Improvement of transmission line performance using HT superconducting cables in developing countries. Case study of Kenya-Ethiopia interconnector line

Abstract

Power losses encountered during transmission has led to the intensive research in alternate ways of more sustainable, cost effective and efficient means of power transmission. The world today is experiencing fast growth of towns and cities, industrialization and urbanization. This trend has led to the increase in the demand for power and since countries are becoming more populous, more reliable high voltage underground cables which take up less space are preferred. This can be achieved by use of superconductor transmission lines which have experienced tremendous growth in terms of research and development. However, feasibility studies have to be taken to determine whether it is a cost effective and efficient way of power transmission. This research analyses and compares the performance of the conventional cables Vis a Vis the superconducting cable for a specific site with the aim of improving the efficiency of power transmission lines. The analysis will focus on the efficiency, cost, safety and operation of 1200km long, 500kV bipolar HVDC line with a capacity of 2000MW connecting Sodo/Wolaita in Ethiopia and Isinya in Kenya which is currently built using the conventional cable. For the research, a parallel transmission line using superconducting cable will be designed over the same span with all the transmission line parameters in place. The system will be analyzed and a conclusion will be made whether the use of the superconducting cables for power transmission is viable.