Solving Optimal Reactive Power Dispatch Problem with the Consideration of Load Uncertainty using Modified JAYA Algorithm

Abstract

The major concern in the field of power system is the voltage stability and transmission efficiency. Many studies have been going on in this topic and the optimal reactive power dispatch (ORPD) problem is one of those problems which help us to peruse in the direction towards obtaining a more economic and stable system. It helps in enhancing the system stability and also increasing its efficiency. This problem is solved using different optimization techniques to minimize the real power losses and improve the voltage stability of the system.Since, the load demand of the system is not fixed and keeps varying all the time, here the concept of load uncertainty is considered for solving the objective functions of the problem. Thus, this helps in studying the practical scenario of the ORPD problem with the implementation of load variations in the system. The optimal values of the control variables of the system are determined to obtain the optimal solution to the problem. It is solved for determining the optimum solution of the control variables and minimizing the power losses and voltage deviation of the buses. Here, the problem is solved as a single objective function with the implementation of the load uncertainty, and tested for IEEE 30 and 57-bus systems. The objective functions are solved individually using the JAYA and MJAYA algorithms, along with many other well established optimization techniques. The results obtained proved the dominance of the proposed technique amongst others.