Distribution automation strategy implemented in distribution utility "Elektroistra" — Croatia

Fast fault response, high reliability for energy distribution and low maintenance costs are needs that has to be accomplished in the era of deregulation of power industry. To coup with these demands, initiatives have to be done with recent technologies in control and supervision systems. Implemented solutions have to be reliable with minimal errors and with communication protocols between bay level, station level and center level. Many problems can be solved with installation of proper hardware but communication system has proved to generate most of the problems. 100% reliable communication link is not possible to achieve but it is possible to minimize the problems by implementing various types of communication links (UHF, optics, classic cable line, Ethernet, Frame Relay).