This paper describes the distribution network in detail. In fact, it presents the system of monitoring, control and data acquisition (SCADA) and its historical development. Furthermore, it tells us about the structure and integration of the system and shows its possibilities. The components of the SCADA system are RTU / IED, communication system, the main station and human - machine interface. Two methods which include usage of data obtained from SCADA, are used as an aid in decisionmaking. The hypothesis method is the most widely used method in practice of alarm synthesis. The sequence method is used when there are hundreds of alarms and therefore,the situation is quite clear. But in case the situation is more complicated, when the number of alarms reaches several hundreds or thousands of alarms, the method being used is hypothesis. The future shall bring a new trend of expansion of the SCADA system as an automatic distribution management system (DMS) which will speed up and simplify the management of the electricity distribution system.