Advanced technologies in power transmission system

The aim of this paper is to provide a global overview of the technological advances in power transmission, outlining the implications and future policy options for developing countries. There are several ways to improve power transmission technologies, ranging from the introduction of new concepts, such as half-wave, higher phase order, or microwave transmission, to improved applications of old concepts, such as high voltage direct or alternating current. Some of the improvements come from the need to reduce costs while maintaining overall reliability-others from the need to overcome technological barriers, and-might be related to the use of new materials or equipment and/or to a better use of the land and protection of the environment. Several materials and electronic equipment technologies are being introduced in the transmission networks of industrialized countries, increasing reliability and lowering costs.