Impact of voltage and power factor change on primary distribution feeder power loss in radial and loop type of feeders

In distribution system reducing losses is an important issue during planning and operation because of its technical and economical implications. This paper presents the study of impact of variation in voltage and power factor on power loss in radial and loop type of feeders in the distribution system. The comparison is made in change in loss between radial type and closed-loop type feeders. The line losses are calculated for two different radial feeders, then the feeders are connected with tie line to form the closed loop feeder and losses are calculated. The change in the voltage profile when changed from radial to loop type is evaluated and compared. The impact of upgrading the radial system to loop system on the power loss reduction studied. Various loss reduction techniques discussed. The advantages of system running in the closed loop type over radial are studied and explored the possibility of such systems in the local area at primary distribution voltage level (33 K V). The impact on the system for this conversion is explored.