A new approach to the localization of high impedance ground faults in compensated radial power distribution networks is presented. The total size of such networks is often very large and a major part of the monitoring of these is carried out manually. The increasing complexity of industrial processes and communication systems lead to demands for improved monitoring of power distribution network...

Abstract: This paper describes analysis, modeling and simulation of electrical transient fault-current detection in power systems. The proposed modeling is based on simple numerical integration only, which is able to efficiently handle some sophisticated calculation. The proposed fault detector methods are sliding root mean square (SRMS) and PQR transformation technique. In this paper, an abnor...

the dynamic behavior of three high manganese steels with very different stacking faultenergy (sfe) values (4-30 mj/m2) were studied using high strain rate torsional tests. the hotrolledmicrostructure of the steel with the lowest sfe of 4 mj/m2 consisted of a duplex mixture ofaustenite and ε-martensite, but those of the other two steels were fully austenitic. the deformedmicrostructures were stu...

This paper presents a study of the performance of distance protection relays when series compensation (SC) is inserted on double circuit transmission line high voltage (HV) 400 kV in Algeria (Group Sonelgaz). The relays setting for distance protection is considered as a great challenge to power system protection engineers. Special considerations on the transmission line impedance measurement ar...

In this paper we propose a sample selection procedure for improving accuracy of supervised classifiers in fault classification tasks. To generate faulty samples, a laboratory testbed is constructed and to avoid loss of a 3-phase AC induction motor (due to high short-circuit currents) resistors are used to limit current levels. This gives rise to short-circuit faults of different impedance level...

High impedance faults (HIF) on electric power distribution feeders are of a great concern to electric power utilities. These faults often occur when a bare conductor breaks and falls to ground through a high impedance current path [1]. Some HIFs draw sufficient current to be cleared by overcurrent protection, however, many HIFs draw only small amount of current, which makes them difficult to de...

In the non-effectively grounding distribution system, residual current under single-line-to-ground (SLG) fault threatens safety of human being and power supply equipment. Active arc suppression device has been proved to be effective for SLG when line impedance is ignored. However, in practice, varies with location load flowing through brings about additional voltage drop, which increases not de...