Bibliographic citations
Arellan, W., (2022). Análisis de armónicos y compensación de energía reactiva para mejorar la calidad del sistema eléctrico en un hospital de tercer nivel [Trabajo de suficiencia profesional, Universidad Nacional de Ingeniería]. http://hdl.handle.net/20.500.14076/24876
Arellan, W., Análisis de armónicos y compensación de energía reactiva para mejorar la calidad del sistema eléctrico en un hospital de tercer nivel [Trabajo de suficiencia profesional]. PE: Universidad Nacional de Ingeniería; 2022. http://hdl.handle.net/20.500.14076/24876
@misc{renati/1751457,
title = "Análisis de armónicos y compensación de energía reactiva para mejorar la calidad del sistema eléctrico en un hospital de tercer nivel",
author = "Arellan Cerna, Williams Roger",
publisher = "Universidad Nacional de Ingeniería",
year = "2022"
}
This research has the purpose of analyzing the levels of harmonics and compensation of reactive energy, in the electrical system of a third level hospital, because it represents a risk of quality of electrical energy, for the correct functioning of biomedical equipment and electromechanical equipment. In this sense, the levels of harmonics present in the electrical installation are verified, the latter made up of 2 independent general circuits called TGN-1 and TGN-2, each with its respective medium voltage power transformer. The harmonic parameters obtained were compared with the maximum permitted levels of the international standard IEEE STO 519-2014. In addition, the level of the power factor of the electrical system was verified, which was able to evaluate an efficient compensation of reactive energy, considering as a reference the Technical Standard for the Quality of Electrical Supply (NTCSE-2010). To carry out the present study, data was recorded through a METREL MI 2892 power quality network analyzer instrument, installed in the low-voltage electrical distribution room, downstream of the medium-voltage power transformers. Likewise, for an adequate analysis, the information of the electrical system was verified with field inspection and the review of the distribution of electrical charges, through single-line electrical drawings, determining the points of common coupling, according to IEEE 519 (2014). The present study concludes that the bank of automatic capacitors corresponding to the TGN-2 circuit is operating continuously with an average inductive displacement power factor of 0.992. Simultaneously, the bank of automatic capacitors corresponding to the TGN-1 circuit is energized, but without operating with an average capacitive power factor of 0.981, since the circuit is made up of predominant capacitive loads. Regarding the levels of total harmonic distortion, total demand distortion and harmonic indices, it was verified that they do not exceed the maximum limit allowed by IEEE 519 - 2014, with the exception of the individual current harmonic of order 5º, with values of 19.33% of the fundamental, the limit being 10%. Likewise, the variations of electrical voltage, the unbalance of the three-phase network and the determination of the K factor corresponding to each circuit were analyzed. Finally, some recommendations are made for unfavorable conditions of the electrical system, such as the installation of an active filter tuned at the common washing point, which allows blocking the predominant 5th order harmonic, improving the total demand distortion by 58.23%; and for voltage variations, it is recommended to increase the transformation ratio, so that the electrical voltage on the low side decreases, without exceeding the limits tolerated by the NTCSE, improving the supply voltage by 48.52% and 53.48% corresponding to TGN-1 and TGN2 boards.
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