BALBINO, L. S.; http://lattes.cnpq.br/7793114447926907; BALBINO, Luan da Silva.
Resumo:
The predominance of monopolar fault occurrences in transmission lines highlights that
the utilization of methods that can identify the fault nature, mitigate the problem as fast
as possible and cause less impact in the power system are necessary. To fulfill such
premises, the Adaptative Single-Pole Auto Reclosing maneuver is an alternative to
tripolar and monopolar protection with fixed dead time. This work initially presents a
brief discussion about the existing solutions to the exposed problem and a comparative
discussion of obtained results for different Adaptative Single-pole Auto Reclosing
methods. This study proves to be important because it allows ascertaining different
techniques that are addressed to enable systems protection. For this purpose, the chosen
base methods, necessary alterations and used procedures are made explicit. The adopted
methodology includes the implementation of Windowed Discrete Fourier Transform
based routines to harmonic evaluation, filters, sampling rate variation and phasor
estimation algorithms applied in transmission line signals with reactive compensation.
After the exposure and discussion of the obtained results, comparison parameters
between methods are defined, demonstrating which one was most successful in the
tested applications. To evaluate the methods, real signals from monophasic faults
occurrences in transmission lines were used.