On 25th November, guest author Allan O’Neil examined the ‘X5 Constraint’. Two weeks of operation have passed, so now Allan reviews some of what’s happened.
Given the great interest in the new ‘X5 constraint’, guest author, Allan O’Neil, has invested some time to pick the new constraint equation to understand (and then explain) what it is, how likely it will be to bind, and who is likely to be affected.
From tomorrow (Fri 20th Nov) market participants in south-western NSW and north-western VIC will need to grapple with yet another transmission constraint seeking to ‘constraint down’ their output when it’s sunny and/or windy. This one is named ‘N^^N_NIL_3’.
Third day in a row, and at exactly the same time as yesterday (Mon 17th Nov) the dispatch price in QLD spiked through the roof. Here’s a quick first look…
This is the 11th Case Study in a series (looking at extreme outcomes of Aggregate Raw Off-Target for Semi-Sched units). We’ve rolled into 2018, now and (coincidence?) this one is much more complex than the first 10 from the earlier years …
Another islanding event separated the SA region from the rest of the NEM yesterday (Monday, 2nd of March). Allan O’Neil investigates what happened before the event and possible causes.
Guest author, Allan O’Neil, takes a look, via the GSD2019 (released today), at the four different headwinds facing solar farm developers and operators operating in the NEM.
The framework we used to analyse the extent to which coal-fired power is “dependable” in the Generator Report Card, and the extent to which it’s been changing.
Data compilation of the Generator Report Card is underway, given we’ve stepped over into 2019. Here’s a summary insight about the nature of coverage of bound constraint equations across all units in the NEM.
A quick look at AEMO’s current forecasts for Friday (prompted by a few conversations externally)…
AEMO has adjusted the formula (i.e. constraint equations) used to manage system strength in South Australia, which has been (since mid-2017) by constraining down the output of wind farms under certain conditions.
It was inevitable that Semi-Scheduled plant would start to experience times when they are dispatched down. It’s a big prompt to take next steps up the learning curve.
An article that sums up some decidedly un-quick calculations we’ve performed – looking over an 8 week period to 13th September to estimate how much wind power has been curtailed by the AEMO.
A quick note about high wind speeds in South Australia this afternoon leading to AEMO constraining wind farm output down for System Strength reasons.
Beginning prior to 7am and progressing through the morning of Wednesday 2nd January 2013, there was significant volatility in the Queensland region of the National Electricity Market – including four spikes at or above $1,000/MWh.
Here’s a walk-through of how it unfolded, with some pointers to some of the contributing factors.
A snapshot of an instance of the Queensland regional constraint, which has returned after an absence over the autumn months.