The paper present the achievement of our project team, which content a software application through has been obtained the increasing efficiency of operations of overhead transmission lines. The OHTL maintenance, in current context of technical development and restricted management, technical and economic requirements, can be achieved only through appropriate application of information technologies. Climate, economic and technical changes have a major impact on the operation, maintenance and development of high voltage power networks. In this context of the development of telecommunication and information technology and equipment remote monitoring technologies, different ways of operating the overhead power lines have been developed. In this way, for this project base on a study for application new technologies in power grids, the team has developed an IT system to help on the management of OHTL, which protection and safety lines corridor maintenance program is part of. The paper present a piece of this system, emphasizing on software and methods applied by our Company for operation and maintenance of overhead line. Practical achievements will be presented, which content user method of this program. Also, the training and improvement of the human operators regarding the operation and maintenance of the OHTL will be presented, which will be carried out through a specialized center: Center of Excellence in Energy “Stelian Gal”.