Outputs (105)

Analytical solution of two-phase spherical Stefan problem by heat polynomials and integral error functions (2016)
Presentation / Conference Contribution

© 2016 Author(s). On the base of the Holm model, we represent two phase spherical Stefan problem and its analytical solution, which can serve as a mathematical model for diverse thermo-physical phenomena in electrical contacts. Suggested solution is... Read More about Analytical solution of two-phase spherical Stefan problem by heat polynomials and integral error functions.

Mathematical model of the arc erosion in bimetallic electrical contacts (2016)
Presentation / Conference Contribution

The mathematical model describing the nonstationary temperature field in a bimetallic contact consisting of a basic material and a covering is presented. It is based on the axially symmetric heat equation with the boundary conditions including an arc... Read More about Mathematical model of the arc erosion in bimetallic electrical contacts.

Is it possible to control an arc to glow transition for practical use in DC low voltage electrical installations? (2016)
Presentation / Conference Contribution

The paper presents and discusses investigated results of the study of arc to glow transformation at breaking of DC inductive load of a low power (less than 10J) and low voltage (about 250V).The ratio in duration of arcing and glowing is investigated... Read More about Is it possible to control an arc to glow transition for practical use in DC low voltage electrical installations?.

Time-based fault location method for LVdistributionsystems (2016)
Journal Article

© 2015, Springer-Verlag Berlin Heidelberg. Due to the utilization of fundamental frequency, current impedance-based fault location methods are able to locate only permanent and linear faults. The duration of the arc in low and medium voltage systems... Read More about Time-based fault location method for LVdistributionsystems.

Phase shift of the current under a single-phase short-circuit in the stator winding of a turbogenerator with double winding per phase (2015)
Journal Article

© 2015, Springer-Verlag Berlin Heidelberg. An equivalent model of a faulty turbogenerator under a single-phase short-circuit in the stator winding is presented. The model is based on modified voltage–current equations for the positive-sequence compon... Read More about Phase shift of the current under a single-phase short-circuit in the stator winding of a turbogenerator with double winding per phase.

Component model effect on fast-front overvoltages in gas insulated substations (2015)
Presentation / Conference Contribution

The proper modelling of transmission line towers and conductors plays an essential part in the travelling-wave analysis of fast front overvoltages due to lightning surges in overhead power lines connected to Gas Insulated Substations. This paper... Read More about Component model effect on fast-front overvoltages in gas insulated substations.

Restructuration of distribution power system using Genetics Algorithms (2015)
Presentation / Conference Contribution

This paper uses Genetic Algorithms (GAs) to solve the optimal reconfiguration in radial distribution systems for power loss reduction that determine the optimal switches. The GA is a relatively powerful intelligence evolution method for solving optim... Read More about Restructuration of distribution power system using Genetics Algorithms.

Investigation into transient SFO, FFO, VFTO overvoltage characteristics for typical gas insulated substations (2015)
Presentation / Conference Contribution

Overvoltage characteristics of typical single bus, double bus and one and a half bus GIS configurations under transient SFO, FFO and VFTO conditions are studied. The transient conditions are simulated through load rejections, lightning and the openi... Read More about Investigation into transient SFO, FFO, VFTO overvoltage characteristics for typical gas insulated substations.

Comparison of ATP simulation and micro‐processor based fault location using DFT (2015)
Journal Article

This paper evaluates the results of a microprocessor based fault locator employed on a laboratory power system model with those obtained within EMTP/ATP simulations. The Discrete Fourier Transform concept is used to extract the fundamental frequency... Read More about Comparison of ATP simulation and micro‐processor based fault location using DFT.

A fast fault classification technique for power systems (2014)
Journal Article

This paper proposes a fast fault classification technique using three phase current signals for power systems. Digital Fourier Transform, the ‘Least Square’ method or the Kalman Filtering technique are used to extract fundamental frequency components... Read More about A fast fault classification technique for power systems.