Tomorrow’s brief network outage (on the Rowville – South Morang 500 kV line) *might* have high impact

In recent times a number of ez2view users (and readers here) have followed up with questions about ‘how did you do [something mentioned in an article]’.

… we’re happy to answer questions, as they arrive

For a couple reasons, then, worth highlighting that the AEMO has published Market Notice 117066 as follows:


From :              AEMO
To   :              NEMITWEB1
Creation Date :     19/06/2024     12:14:34


Notice ID               :         117066
Notice Type ID          :         GENERAL NOTICE
Notice Type Description :         Subjects not covered in specific notices
Issue Date              :         19/06/2024
External Reference      :         Planned outage of the Rowville – South Morang 500 kV line in the VIC region on 20/06/2024.


Reason :


The Rowville – South Morang 500 kV line in the Victoria (VIC) region is planned to be out of service from 1400 hrs to 1630 hrs on 20/06/2024.

A credible contingency event during this planned outage could cause:
– A large reduction in generation in VIC; and/ or
– Restrict power transfer across the VIC – South Australia (SA) interconnector (Heywood interconnector).

Refer AEMO Network Outage Schedule (NOS) for further details.

AEMO Operations



These types of notices are not that frequent, so worth a brief exploration.  Utilising the ‘Constraint Sets’ widget in ez2view , and filtering down to just constraint sets related to either Rowville or South Morang, we see the following:


It’s the ‘V-ROSM’ constraint set that the AEMO is specifically speaking about in their notice … but note that there are several other constraint sets that mention either Rowville or South Morang as well (but not ‘Rowville – South Morang 500 kV line’).

That constraint set currently* contains 4 different constraint equations, as shown.

* noting that constraint sets can, and occasionally do, change in form.


We’ll watch with interest to see if anything happens…

About the Author

Paul McArdle
One of three founders of Global-Roam back in 2000, Paul has been CEO of the company since that time. As an author on WattClarity, Paul's focus has been to help make the electricity market more understandable.

Be the first to comment on "Tomorrow’s brief network outage (on the Rowville – South Morang 500 kV line) *might* have high impact"

Leave a comment

Your email address will not be published.