S. Arias-Guzman

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This paper presents the results of a power quality study carried out in an industrial distribution system. The main objective of this study was to quantify the negative impact caused by voltage sags in industrial processes and its relationship to generated interruptions. A series of measurements of power quality variations were taken at the substation that(More)
This paper introduces a new algorithm of polyphasic segmentation. This new algorithm combines the strength of the concept of voltage signal tensor with the benefits offered by the residual segmentation technique in order to generate a unique pattern of segmentation. This segmentation strategy is validated using a set of synthetic signals with voltage(More)
Voltage sags can be measured by the probability to generate an interruption of a process or equipment. Such quantification is known as severity. Recently, the new standard IEEE Std 1564-2014 Guide for Voltage Sag Indices determines the indicators for assessing the severity of voltage sags and the method of its calculation as well. In this paper, its(More)
Power quality management systems can provide information related with voltage sags as the duration, remnant voltage and affected phases associated with a point of measurement. Given a strong relation of these parameters with severity and energy indexes of voltage sags an improvement of the segmentation and characterization process is needed. For this reason(More)
Power system protection coordination plays the main role in the continuity of service in electrical systems. Incorrect settings may allow that repetitive failures occur before triggering an interruption. Consequently, it is necessary to identify the devices that clear a fault to assess its operation. The identification process can be achieved by a signature(More)
Power quality records provide information related to voltage and current waveforms and also deformation indicators, such as unbalance, and flicker. This disaggregation does not provide a global view of the degree of quality deterioration throughout the system. Valuations based on disaggregation of waveforms is inadequate in steel companies due to the fact(More)
This paper describes a new method used to analyze problems associated with power line faults. Overvoltage analysis techniques are evaluated. The complete system, including power cables and power ground is simulated in a workstation for transient practices with several laboratory practices using an experimental rele. A new method for power quality analysis,(More)
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