No abstract

Abstract.Currently existing mobile substations in the market are characterized by a unique set involving protection, switches, transformer and others. This set has considerable weight and size, making it difficult to trafficability and mobility, due to limitations imposed by DNIT, besides the size and characteristics of the road network in the state of Mato Grosso. This article discusses a concept of fragmented mobile substation modules. This new proposal will provide a faster service by avoiding monetary penalties by indicators of continuity, and diversity into emergency care, as well as in meeting seasonal peak demands of certain regions of the Mato Grosso due to the characteristics of industries that comprise the agribusiness. This article addresses some additional advantages in the use of vegetable oils as compared to mineral oil. The use of vegetable oil as well as presenting technical advantages reduces possible harm to the environment during the displacement of the mobile substation.

Abstract.Currently existing mobile substations in the market are characterized by a unique set involving protection, switches, transformer and others. This set has considerable weight and size, making it difficult to trafficability and mobility, due to limitations imposed by DNIT, besides the size and characteristics of the road network in the state of Mato Grosso. This article discusses a concept of fragmented mobile substation modules. This new proposal will provide a faster service by avoiding monetary penalties by indicators of continuity, and diversity into emergency care, as well as in meeting seasonal peak demands of certain regions of the Mato Grosso due to the characteristics of industries that comprise the agribusiness. This article addresses some additional advantages in the use of vegetable oils as compared to mineral oil. The use of vegetable oil as well as presenting technical advantages reduces possible harm to the environment during the displacement of the mobile substation.

    The purpose of this paper is to analyze the exchange of incandescent light bulbs by fluorescent ones and old coolers by compact coolers class A Procel Stamped in ConsumerUnits with low income, who brings besides the increased energy efficiency, positive impact on consumers lives. However, when observing the effects of fluorescent lighting on electric power quality systems where they are applied, there is the appearance of unwanted harmonic distortion on the network. This paper examines the process of replacing the proposed system and verifies the impact on reducing energy consumption and power quality.

Abstract. The present article has as the aim to analyze the level of harmonic distortion of voltage in the bus in an electric system in the presence of evaporative refrigerators used for the cooling of environments operated by converters of frequency in which measurement campaigns were carried out in field. Considering that the frequency converters with the filters absence make the system presents nonlinear characteristics whose analyses are of great matter in what concerns about the quality of the electric energy and the fulfillment of the law and the existing rule, established by the national and international regulating agencies. In this context, through computational simulations, there was observed the efficiency of the passive filters tuned with objective to reduce the levels of harmonic distortions of voltage in the bus in study and to adapt these levels to the standards of reference contained in the existing resolutions.