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(Solved): Can I have this redone but in a cleaner and understanding way? In the system shown below, a solid ...
Can I have this redone but in a cleaner and understanding way?
In the system shown below, a solid single line-ground fault occurs on bus 3 . Both generators are solidly grounded (namely, neutral point grounded). All reactance values shown are in per unit. What is the abc fault current in line 2-3? The prefault voltages are 1.0 per unit. (Hint: there are different ways to calculate diagonal elements of matrix: inversing Y matrix or using Thevenin Equivalent method.)
Expert Answer
Answer: To calculate the fault current in line we need to first calculate the Zbus matrix of the system. We can do this by using the Thevenin equivalent method. Thevenin Equivalent at bus 3: The Thevenin equivalent impedance seen from bus 3 will be the sum of impedances connected to bus 3, i.e.,