Ask Your Question

How to ramp the value of exciter output voltage in dynamic simulation?

asked 2018-10-20 17:47:47 -0600

Jota_1892 gravatar image

Hi, I'm new with PSSE. I am simulating the dynamic response of a synchronous machine (SMIB system) in PSSE.

I would like to know if it is possible to change the value of the exciter output voltage (Efd) according to a ramp with a defined slope (or alternatively with a defined duration) in a dynamic simulation? Sort of a "manual control" of the value of Efd.

Also, could you recommend a web page to start to learn to work with Python in PSSE. I am using the GUI to run the simulation.

edit retag flag offensive close merge delete

2 answers

Sort by ยป oldest newest most voted

answered 2018-10-21 15:34:21 -0600

perolofl gravatar image

PSSE does not have any facility to ramp EFD. However it can be done with some code in the CONEC file or with a user-written model.

edit flag offensive delete link more


thanks for the answer. How can I defined a user-written model for the exciter?

Jota_1892 gravatar imageJota_1892 ( 2018-10-21 19:08:06 -0600 )edit

Read Chapter Model Writing in Program Operation Manual!

perolofl gravatar imageperolofl ( 2018-10-21 23:49:44 -0600 )edit

User exciter models are pretty straightforward to write, in this case will just have to manipulate your efd in mode 3 as per your needs

txc gravatar imagetxc ( 2019-03-05 21:41:50 -0600 )edit

answered 2019-03-05 04:12:25 -0600

jfconroy gravatar image

You can also implement the ramp in Python code, running one simulation step at a time in a while loop, changing the value of the ramp signal as you iterate. Not the most elegant solution, but effective nonetheless.

edit flag offensive delete link more


How can we change the EFD in Python?

perolofl gravatar imageperolofl ( 2019-03-05 04:55:09 -0600 )edit

I was thinking about a ramp to the voltage setpoint. A ramp to the EFD would require a user model (either CONEC, CCT (v33+) or Exciter model).

jfconroy gravatar imagejfconroy ( 2019-03-05 05:46:01 -0600 )edit

Your Answer

Please start posting anonymously - your entry will be published after you log in or create a new account.

Add Answer

[hide preview]

Question Tools

1 follower


Asked: 2018-10-20 17:47:47 -0600

Seen: 711 times

Last updated: Mar 05 '19