Market Notices

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

Cancellation of Actual (LOR2) condition in the NSW region - 27/11/2024

The Actual LOR2 Condition in the NSW Region advised in AEMO Electricity Market Notice No.121101 is cancelled at 1645 hrs 27/11/2024.

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Actual Lack Of Reserve Level 2 (LOR2) in the NSW region - 27/11/2024

An Actual LOR2 condition has been declared under clause 4.8.4(b) of the National Electricity Rules for the NSW region from 1530 hrs.

The Actual LOR2 condition is forecast to exist until 1700 hrs.
The capacity reserve required is 685 MW
The minimum reserve available is 412 MW

AEMO is seeking an immediate market response.

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE.

Non-credible contingency event - NSW region - 26/11/2024

At 1637 hrs Uranquinty Unit 12 tripped and at 1639 hrs Uranquinty Units 11 and 13 tripped.

AEMO has not been advised of any disconnection of bulk electrical load.

The cause of this non credible contingency event is not known at this stage.

Manager NEM Real Time Operations