ROBUST INTERLINE POWER FLOW CONTROLLER DESIGN FOR DAMPING OF LOW FREQUENCY OSCILLATIONS IN POWER SYSTEMS WITH WIND POWER SOURCES

摘要

T his article proposes the robust c ontroller design of the interline power flow controller (IPFC) in the power system consisting of the single synchronous generator connected to the infinite bus based on the modified Heffron-Phillip’s model. The controller is used so as to control the frequency robustly and to improve the power system stability due to the uncertainty of power produced from the installed wind turbine in the system. The power from the installed wind turbine is introduced into the system and treated as the uncertainty during the design process. The H_∞ loop-shaping design procedure (H_∞ LSDP) is adopted as the design procedure in this study. The results reveal that H_∞ LSDP can achieve higher performance and more robustness compared with lead-lag compensators of which the parameters tuned by the genetic algorithm.