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相关概念视频

Fast Decoupled and DC Powerflow01:24

Fast Decoupled and DC Powerflow

192
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:
192
Generator Voltage Control01:21

Generator Voltage Control

155
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,...
155
The Power Flow Problem and Solution01:26

The Power Flow Problem and Solution

221
Power flow problem analysis is fundamental for determining real and reactive power flows in network components, such as transmission lines, transformers, and loads. The power system's single-line diagram provides data on the bus, transmission line, and transformer. Each bus k in the system is characterized by four key variables: voltage magnitude Vk​, phase angle δk​, real power Pk​, and reactive power Qk​. Two of these four variables are inputs, while the...
221
Wind Turbine Machine Models01:24

Wind Turbine Machine Models

134
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...
134
Control of Power Flow01:30

Control of Power Flow

269
There are several methods to control power flow in power systems:
269
Generation of Three-Phase Voltage01:21

Generation of Three-Phase Voltage

380
A three-phase AC generator has a rotor with a rotating magnet placed within the stator mounted with the stationary three-phase winding to generate three-phase voltages via mutual induction. These windings are evenly distributed around the inner circumference of the stator and are arranged 120 electrical degrees apart. Three-phase stator windings consist of three separate coils or groups of coils, known as phases, each connected in Y (star) configuration or Delta configuration.
As the rotor...
380

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孤立混合光伏/风能/电池/柴油发电机微电网的技术经济优化,使用改进的salp swarm算法.

Zakaria Belboul1, Belgacem Toual1,2, Abderrahman Bensalem1

  • 1Laboratory of Applied Automation and Industrial Diagnostics (LAADI), Faculty of Science and Technology, Ziane Achour University, 17000, Djelfa, Algeria.

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本研究介绍了一种改进的Salp Swarm算法 (ISSA),用于优化孤立的微电网,平衡成本和排放. ISSA有效地确定最佳可再生能源系统大小,优于其他算法.

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科学领域:

  • 可再生能源系统可再生能源系统
  • 优化算法 优化算法
  • 微电网技术 微电网技术

背景情况:

  • 孤立的微电网需要技术经济优化,以提高效率和减少排放.
  • 像Salp Swarm Algorithm (SSA) 这样的现有算法可能会受到局部最小值和趋同问题的影响.
  • 将可再生能源 (太阳能,风能,电池) 与柴油发电机进行平衡,带来了复杂的设计挑战.

研究的目的:

  • 开发一个改进的Salp Swarm算法 (ISSA) 以实现孤立微电网的技术经济优化.
  • 解决原始SSA在寻找最佳微电网配置方面的收局限性.
  • 尽量减少温室气体排放,同时确保微电网设计的成本效益.

主要方法:

  • 提出了一种改进的Salp Swarm算法 (ISSA),用于领导Salp的新型位置适应机制.
  • 研究了三种微电网系统 (MS) 配置:PV/WT/BESU/DG,PV/BESU/DG,以及WT/BESU/DG.
  • 将ISSA性能与SSA,狮优化器 (ALO),龙方法 (DA) 和火焰优化算法 (MFO) 的性能进行比较.

主要成果:

  • 与其他测试的算法相比,ISSA在解决微电网优化问题方面表现出卓越的性能.
  • 光伏/电热/BESU/DG配置实现了最佳的成本效益,能源成本 (COE) 为0.2109美元/千瓦时.
  • 最佳配置的最佳尺寸包括10kW的光伏,9kWW,24kW的BESU和3kW的DG,其中96%的可再生能源部分 (REF) 和4%的低输电供应概率 (LPSP).

结论:

  • ISSA是优化孤立微电网的有效方法,克服了局部最小问题.
  • 该研究提供了一种可行的方法来确定适当的微电网组件大小.
  • ISSA为管理不断上升的能源成本和微电网设计复杂性提供了一个潜在的解决方案.