Title :
The impact of flywheel torque of refurbished generator units on the limit switching time in Croatian power system
Author :
Majstrovic, M. ; Sutlovic, E. ; Goic, R.
Author_Institution :
Energy Inst. Hrvoje Pozar, Zagreb, Croatia
Abstract :
In a refurbishment project, possible solutions for old generators in Zakucac and Peruca hydroelectric power plants (HPP), Croatia, are suggested. In the first step, transient processes caused by 3-phase and phase-earth short circuits on all connected transmission lines to Zakucac and Peruca HPPs were analysed on the different power system models. Many computer calculations of transient stability in Zakucac and Peruca HPP and dependent environment of the power system with refurbished generators in these plants were made. Since transient stability in the power system with recommended characteristics of refurbished generator units were satisfied, the impacts of smaller flywheel torque on limit switching time values were considered in a second step.
Keywords :
flywheels; hydroelectric generators; hydroelectric power stations; maintenance engineering; short-circuit currents; switching; torque; 3-phase short circuits; Croatia; Croatian power system; Peruca hydroelectric power plant; Zakucac hydroelectric power plant; computer calculations; flywheel torque; limit switching time; limit switching time values; old generators; phase-earth short circuits; power system models; refurbished generator units; refurbishment project; transient stability; transmission lines; Circuit stability; Flywheels; Hydroelectric power generation; Power generation; Power system analysis computing; Power system modeling; Power system stability; Power system transients; Torque; Transient analysis;
Conference_Titel :
Electric Power Engineering, 1999. PowerTech Budapest 99. International Conference on
Conference_Location :
Budapest, Hungary
Print_ISBN :
0-7803-5836-8
DOI :
10.1109/PTC.1999.826503
