Market Notices

AEMO ELECTRICITY MARKET NOTICE

Actual Lack Of Reserve Level 1 (LOR1) in the NSW region - 26/09/2024

An Actual LOR1 condition has been declared under clause 4.8.4(b) of the National Electricity Rules for the NSW region from 1630 hrs.
The Actual LOR1 condition is forecast to exist until 1930 hrs

The capacity reserve requirement is 1440 MW
The minimum capacity reserve available is 1027 MW

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Cancellation of Actual (LOR1) condition in the SA region - 24/09/2024

The Actual LOR1 Condition in the SA Region advised in AEMO Electricity Market Notice No.118433 is cancelled at 0120 hrs 25/09/2024.

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Actual Lack Of Reserve Level 1 (LOR1) in the SA region - 24/09/2024

An Actual LOR1 condition has been declared under clause 4.8.4(b) of the National Electricity Rules for the SA region from 2300 hrs.
The Actual LOR1 condition is forecast to exist until 0200 hrs

The capacity reserve requirement is 600 MW
The minimum capacity reserve available is 520 MW

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Network Augmentation Commissioned - NSW Region - 24/09/2024

At 1535 hrs Buronga - Redcliffs X1 220 kV line has been commissioned.


Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE.

Update - Lightning vulnerable lines in TAS region

Refer to AEMO Electricity Market Notice 118320 ,118321, 118322

At 1340 hrs 19/09/2024 the Gordon - Chapel St No 1 220 kV line and the Gordon - Chapel St No 2 220 kV line tripped.
The cause of the trip was identified as due to Lightning.

In accordance with SO_OP_3715, AEMO now considers the Gordon - Chapel St No 1 220 kV line and the Gordon - Chapel St No 2 220 kV line to be vulnerable with a category of Vulnerability due to Lightning.

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Refer to market notice 92840.

Transgrid has advised AEMO of an update to the transient voltage stability limit in south-west NSW for loss of Darlington Point to Wagga (63) 330 kV line. The limit will include terms for the Darlington Point and Riverina BESS.

The following constraint equation will be updated with the above changes at 1100 hrs Friday 20th September 2024.
N::N_NIL_63

For full details on the formulation, the new constraint equation has now been loaded into AEMO's pre-production systems.

For further details on these constraint equation please contact ben.blake@aemo.com.au

Ben Blake
AEMO Operations

AEMO ELECTRICITY MARKET NOTICE.

Update - Non-credible contingency event - TAS region - 19/09/2024

Refer AEMO Electricity Market Notice 118321

At 1446 hrs the Gordon - Chapel St No 1 and No 2 220 kV lines were returned to service.

This non-credible contingency event was caused by lightning. 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.


Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE.

Update - Non-credible contingency event - TAS region - 19/09/2024

At 1340 hrs the Gordon - Chapel St No1 and No 2 220 kV lines tripped.

AEMO did not instruct load shedding.

AEMO has advised of approximately 112 MW disconnection of bulk electrical load,
disconnection of generation at Studland Bay Wind generator (71 MW) and 23 MW generation reduction at Gordon Power station.

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

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE.

Non-credible contingency event - TAS region - 19/09/2024

At 1340 hrs the Gordon - Chapel St No1 and No 2 220 kV lines tripped.

AEMO did not instruct load shedding.

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