European Centre for Research Training and Development UK
Abstract
Slack bus is a bus with generating unit and used to balance the real power (P)
and reactive power (Q) in the power system while performing load flow studies. This study
therefore, investigated the best slack bus suitable to be used in the load flow study of the
Nigerian 330-kVtransmission network with nine (9) generating stations. The method involve the
load flow analysis of the existing network with Egbin, Shiroro and Kanji generating stations
chosen as a slack bus at different instances and simulated using Newton-Rapson method and
Gauss Seidel. This study revealed that the use of Egbin power station as a slack bus brought
about the lowest power mismatch in the network. The result also indicated violation of voltages
in some of the network and high reactive power los
