LOW VOLTAGE RETICULATION AND SIZING OF DISTRIBUTION TRANSFORMERS

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Electric power utilities are faced with common challenge of determining the best or optimal transformer radii for distribution transformers as well as loss reduction. Inaccurately estimating transformer radii ultimately leads to overloading/under loading of transformers, escalating capital costs, reliability issues and high losses. This project is about coming up optimal distribution transformer zone radii or circuit length for urban and rural areas that will lower losses. We studied data that had been collected for a month which included the transformers in different areas, the transformer sizes, and the maximum demand as seen on the transformer within that month, the number of customers connected to a particular transformer, the loading factor and the monthly technical losses. We realized that the highest technical losses are found are found in 200kVA transformers. We sampled these areas choosing case study areas in urban and rural, designed their circuits using Retic Master and studied the graphs to determine the scenarios we used for example relieving loads from transformers that were previously overloaded, changing the transformer locations, and upgrading the transformer to see which was the best solution for the area. All this was done while observing mainly the power quality and circuit length. (2.086Mb)
Electric power utilities are faced with common challenge of determining the best or optimal transformer radii for distribution transformers as well as loss reduction. Inaccurately estimating transformer radii ultimately leads to overloading/under loading of transformers, escalating capital costs, reliability issues and high losses. This project is about coming up optimal distribution transformer zone radii or circuit length for urban and rural areas that will lower losses. We studied data that had been collected for a month which included the transformers in different areas, the transformer sizes, and the maximum demand as seen on the transformer within that month, the number of customers connected to a particular transformer, the loading factor and the monthly technical losses. We realized that the highest technical losses are found are found in 200kVA transformers. We sampled these areas choosing case study areas in urban and rural, designed their circuits using Retic Master and studied the graphs to determine the scenarios we used for example relieving loads from transformers that were previously overloaded, changing the transformer locations, and upgrading the transformer to see which was the best solution for the area. All this was done while observing mainly the power quality and circuit length. (2.086Mb)
Author
SENKUMBA, ISAAC
SENKUMBA, ISAAC
KYAMPANSIIMA, KICONCO
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http://hdl.handle.net/20.500.12281/4230
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