Help - 130kV OHL Disturbance
Help - 130kV OHL Disturbance
(OP)
Hi,
I received from a colleague the attached disturbance " 130kV OHL short circuit".
My question is :
Why during the short circuit the phase A and B and C currents are in phase ?!?!
Any idea ???
Thank you for your support.
Marco
I received from a colleague the attached disturbance " 130kV OHL short circuit".
My question is :
Why during the short circuit the phase A and B and C currents are in phase ?!?!
Any idea ???
Thank you for your support.
Marco






RE: Help - 130kV OHL Disturbance
RE: Help - 130kV OHL Disturbance
I'd need to take a close look at how the CTs are connected to understand whether this is an actual reading or some artifact of the wiring scheme.
RE: Help - 130kV OHL Disturbance
Could youy please send us Comtrade file, intresting see vektor diagrams before--after fault.
Best Regards.
Slava
RE: Help - 130kV OHL Disturbance
RE: Help - 130kV OHL Disturbance
If this was the only source to a Ø-grd fault, there would be current only in the faulted phase. If it was measuring the current coming from a grounding transformer, it would show all zero-sequence current and all phases would be in phase and equal.
You can get some screwy looking currents in each source when you have multiple sources feeding a fault.
RE: Help - 130kV OHL Disturbance