Abstract
Any society's economy depends heavily on a stable
electrical power infrastructure, and its collapse could have
a major impact. Various studies are being conducted to
attain the power system's dependable functioning. Devices from Flexible AC Transmission Systems
(FACTS) can regulate power flow in the transmission
system to reduce loop flows, ease congestion, and
maximize asset use. A series FACTS device based on a
voltage source, the Static Synchronous Series
Compensator (SSSC) offers inductive or capacitive
compensation that is not dependent on line current. The
voltage is injected in quadrature with the line current by
the SSSC, a voltage source inverter that is coupled in
series with the transmission line. Due to the advancement
of several mining development projects in the northwest
(Geita, Musoma, and Shinyanga) and the economic
growth occurring in the central (Dodoma) and
northeastern (Arusha and Kilimanjaro) regions of
Tanzania, the demand for electrical power has grown in
recent years and is predicted to continue growing in the
northern part of Tanzania. Although hydroelectric sources
in the south provide the majority of the power for the
north, there is an urgent need to expand the capacity for
power transmission from the south to the north. There is a
power shortage in the north grid as a result of rising load
demand. The active and reactive power flow into the line
is described in this study in order to improve the
transmission line's power transmission capabilities and
provide correction utilizing SSSC. Insulated gate bipolar
transistors (IGBTs) were used in the design of a three- phase, three-level, neutral point clamped (NPC) voltage
source converter. The Pulse Width Modulation (PWM)
control technique was used in the design of the voltage
source converter control circuit. Research has been done
on the north regions' peak demand. In order to estimate
the load for the upcoming years, the load demand forecast
for Tanzania's northern areas has been completed in this
article. The transmission line's single line diagram that
was coupled in series with the SSSC via a coupling
transformer was modelled in Simulink/MATLAB.According
to the simulation results, the SSSC performed satisfactorily in
terms of boosting power transmission capacity