Line Loss Reduction with Optimal Placement of DGs by using Contingency Analysis of 5 bus system

The implementation of Distributed Generations (DGs) is increasing these days, and they are being utilized in distribution networks with the primary objective of improving system dependability. Also, any operational engineer may defend a power system, which is usually done through online security analysis, i.e. contingency analysis (CA). CA is a tool for analyzing the consequences of various outages like transformer, transmission lines, and other component failing. The Newton Raphson load flow method is used which is the finest load flow technique because it delivers correct results in less time, was used in this study to compute 5-bus system responses. Active power indices and voltage performance indices for single line outage on a five-bus system. Contingency Ranking has been done based on values of overall performance indices. Impact on bus voltage and active power flow has been analyzed before and after single line outages of most severe line contingency. Optimal placement of DGs has been done on ranked bus and line loss reduction has been evaluated. In MATLAB, the method's efficacy was evaluated on the IEEE-5 Bus system. This CA will be helpful to operating engineer for knowing which transmission line outage is severe to take the appropriate action which is risky in the system and with this earlier action can be taken to curtail the cause of breakdown of that specific line.