关于在基于DFIG的风电场中缓解次同步振荡的拟议方法
Mohamed Abdeen1, Mahmoud A El-Dabah2, Ahmed M Agwa3
1Electrical Engineering Department, Faculty of Engineering, Al-Azhar University, Cairo, Egypt.
Scientific reports
|December 5, 2024
概括
将一个比例共振控制器和一个PI控制器连接在一起,可以有效地减轻带有门控制系列电容器 (GCSC) 的传输线路中的次同步振荡 (SSO). 这种新的方法提高了系统的稳定性,特别是在具有挑战性的条件下,如低风速和高补偿水平.
科学领域:
- 电气工程 电气工程
- 电力系统 电力系统
- 控制理论 控制理论
背景情况:
- 输电线路的高序列补偿,特别是风电场的高序列补偿,增加了次同步振荡 (SSO) 的风险.
- 门控制系列电容器 (GCSC) 用于减轻SSO并改善功率传输.
- 之前的方法经常将比例整数 (PI) 控制器与GCSC控制的额外减压控制器相结合.
研究的目的:
- 为了研究相对共振 (PR) 控制器与SSO阻尼的PI控制器相级联的有效性.
- 评估拟议控制器在各种操作条件下减轻SSO的表现.
主要方法:
- 使用修改后的IEEE First基准模型进行了广泛的时间域模拟.
- 拟议的PR-PI控制器在不同的风速,补偿水平和次同步控制相互作用下进行了测试.
- 进行了与现有的SSO缓冲技术进行比较分析.
主要成果:
- 拟议的PR-PI控制器在减轻SSO方面表现优异,与其他方法相比.
- 在低风速和高系列补偿水平下,效果特别明显.
- 在测试条件下,控制器成功增强了系统稳定性.
结论:
- 将PR控制器与PI控制器连接在一起是一种非常有效的策略,可以在GCSC控制的传输系统中减轻SSO.
- 这种方法为电力系统稳定提供了显著的优势,特别是在可再生能源整合场景中.
- 拟议的方法为管理现代电网中SSO风险提供了强大的解决方案.
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