方案,可以在具有显著可再生能源透率的电网中改善LVRT.
  • 与传统的PID控制相比,FLC为STATCOM提供了更强大和更适应的控制策略,以减轻电网故障的影响.
  • 拟议的基于FLC的STATCOM系统提供了一种可靠的方法,可以在干扰期间保持电网稳定性和电力质量.