ALMEIDA, A. C. A.; http://lattes.cnpq.br/2232702046879367; ALMEIDA, Augusto César Albuquerque de.
Résumé:
The present work is about a study of controlled switching in transmission lines through
three-pole switched circuit breakers applied in energization switching and lines reclosing. It will be
modeled a electrical system with two bars at ATP (Alternative Transients Program), to observer
the transient among the line due the switching. An algorithm is applied in the system to choose the
best moment to open or close the circuit breaker. This consists, basically, to determinate the instant
in when the voltages between the circuit breaker contact is zero and compare the values of
overvoltage when happens a unipolar switching that the instants in each phases as distintic and the
tripolar switching when the circuit breaker closes all the contacts simultaneously. It will be
analyzed the following conditions of operation: energization, simultaneous reclosing of phases and
independently without shunt compensation, with 30% and 80% shunt, considering the effects of
trapped charge.