Market Notices

AEMO ELECTRICITY MARKET NOTICE

Inter-regional transfer limit variation -Glenn Innes to Tenterfield 96R 132kV line - NSW region - 08/12/2024

At 0333 hrs 08/12/2024 there was an unplanned outage of Glenn Innes to Tenterfield 96R 132kV line.

The following constraint set(s) invoked at 0345 hrs 08/12/2024
N-96L_96R_CB4102

This constraint set(s) contains equations with the following interconnectors on the LHS.
N-Q-MNSP1,NSW1-QLD1

Refer to the AEMO Network Outage Scheduler for further information.

Manager NEM Real Time 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 VIC region on 08/12/2024.

Minimum System Load (MSL) conditions are forecast when regional demand is less than the relevant MSL threshold. The advisory MSL thresholds are:
o MSL1 - 1590 MW
o MSL2 - 1090 MW
o MSL3 - 590 MW

The regional demand is forecast to be below the MSL1 threshold for the following period:

1. From 1200 hrs 08/12/2024 to 1330 hrs 08/12/2024. Minimum regional demand is forecast to be 1496 MW at 1300 hrs.

Forecast regional demand (DEMAND50) is published in Short Term and Pre-Dispatch PASA region solution reports available on Market Data NEMWEB: https://aemo.com.au/en/energy-systems/electricity/national-electricity-market-nem/data-nem/market-data-nemweb .

AEMO Operations

AEMO ELECTRICITY MARKET NOTICE

Refer to market notice 106175

AEMO and Powerlink are continuing to investigate system strength requirements in North Queensland.
Due to commissioning of Clarke Creek wind farm in Far North Queensland, the system normal equations have been revised.



A revision to the constraint equations will be implemented at 1100 hrs on Monday 9th December 2024.

The new combinations have now published in a limits advice document on AEMO's website. For more information refer to the new limits advice: https://www.aemo.com.au/energy-systems/electricity/national-electricity-market-nem/system-operations/congestion-information-resource/limits-advice

This advice contains all the combinations for Queensland for system normal cases. Additional information has been included in the limit advice to clarify the requirement to disconnect all inverters/turbines under certain system conditions.

The constraint equation in the Q-NIL set of the form below will be modified:

-Q_NIL_STRGTH_KBWF
-Q_NIL_STRGTH_MEWF

Two new equations have been added:

-Q_NIL_STRGTH_CKWF
-Q_NIL_STRGTH_CKWF_I

AEMO Operations

AEMO ELECTRICITY MARKET NOTICE

Cancellation Inter-Regional Transfer limit variation - Murraylink control unavailable (VIC Region)

Refer AEMO Electricity Market Notice 121376

AEMO has been notified that the controls to vary Murraylink output are now available.

Constraint set I-CTRL_ISSUE_ML revoked at 1420 hrs.

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Inter-Regional Transfer limit variation - Murraylink control unavailable (VIC Region)

AEMO has been notified that the controls to vary Murraylink output are unavailable until further notice.

Constraint set I-CTRL_ISSUE_ML invoked from 1350 hrs.

The constraint set contains equations with the following interconnector on the LHS:

V-S-MNSP1


Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Inter-regional transfer limit variation - Red Cliffs - Wemen 220 kV line - VIC region - 30/11/2024

A planned outage of Red Cliffs - Wemen 220 kV line in the VIC region was scheduled from 0400 hrs 30/11/2024 to 1430 hrs 30/11/2024.

The outage has been completed and Red Cliffs - Wemen 220 kV line returned to service at 1120 hrs 30/11/2024

Constraint set(s) revoked: V-KG_WE_RC

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Refer AEMO Electricity Market Notice 121142

Constraint set I-QN_1000 was invoked from 0955 hrs until 1230 hrs 28/11/2024.

This constraint set contains equations with the following interconnector on the LHS;

NSW1-QLD1

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

In order to maintain the power system in a secure operating state in the NSW region, AEMO has invoked the following constraint set I-QN_1000 from 0955 hrs until further notice.

This constraint set contains equations with the following interconnector on the LHS;

NSW1-QLD1

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Inter-Regional Transfer limit variation - Murraylink

There has been an unplanned outage of Murraylink.

The following constraint set was invoked at 1405 hrs 25/11/2024

I-ML_ZERO

The constraint set contains the following interconnector on the left hand side.

V-S-MNSP1

Refer to AEMO Network Outage Scheduler (NOS) for further details.

Manager NEM Real Time Operations