Market Notices

AEMO ELECTRICITY MARKET NOTICE

AEMO's weather service provider has issued forecast temperatures equal to or greater than the NEM Local Temperature Alert Levels for listed weather stations below.

SA
Port Augusta Ap (39+ Deg C): 17th Oct

The NEM Local Temperature Alert Levels are:

Launceston Ti Tree Bend: 33 Deg C, Dalby Airport: 37 Deg C, for all other selected weather stations: 39 Deg C.

AEMO requests Market Participants to:

1. review the weather forecast in the local area where their generating units / MNSP converter stations are located and,

2. if required, update the available capacity in their dispatch offers or availability submissions consistent with the forecast temperatures.

Further information is available at:

https://aemo.com.au/energy-systems/electricity/national-electricity-market-nem/nem-forecasting-and-planning/forecasting-and-reliability/projected-assessment-of-system-adequacy/nem-local-temperature-alerts

AEMO Operations Planning

AEMO ELECTRICITY MARKET NOTICE

There is an opportunity for testing Heywood Interconnector (HIC) flow from South Australia to Victoria above 450MW and Victoria to South Australia above 450MW on 11th October from 8:00hrs to 19:00hrs

This test includes a trip and reclose of a line in South Australia.

Please also refer to the published formal PEC Stage 1 and HIC capacity release testing information at the following link https://aemo.com.au/-/media/files/stakeholder_consultation/consultations/nem-consultations/2023/project-energyconnect-stage-1-and-hic-capacity-release/pec-stage-1-and-hic---final-test-program.pdf?la=en.

Ben Blake
AEMO Operations

AEMO ELECTRICITY MARKET NOTICE

Inter-regional transfer limit variation - Moorabool to Sydenham 500 kV No.2 line - VIC region - 09/10/2024

A planned outage of Moorabool to Sydenham 500 kV No.2 line in the VIC region was scheduled from 0600 hrs 01/10/2024 to 2030 hrs 11/10/2024.

The outage has been completed and Moorabool to Sydenham 500 kV No.2 line returned to service at 1940 hrs 09/10/2024

Constraint set(s) revoked: V-MLSY_NOEMTT_R

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

From 9th Oct 2024 AEMO will change constraints used during outages that create a credible risk of SA islanding.

From this date AEMO will:

1) Increase the maximum allowable flow on the V-SA interconnector from 50 MW to 250 MW in the VIC to SA direction, where the transmission outages is a planned outage.

2) Operate the SA region to the default 49-51 Hz target frequency containment band following a contingency event resulting in actual SA islanding. In order to meet this requirement, AEMO may now procure Contingency Raise FCAS locally from the SA region during these outages.

These changes reflect updated advice received by AEMO from the SA Jurisdictional System Security Coordinator.

The first network outage affected by this change is planned for 14th October 2024.

Andrew Groom
AEMO Operations

AEMO ELECTRICITY MARKET NOTICE

Inter-regional transfer limit variation - Bannaby -Sydney West 39 330 kV line- NSW region - 03/10/2024

A planned outage of Bannaby -Sydney West 39 330 kV line in the NSW region was scheduled from 0700 hrs 16/09/2024 to 1600 hrs 11/10/2024.

The outage has been completed and Bannaby -Sydney West 39 330 kV line returned to service at 0920 hrs 03/10/2024

Constraint set revoked: N-BYSW_39_15M

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

There is an opportunity for testing Heywood Interconnector (HIC) flow from South Australia to Victoria above 450MW and Victoria to South Australia above 450MW on 30th September from 9:00hrs to 17:00hrs

This test includes a trip and reclose of a line in South Australia.

Please also refer to the published formal PEC Stage 1 and HIC capacity release testing information at the following link https://aemo.com.au/-/media/files/stakeholder_consultation/consultations/nem-consultations/2023/project-energyconnect-stage-1-and-hic-capacity-release/pec-stage-1-and-hic---final-test-program.pdf?la=en.

Ben Blake
AEMO Operations

AEMO ELECTRICITY MARKET NOTICE

Inter-regional transfer limit variation - Stockdill - Upper Tumut 1 330 kV line - NSW region - 29/09/2024

At 0313 hrs 29/09/2024 there was an unplanned outage of Stockdill - Upper Tumut 1 330 kV line.

The following constraint set invoked at 0320 hrs 29/09/2024
N-SDUT_1

This constraint set contains equations with the following interconnectors on the LHS.
V-S-MNSP1
VIC1-NSW1

Refer to the AEMO Network Outage Scheduler for further information.

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

A network augmentation has been commissioned in the NSW region at 2150 hrs 27/09/2024 as follows:

Walla Walla substation has been cut into the existing Wagga - Jinderra (62) 330 kV line to form the following circuits:

Jinderra - Walla Walla 62 330 kV Transmission Line
Walla Walla - Wagga 6Y 330 kV Transmission Line

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Cancellation of Actual (LOR1) condition in the NSW region - 26/09/2024

The Actual LOR1 Condition in the NSW Region advised in AEMO Electricity Market Notice No.118473 is cancelled at 2000 hrs 26/09/2024.

Manager NEM Real Time Operations