Enhancing total transfer capability via optimal location of TCSC in deregulated electricity market

Abstract

In deregulated electricity market, most of the power transferred through the wheeling transaction. Hence, it is very important and necessary to determine the transfer capability of the transmission system before the power dispatch. Series FACTS devices such as Thyristor controlled series compensators (TCSC), with its ability to directly control the power flow can be very effective to total transfer capability of transmission network. Proper location of TCSC plays key role in improving total transfer capability (TTC). From the viewpoint, this paper focuses on the evaluation of the impact of TCSC on TTC via optimal location. Evaluation total transfer capability using TCSC requires a two-step approach. First, the optimal location of the TCSC in the network must be ascertained by Min cut algorithm and then, the mathematical formulation of TTC using Repeated Power Flow (RPF) with fixed TCSC parameters is solved. The proposed method is tested and validated for locating TCSC in IEEE 14-, IEEE-30 bus test systems. Results show that the proposed method is capable of finding the best location for TCSC installation to improve total transfer capability. © Springer-Verlag Berlin Heidelberg 2014.