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The operation of circuit-breakers generates high frequency signals, therefore, a way to capture these signals is a radiometric system to evaluate the operation of the circuit-breaker, the greatest advantage of this method is that it\s possible the analyze the performance of the circuit-breaker without the need of any operational change to insert measuring devices. However, it was necessary to verify...
This paper presents a tool based on MATLAB™ program that has been devised to reproduce the observed and simulated transients of the high voltage (HV) power system network on the ATP program. The graphical interface can to help in the interpretation of high frequency travelling waves. Therefore, the analysis of these transients can be used to assist in the fault location in transmission lines. The...
Some researches have shown that arcing produces impulsive radio-frequency radiation and through timing analysis of the received and recorded impulses, the switching times of circuit breakers can be measured and utilized in order to ensure the safe operation and reliability of these equipments. In this context, this paper presents a performance evaluation of power circuit breakers (CBs) using an antennas-based...
For studies of insulation coordination at industrial frequency transmission line must be modelled with much more details than for other studies, like load flow and short circuit analyses. In other words, that usual representation of the transmission line by a single quadrupole Pi circuit is not applicable. In fact, all of the three-phase conductors must be analyzed separately though the determination...
This work presents an analysis of the performance of surge suppression devices that currently are applied in power distribution network. Based on the Transmission Lines Method - TLM, numerical models for these devices have been created and their computational implementation made by using MATLAB™ codes. These models were simulated with some types of power surges and a comparison of results is made...
This work presents an analysis of the overvoltage in the distribution network caused by lightning discharges. Numerical simulations using TLM- Transmission Line Modeling and ATP- Alternative Transients Program are presented to show and to establish comparisons between two models for the grounding resistance of the transformer and customer: the traditional model with constant resistance and considering...
This work presents an analysis of the overvoltage in the secondary network caused by lightning discharges that are transferred from the primary through the transformer. Numerical simulations using TLM- Transmission Line Modeling and ATP- Alternative Transients Program are presented to show and to establish comparisons between two models for the grounding resistance of the transformer and customer:...
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