Re: About three winding transformers and contingency analysis

2015-08-23 Thread Abhyankar, Shrirang G.
It would be hard to find which branches in the MATPOWER data constitute a 
three-winding transformer if you don’t have the original cases. I guess you’ll 
just have to choose sets of three branches and assume they constitute 
three-winding transformers.

Shri



From: Jesus Maria Lopez Lezama 
jesusmarialop...@yahoo.commailto:jesusmarialop...@yahoo.com
Reply-To: MATPOWER discussion forum 
matpowe...@list.cornell.edumailto:matpowe...@list.cornell.edu
Date: Saturday, August 22, 2015 at 4:47 PM
To: MATPOWER Discussion Forum 
matpowe...@list.cornell.edumailto:matpowe...@list.cornell.edu, MATPOWER 
Discussion List matpower-l@cornell.edumailto:matpower-l@cornell.edu
Subject: About three winding transformers and contingency analysis

Dear all

I want to run a contingency analysis (n-1) using Matpower 5.1
The code I have is automated to take out one branch at a time.
However, three winding transformers are modelled as three different branches. 
So, If I want to simulate the outage of such a transformer I must take three 
braches at a time.
The problem consists on identifying the three winding transformers.
How do I identify a three winding transformers within the mpc.branch matrix?
I tried to do it by checking different baseKV in mpc.bus; however all baseKV 
values are the same.

Has anyone had the same inquiry?
Can anyone give me some hints?

Best regards,
Jesús López



About three winding transformers and contingency analysis

2015-08-22 Thread Jesus Maria Lopez Lezama
Dear all
I want to run a contingency analysis (n-1) using Matpower 5.1The code I have is 
automated to take out one branch at a time.
However, three winding transformers are modelled as three different branches. 
So, If I want to simulate the outage of such a transformer I must take three 
braches at a time. The problem consists on identifying the three winding 
transformers. How do I identify a three winding transformers within the 
mpc.branch matrix? 
I tried to do it by checking different baseKV in mpc.bus; however all baseKV 
values are the same.
Has anyone had the same inquiry?
Can anyone give me some hints?
Best regards,Jesús López