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Project describes generator refurbishment effects on efficiency and performance in Rama HPP, indicating improvements in output and losses.
The paper describes the project and design features of the refurbished and old generators as well as generator design and its main components. Technical data of old and refurbished generators such as temperature rise of active parts, excitation data, reactance and resistance of armature and field windings, power loss data, and generator efficiency are given. In spite of output increasing by 10 MVA, the power losses on refurbished generators are lower than on the old generators by 478.5 kW, excluding bearings losses. Also, the temperature rise is lower on refurbished generators, even at maximum continuous load, which is by 21 MVA, or 23.3%, higher than the previous.
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Milojković et al. (2018) studied this question.
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