在由WAMS数据组成的散装电力系统中,用于区域间振荡的基于CART的广域缓控制器

相关实验视频

Updated: Jun 18, 2025

06:04

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

Published on: February 14, 2025

265

Soheil Ranjbar¹

¹Department of Electrical Engineering, Velayat University, Iranshahr 99111-31311, Iran; School of Electronic and Electrical Engineering, University of Leeds, Leeds LS2 9JT, United Kingdom.

ISA transactions

|August 4, 2024

概括

这项研究引入了使用分类和回归树 (CART) 的广域阻尼控制 (WADC) 方法,以有效地减少电网中区域间的振荡. 这种方法在各种条件下稳定电力系统的高精度.

科学领域:

电气工程电气工程
电力系统分析分析分析
控制系统控制系统

背景情况:

区域间振荡 (IAO) 是散装电力系统的一个重大问题,可能导致不稳定.
现有的减压控制方法在准确识别和响应动态系统变化时可能面临挑战.

研究的目的:

提出和验证一种使用分类和回归树 (CART) 来缓解IAO的新型广域减缓控制 (WADC) 方法.
为了提高在大型电网中振荡阻尼的稳定性和精度.

主要方法:

使用相位测量单元 (PMU) 的数据进行过,以估计区域间的动态.
使用Pade近似设计一个极零IAO补偿块.
开发一种在线随机递减技术,用于识别连贯组和阻尼比率.
采用离线过程来识别应急情况,并通过粒子群优化 (PSO) 进行WADC增益调整,用于CART培训.

主要成果:

通过WADC方法,在达到足够的阻尼比率 (>0.6) 方面显示出高精度 (98%).
在39个公共汽车系统和561个发电机的伊朗电网上验证了振荡的有效抑制.
该方法在各种操作条件和关键应急情况中被证明是有效的.

结论:

建议使用CART的WADC方法是一种可行且准确的方法,用于在散装电力系统中减轻IAO.
集成PMU数据,先进的近似技术和机器学习为电力系统稳定提供了强大的解决方案.

关键词:

适应性控制是适应性的控制.决策树决策树是一个决策树.智能控制智能控制智能控制区域间的振荡是区域间的振荡.大面积测量测量广域测量

相关概念视频

01:28

Load-frequency control

143

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...

143

01:07

Damped Oscillations

5.7K

In the real world, oscillations seldom follow true simple harmonic motion. A system that continues its motion indefinitely without losing its amplitude is termed undamped. However, friction of some sort usually dampens the motion, so it fades away or needs more force to continue. For example, a guitar string stops oscillating a few seconds after being plucked. Similarly, one must continually push a swing to keep a child swinging on a playground.
Although friction and other non-conservative...

5.7K

01:25

Multimachine Stability

150

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:

150

01:26

PD Controller: Design

208

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,...

208

01:07

Time-Domain Interpretation of PD Control

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...

01:20

Types of Damping

6.4K

If the amount of damping in a system is gradually increased, the period and frequency start to become affected because damping opposes, and hence slows, the back and forth motion (the net force is smaller in both directions). If there is a very large amount of damping, the system does not even oscillate; instead, it slowly moves toward equilibrium. In brief, an overdamped system moves slowly towards equilibrium, whereas an underdamped system moves quickly to equilibrium but will oscillate about...