AIM: To find the response of the Transient Behaviour of Single machine connected with infinite bus...

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AIM: To find the response of the Transient Behaviour of Single machine connected with infinite bus and plot the Swing Curve. PROBLEM: A 20 MVA, 50Hz Generator delivers 18 MW over a double circuit line to an infinite bus. The Generator has kinetic energy of 2.52MJ/MVA at rated speed. The generator transient reactance is Xd'=0.35pu. Each transmission circuit has R=0 and a reactance of 0.2 pu on a 20MVA base. E'=1.1pu and infinite bus voltage V =1.0 <0°. A Three-phase short circuit occurs at the midpoint of one of the transmission lines. Plot Swing Curves with fault cleared by simultaneous opening of breakers at both ends of the line at 2.5 cycles and 6.25 cycles after the occurrence of fault. Also plot the swing curve over the period of 0.5s if the fault is sustained. AIM: To find the response of the Transient Behaviour of Single machine connected with infinite bus and plot the Swing Curve. PROBLEM: A 20 MVA, 50Hz Generator delivers 18 MW over a double circuit line to an infinite bus. The Generator has kinetic energy of 2.52MJ/MVA at rated speed. The generator transient reactance is Xd'=0.35pu. Each transmission circuit has R=0 and a reactance of 0.2 pu on a 20MVA base. E'=1.1pu and infinite bus voltage V =1.0 <0°. A Three-phase short circuit occurs at the midpoint of one of the transmission lines. Plot Swing Curves with fault cleared by simultaneous opening of breakers at both ends of the line at 2.5 cycles and 6.25 cycles after the occurrence of fault. Also plot the swing curve over the period of 0.5s if the fault is sustained.