2) A 3-bus power system is shown below. The three busses are connected through three 340 kV transmission lines of 200km, 150 km, and 150 km long. These transmission lines have the series resistance of 0.05 Ω/km and series reactance of 0.3Ω/km.(a) Find the value of the transmission lines series impedances.(b) Find the bus admittance matrix (Y-bus) of this power system. P) A 3-bus power system is shown below. The three busses are connected through three 340 kVtransmission lines of 200km, 150 km, and 150 km long. These transmission lines have the seriesresistance of 0.05 0/km and series reactance of 0.30/km.(a) Find the value of the transmission lines series impedances.(b) Find the bus admittance matrix (Y-bus) of this power system200kmG2G1150km150kmLoad #3Load # 13G3Load #2

In a three-phase power system network, active power and reactive power flows through different…

2) A 3-bus power system is shown below. The three busses are connected through three 340 kV transmission lines of 200km, 150 km, and 150 km long. These transmission lines have the series resistance of 0.05 Ω/km and series reactance of 0.3Ω/km. (a) Find the value of the transmission lines series impedances. (b) Find the bus admittance matrix (Y-bus) of this power system.

2) A 3-bus power system is shown below. The three busses are connected through three 340 kV transmission lines of 200km, 150 km, and 150 km long. These transmission lines have the series resistance of 0.05 Ω/km and series reactance of 0.3Ω/km. (a) Find the value of the transmission lines series impedances. (b) Find the bus admittance matrix (Y-bus) of this power system.

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter7: Symmetrical Faults

Section: Chapter Questions

Problem 7.21P

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Figure below shows a power system where load at bus 5 is fed by generators at bus 1 and bus 4. The generators are rated at 100MVA; 11 KV with subtransient reactance of 25%. The transformers are rated each at 100 MVA, 11/112 KV and have a leakage reactance of 8%. The lines have an inductance of 1 mH/phase/km. Line L1 is 100 km long while lines L2 and L3 are each of 50 km in length. 1- For a 3-phase fault at bus 5, the fault current is equal to 2530A. What the value of the change in the fault current if the value of the base voltage is changed to 10 kV (i.e. new value/old value). 2- For a 3-phase fault at bus 5, the fault current is equal to 2530A. What the value of the change in the fault current if the length of L1 is reduced to 50 km (i.e. new value/old value).