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Example for Equal-Area Criterion Calculate the critical clearing time and clearing angle for the system shown...
A 50 Hz, 250 MVA synchronous generator having inertia constant H=5 MJ/MVA is connected to an infinite bus through trans...
A 50 Hz, 250 MVA synchronous generator having inertia constant H=5 MJ/MVA is connected to an infinite bus through transformer and transmission line as shown below. The transformer reactance is based on 500 MVA, while the other impedances are based on the generator MVA Infinite bus 1 2 3 XL 0.1 pu - oto G1 V= 1.0 pu X 0.1 pu Xd = 0.3 pu at 500 MVA The generator is delivering 0.8 of full load current at a power...
The generator has an internal voltage of 1.5 pu and an inertia constant (H) of 3 MJ/MVA. Determine whether the generator is transiently stable or not if the fault clearing time is 0.15 seconds.
A generator, with a transient reactance of j0.5 pu, delivers 1.0 pu real power to an infinite bus through a transformer and two transmission lines in parallel as shown below. A solid three phase fault occurs at position near “F” which is cleared by opening both ends of the transmission leaving only one line in service.
The generator has an internal voltage of 1.5 pu and an inertia constant (H) of 3 MJ/MVA. Determine whether the generator is transiently stable...
a) Calculate the generator internal voltage E’ and the initial generator power angle δ prior to...
a) Calculate the generator internal voltage E’ and the initial
generator power angle δ prior to the fault.
b) Write the swing equation for the machine. What will be the
generator angle δ' at the instant when the fault is cleared after
0.1 s?
c)Determine whether the synchronous generator will remain stable
after the fault is cleared.
d) If the fault clearing is delayed, determine the critical
clearing angle and critical clearing time.
= A 50 Hz synchronous generator with...
A remote generator transmits energy to a major load/generation via a system shown in the drawing....
A remote generator transmits energy to a major load/generation via a system shown in the drawing. Assume the generators voltage behind transient reactance to be 1.1pu, the infinite bus voltage to be 1.0 pu and the power transfer to be 0.3 pu during the steady state condition of the network. The line reactance is j0. 5 pu per line and the transient reactance of the generator isj0. 2 pu. The normalised constant of the generator H- 3KWS7KVA A 3 phase...
A 50 Hz, 250 MVA synchronous generator having inertia constant H=5 MJ/MVA is connected to an infinite bus through transformer and transmission line as shown below. The transformer reactance is based on 500 MVA, while the other impedances are based on the generator MVA Infinite bus 1 2 3 XL 0.1 pu - oto G1 V= 1.0 pu X 0.1 pu Xd = 0.3 pu at 500 MVA The generator is delivering 0.8 of full load current at a power...
a) Calculate the generator internal voltage E’ and the initial
generator power angle δ prior to the fault.
b) Write the swing equation for the machine. What will be the
generator angle δ' at the instant when the fault is cleared after
0.1 s?
c)Determine whether the synchronous generator will remain stable
after the fault is cleared.
d) If the fault clearing is delayed, determine the critical
clearing angle and critical clearing time.
= A 50 Hz synchronous generator with...
A remote generator transmits energy to a major load/generation via a system shown in the drawing. Assume the generators voltage behind transient reactance to be 1.1pu, the infinite bus voltage to be 1.0 pu and the power transfer to be 0.3 pu during the steady state condition of the network. The line reactance is j0. 5 pu per line and the transient reactance of the generator isj0. 2 pu. The normalised constant of the generator H- 3KWS7KVA A 3 phase...
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