Banca de DEFESA: KAIO CÉSAR RODRIGUES DE OLIVEIRA

APPLICATION OF THE CONCEPT OF CYCLIC LOADS FOR SIZING CONDUCTORS IN PHOTOVOLTAIC PLANTS

Conductors, photovoltaic plants.

The first Industrial Revolution occurred around 1760, started in England, and was characterized by the great technological development that promoted transformations social and economic issues in Europe and the world. The Revolution marked the transition from the period feudal to the capitalist system. It is noteworthy that, before this period, work was done manually by men, women and children, who often turned their homes into workshops to carry out activities, a phenomenon understood as manufacturing. The forces of nature like the wind, the water, fire and human strength were the sources of energy for carrying out work, not having industrial production that caused great impacts to the environment.
From the end of the 18th century, the Revolution promoted intense transformations in the society and in the productive system, with the emergence of steam machines, industries, new work relationships, etc. Industrial expansion promoted an increase in greenhouse gas emissions greenhouse effect in the atmosphere and the consumption of fossil fuels, particularly the coal. Over time, industrial demand and the use of natural resources increased, impacting the environment with deforestation, soil erosion, extraction of raw material; and also brought consequences for the climate, such as floods, waves of heat and the increase in Earth's average temperatures (global warming) due to emission of greenhouse gases, for example. Between the end of the 19th century and the beginning of the 20th century, petroleum derivatives to be the main sources of energy, in addition to fuel for transport and industry in itself. However, with the oil crisis in the 1970s, interest in investments to enable the development of renewable energy and its application in commercial scale. In addition, the growing concern about environmental problems and climate - such as environmental degradation, food security, species extinction of animals, among others - also contributed to awakening a quest to mitigate these impacts. In this way, greater use of energy obtained from renewable sources becomes one of the alternatives for this purpose.

The first Industrial Revolution occurred around 1760, started in England, and was characterized by the great technological development that promoted transformations social and economic issues in Europe and the world. The Revolution marked the transition from the period feudal to the capitalist system. It is noteworthy that, before this period, work was done manually by men, women and children, who often turned their homes into workshops to carry out activities, a phenomenon understood as manufacturing. The forces of nature like the wind, the water, fire and human strength were the sources of energy for carrying out work, not having industrial production that caused great impacts to the environment.
From the end of the 18th century, the Revolution promoted intense transformations in the society and in the productive system, with the emergence of steam machines, industries, new work relationships, etc. Industrial expansion promoted an increase in greenhouse gas emissions greenhouse effect in the atmosphere and the consumption of fossil fuels, particularly the coal. Over time, industrial demand and the use of natural resources increased, impacting the environment with deforestation, soil erosion, extraction of raw material; and also brought consequences for the climate, such as floods, waves of heat and the increase in Earth's average temperatures (global warming) due to emission of greenhouse gases, for example. Between the end of the 19th century and the beginning of the 20th century, petroleum derivatives to be the main sources of energy, in addition to fuel for transport and industry in itself. However, with the oil crisis in the 1970s, interest in investments to enable the development of renewable energy and its application in commercial scale. In addition, the growing concern about environmental problems and climate - such as environmental degradation, food security, species extinction of animals, among others - also contributed to awakening a quest to mitigate these impacts. In this way, greater use of energy obtained from renewable sources becomes one of the alternatives for this purpose. Renewable energy sources are considered to be inexhaustible, as they are renewed constantly. Water, ocean, solar, wind, biomass and geothermal sources are 12 examples of his type of energy. Solar energy comes from the light and heat of the sun, used for both electricity generation and water heating. her use for electricity production has reached great rates, both in Brazil and abroad. world. As with all sources of energy generation, it is necessary to have a good project for the construction of centralized photovoltaics lar power plants.In this sense, this work aims to present the application of a methodology for sizing the electricity conductor cables of a Solar Power Plant Photovoltaic, installed underground in cable trenches, based on the cyclic generation pattern of energy for this type of enterprise. This methodology seeks to mitigate problems due to the thermal interaction of the conductors in the mentioned condition, and also to evaluate the possibility to reduce the sections of these in the desig process, compared to the results of sizing when the analysis of the energy generation cycle is not carried out, that is, by conventional method. As a result of this type of evaluation, a reduction in the overall cost of building a photovoltaic project, due to the reduction in width ditch to be excavated to accommodate the cables, and/or reduce the section, without losing technical support or violate any normative regulation.