In the deregulated power systems, the optimal placement of TCSCs is a solution for enhancing the power system’s stability. The TCSC is the first series of a FACTS device and it is good in compensating the reactance of the transmission line, and thereby increases the power flow via the transmission line. In this research work, the optimal placement and sizing of TCSC is achieved with the aid of an optimization algorithm referred as MPU-WWO, which is the conceptual improvement of standard WWO algorithm. Then, to achieve the optimal placement of TCSC, the objectives such as, “minimizing the congestion, reducing the reducing the investment cost and increasing the transient stability” are considered. The proposed optimal location and sizing of TCSC is tested in “IEEE 24 test bus system and the IEEE 9 test bus system” in terms of investment cost, Congestion cost as well. When the count of TCSC=3, the lowest congestion cost is recorded as 500($) by the proposed work with MPU-WWO, while the proposed work with PSO, ABC, GWO, DA and WOA records the congestion cost as 530($), 510($),555($),510($) and 554.74($).