Theoretical and Practical Aspects of Implementing a Low Voltage Express Feeder between Nearby Distribution Transformers to Reduce Annual Losses

KAS, Naile
TOR, Osman Bulent
CEBECI, Mahmut Erkut
YILMAZ, Seyit Cem
Güven, Ali Nezih
Capacity of distribution transformers is usually determined based on peak demand forecasted along a planning period. Peak demand actualizes at different seasons depending on the load characteristics of the transformers. For example, transformers at coastal towns essentially experience peak demand during summer periods. Although such transformers are loaded up to their capacities at summer seasons, their loading level reduces drastically during the off-season periods. This study addresses technical losses of such transformers and presents a solution to reduce the total transformer losses by means of implementing a low voltage express feeder (LVEF) between transformers close by. Total load of two nearby transformers is supplied by only one of the transformers through the LVEF while the other transformer is de-energized during off-season period. Depending on the criteria addressed in this study, this approach enables a decrease in the annual total loss of the system. Study includes a pilot implementation on-site.


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Tor, Osman Bulent; CEBECI, Mahmut Erkut; KAS, Naile; GOKTEPE, Melih; KALKAN, Emrah; YILMAZ, Seyit Cem; GUNDOGDU, Askin; Güven, Ali Nezih (2018-01-01)
This study presents design, technical and economic feasibility analysis, and on-site implementation of low voltage express feeder (LVEF) implementation, which is aimed to reduce off-season technical losses of transformers located at the regions dominated by summerhouses along the Mediterranean Coast. Capacities of such transformers are generally determined considering peak demand during summer season. LVEF implementation is based on the concept of connecting close by transformer couples through an LVEF cabl...
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Citation Formats
N. KAS et al., “Theoretical and Practical Aspects of Implementing a Low Voltage Express Feeder between Nearby Distribution Transformers to Reduce Annual Losses,” 2017, Accessed: 00, 2020. [Online]. Available: