MVA Method

[Ship Wreck PE]

I was having trouble with NCEES sample problems 513, 530, and 540 until I realized that they could be solved easily with the MVA method.

 

[Redskinsdb21]

yeah...whatever method you use...make sure you understand it b/c fault analysis is an important topic for the exam

 

[user 26087]

I'm getting 2343MVA on 540. I'm not sure what I'm doing wrong or if that is what you've got when doing the MVA method.

 

[knight1fox3]

Have a look at this thread for some additional discussion on NCEES 540: http://engineerboards.com/index.php?showtopic=17353

 

[user 26087]

Haha!!! It's been a long month already. I wrote the T1 MVA as 993 instead of 933. That's where my math went wrong. Ok so I studied the MVA method tonight and went through and got all three problems correct. So excited!!!

 

[Blink]

Care to explain how you did each one with the MVA method?

 

[knight1fox3]

Care to explain how you did each one with the MVA method?

Did you look at my link above? Good explanation and a PDF that provides instruction. :thumbs:

 

[kris7o2]

Does anyone know how to use the MVA method for this problem? I tried the link above and it no longer works, and I have also been searching the forum. Thanks

 

[DLD PE]

Does anyone know how to use the MVA method for this problem? I tried the link above and it no longer works, and I have also been searching the forum. Thanks

https://engineerboards.com/threads/ncees-power-practice-exam-540.34966/

 

[no_concentrate]

Fault MVA on Gen. (Sg) = 834/23% = 3626.08MVA

Fault MVA on Trsf. (St) = 933/15% = 6220MVA

Total Fault MVA (Sf) = (3626.08*6220)/(3626.08+6220) = 2290MVA

As above said fault MVA of Gen will travel to 230Kv line through Transformer so we have to calculate overall Fault MVA.

I hope this will help and Please feel to correct me if I am wrong.