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19:27
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Originally posted by Inductor
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The main objection I have to those sorts of pieces of masterly reporting is that it hides from the truth of transmission of power, and the realities of supplying a complex grid. It's a popular theme (amongst both journos and academics) to bash baseload power as a myth … but it is far from correct.was making disappears.
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The current federal government and Murdoch press are quick to blame the SA "big blackout" on renewable energy. This is not correct. If you read the final AEMO report on the blackout , it concludes that the cause was the cascading result of:
Tornadoes destroying 2 separate high voltage transmission lines, resulting in grid instability which resulted in:
Wind generators prematurely disconnection from the grid due to over-conservative settings, which in turn resulted in:
Overload and subsequent tripping of the interconnectors with Victoria
The report concluded that if the wind generators had not been set to disconnect, the statewide blackout would likely not have happened.
The following factors must be addressed to increase the prospects of forming a stable SA island and avoiding a Black System:
Sufficient inertia to slow down the rate of change of frequency and enable automatic load shedding to stabilise the island system in the first few seconds. This will require increases in SA inertia under some conditions, as well as improvements to load shedding systems combined with reduced interconnector flows under certain conditions.
Sufficient frequency control services to stabilise frequency of the SA island system over the longer term. This will require increases in local frequency control services under some conditions.
Sufficient system strength to control over voltages, ensure correct operation of grid protection systems, and ensure correct operation of inverter-connected facilities such as wind farms. This will require increases in local system strength under some conditions
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One major improvement since then has been the installation of the Tesla "Big Battery", which may well have avoided problems during an islanding of the SA grid earlier this year following lightning strikes affecting the NSW-QLD interconnector:https://reneweconomy.com.au/on-firs...nce-between-big-battery-and-big-banana-84075/
(20min delay)
