Title :
Reducing the effect of vortex rope oscillation on hydro units by power system stabilizer designed using Genetic Algorithm
Author :
Mallik, Jiwan Kumar
Author_Institution :
Indian Inst. of Technol. Delhi (IITD), New Delhi, India
Abstract :
The operation under part load condition is one of the major difficulties in hydro units. Especially severe pressure oscillations can occur for Francis turbine units in part load condition. They are generated by an unsteady vortex behaviour in the draft tube, so-called vortex rope. This paper presents PSS (Power system stabilizer) design for Vortex Rope Oscillation (VRO) in single machine infinite bus system. The main motivation for this design is to stabilize or to control low-frequency oscillation on power systems caused by VRO. The optimal parameters of the PSS are obtained employing Genetic Algorithm (GA) using Integral of Time Multiplied Absolute Value of the Error (ITAE) criteria. Finally, the simulation results of PSS behaviour for Vortex Rope Oscillation are discussed.
Keywords :
genetic algorithms; hydraulic turbines; power system control; power system stability; Francis turbine units; GA; ITAE; PSS; VRO; genetic algorithm; hydro units; low- frequency oscillation control; power system stabilizer; single machine infinite bus system; vortex rope oscillation; Damping; Electron tubes; Generators; Genetic algorithms; Hydraulic turbines; Oscillators; Power system stability; Cavitation Vortex Rope; Genetic Algorithm; Hydropower Plant; Power System Stabilizer;
Conference_Titel :
India Conference (INDICON), 2011 Annual IEEE
Conference_Location :
Hyderabad
Print_ISBN :
978-1-4577-1110-7
DOI :
10.1109/INDCON.2011.6139582
