Frequency control considerations for modern steam and combustion turbines

Application of System Analysis for Thermal Power Plant Heat Rate Improvement

“…A turbine is constituted of a rotor composed of a tree on which is fixed the dawns and a stator of composed of a structural cover of the stationary deflectors, generally organized of two parts according to an axial plan [9][10][11][12].…”

“…So dawns besides of one meter of length already put serious problems of realization. Besides, the radial heterogeneity of speeds imposes a variable impact of the dawn that present then a left shape whose machining is complex [9][10][11][12].…”

Impact of Overspeed Protection Control on Stability for Islanded Power System

“…When the frequency deviation exceed a dead band, the primary frequency regulation system will open or close the valves with the time const of 1 T and 2 T . The model for the steam turbine comes from IEEE Committee Report (1973) and Bize et al (1999), the model for the primary frequency regulation circuit is from Dai et al (2007a) and Dai et al (2007b). The interceptor valve model is simplified from Kundur et al (1985).…”

Analysis of effects on primary frequency control and power grid stability of different control logic

“…In the analysis of grid stability, many different models of the power system were studied [3][4][5][6][7][8][9][10][11][12][13] . Ref [3] developed several common steam turbine models and the speed governing control systems.…”

“…Based on that, L.N. Bize et al studied the modeling assumptions and discussed the effects of the relevant modules on actual steam turbine dynamic performance in response to grid frequency changes [4] . The PFC characteristics of generators were also studied in Ref [5] mainly focused on the effect of setting a dead band in the governing model.…”