Mulla, Rumana (16DEE65)Naikwadi, Nasrin (16DEE66)Pawar, Pranavi (16DEE68)Shaikh, Maseera (16DEE78)Khan, YakubHule, Shraddha2019-05-222019-05-2220192250-30212278-8719http://www.aiktcdspace.org:8080/jspui/handle/123456789/30081st National Conference on Technology, Maulana Mukhtar Ahmed Nadvi Technical Campus (MMANTC), Mansoora, Malegaon - Maharashtra, IndiaIn Substation it is difficult to monitor and control the different parameters such as voltage, current, power factor etc. which affect the reliability of the power. As the demand for reliable electric power is become important therefore the technology "Supervisory Control and Data Acquisition system "or SCADA is developed. SCADA system provide better monitoring, control and maintain the reliability of power, it can also extend the life of substations and related equipment by providing current data for troubleshooting small problems before they escalate. This paper evaluates the SCADA system has also provide the difference between the "Numerical Relay" and "Electromechanical Relay"en-USStudent Publication - SoETStudent Publication - EEArticle