Abstract:
As the interconnected power system, transmits the power from one
area to another, frequency will be inevitable deviate from scheduled
frequency, in addition to both the active and reactive power demands are
continually changes with rising and falling trend, any mismatch between
system generation and demand results in change in system frequency that is
highly undesired excitation of generator must be regulated in order to
match the reactive power demand, otherwise bus voltage falls beyond the
permitted limit.
This thesis presents new model for each component of Automatic
generation control (AGC) and automatic voltage regulator (AVR) loops
considering generator rate constraints (GRC) of one and two areas
interconnected thermal power system.
The response with GRC is compared with the analysis done without the
Generation Rate Constraint. Although the frequency deviation was found to
be less with suitable controllers when the GRC is not considered, it is not
the actual frequency deviation. When GRC is considered the actual
frequency deviation can be found and then accordingly the controller is
tuned. So that the desired frequency and power interchange with
neighboring systems are maintained in order to minimize the transient
deviations and to provide zero steady state error in appropriate short time.
Further the role of automatic voltage control is to maintain the terminal
voltage of synchronous generator in order to maintain the bus bar voltage,
results are obtained using MATLAB SIMULINK software.
