![](bg5.png)
The following can be concluded from the above
results: lts:
1) The new optimal design of VSC using TS
algorithm improves the dynamical
behavior of the LFC system when
compared with other design methods
reported in literature. This is depicted in
Figures 2(b) and 3(a).
1) The new optimal design of VSC using TS
algorithm improves the dynamical
behavior of the LFC system when
compared with other design methods
reported in literature. This is depicted in
Figures 2(b) and 3(a).
2) A smooth control effort is obtained. This
is shown in Figures 2(d) and 3(b).
Inclusion of the deviation in the control
effort into the objective function, equation
(5), reduced the chattering in the VSC.
2) A smooth control effort is obtained. This
is shown in Figures 2(d) and 3(b).
Inclusion of the deviation in the control
effort into the objective function, equation
(5), reduced the chattering in the VSC.
3) The proposed VSC showed a robust
behavior, Figure 2(c).
3) The proposed VSC showed a robust
behavior, Figure 2(c).
4) Nonlinearities can be easily included into
the studied model. In this paper, the
proposed VSC was applied to LFC models
with governor deadband and GRC
nonlinearities.
4) Nonlinearities can be easily included into
the studied model. In this paper, the
proposed VSC was applied to LFC models
with governor deadband and GRC
nonlinearities.
7 CONCLUSION 7 CONCLUSION
In this paper, Tabu Search algorithm was used in the
optimal design of VSC applied to the load frequency
control problem. A robust controller with smooth
control signal was designed efficiently for a single
area LFC system that incorporates nonlinearities.
Comparison with other reported design methods
showed promising results and an improvement in the
dynamical behaviour of the LFC system.
In this paper, Tabu Search algorithm was used in the
optimal design of VSC applied to the load frequency
control problem. A robust controller with smooth
control signal was designed efficiently for a single
area LFC system that incorporates nonlinearities.
Comparison with other reported design methods
showed promising results and an improvement in the
dynamical behaviour of the LFC system.
ACKNOWLEDGEMENT ACKNOWLEDGEMENT
The authors would like to acknowledge the support
of King Fahd university of Petroleum and Minerals.
The authors would like to acknowledge the support
of King Fahd university of Petroleum and Minerals.
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Figure 3: Case II: (a) Frequency deviation (b) Control effort
(b)
(a)
OPTIMAL DESIGN OF VARIABLE STRUCTURE LOAD FREQUENCY CONTROLLER WITH NONLINEARITIES
USING TABU SEARCH ALGORITHM
31