Guest Editorial: Introduction to the special section on planning and operation of transmission grid with applications to smart grid& - From concept to implementation

This special section addresses the challenges and opportunities for the development of a transmission grid with applications to smart grid and brings together the most recent advances from concept to implementation in the field of transmission operation, control, and planning worldwide. The special section covers the design and planning of operation and communication systems of smart transmission grids; state estimation of smart transmission grids; smart voltage and power flow control as well as generalized power network management; wind generation and emission constrained despatching for smart grids; smart demand as power grid services; wide area monitoring, control as well as emergency control. A summary is provided for each of the articles and features presented in this special section.