多级ESO-ADRC用于高可再生能源和电动汽车透率的离网系统的频率稳定
Manesh Kumar Ochani1, Hengxu Zhang2, Yongji Cao1
1School of Electrical Engineering, Shandong University, Jinan, 250061, China.
Scientific reports
|July 9, 2025
概括
一项新的控制策略稳定了城市混合离网电力系统 (UHOGPS),使用高可再生能源 (RES) 和电动汽车 (EV). 多阶段扩展状态观察器与通用主动干扰排斥控制 (MSESO-GADRC) 显著改善了频率稳定性.
科学领域:
- 电气工程 电气工程
- 控制系统 控制系统
- 电力系统 电力系统
背景情况:
- 城市混合离网电力系统 (UHOGPS) 面临频率稳定挑战,因为可再生能源 (RES) 和电动汽车 (EV) 的透率很高.
- 这些系统表现出复杂的非线性,随机干扰和动态不确定性,影响电网稳定性.
- 现有的控制方法很难有效地管理这些多样化和不可预测的干扰.
研究的目的:
- 提出一个新的控制框架,多阶段扩展状态观察员与通用主动干扰排斥控制 (MSESO-GADRC),以稳定UHOGPS.
- 解决当前控制器在缓解频率偏差和补偿未建模动态方面的局限性.
- 在具有高可再生能源和电动汽车透率的现实运营条件下,验证拟议的MSESO-GADRC的有效性.
主要方法:
- 开发一个分层的MSESO架构,集成两个,三个和四个阶段的观察者配置.
- 在观察者内部实施适应性带宽调整,以隔离和抑制不同频段 (低,中,高) 的干扰.
- 集成通用主动干扰排斥控制 (GADRC) 以精确减轻干扰和补偿未建模的动态.
主要成果:
- 与现有控制器 (1PD-DOP-3PID,SESO,FO-IMC,SBL-PI) 相比,MSESO-GADRC框架显示出更高的性能.
- 实现了显著更小的频率偏差 (43.40-85.71%的减少) 和更快的沉降时间 (38.46-64.34%的改善).
- 在UHOGPS中验证了高达70%的RES/EV透率的稳定性,证实了有效的干扰排斥和非线性补偿.
结论:
- 该MSESO-GADRC提供了一个强大的和有效的解决方案,用于频率稳定在UHOGPS高 RES和EV透率.
- 这种控制范式为稳定脱碳电网和实现未来高可再生微电网提供了关键途径.
- 该研究成功地解决了在复杂的电力系统中排斥干扰和系统非线性补偿之间的权衡.
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