What to expect (in ez2view) when bi-directional units emerge

We’re counting down the days till we see the first bi-directional units (BDUs) in operation in the NEM.

1)  Rather than being new facilities, the first ones will be re-registrations of the 26 already existing (fully scheduled) batteries into the BDU category.

2)  Following an update from the AEMO last week, we posted ‘When will we start seeing BDUs in dispatch?’, including useful timetable highlighting a 21-day cut-over period for each battery.

3)  Readers should understand  that this cut-over period will not be aligned across all the batteries … indeed, it might take some months for them all to transition

4)  Our current understanding is that the first BDU DUIDs might start being visible in early July 2024.

 

Which version of ez2view are you running?

What you can expect to see depends a great deal on which version* of ez2view you are running.

* as you know, you can find the version number in the top-right of each ez2view window.

 

Scenario  1)  If you are running a version before the v9.9.3.351 ‘Transition Release’…

… then you will likely experience issues with a significant number of widgets … and we’d strongly recommend you upgrade as soon as possible.

We’ll not be supporting these older versions when these issues emerge.

 

Scenario  2)  You have upgraded for IESS if …

There’s actually two sub-scenarios here…

2a)  If you are running the v9.9.3.351 ‘Transition Release’

On Monday 27th May 2024 we wrote about the ‘ez2view ‘Transition Release’ in preparation for IESS’.

Are you keeping an eye on this site, and did you see this Release Note?

2b)  If you are running the v9.9.4.* (beyond the ‘Transition Release’)

At the same time, we also wrote about ‘Known Limitations with the ‘Transition Release’ of ez2view on 27th May 2024’.

Since that time, we’ve been working our way through this list (following our iterative development process) and have already ticked some off that list.

(a)  Some further enhancements are highlighted in ‘Enhancements already made (to 16th June 2024), beyond the Transition Release of ez2view’.

 

Temporary double-counting of Maximum Capacity …

In this list of Known Issues, we included a row in the table for ‘Temporary double-counting of Maximum Capacity for existing batteries’.

Now that we’ve seen the AEMO’s proposed 21-day cut-over period for the existing batteries, our sense is that we’ll all be seeing the following in this process:

1) Bids and Availability and other parameters that are inputs to the NEMDE process will transition smoothly:

(a)  One dispatch interval (on Day 0) there will be non-blank data for the 2 x DUIDs (and the data for the BDU will be blank)
(b)  The next DI (on Day 0) there will be non-blank numbers for the DUID for the BDU (and data for the 2 older DUIDs will be blank)

2) Outputs (i.e. Metered Discharge/Charge and Targets) will also transition smoothly:

(a)  One dispatch interval (on Day 0) there will be non-blank data for the 2 x DUIDs (and the data for the BDU will be blank)
(b) The next DI (on Day 0) there will be non-blank numbers for the DUID for the BDU (and data for the 2 older DUIDs will be blank)

3) However our suspicion, based on the AEMO diagram, is that there will be an overlap of 21 days for ‘Maximum Capacity’ and ‘Registered Capacity’ for these units … in other words, for that 21 day period there will be non-blank numbers in all.

What (3) means in ez2view is that any widget summing capacity for a station will unavoidably ending up double counting for that transition period.

1)   In the immediate term we realized that there’s nothing we can do ahead of time to cater for this, as the transition dates (and plans) are not set in stone:

(a)  other than alert you in this way

(b)  specific widgets to flag that will be affected include:

i.  (Region) schematics … because battery Max and Min capacity sizes the spark line

ii.  the ‘Station Dashboard’ widget

iii.  the ‘Bids & Offers’ widget, where you have not filtered down to an individual unit

2)  After all the units have transitioned:

(a)  we will have a think about what we might be able to do to rectify, to assist in longer term trending and analysis.

(b)  but no promises there, until we see the scope of what AEMO’s actually done!

 

Remember, we’re switching older versions off (from Monday 29th July 2024)

In this Release Note, we noted that we’d be switching off older versions of this software as soon as Monday 29th July 2024.

That’s only ~6 weeks away now … so here’s a more direct reminder that we’re ‘Switching off older versions of ez2view (pre v9.9.3.351) from Monday 29th July 2024’.