Impact of Superconducting Magnetic Energy Storage on Frequency Stability of an Isolated Hybrid Power System

Due to the fast response of superconducting energy storage system, it may improve the stability of system frequency. This paper proposed the modeling and control of a hybrid Wind Power, Diesel-Engine Generator (DEG) - Superconducting Magnetic Energy Storage system connected to an Isolated power system. A case study on the impact of SMES operations on the frequency stability of Hybrid System has been carried out. The limits on the inductor (coil) current due to the possibilities of discontinuous conduction in the presence of large disturbances and limited storage capacity have also been incorporated. The modeling of wind power is also presented and analyzed for a time period of 24-hours with varying wind velocity. Hybrid system has analyzed in the Mat lab Simulink environment. Simulation results indicate that SMES system can contribute to frequency stability in both cases when the load increases and also when the load drops. This feature of SMES system will be helpful if it is operated along with a hybrid Wind-PV System.