Sine-Cosine Algorithm Based Automatic Load-Frequency Control of Hybrid Microgrid with Demand Side Management

This work proposes an isolated hybrid microgrid with controllable loads for frequency control with demand-side management using Sine-cosine algorithm (SCA). The proposed microgrid includes solar thermal and wind-based renewable units, Diesel generator along with some controllable loads like Heat-pumps, Hybrid electric vehicles, and Freezers for demand-side management. The model is designed in MATLAB by taking into consideration of all the controllable and the critical loads. Initially, the system responses are simulated using Particle swarm optimization (PSO) and SCA, which interprets the superior performance of SCA over PSO. Further results are discussed using SCA optimized PID controllers to study the optimal frequency responses of the proposed microgrid in some specified scenarios to validate the system robustness.