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.
Scientific reports
|March 5, 2025
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.
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.
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