Market Notices

AEMO ELECTRICITY MARKET NOTICE.

Update - Lightning vulnerable lines in Vic region

Refer to AEMO Electricity Market Notice 119029

At 1525 hrs on 18/10/2024 the Rowville - Yallourn No. 7 220 kV Line and the Rowville - Yallourn No. 8 220 kV Line tripped and auto-reclosed.
The cause of the trip was identified as due to Lightning.

In accordance with SO_OP_3715, AEMO now considers the Rowville - Yallourn No. 7 220 kV Line and the Rowville - Yallourn No. 8 220 kV Line to be vulnerable with a category of probable due to Lightning.

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Update - Pre dispatch demand forecast - Qld region

Refer market notice: 119666

The issue relating to the Queensland Pre dispatch demand forecast has been resolved.

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Pre dispatch demand forecast - Qld region

AEMO is aware of an error in the Queensland pre dispatch demand forecast.
AEMO is currently working to resolve the issue.
Dispatch results are not impacted.


Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Update to Market Notice 119571 - AEMO has detected that there is an elevated risk of insufficient demand to maintain a secure operating state in the Victorian region on 02/11/2024.

Minimum regional demand is forecast to be 1457 MW at 1230 hrs, and the advisory threshold is:
MSL1 - 1695 MW
MSL2 - 1195 MW
MSL3 - 695 MW


The regional demand is forecast to be below the MSL1 threshold for the following period:
From 1130 hrs to 1400 hrs 02/11/2024.

AEMO Operations

AEMO ELECTRICITY MARKET NOTICE

Cancellation of reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible. There is no longer any lightning activity in the vicinity of the following lines. Accordingly its classification has reverted to a non-credible contingency event.

Region: NSW1

Lines: Armidale - Dumaresq 8C 330kV and Armidale - Sapphire WF 8E 330kV

Cancellation time: 28/10/2024 15:39

Constraint set(s) revoked:
N-ARDM_ARSR_1PH_N-2 Constraint set contains the following interconnector(s) on the left hand side:
N-Q-MNSP1
NSW1-QLD1


Refer AEMO Electricity Market Notice 119561

Auto-generated on behalf of Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Cancellation - MSL1- VIC Region at 1400 hrs 28/10/2024.

Refer to Market Notice 119497 for Forecast MSL1.


AEMO Operations

AEMO ELECTRICITY MARKET NOTICE

AEMO has detected that there is an elevated risk of insufficient demand to maintain a secure operating state in the Victorian region on 02/11/2024.

Minimum regional demand is forecast to be 1491 MW at 1230 hrs, and the advisory threshold is:
MSL1 = 1695 MW
MSL2 = 1195 MW
MSL3 = 695 MW

The regional demand is forecast to be below the MSL1 threshold for the following period:
From 1100 hrs to 1330 hrs 02/11/2024.

AEMO Operations

AEMO ELECTRICITY MARKET NOTICE

Reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits to now be more likely and reasonably possible. Accordingly AEMO has reclassified it as a credible contingency event.

Region: NSW1

Lines: Armidale - Dumaresq 8C 330kV and Armidale - Sapphire WF 8E 330kV

Duration: 28/10/2024 11:33 until further notice

Constraint set(s) invoked:
N-ARDM_ARSR_1PH_N-2 Constraint set contains the following interconnector(s) on the left hand side:
N-Q-MNSP1
NSW1-QLD1


Auto-generated on behalf of Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Cancellation - MSL1- VIC Region at 1315 hrs 26/10/2024.

Refer to Market Notice 119423 for MSL1.

Manager NEM Real Time Operations