Performance study of ADRC and PID for concurrent Frequency-Voltage Control of Electric Vehicle Incorporated Hybrid Power System

A proportional-integral-derivative (PID) controller has established extensive applications in power system control industry. However, the model driven control law inspite of error driven and noise deprivation in the derivative regulator lead to a undesired control approach using PID controller. To overcome this challenge, a 2nd order error-driven control law based Active-disturbance-rejection-control (ADRC) strategy is developed in the present work. A comparative study of PID and ADRC is done in the present work. The comparison is validated on an IEEE-39 bus system based on concurrent control of system frequency, voltage and corresponding tie-line control using various generations in the form of solar, thermal, geo-thermal and wind plants. Modern day electric vehicles are integrated with different buses of the present hybrid power system. ADRC proves to be more efficient for regulating the system dynamics with respect to PID controller possess sound disturbance rejection capability. ADRC controlled system exhibits low dynamic characteristics and is highly stable to system disturbances.