Department of Electrical and Electronics Engineering, Hindusthan College of Engineering and Technology, 641032, Coimbatore, INDIA
Abstract: This paper describes the dynamic performance of two area interconnected hydro-hydro power systems when subjected to 1% step load perturbation. For this present study, the system is incorporated with conventional Proportional-Integral (PI) controller and Fuzzy Logic Controller (FLC). The dc link is used as system interconnection in parallel with ac tie-lines. The dc link is considered to be operating in constant current control mode and the power flow deviation through dc link is modeled based on frequency deviation at rectifier end. To investigate system performance, optimum PI controller gains are obtained using integral square error (ISE) technique. The responses with these controllers are sluggish. To overcome this drawback FLC is proposed. Time domain simulation is used to compare the dynamic performance. Finally, simulation results shows that FLC has better dynamic control performance than PI controller.
[B. Anand. Load Frequency Control of Hydro-Hydro System with Fuzzy Logic Controller Considering DC Link. Life Sci J2013;10(7s):499-504].(ISSN:1097-8135). http://www.lifesciencesite.com. 77
Keywords: area control error, automatic generation control, fuzzy logic controller, load frequency control.