Dynamics and stability of wind and diesel turbine generators with superconducting magnetic energy storage unit on an isolated power system

This paper reports on dynamic system analysis which is carried out on an isolated electric power system consisting of a diesel generator and a wind turbine generator. The 150-kW wind turbine is operated in parallel with a diesel generator to serve an average load of 350-kW. A comprehensive digital computer model of the interconnected power system including the diesel and wind power dynamics with superconducting magnetic energy storage (SMES) unit is developed. Time domain solutions are used to study the performance of the power system and control logic. Based on a linear model of the system it is shown that changes in control system settings could be made to improve damping and optimization of gain parameters and stability studies are done using the Lyapunov technique and eigenvalue analysis. The effect of introducing superconducting magnetic energy storage unit for improvement of stability and system dynamic response is studied