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In a grid system experiencing load growth, what happens to the short-circuit MVA (SC MVA) at a particular bus if: No new transmission capacity is added A previously offline generator is brought online to meet the increased demand How does bringing this additional generator online impact the SC...

Hello Team Glad for all your advice and help thus far. However; I need help to plot a chart in excel; I have honestly tried all I know and asked around the few experts. I would like to plot the Cartesian chart in attached exactly as it is for the power factor. As you can see; its origin is "1"...

HELLO EVERYONE Thanks in advance once again. I propose a ZNyn11 Auxiliary grounding transformer for a 33kV GIS Switching station. However looking through the threads on here; I do not know the rating of the upstream transformer. I was thinking of proposing a 100kVA because the LVAC load is...

Hello colleagues and Senior Engineers. Thanks very much for your help and insights. I am on a journey to Renewable energy and power system studies; so kindly bear with me. 1. When sizing transformers for a solar pv plant; should you consider sizing the step up transformers with the Grid MVAr +...

@Parchie, Thanks for shedding some light on the 5% figure and its interpretation. It's helpful to understand the statistical approach behind it. I think this approach is should not be used because it doesn't have any no support by any standard document. However; in real life a figure above 5%...

I recently came across; a GRID interconnection study that some engineers from out ETC Transmission utility did for a client. However; they quoted a formula from the book: "Jeurgen Schlabbach and Karl-Heinz Rafalki Power System Engineering" and indicated that; the PV penetration level is...

In modelling techniques for power system analysis. Considering the ONAN and ONAF ratings for a transformer; which rating should be considered as the Base MVA for p.u unitization?