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Ray is spot on again, the generators beyond the towers North of Adelaide just happened to be wind powered. They could just as well have been gas, coal,
thermal, solar, or any other type you can dream up; they would still have
ceased contributing power to the grid when the towers failed.
As I stated earlier, large wind turbines have a lot of rotating mass [1000s of kg], and when operating with numerous others in the same circuit, are capable of absorbing considerable transient loads. The ideal, but expensive solution is to have the distribution system below ground, although even then you are still left with occasional generator failures, and the larger the failed generator, the harder it becomes for the remainder of the system to cope
with the failure. If the base load station went off line, then obviously the rest of the system would fail.
raymo
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