| 引用本文: | 郑力文,马世英,王青.基于预定义时间分数阶滑模控制的风火打捆外送系统振荡抑制策略[J].电力自动化设备,2025,45(6):95-100. |
| ZHENG Liwen,MA Shiying,WANG Qing.Oscillation suppression strategy of wind-thermal-bundled system based on predefined time fractional-order sliding mode control[J].Electric Power Automation Equipment,2025,45(6):95-100. |
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| 摘要: |
| 针对风火打捆外送系统的振荡抑制问题，对直驱风电场换流器和同步发电机分别提出了一种预定义时间分数阶滑模控制(PTFOSMC)。PTFOSMC采用分数阶微分的形式，其表达式为连续描述，可以更好地减弱传统滑模控制器的抖振现象；通过Lyapunov函数证明了PTFOSMC能够保证系统在有界的收敛时间内稳定，且收敛时间与初始状态无关。仿真结果表明，与比例积分控制和固定时间分数阶滑模控制相比，系统在PTFOSMC的作用下具有更短的收敛时间和更小的振荡幅度，验证了所提策略的有效性和优越性。 |
| 关键词: 风火打捆外送系统 振荡抑制 预定义时间分数阶滑模控制 分数阶微分 Lyapunov函数 |
| DOI：10.16081/j.epae.202412015 |
| 分类号:TM61;TM712 |
| 基金项目:国家重点研发计划项目(2022YFB2403100) |
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| Oscillation suppression strategy of wind-thermal-bundled system based on predefined time fractional-order sliding mode control |
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ZHENG Liwen, MA Shiying, WANG Qing
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China Electric Power Research Institute, Beijing 100192, China
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| Abstract: |
| Aiming at the oscillation suppression issue of wind-thermal-bundled system, a predefined time fractional-order sliding mode control(PTFOSMC) is proposed for both the direct drive wind farm converter and synchronous generator. The PTFOSMC adopts the form of fractional-order differentiation and its expression is continuous description, which can better reduce the buffeting phenomenon of traditional sliding mode controller. Based on the Lyapunov function, it is proved that PTFOSMC can guarantee the stability of the system in the bounded convergence time and the convergence time is independent of the initial state. The simulative results show that, compared with the proportional-integral control and the fixed-time fractional-order sliding mode control, the system has shorter convergence time and smaller oscillation amplitude under PTFOSMC, which validates the effectiveness and superiority of the proposed strategy. |
| Key words: wind-thermal-bundled system oscillation suppression predefined time fractional-order sliding mode control fractional-order differential Lyapunov function |
