Demand topics and bus definitions

[Jabert]

Hi all,

I've been lurking on here the last 6 months buying up all the used textbooks and sample exams I could afford. I am prepping for the October PE in power, and everything is coming along pretty well... Except for a few "fringe type" topics...

In the spin-up practice exams, there are several questions related to bus definitions (slack, load, generation, and swing). In all of my references, I can't seem to find a solid definition of all of them. Does anyone have a good resource that covers this?

Also - energy demand, demand factor, capacity factors seem to elude me as well. Any suggestions on what to bring to cover these topics as well?

 

[saberger_vt]

Any decent power system analysis book should have these definitions. I used "Power System Analysis" by Grainger. You can also look online for the information, for instance, any university/college with a power system class should have this information.

 

[Redskinsdb21]

Jabert..those are important topics and may be a few concenpt questions about either on the exam....I do have the grainger book mentioned above for sale for $50..cant remember how good it covers the subjects but I do know its one of the most popular books mentioned on this forum

 

[Jabert]

Thanks for responses... I have the grainger book but don't see any references... I did find in another book, handbook of electric power calculations by Beaty and an online reference.. Not a complicated subject apparently - in case someone else has trouble in the future:

Generator bus - naturally, connected to generators. Voltage and real power are known. Voltage is kept constant by varying exciting current in the generator

Load bus - load connected to this bus - real and reactive power is known, voltage varies.

Swing/slack bus - generator bus whose voltage serves as the reference for all other buses in the system (1 p.u.), real and reactive power is not controlled.

Online reference is http://www.ee.lamar.edu/gleb/power/Lecture%2011%20-%20Power-flow%20studies.ppt

 

[Redskinsdb21]

Also, I think they are some practice problems on this topic in the spin-up or CI exams that will help you some...and there is alsoa question or two related to it in NCEES exam