Frequency regulation of Interconnected power system with Different controllers

Abstract

This analysis work mainly focuses on advancement of frequency stability of newlineinter-related electrical Power System (PS) by employing fusion techniques like Sine newlineCosine Improved Whale Optimization Algorithm (SCiWOA) for tuning Combined newlineFuzzy Proportional Integral Derivative (CFPID) Controller in Automatic Generation newlineControl (AGC) of Power System. The mismatch between generation and demand give newlinerise to deviation in nominal recurrence of the system and scheduled tie-line power flows. newlineAGC is designed and implemented in power systems which automatically balances the newlineload demand and generated power in each command area. The initial adjustment of newlinefrequency is achieved by primary speed control loop and then fine adjustment is done by newlinesupplementary controller which resets the frequency error to zero through integral action newlineof Integral (I)/ Proportional-Integral (PI) / Proportional-Integral-Derivative (PID) newlinecontroller / Multistage PID regulator. Therefore, performance of AGC mainly depends newlineon suitable gains of different controllers. newlineInitially, the suggested approach is examined in an interrelated two-area thermal newlinepower system and the superiority of the proposed approach has been established by newlinecomparing the results with recently published methods like conventional Ziegler Nichols newline(ZN), Differential Evolution (DE), Bacteria Foraging Optimization Algorithm (BFOA), newlineGenetic Algorithm (GA), Particle Swarm Optimization (PSO), hybrid BFOA-PSO and newlinehybrid PSO-PS based controllers for the identical interconnected power system. Further, newlinesensitivity investigation is executed to demonstrate the robustness of the proposed newlineapproach by changing the parameters of the system, operating loading conditions, newlinelocations as well as size of the disturbance. Additionally, the methodology is applied to a newlinethree area hydro thermal interrelated system with appropriate Generation Rate newlineConstraints (GRC). newlineThe first advantages of the SCiWOA adjusted CFPID regulator over hPSO-PS newlineadjusted Fuzzy PI (FPI) regulator, hBFOA-PSO adjusted PI regulator, GA tuned PI newlineregul