• A. VAMSI KRISHNA
• N. VIJAYA ANAND

In this paper presents a design of PI controller for the single area load frequency control in the interval model. In the rapid development in the world, there was a ineluctable demand of power with maintaining good quality. In order to maintain demand of power with good quality power system has an effective controller for the load frequency control. The uncertainty of the parameters and external disturbances rejections continue to retain the stability are the major issues while design of load frequency control for the engineers. In this paper a PI control is designed for the single area load frequency control in the interval model. The interval analysis of plant is carried out by using Kharitonov theorem and the complexity of the system can be reduced by using model order reduction (MOR). For this MOR the Routh approximation is used in this paper and the analysis and results are carried for the reduced model. From the results it is observed that the controller gives good performance to stabilize the system for the wide range of variations in the system parameters.

Kharitonov Theorem, Interval model, Model order reduction, Routh approximation, Load frequency control (LFC).

"Design of Controller For The Single Area Load Frequency Control In Interval Model ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 8, page no.1053-1058, August-2018, Available :http://www.jetir.org/papers/JETIR1808456.pdf

"Design of Controller For The Single Area Load Frequency Control In Interval Model ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 8, page no. pp1053-1058, August-2018, Available at : http://www.jetir.org/papers/JETIR1808456.pdf