Abstract: One of the main implementation of wireless sensor network is monitoring equipment. Wireless sensor network (WSN) are able for cost efficient monitoring over enormous geo location. Construction of smart grid is based on the internet of thing(IOT) are made. Smart grid is attractive, and it is a new type of intelligent power system realized with the existing transmission and distribution power infrastructure. To pass the electricity to the consumers, we require a high voltage transmission. High voltage transmission line are responsible for transmission of electric power. Electricity is very essential to understand and monitor the behaviour of the system. In this paper, we present a survey of electric transmission line monitoring system, highlight the key concept, and state of art implementation as well as investigate challenges. The goal of this paper is to provide a better understanding of the design challenges of electric distribution line monitoring system and identify important research in this increasing important field.

Keywords: Wireless sensor network (WSN), smart grid, overhead transmission line, electrical distribution system, internet of thing (IOT)