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相关概念视频

Turbine-Governor Control01:17

Turbine-Governor Control

259
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...
259
Fast Decoupled and DC Powerflow01:24

Fast Decoupled and DC Powerflow

233
The fast decoupled power flow method addresses contingencies in power system operations, such as generator outages or transmission line failures. This method provides quick power flow solutions, essential for real-time system adjustments. Fast decoupled power flow algorithms simplify the Jacobian matrix by neglecting certain elements, leading to two sets of decoupled equations:
233
Control of Power Flow01:30

Control of Power Flow

288
There are several methods to control power flow in power systems:
288
Wind Turbine Machine Models01:24

Wind Turbine Machine Models

164
In the growing field of wind energy, incorporating wind turbine models into transient stability analysis is essential. Induction and synchronous machines are the primary models used, with induction machines being prevalent due to their simplicity and reliability.
Induction machines interact through the rotating magnetic field generated by the stator and the rotor. The key parameter is slip, which is the difference between synchronous speed and rotor speed relative to synchronous speed. Slip is...
164
Load-frequency control01:28

Load-frequency control

187
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...
187
Maximum Power Flow and Line Loadability01:23

Maximum Power Flow and Line Loadability

135
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.
135

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Experimental Investigation of the Hierarchical Control in DC Microgrids Using a Real-time Simulator
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通过使用数据驱动的优化方法,对大型风电场的分层功率控制.

Pengyu Di1, Xiaoqing Xiao1, Feng Pan2

  • 1Guangdong Power Grid Co., Ltd, Guangzhou, China.

PloS one
|September 14, 2023
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概括

本研究介绍了大型风电场的分层功率控制 (HPC) 方法,以有效地管理自动发电控制 (AGC) 信号. 高性能计算方法可以降低计算成本,以实现最佳的风力轮机调度,即使有后续效应.

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科学领域:

  • 电气工程 电气工程
  • 可再生能源系统可再生能源系统
  • 控制系统 控制系统

背景情况:

  • 大型风力发电场需要有效地将自动发电控制 (AGC) 信号分发给众多风力轮机 (WTs).
  • 工作人员之间的警觉效应使高质量的调度方案的计算变得复杂.
  • 现有的方法在优化实时AGC信号分布方面面临计算费用.

研究的目的:

  • 为大型风力发电场开发一种新的分层功率控制 (HPC) 策略.
  • 为了减少与AGC信号分配和WT调度相关的计算负担.
  • 考虑效应,提高发货方案的质量.

主要方法:

  • 建议建立一个分层功率控制 (HPC) 框架,利用WT的地理布局和电气连接.
  • 实时的AGC信号根据调节能力分配给脱的组.
  • 数据驱动的替代器辅助优化和基于替代器的动态本地搜索用于WT级信号分配.

主要成果:

  • 高性能计算 (HPC) 方法通过尽量减少客观函数评估,显著减少了计算时间.
  • 通过高效的本地搜索机制,可以实现高质量的调度方案.
  • 该技术的有效性在各种AGC信号,风速和方向上得到验证.

结论:

  • 提出的分层功率控制 (HPC) 为大型风电场的AGC提供了高效和有效的解决方案.
  • 这种方法减轻了复杂的风电场动态和效应带来的计算挑战.
  • 该方法确保了高质量的调度方案,同时优化了控制信号的分布.