Thanks everyone for taking the time to give your thoughts. I've been through a few papers, but there doesn't appear to be any practical solutions other than those proposed, which makes it difficult for a DG in any scenario to move from peak lopping to export capability without passing through...
A client is operating a DG within an 11kV network on three feeders from a 33/11kV sub and is currently using Forward Under Power and Reverse Power protection to detect a Loss of Mains condition. This results in the embedded network always requiring a net import from the Grid, which wouldn't...
Sorry about the delay, I've just come back from holidays.
The DNSP was requesting a worst case allowance under IEEE80 or IEC61936 (which refers to 60479). Otherwise I would have used the generalised curves from ENA-EG0. This is now the 2nd time in a year that a DNSP has requested the standard...
Thanks anyway.
I put together a table yesterday which seems to be doing the job well enough. The local authority requires IEC 60479, so no substituting.
I'm doing a study of the EPR around some existing 330kV towers and am using various standards to determine the acceptable touch voltages. One of them is IEC/AS/NZ 60479.1 which shows a statistical set of regions for allowable body current vs duration of current flow in Figure 20. Rather than...
