Load Flow in per unit: Putting Matter to rest
Load Flow in per unit: Putting Matter to rest
(OP)
I just thought of a new on Per Unit Power System Analysis thread to finalise a previous discussion hoping also that other academics can benefit from my experience.
I have just finished doing the simulation of a system example by Stagg & Ei-Abiad,shown in his "Computer Methods in Power Systems", page 284. The example is the most comprensive taking 30 pages of the book. The results correspond almost 100% especially for real power flows (reactive power flows, (0 to 5% difference). The per unit values were derived from a 100MVA base (voltage not given) (I am using a 1kV, 1MVA base and don't need to convert anything).
I am quite happy with the experiment and results and I can proceed now to develop my class tasks with confidence.
mmt
I have just finished doing the simulation of a system example by Stagg & Ei-Abiad,shown in his "Computer Methods in Power Systems", page 284. The example is the most comprensive taking 30 pages of the book. The results correspond almost 100% especially for real power flows (reactive power flows, (0 to 5% difference). The per unit values were derived from a 100MVA base (voltage not given) (I am using a 1kV, 1MVA base and don't need to convert anything).
I am quite happy with the experiment and results and I can proceed now to develop my class tasks with confidence.
mmt






RE: Load Flow in per unit: Putting Matter to rest
RE: Load Flow in per unit: Putting Matter to rest
mmt
RE: Load Flow in per unit: Putting Matter to rest
RE: Load Flow in per unit: Putting Matter to rest
Not to mention impractical
RE: Load Flow in per unit: Putting Matter to rest
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RE: Load Flow in per unit: Putting Matter to rest
Now coming to my point that there are no transformers in my per unit networks. This so happened to be so in the examples I worked on. We can include transformers with fixed ratios (a line with zero susceptance for practical purposes). Once the students understand the basics, we can proceed to the less "dull" aspects using all kinds of software.
RE: Load Flow in per unit: Putting Matter to rest
When i had my power system course, my instructor uses an existing complex power grid diagram for fault calcultation using per unit method - it's challenging - while simulating it using software. The result is pretty similar. But the basic example without using transformer was never dealt.
RE: Load Flow in per unit: Putting Matter to rest