Hello,
Only to clarify one of my previous posts:
Tutorial on Harmonics Modeling and Simulation
IEEE Power Enginering Society Task force on Harmonics Modeling
Document 98TP125-0
This is a document prepared by IEEE and it is a "collage" of papers, they have modelling, test systems and so on...
Hello,
The model and degree of detaill will mainly depend on your need. I mean, if you are interested in seeing what happens with the loads then you need a detailled model of them, otherwise, you may represent some equivalent.
In order to simplify, loads may be represented with current sources...
Hello,
I know that there is a very close relation between X/R ratio and copper losses.
In some cases, it is easier to obtain the X/R ratio for transformers than copper losses.
In IEEE red book there is a graphic to obtain X/R ratio (approximated!) for transformers with different ranges.
Regards
Hello,
I recommended you two things:
a) Contact the software developer, they are usually very nice people, who know very well their product and when you buy a software some technical support is always included.
b) Another option is to contact a person who uses the software, his data are:
Dr...
Hello,
I think the topic you have talked is very interesting and sometimes not very clear.
My question is:
Do you know if there is any standar from ANSI/NEMA/UL concerning to busbars in any voltage rating?
I guess there should be something such as with the circuit breakers. . .
Regards
Hello,
We have previously studied some special conditions like synchronising as well as load transfering with a software called DIGSILENT.
It allows you to do a detailled modelling of all involved equipments and step by step determine the main variables (frecuency, voltage, and so on)
Regards
Hello,
I recommend you to visit their web site and maybe send an emal to the moderators, they may tell you the status of your solicitude.
Anyway, it usually takes two o three weeks for somebody out of the US (like my case!)
Regards
Hello,
At the company we always use DIgSILENT PowerFactory.
It has a very detailled modelling of every element of the power system.
In the case of the transformers, it considers the parameters you mentioned.
You may take a look: www.digsilent.de
Regards
Hello,
What you should do now, is to determine the impedance of all elements involved in your "network" taking into account the reactance values that you already got, as well as X/R ratios.
One very important point is the methodology that you may follow, I mean, if your approach will be ANSI...
Hello,
I think that the most recommended is to take into account the "real" values (name plate data) of each one individually.
Only in this way you will get a more accurate representation in digital simulations like shortcircuit and load flow, otherwise, the results may be very different from...
