Title :
Analysis of breaking capability within asymmetrical short circuits
Author :
Vajnar, Vladimir ; Vostracky, Zdenek ; Sedlacek, Jan
Author_Institution :
Fac. of Electr. Eng., Univ. of West Bohemia, Pilsen, Czech Republic
Abstract :
This paper discusses the occurrence of asymmetrical currents and difficulties within their breaking due to the reduced breaking capability in limitary areas of breaker´s characteristics. It´s aimed at breaking of generator short-circuits with specific course. Transient and subsequent stress are defined by electrical, magnetic and mechanical conditions inside the generator and breaking capacity is affected by the random mechanical state of the circuit breaker.
Keywords :
circuit breakers; short-circuit currents; asymmetrical generator short-circuit breaking capability analysis; circuit breaker random mechanical state; transient stress; Circuit breakers; Circuit faults; Fault currents; Generators; Impedance; Short-circuit currents; Transient analysis; asymmetrical current; breaking capability; circuit breaker; short-circuits;
Conference_Titel :
Electric Power Engineering (EPE), 2015 16th International Scientific Conference on
Conference_Location :
Kouty nad Desnou
DOI :
10.1109/EPE.2015.7161101
