L-L-G Model Inside PSSE

asked 2018-03-28 19:45:54 -0500

haveityourwa
15 ●14 ●15 ●19

Hey guys, I am trying to simulate a L-L-G fault inside both PSSE and PSCAD however the information that I have found inside PSSE documents does not seem to achieve the same result inside PSSE. Inside the POM on page 685 (V32) or 9-14 for page numbers. This indicates that the unbalanced fault appears like so.

i.imgur.com/py2znVO.png

However when making a fault using the command below.

psspy.distscmufault([0, 1, 2, fault_bus], [23/(66^2/100), 0, 0, 0])

My understanding is that this would indicate a fault like below.

i.imgur.com/3Hjsm58.png

Please let me know if this is an incorrect assumption.

edit retag flag offensive close merge delete

add a comment

1 answer

Sort by » oldest newest most voted

answered 2018-04-04 10:43:30 -0500

perolofl

2947 ●1 ●8 ●16

updated 2018-04-04 13:19:34 -0500

Are you referring to this figure?

image description

I believe you have 46 ohm fault impedance between the phases and 0 ohm to ground at the mid-point.

edit flag offensive delete link

Comments

Thanks for the reply that is the image i am referring to and my assumption was the same that the fault impedance between the phases would be 46 ohms, however when trying to simulate the same fault inside PSCAD as above the resulting voltage drop was not equal.

haveityourwa ( 2018-04-04 19:40:51 -0500 )edit

add a comment

Question Tools

1 follower

Stats

Asked: 2018-03-28 19:45:54 -0500

Seen: 362 times

Last updated: Apr 04 '18

L-L-G Model Inside PSSE

1 answer

Comments

Your Answer

Question Tools

Stats

Related questions