Steam energy plants are the fundamental source of electricity in the world, which
has a large share of renewable energy. Load changes impact the frequency of electrical
networks. Frequency stabilization is very important based on the boosting influence
of renewable power sources in energy systems. The main task of load frequency control
is to keep the system frequency according to the determined nominal value and to maintain
the correct amount of exchange energy between the control areas. Maintaining the output
power and actual frequency of the interconnected energy system and controlling the
variation in power along the connection link between control areas are the central
objectives of load frequency control (LFC). In this work, the purpose is to analyze
and investigate load frequency control in a two-area energy system. Each area contains
a steam turbine with a reheater. The system equations are expressed in state space
and analyzed in MATLAB software. The simulation outcomes demonstrate the impact of
changes in the gain parameters of the equivalent power system model and high-pressure
coefficient in an area.
