Modified FOPID Controller for Frequency Regulation of a Hybrid Interconnected System of Conventional and Renewable Energy Sources

Fractal and Fractional

article

Amil Daraz¹  Suheel Abdullah Malik³  Abdul Basit¹  Sheraz Aslam⁴  Guoqiang Zhang¹ 

[1] School of Information Science and Engineering, NingboTech University;College of Information Science and Electronic Engineering, Zhejiang University;Department of Electrical Engineering, FET, International Islamic University;Department of Electrical Engineering, Computer Engineering and Informatics, Cyprus University of Technology

关键词: automatic generation control;    fractional order PID controller;    load frequency control;    renewable energy source;    jellyfish swarm algorithm;    optimization techniques;   

DOI  :  10.3390/fractalfract7010089

学科分类：社会科学、人文和艺术（综合）

来源: mdpi

【 摘 要 】

In this article, a fractional-order proportional-integral-differential (FOPID) controller and its modified structure, called a MFOPID controller, are presented. To guarantee optimal system performance, the gains of the proposed FOPID and MFOPID controllers are well-tuned, employing the Jellyfish Search Optimizer (JSO), a novel and highly effective bioinspired metaheuristic approach. The proposed controllers are assessed in a hybrid system with two domains, where each domain contains a hybrid of conventional (gas, reheat, and hydro) and renewable generation sources (solar and wind). For a more realistic analysis, the presented system model includes practical limitations with nonlinear characteristics, such as governor dead zone/band (GDZ/GDB), boiler dynamics, generation rate limitation/constraint (GRL/GRC), system uncertainties, communication time delay (CTD), and load changes. The suggested methodology outperforms some newly developed heuristic techniques, including fitness-dependent optimizer (FDO), sine-cosine algorithm (SCA), and firefly algorithm (FA), for the interconnected power system (PS) of two regions with multiple generating units. Furthermore, the proposed MFOPID controller is compared with JSO-tuned PID/FOPID and PI controllers to ascertain its superiority. The results signify that the presented control method and its parametric optimization significantly outperforms the other control strategies with respect to minimum undershoot and peak overshoot, settling times, and ITSE in the system’s dynamic response. The sensitivity analysis outcomes imply that the proposed JSO-MFOPID control method is very reliable and can effectively stabilize the load frequency and interconnection line in a multi-area network with interconnected PS.

【 授权许可】

CC BY