Re: Branch data ratio and taps

Well, that would only be true if it were a completely ideal transformer with no impedance. Even at the nominal tap ratio of 1.0 the voltages magnitudes will not be identical (as with a transmission line). Ray > On Oct 17, 2017, at 12:19 PM, Ahmad Sadiq Abubakar >

Re: Branch data ratio and taps

Dear Ray, Thanks for your response. In my case, V1 is a generator bus with 1.025 p.u. and V2 is a known PQ bus with 1 p.u. This implied Tap is 1.02? On Oct 17, 2017 4:27 PM, "Ray Zimmerman" wrote: > The tap ratio is the off-nominal tap ratio, relating per-unit voltages, > not

Re: Branch data ratio and taps

The tap ratio is the off-nominal tap ratio, relating per-unit voltages, not kV voltages. So if both voltages are at their nominal values (i.e. both at 1 p.u.) then the TAP should be 1 and SHIFT should be 0. Ray > On Oct 17, 2017, at 6:23 AM, Ahmad Sadiq Abubakar >

Branch data ratio and taps

Hi, all For a given case branch data r, x, b, assuming the branch is a transformer, between bus1 and bus2, with voltages V1 and V2 KV respectively. How do I obtain the Tap ration (column 9) and shift (column 10) of the branch matrix? I have simply used V1/V2 as the Tap ration while the shift is