PSS/E Modelling

[powertrainee]

Hey everyone - came across this forum and am hoping to get involved. I am a recent graduate from Engineering Physics and I have landed a job in a local utility. I'll be the first to admit, I probably don't have the "power" experience that an EE would - eager to learn though!

In preparation, I am trying to up my experience in PSS/E. I have downloaded the University version (which is free up to 50 buses). I can't seem to find much of anything online in terms of tutorials, so I thought I would ask here. Is there a way to include and model specific relay characteristics in PSS/E? For the life of me, I can't figure out how to add, let along model, a relay. Also, would adding relays necessitate the addition of CTs/PTs?

Thanks! (sorry if my questions are basic)
Matt

 

[jghrist]

PSS/E does power flow, fault analysis, and dynamic analysis but doesn't do relay coordination.

Before spending too much time learning PSS/E, find out what software your utility uses. Your new employer may be willing to pay for some training on their software.

 

[powertrainee]

Thanks.

They do use PSS/E and training is provided, however, I don't start till May of next year. As such, I have a bit of time. I figure I might as well learn as much as I can now.

I was told this: PSS/E models the characteristics of distance relays in terms of "straight-line blinders" and "circles" particularly for transient simulations.

Can someone shed light on this? I understand the concept of transient simulations, but what what straight line blinders and circles, and where/how does PSS/E model this?

Thanks again

 

[electricpete]

I think that refers to relay characteristics the Z plane (X R plane).

I am in no means presuming to judge your starting level of knowledge, but I would think an important focus should be learning relaying and power system fundamentals (especially if you haven't had many courses in those) before diving into software.

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(2B)+(2B)' ?

 

[dpc]

Check some references for transmission line relaying. These are characteristics of various distance relays and their settings.

If you're going to be doing this for a living, buy a copy of "Protective Relaying" by J. Lewis Blackburn. Also see:

faq238-1287

David Castor

http://www.cvoes.com

 

[electricpete]

Again I didn't mean to judge. I guess it is not mutually exclusive to learn from software and textbooks so you should feel free to ask questions about either one here.

There is a good list of references here:
faq238-1287

Many of them are free on-line. That includes GE's Art and Science of Protective Relaying (with a chapter on distance relays), also some good free references from Areva T&D and others.

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(2B)+(2B)' ?