‘N-MNYS_5_WG_CLOSE’ constraint set invoked, because of unplanned outage of Yass – Marulan 5 330kV line
At 16:16 (NEM time) on Wednesday 10th December 2025 there was an unplanned outage of Yass - Marulan 5 330kV line.
‘N-MNYS_5_WG_CLOSE’ constraint set
A collation of articles about the ‘N-MNYS_5_WG_CLOSE’ constraint set, which is an outage-related constraint set in place because there is an ‘outage of the Marulan – Yass (5) 330kV line [with Wagga-Yass 132kV parallel lines CLOSED]’
Amongst the (many) constraint equations that are members of this set is the the ‘N::N_CTMN_2’ constraint equation
Early afternoon volatility in NSW, on Wednesday 15th January 2025 … Part 1 in a multi-part exploration
Not long after speaking with a client about forecast evening volatility in NSW for Wednesday 15th January 2025, we see price spikes beginning at 14:00 in the afternoon. So we take a first look....
Initial Review of price volatility in NSW in early afternoon Friday 6th December 2024
For several reasons, we've reviewed some afternoon volatility in NSW on Friday 6th December 2024.
Here’s a few things to watch, w.r.t. the forecast tight supply-demand balance in NSW (and QLD) for early next week
In this article on Wednesday evening 20th November 2024 we suggest a couple factors to keep an eye on, leading into the expected tight supply-demand balance (and possible load shedding) in NSW on Tuesday...
Evening volatility in QLD and NSW on Monday 18th November 2024
A short record of some evening volatility in QLD and NSW on Monday evening 18th November 2024 ... with the ‘N-MNYS_5_WG_CLOSE’ constraint set a familiar factor.
Burst of volatility in QLD and NSW, on Friday evening 15th November 2024
A very quick record of evening volatility in QLD and NSW on Friday 15th November 2024.
Reviewing the ‘N-MNYS_5_WG_CLOSE’ Constraint Set, as a major factor in recent northern volatility
As time permits, we're chipping away at an exploration of the volatility in QLD and NSW on Thursday 7th November 2024. In this article we take another step in understanding the ‘N-MNYS_5_WG_CLOSE ’ constraint...
A much shorter run of evening volatility in QLD and NSW on Friday 8th November 2024
There were not as many SMS pings on Friday 8th November 2024 as there were for price alerts the day before, with the only 4 dispatch intervals in QLD and NSW above $1,000/MWh.
Three dispatch intervals (sampled from a long run of volatility on Thursday 7th November 2024) to illustrate the complexity (and significance) of congestion
We’ve selected three dispatch intervals through the long run of volatility in the QLD and NSW regions on Thursday 7th November 2024 to help illustrate: 1) How the issue of ‘congestion’ or ‘constraints’ in...