Modelo matemático y construcción de dos elementos resistivos, para el análisis de sobretensiones debido a impulsos de tipo maniobra en alta tensión.

Abstract

The following work has as their principal topic the mathematical model of a circuit for the generation and measurement of impulse voltages, this circuit has the capacity of simulate the atmospheric phenomenon that causes the discharge of switching maneuver Its purpose is to provide the high voltage laboratory of the Salesian Polytechnic University with two resistive elements that are coupled to existing equipment, in order to generate impulse voltages in the laboratory. Based on a mathematical analysis that determine the levels of resistances to generate maneuver type impulses, the coiled wire resistors are constructed and encapsulated in resin to avoid high temperatures in the laboratory tests. Once the resistance values have been obtained, it must be taken into account that they must comply with safety standards such as insulation resistance, proceed to perform tests in the laboratory for practical simulation and compare the actual values with the established values In the IEC 60071-1 standard. After the tests in the laboratory, the data of the pulse signal is extracted, to be tabulated in the MATLAB program and then compared with the pulse signal of the mathematical modeling. In this result it is verified that the elements handle Tp and T2 times within the established parameters and are suitable for maneuver type tests.