Title :
The source and damping of local (cc. 1.2 Hz) and inter area (0.02…0.6) Hz oscillations
Author :
Kiss, Lajos ; Zerényi, József
Author_Institution :
Tech. Univ. of Budapest, Budapest
Abstract :
Our ten years´ experience has showed that a PSS realized by first order controlling stages is not efficient in 0.02...0.6 Hz frequency domain. In addition, these instruments have a disadvantage: damping the active power oscillations are the source of reactive power oscillations, which are exported into the network. So a PSS tuned 0.25 Hz are rejected by experts of power plants. This paper describes our method, revealing the source of the cc. 0.25 Hz frequency oscillations, and damping these by using a supplementary stage installed into the turbine governor. Damping oscillations in a lower frequency range we propose an appropriate setting of the turbine Static Load Frequency characteristics.
Keywords :
power system stability; reactive power; active power oscillations damping; damping oscillations; interarea oscillations; power plants; turbine governor; turbine static load frequencies; Control systems; Damping; Frequency; Power generation; Power systems; Pressure control; Servomechanisms; Servomotors; Tuning; Turbines; Constructing and Tuning of PSS; Damping of active power oscillations; Excitation systems; Inter-area oscillations; Large electric systems cooperation; Power System Stabilizer (PSS); Turbine governor systems;
Conference_Titel :
Power Tech, 2005 IEEE Russia
Conference_Location :
St. Petersburg
Print_ISBN :
978-5-93208-034-4
Electronic_ISBN :
978-5-93208-034-4
DOI :
10.1109/PTC.2005.4524353
