Optimal Non-Integer Sliding Mode Control for Frequency Regulation in Stand-Alone Modern Power Grids

Applied Sciences

Meysam Gheisarnejad¹  Zahra Esfahani²  Tomislav Dragičević³  Mohammad-Hassan Khooban⁴  Majid Roohi⁵ 

[1] Department of Electrical Engineering, Najafabad Branch, Islamic Azad University, Isfahan 8514143131, Iran;Department of Electrical Engineering, University College of Rouzbahan, Sary 3994548179, Iran;Department of Energy Technology, Aalborg University, DK-9220 Aalborg East, Denmark;Department of Engineering, Aarhus University, 8200 Aarhus N, Denmark;School of Economics and Statistics, Guangzhou University, Guangzhou 510006, China;

关键词: non-integer sliding mode control;    modified sine–cos optimization algorithm;    islanded microgrid;    nonlinear robust control;   

DOI  :  10.3390/app9163411

来源: DOAJ

【 摘 要 】

In this paper, the concept of fractional calculus (FC) is introduced into the sliding mode control (SMC), named fractional order SMC (FOSMC), for the load frequency control (LFC) of an islanded microgrid (MG). The studied MG is constructed from different autonomous generation components such as diesel engines, renewable sources, and storage devices, which are optimally planned to benefit customers. The coefficients embedded in the FOSMC structure play a vital role in the quality of controller commands, so there is a need for a powerful heuristic methodology in the LFC study to adjust the design coefficients in such a way that better transient output may be achieved for resistance to renewable sources fluctuations. Accordingly, the Sine Cosine algorithm (SCA) is effectively combined with the harmony search (HS) for the optimal setting of the controller coefficients. The Lyapunov function based on the FOSMC is formulated to guarantee the stability of the LFC mechanism for the test MG. Finally, the hardware-in-the-loop (HIL) experiments are carried out to ensure that the suggested controller can suppress the frequency fluctuations effectively, and that it provides more robust MG responses in comparison with the prior art techniques.

【 授权许可】

Unknown