PAPER TITLE :TRANSMISSION CAPACITY ENHANCEMENT FOR NIGERIAN POWER TRANSMISSION GRID USING TCSC AND UPFC

FUTA JOURNAL OF ENGINEERING AND ENGINEERING TECHNOLOGY | VOLUME 8 NUMBER 1 2014

Paper Details

  • Author(s) : Melodi A.O. and Akinloye B.O.
  • Abstract:

This study aimed to evaluate the application of Flexible Alternating Current Transmission System (FACTS) for
enhancing transmission capacity (TC) of existing lines in Nigeria's 330 kV power transmission grid (PTG). Two
FACTS devices, Thyristor Controlled Series Converter (TCSC) and Unified Power Flow Controller (UPFC), were
considered and their installation modeled. The PTG was modeled as a complex 28-bus system. Load flow in the PTG
was carried out using Newton-Raphson algorithm – coded and implemented in MATLAB. Optimal locations of the
respective devices were determined using computation of load flow and known sensitivity functions. The required
capacities and pay-back-periods (PBP) on the devices were evaluated using PBP and cumulative gain functions.
The results show that the TC of the existing PTG can be enhanced by installing a TCSC in Ikeja-Ayede single circuit
line and a UPFC in Jos-Gombe single circuit line. PBP analysis showed that investment in TCSC and UPFC will be
recouped in about 3 months and 6 years respectively. This assessment shows that TCSC and UPFC can be deployed
for improving the TC of Nigeria's PTG effectively.