Journal of Electronic Systems Adeel Saleem, Rabia Arshad, Danista Khan 6 3 2016 The smart-power-grid brings opportunity and challenges to the power system protection and control. In previous century, there has nothing variation in the fundamental structure of the electrical power grid and vehicle networks. Rapid progress in communication and measurement techniques sharpens progress of Wide area Protection depend on the wide area measurement system. Smart-power-grid is considered as modern electric power grid basic physical and organizational structure and facilities for good efficiency and reliability. It is through automatic control high power converters, modern communications infrastructure, sensing and metering technologies and modern energy management techniques depend on demand energy and network availability. In this paper, the background of smart-power-grid is explained. Smartpower- grid latest technologies It provide the non- conventional instrument transformer clock synchronization and data synchronization offer great opportunities for development of Wide area Protection. According to this the concept the content and promote the Wide area Protection. Some of the key technologies like wide area measurement system and wide area communication system are analyze. At the end development of Wide area Protection in smart-power-grid are prospected.