DYNAMIC PERFORMANCE ENHANCEMENT OF WIND PENETRATED POWER SYSTEM USING SMES AS VIRTUAL SYNCHRONOUS GENERATOR

摘要

This paper analyses the impact of superconducting magnetic energy storage (SMES) as a virtual synchronous generator (VSG) on the transient stability of the wind-penetrated power system. A modified 18-machine, 70-bus, 5-area power system is simulated in MATLAB/Simulink environment. Power command for the SMESVSG unit is generated from frequency deviation and rate of change of frequency deviation for controlling the duty cycle of SMES chopper. System performance is assessed for two different types of disturbances: a step wind perturbation and a three-phase fault in the New England Test System (NETS) and the New York Power System (NYPS). The simulation results show that both frequency deviation and rate of change of frequency deviation (ROCOF) are minimized with SMES as VSG. The transient stability measured in terms of critical clearing time (CCT) verifies that CCT is comprehensively increased compared to other topologies of SMES.