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Prof. Abdel-Salam Hafez Abdel-Salam Hamza :: Publications:

Title:
A NEW TECHNIQUE FOR TRANSIENT RECOVERY VOLTAGE SUPPRESSION ON GENERATOR CIRCUIT BREAKER FOR GENERATOR FED FAULTS
Authors: Abdelsalam H. HAMZA Tamer ELYAN M. A. ABD-ALLA Ebrahim A. BADRAN
Year: 2013
Keywords: Not Available
Journal: Not Available
Volume: Not Available
Issue: Not Available
Pages: Not Available
Publisher: Not Available
Local/International: International
Paper Link: Not Available
Full paper Abdel-Salam Hafez Abdel-Salam Hamza_A New Technique For Transient Recovery Voltage Suppression on Generator Circuit Breaker For Generator Fed Faults-1.pdf
Supplementary materials Not Available
Abstract:

In this paper, the generator circuit breaker (GenCB) is simulated using ATP- EMTP software package. Four main stages of the breaker’s operating processes are considered, namely; the closed contacts stage, the arc burning stage, the arc extinguishing stage and the opened contacts stage. Therefore, not only the dynamic conductance during current zero are considered but also the effects of arc voltage on the arcing times are included. The simulation is tested in a representative network and the results are compared with IEEE Generator Circuit Breaker standards. A new mitigation technique is introduced to reduce the transient recovery voltage and the rate of rise of re-striking voltage during switching period. The results show that the new technique reduces both the TRV and RRRV effectively with respect to previous ones.

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