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Double Line to Ground Fault

Double Line to Ground Fault (LLG): Figure 11.9 shows a Double Line to Ground Fault at F in a power system. The fault may in general have an impedance Zf…

Line to Line Fault

Line to Line Fault (LL): Figure 11.7 shows a Line to Line Fault at F in a power system on phases b and c through a fault impedance Zf. The phases…

Symmetrical Component Analysis of Unsymmetrical Faults

Symmetrical Component Analysis of Unsymmetrical Faults: Symmetrical Component Analysis of Unsymmetrical Faults - Consider a general power network shown in Fig. 11.1. It is assumed that a shunt type fault…

Sequence Impedances of Transmission Lines

Sequence Impedances of Transmission Lines: Sequence Impedances of Transmission Lines - Figure 10.9 shows the circuit of a fully transposed line carrying unbalanced currents. The return path for In is…

ZBUS Formulation

ZBUS Formulation: ZBUS Formulation is given by By Inventing YBUS The sparsity of YBUS may be retained by using an efficient inversion technique and nodal impedance matrix can then be…

Algorithm for Short Circuit Computation

Algorithm for Short Circuit Computation: So far we have carried out short circuit calculations for simple systems whose passive networks can be easily reduced. In this section we extend our…

Short Circuit Current Computation through Thevenin Theorem

Short Circuit Current Computation through Thevenin Theorem: An alternate method of computing Short Circuit Current Computation is through the application of the Thevenin theorem. This Short Circuit Current Computation method…

Short Circuit Current of Loaded Synchronous Machine

Short Circuit Current of Loaded Synchronous Machine: In the previous article on the Short Circuit of a Synchronous Machine, it was assumed that the machine was operating at no load…