Friday, 7 October 2016

South Australian Blackout. What does the future hold for South Australia.

Terence Cardwell

Image: GWPF
South Australian Blackout.  What does the future hold for South Australia.
It has become clear now that the failure of the South Australian Grid system was caused by the erratic behaviour, and then the sudden auto-shutdown, of the wind generators.  This substantially increased the load on the Victoria-to-South Australia interconnector, which exceeded the maximum allowable load and tripped the overload system.

The badly-built towers that fell over would have been isolated in just one-tenth of a second by the system protection mechanism, and if the grid system had sufficient stable base-load power you would have seen just a ‘bump’ on the system voltage and frequency graphs, but this would have been nothing that it couldn’t handle under normal circumstances.

The New South Wales system could lose 2 x 660 MW units and still recover stability after the spinning reserve and the unit’s load maximum rate pickups came into action, all within a matter of seconds.  But South Australia was a very under-protected and unstable grid system, with many little gas-fire powered stations trying to hang on to an insane setup.

There is no doubt it will happen again and again; this was not a once off.

It seems that the ‘Greens’ who brought this about are very slow to learn anything intelligent, and this