Page 335 - Decision Making Applications in Modern Power Systems

296 Decision Making Applications in Modern Power Systems

FIGURE 11.8 The frequency deviation in the different areas: (A) due to tie-line coefficient
variations and (B) due to governor turbine parameter uncertainties.

The robustness of the used control method in the case of changes, 20.2
and 0.2 per units, in the studied power system parameters, that is, both T t
and T g , is verified by Fig. 11.8. Also in the case of changes, 20.2, 0, and
10.2 per units, in the time constant of the governor and turbines of area 1,
the adopted control method shows better performance.
The maximum frequency deviation and the ST of the frequency
deviation have not been affected in case of the changes, 20.5, 20.25, 0,
10.25, and 10.5, in tie-line synchronizing coefficient as shown in
Fig. 11.8. These results prove the superiority and robustness of the
adopted control strategy where its controllers’ parameters are tuned using
ICA algorithm.