During the operation of the electrical power system (SEP), there are often protection failures that can result in shutdowns in the power supply, causing a reduction in quality of service. This is not common, but it happens ...

The present study was developed to show how SEL-387 relay works during testing procedures. The reason of the development of this work emerged because of the importance and complexity of the protection of electrical systems. ...

While actual models explaining electron conduction in electricity producing biofilms have evolved separately to apparent irreconcilable conceptual positions, finding cytochrome complexes in the external matrix of Geobacter ...

This research intends to show the Schweitzer Engineering Laboratories SEL-421 relay distance and overcurrent protections settings. The use of microprocessortype relays have advantages when compared with electromechanical ...

This paper presents a new algorithm, derived from the recursive least squares (RLS), to estimate power system voltage and current harmonics for digital relay purposes. The algorithm is based on the RLS covariance matrix ...

Impulse Response Coefficients (IRC) of digital filters is an imperative step in the development of transmission line protection relay algorithms. Traditionally, Fourier-based filters are used in real applications, where ...