  In this paper a novel approach to load frequency control of a microgrid with
integrated Solar PV and Solar thermal generator is presented. A nonlinear
adaptive controller based on an autoregressive moving average algorithm (NARMA)
is used to control the frequency of the system. The objective of such a
controller is to regulate and minimize frequency deviation due load changes.
Further, a novel metaheuristic approach called Modified Whale Optimization
Algorithm (MWOA) is used for creating an optimal PID controller to be used for
frequency control. Finally, a comparative study between the proposed NARMA-L2
controller, WOA tuned PID controller and conventional PID controller is
presented. From a series of experiments, it is concluded that the proposed
NARMA-L2 controller outperforms other techniques of frequency control and gives
the best result in terms of overshoot and settling time.
