There are several widgets in the ez2view software that can help users analyse and interpret constraint data … including (but not limited to) these two:
1 The ‘Constraint Sets’ widget …
(a) Which is more focused directly on Constraint Sets
(b) Remember that Constraint Sets are ‘invoked’ … and contain one or many Constraint Equations .
2 Specifically with respect to Constraint Equations:
(a) About many Constraints:
… other widgets
(b) About a single Constraint Equation:
i. The ‘Constraint Dashboard’ widget … with articles utilising this widget (hopefully, if we remember) tagged here.
A short article to look at the first instance of the new ‘V_NWVIC_GFT1_750’ constraint equation binding - on Wednesday evening 10th September 2025 (not 36 hours after it had first been introduced).
A curious phenomenon we've been watching with interest today has been the somewhat persistent and alarmingly high predispatch price forecasts for NSW.
In Part 4 of this Case Study (with respect to spot price volatility in South Australia on Monday 23rd September 2024) we take a detailed look at the 'S_PPT+SNPT+BLVR_220' Constraint Equation, which was particularly...
A case study, drawing heavily on various widgets in ez2view, looking at some large (and unexpected) oscillations in output at Darlington Point Solar Farm through a ~2 hour period on Thursday 29th August 2024.
On Sunday 1st Sept 2024, aggregate curtailment of Solar Resource from (Semi-Scheduled) Large Solar across the NEM reached 79.2% ... in this follow-on article we explore the question 'WHICH Solar Farms were curtailed ......
A question from a WattClarity reader this morning prompts this quick-and-cryptic review of NSW price volatility at 18:10 on Monday 20th May 2024, and particular output profile of Queanbeyan BESS
The ‘N::N_CTYS_2’ constraint equation (invoked due to a network outage on the Collector to Yass (3L) line) was one of the constraint equations material in volatile price outcomes in NSW on Tue 7th May...
An initial look at the 'out of the blue' price spike in QLD at 14:30 on Thursday 21st December 2023.
Some quick notes about volatility in SA on Friday evening 11th August 2023.
In Part 2 of this Case Study, we look at those 15 x Semi-Scheduled units highlighted with large deviations (mostly under-performance) at 17:05 on 27th October 2022 in order to understand more.
An article on RenewEconomy this week (about some analysis by analysts at ANU) coincided with our review of sequential drafts of the GSD2022, and prompted this article to have a look at some reported...
First day back in the NEM after a break and I see the that the ‘N-RVYS_2’ Constraint Set is contributing to morning price volatility in the NSW region again.
A detailed look at the ‘N::N_UTRV_2’ constraint equation (focusing specifically on the spike at 17:30 on Friday 28th October 2022), drawing heavily on the newly-released 'Constraint Dashboard' widget in ez2view.
Following a client request on Friday 4th November, here's a quick look at the low wind conditions occurring on that day.
A quick look at a brief price spike in NSW and QLD on Friday evening 28th October - which appears to be related to a Ravine -Yass(2) 330kV line outage.
On Friday 14th October we saw a significant system event in Tasmania - with storms downing power links, leading to large (530MW) loss of load and trip of Basslink. In this article we take...
A quick look at this morning's volatility in South Australia.
A quick look at a price spike at 06:45 on Monday morning 6th June ... that has some parallels to yesterday evening.
A short walk through Sunday evening's 'out of the blue' price spike in the South Australian region.
Marcelle explores the little-understood concept in NEM dispatch of the tie-break principle, using the new 'Constraint Dashboard' widget in ez2view.