Sumários
Nonsymmetric faults by symmetrical components
11 novembro 2014, 09:30 • Luis Marcelino Ferreira
Review of single phase fault analysis
Computation of system currents and system voltages
Maximum value for single-phase short circuit as compared to three phase’s
Voltage values for non faulted phases
Class 5A
11 novembro 2014, 08:00 • Luis Marcelino Ferreira
Various power flow problems:
Two-bus system and sensitive loads
Jacobi-Gauss formulas for the two-bus system
Newton’s formula using rectangular coordinates
Newton’s formula using polar coordinates for a two-bus system with voltages known (in magnitude)
Single phase fault by symmetrical components
6 novembro 2014, 11:00 • Luis Marcelino Ferreira
Review of concepts of balanced and symmetrical systems. Unsymmetrical and unbalanced systems.
Single phase faults by using symmetrical components
Derivation of short-circuit current
Diagram coupling the three systems in series