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This is a very good response, I appreciate this!

Can someone explain with an example how REF is more sensitive than normal differential protection?

I am new to harmonics analysis and design and I am especially looking for simple examples in DigSilent, NEPLAN, Superharm or PTW, especially involving HVDC to AC system links. I am looking for already drawn prj, dz etc files I can load, run, modify and re-run. Please help? Also looking

Thanks all; I have now answered my own question with this Etap 7. On the Ratings pop up there is a table which needs to be filled "Generator Categories" into which you fill in the Design Megawatts, Normal Megawatts, Shutdown Megawatts, etc. Only can you successfully enter Operating values in...

I set up the Generator for Voltage Control, which means that I should be asked for the Power and Voltage as I would expect from a PV bus. But what ever power for P that I enter as an operating value is overridden by P=0 when I do the power flow. I go through the same process with NEPLAN and...

Yes, I have one G1 generator as slack and it is indeed supplying all the real power (plus losses) and some reactive power also. But what I really want to happen is for generator to produce the first 60 MW and the rest from the slack. Indeed Bus 2 has a load of over 200MW as well as some...

I am new to ETAP and trying to set up a small example network. It's really small with 3 buses,i.e. one each of slack, PV and Load. The problem I have is with the generator connected to the PV bus. I tried to set to at P=60MW and V=1 p.u. Now V is correct, but P from the generator is always...

Would like to be sure about doing a CT Saturation Test. I am a ware that the best would be to apply a variable voltage at the secondary X1 and X2. But tel me, must H1 and H2 be left open or must shorted (this looks unlikely for testing large CTs inserted in transformer bushings or swtchgear...

I need to advise a manufacturer of composite insulators on the loading diagrams of braced / non braced insulators for use in high voltage application. Specifically I would like some opinion advice about whether one or how one can produce generic loading diagrams (based on horizontal, vertical...

Ron, I can be more specific about the standard: IEC 61952 Kwaedza

Ron, I wish to apply NGK-Locke Polymer Line Post Insulators or similar and verify the load charts with theory. Thank you. Kwaedza

Can any one lead me to the best resources for loads on overhead line insulator assemblies, in particular the modeling of braced post insulators. I understand finite elements may be necessary but I would want to know the underlining theory and also hopefully be advised on a freely available or...