Hi,
I'm not too familiar with HVDC cable operating characteristic so any help would be appreciated. I was asked recently to determine the extreme minimum short-circuit required for the operations of the future installed HVDC line. From what I have been reading the last 2 days is that this...
A field person asked me this question and I couldn't find the document to justify, so we need your help. Given a 3-phase transmission line with length (L)and all three phases are shorted, what is the 3-phase voltage need to apply in the other end to achieve an "X" Amp Line-Ground Current for...
Hi,
I'm trying to determine the appropriate way to represent 3-winding Delta transformer to its equivalent Wye representation. The given data were: Primary : Secondary voltages, its MVA rating, MW loss, and %Z. I saw an old note in the past which indicates the calculated resistance as %R =...
Hi,
I'm trying to solve a loadflow case in PSSE and kept getting the problem of PARS operate outside its constrained boundaries. Need some help with under what condition does a phase angle regulator would fail to operate, and how may I be able to mitigate?
Hi all,
Any advices in solving blown up case in PSSE? I have been burdened with a very difficult studied case and can't get it solve. Any strategy would be appreciated. Thanks.
Is there an equation which would explain the reactive power absorption of a series reactor with impedance X. Assume that the series reactor between point 1 and point 2. Thanks for any help.
Is there an equation for reactive power flow? (I know for real power movement the equation is EVsin(E-V)/X, But couldn't find anything for reactive movement)
Thanks Dandel, davidbeach, and others who gave me very beneficial suggestions. I have recently worked on a problem of fault current contribution from the surrounding elements on a high voltage bus 138 kV. What I noticed is that when i changed one set of generation and transformer using...
I'm currently investigate the effect of transformer in-rush current at a distribution level. Need to know what instigate this behavior and its effect on the system. If you know any source/websites for which I could study about this phenomenon, it would be very helpful. Thanks, and have a...
Hi, I'm very new at this and need your advises. I was recently asked to determine the fault current contribution of a group of generators locates at a bus within our system. This group of generators was represented as a single equivalent source in Aspen software and connected to a 345 kV...
