Re: The Physics Behind the Spanish Blackout

Don Y <blockedofcourse@foo.invalid> wrote:

On 6/12/2025 1:08 AM, Liz Tuddenham wrote:

Waldek Hebisch <antispam@fricas.org> wrote:
 
 
[...]

Instantly dropping loads may be possible, but if it is the
only short term balancing mechanizm, then effect on loads may
be nasty.

 
That option will become less effective as a greater proportion of the
supply is generated by renewables.  Dropping the load may also drop a
significant proportion of the supply from local solar and wind sources.

 
That's specious reasoning.
 
I can contract with the utility to allow some of my BIG loads to be
dropped (on THEIR command) without disconnecting me (and my cogeneration
capabilities) from the network.

The key word here is "instantly".  To instantly drop thousands of
individual loads whilst maintaining their co-sited generation capacity,
in a completely reliable way, may be possible, but we are nowhere near
that at present.  Emergency load-shedding consists of switching of big
chunks of consumers but that is increasingly liable to switch off
generating capacity in an unpredictable way.

--
~ Liz Tuddenham ~
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