“Dimensionamiento de un sistema de pruebas de voltaje de impulso para transformadores de distribución y potencia de hasta 10 MVA, clase 69 kV y hasta 3 000 msnm, sumergidos en aceite”.
The present research, carries out the study of requirements specified in the international norms IEC and ANSI/IEEE, analysis and recommendations of several specialists in transformer testing and impulse voltage test systems for distribution and power transformers immersed in insulating liquid, in or...
Tallennettuna:
| Päätekijä: | |
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| Aineistotyyppi: | masterThesis |
| Kieli: | spa |
| Julkaistu: |
2023
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| Aiheet: | |
| Linkit: | http://repositorio.utc.edu.ec/handle/27000/11634 |
| Tagit: |
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Lisää tagi | Yhteenveto: | The present research, carries out the study of requirements specified in the international norms IEC and ANSI/IEEE, analysis and recommendations of several specialists in transformer testing and impulse voltage test systems for distribution and power transformers immersed in insulating liquid, in order to carry out the sizing of a pulse voltage test system for transformers up to 10 MVA, class 69 kV up to a height of 3,000 meters above sea level (msnm). The requirements are shaped by the test voltage levels, depending on the winding voltage classification, impulse wave type front and tail times, tolerances for voltage and waveform times, number, sequence of types and impulse level to apply, among others. The sizing describes step by step the methodology by which the technical characteristics and requirements that the system must have to carry out the impulse voltage tests, both in the crest voltage, as well as in specific front and tail times. The results were evaluated through 87 simulations of 40,000 data each performed in Matlab/Simulink. Additionally, the simulations were evaluated with the results of laboratory tests of high voltage tests on distribution and power transformers. The values obtained during simulation and laboratory tests are excellent as the deviations are less than 3 % at the voltage level, 8 % and 12 % at the front and tail times, when the latter have a tolerance of 30 % and 20 % respectively. Finally, the financial evaluation was carried out for the implementation of an impulse voltage test system in a high voltage laboratory for a manufacturer of distribution and power transformers, whose results, faced with a pessimistic export scenario, are favourable to the evaluation criteria TIR, NPV and recovery period. |
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