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Abstract: This paper analyses and explains from the systems point of view,microprocessor based protective relay MBPR systems with emphasis ondifferential equation algorithms. Presently, the application of protectiverelaying in power systems, using MBPR systems, based on the differentialequation algorithm is valued more than the protection relaying based on anyother type of algorithm, because of advantages in accuracy and implementation.MBPR differential equation approach can tolerate some errors caused by powersystem abnormality such as DC offset. This paper shows that the algorithm is asystem description based and it is immune from distortions such as DC-offset.Differential equation algorithms implemented in MBPR are widely used in theprotection of transmission and distribution lines, transformers, buses, motors,etc. The parameters from the system, utilized in these algorithms, are obtainedfrom the power system current it or voltage vt, which are abnormal valuesunder fault or distortion situations. So, an error study for the algorithm isconsidered necessary.



Autor: Bruno Osorno

Fuente: https://arxiv.org/







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