• Dr. Binod Kumar Sahu

This paper presents a hybrid Local Unimodal Sampling (LUS)-Teaching Learning Based Optimization (TLBO) optimized Proportional-Derivative-fuzzy-Proportional-Integral-Derivative (PD-FPID) cascaded controller to study the load frequency control (LFC) issue in a three area interconnected thermal power system considering generation rate constraint (GRC). Initially hybrid LUS-TLBO optimized conventional PD-PID cascaded controller is used and the result acquired is matched with that of Bat Algorithm optimized conventional PD-PID cascaded controller. It is proved that the proposed LUS-TLBO based PD-PID cascaded controller is revealing better dynamic performance in all aspects i.e. in terms of settling time, undershoot and overshoot. Then the study is extended to inspect dynamic behaviour of the same power system employing a novel PD-FPID cascaded controller optimized by the proposed hybrid LUS-TLBO algorithm. It is again proved that the proposed LUS-TLBO optimized PD-FPID cascaded controller is performing better as compared to LUS-TLBO based conventional PD-PID cascaded controller. A step load disturbance of 1% is applied in area1 and integral time absolute error (ITAE) is chosen as objection function in designing the proposed controller. Again sensitivity analysis of the proposed PD-FPID cascaded controller is conducted by varying the system parameters and it is seen that the proposed cascaded controller is less sensitive to parametric variations, and therefore there is no need to reset the controller parameters for wide deviation in system parameters.

Automatic Generation Control (AGC), Load Frequency Control (LFC), Fuzzy Logic Controller (FLC), Local Unimodal Sampling (LUS), Teaching Learning Based Optimization (TLBO).

"DESIGN OF LUS-TLBO BASED PD-FUZZY-PID CASCADED CONTROLLER FOR AGC OF A THREE AREA POWER SYSTEM", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 6, page no.102-113, June-2018, Available :http://www.jetir.org/papers/JETIR1806712.pdf

"DESIGN OF LUS-TLBO BASED PD-FUZZY-PID CASCADED CONTROLLER FOR AGC OF A THREE AREA POWER SYSTEM", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 6, page no. pp102-113, June-2018, Available at : http://www.jetir.org/papers/JETIR1806712.pdf