Abstract

In power system, frequency is one of the main factor which affects the A.C. system. In order to maintain the performance of the system, frequency need to be controlled on the generation part as well as load side. In this paper, fractional order PID (FOPID) controller is designed for the three-area load frequency control (LFC) in an interrelated power system (PS) in MATLAB simulation. The LFC of generating units have used in frequency control of the dissolute response in the power system. FOPID controller parameters are intended using the Flower Pollination Algorithm (FPA) for the minimize error. The prototype of generating units with FOPID controller is simulated in MATLAB/SIMULINK platform. In this study, simulation researches on a three-area LFC with different generating units are considered. The objective function is the minimization of the Integral Squared Error (ISE) for the optimum strategy of FOPID parameters. These results presented that the FOPID controller was vital to the parameter variations in the considered system. The simulation results specialized much better performance of FOPID controller for LFC in comparison with other FOPID controllers available in the literature. FPA-FOPID Controller in the system as compared to the existing ICA-FOPID and GA-FOPID controller in literature. The result shows that the FPA result outperforms as compared with other results.

Highlights

  • The load frequency control (LFC) is a significant part of working and regulatory of the power system in large network connected to the tie-lines

  • This paper described the fractional order PID (FOPID) controller parameters are tuned by the Flower Pollination Algorithm (FPA) technique

  • The FOPID controller parameters are tuned by FPA for solving the LFC problem to minimize the change in frequency of three-area generating units

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Summary

Introduction

The LFC is a significant part of working and regulatory of the power system in large network connected to the tie-lines. 2017 [1,2,3] have presented the EHO technique for the application of LFC and tuning the PID parameters. 2016 [8] have presented the FPA technique for the application of LFC and tuning the FOPID parameters. Chiranjeevi, 2014 [10] have reported the LFC system for interconnected PS and FOPID parameters are tuned by the PSO technique. 2018 [12] have presented the FPA technique and tuned the FOPID parameters. Tie-line power deviation within the acceptable limits for different operating conditions and load demand for the LFC problem is preferred. This paper described the FOPID controller parameters are tuned by the FPA technique. The proposed FOPID controller according to FPA technique improved the dynamic performance of variation in frequency.

System Description
Fractional Calculus
PID Controller
FOPID Controller
Global Search of FPA
Pollination
Application of FPA
Simulation and Discussion
Findings
Performance Comparison
Conclusions
Full Text
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