There are rising challenges in installing High Voltage Direct Current (HVDC) to Tanzania power grid to significantly improve network controllability and system security. In addition, to expand generation capacity and to increase bulk power transmission capacity over long distances, feasibility study for installing HVDC in Tanzania power grid needs to be performed. Therefore, this paper presents the modeling and analysis of bipolar HVDC proposed for new Iringa-Shinyanga interconnection of 1,000 MW/±400 kV. This paper first describes the needs of HVDC link in Tanzania power grid. Then, we propose the modeling of bipolar HVDC for 667 km between Iringa and Shinyanga. We analyze the proposed HVDC model under steady state and transient conditions. Simulation results show that the basic characteristics of HVDC model.