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相关概念视频

Load-frequency control01:28

Load-frequency control

137
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...
137
Control of Power Flow01:30

Control of Power Flow

255
There are several methods to control power flow in power systems:
255
Generator Voltage Control01:21

Generator Voltage Control

137
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,...
137
Turbine-Governor Control01:17

Turbine-Governor Control

184
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...
184
Node Analysis for AC Circuits01:14

Node Analysis for AC Circuits

300
Consider an angioplasty system featuring a catheter equipped with a turbine, a critical tool for removing plaque deposits from coronary arteries. This intricate medical device operates using a circuit model reminiscent of a dual-node RLC circuit powered by a current-controlled voltage source.
To unravel the complexities of this system, nodal analysis is employed, a powerful technique founded on Kirchhoff's current law (KCL), which remains valid for phasors. AC circuits can effectively be...
300
Multimachine Stability01:25

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

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相关实验视频

Updated: Jun 13, 2025

Experimental Investigation of the Hierarchical Control in DC Microgrids Using a Real-time Simulator
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基于Narendra模型的微电网逆变器的自适应控制策略.

Qing Wang1, Guimin Li2, Zhiru Chen3

  • 1Marketing Service Center (Metrology Center), State Grid Shandong Electric Power Company, Jinan, 250000, Shandong, China. wangqing20231127@163.com.

Scientific reports
|September 13, 2024
PubMed
概括

这项研究使用Narendra模型和自适应策略来增强微电网逆变器控制. 改进的系统提供更快的电压恢复和减少波,有利于复杂的微电网操作.

关键词:
适应性控制策略 适应性控制策略控制性能 控制表现 控制表现逆变器是一个逆变器.微电网就是一个微电网.纳伦德拉模型

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科学领域:

  • 电气工程 电气工程
  • 电力系统工程 电力系统工程

背景情况:

  • 微电网技术正在进步,分布式发电容量增加.
  • 复杂的操作条件降低了微电网逆变器控制性能.

研究的目的:

  • 在复杂情况下改善微电网逆变器控制性能.
  • 为了实现实时电压校正和补偿.

主要方法:

  • 纳伦德拉模型和自适应控制策略的融合.
  • 实时电压校正和补偿技术.

主要成果:

  • 逆变器显示了更快的电压恢复 (约. 在负载切换后 (一个循环).
  • 端口电压波率从10.43%大幅降低至1.92%.
  • 与传统和标准自适应系统相比,改进了控制性能.

结论:

  • 提出的方法有效地提高了微电网中的逆变器控制性能.
  • 成功地解决了电压偏差,三相不对称性和波污染.
  • 为未来的微电网研究提供理论和数据支持.