Ultra High-Voltage Overhead Lines (UHV OHL) currently are successfully applied for solving two problems. The first case is powerful interconnection of two or more electric power systems. The second one is transition of significant power flows from generation areas to consuming areas – densely populated urban agglomerations and industrial centers. Longitudinal compensation installations are integral part of long-distance UHV OHL. The possibility of designing self-compensated OHL is considered in the paper.