Market Notices

112449MARKET INTERVENTION17/12/2023 12:51:49 PM

Possible intervention to manage power system security in South Australia (SA) Region

AEMO ELECTRICITY MARKET NOTICE

Possible intervention to manage power system security in South Australia (SA) Region

The synchronous generating units currently expected to be synchronised in SA from 0100 hrs 18/12/2023 will be inadequate to maintain sufficient system strength in SA and hence a secure operating state.
AEMO may need to intervene by issuing a direction requiring one or more SA synchronous generating unit(s) to operate or remain synchronised to maintain power system security in SA.

Manager NEM Real Time Operations
112433INTER-REGIONAL TRANSFER17/12/2023 06:09:07 AM

Inter-regional transfer limit variation: Hazelwood - South Morang No 1 500 kV Line (VIC) - Voltage Control

AEMO ELECTRICITY MARKET NOTICE

The Hazelwood - South Morang No 1 500 kV Line has been de-energised to manage voltages in the Victoria region.

The following constraint set was invoked at 0600 hrs 17/12/2023

V-HWSM

The constraint set contains equations with the following interconnectors on the LHS.

T-V-MNSP
V-S-MNSP1
V-SA
VIC1-NSW1

Refer to AEMO Network Outage Scheduler (NOS) for return to service details

Manager NEM Real Time Operations
112432INTER-REGIONAL TRANSFER17/12/2023 05:48:19 AM

Inter-regional transfer limit variation - Sydney West - Vineyard No 29 330kV line - NSW region - 17/12/2023

AEMO ELECTRICITY MARKET NOTICE

Inter-regional transfer limit variation - Sydney West - Vineyard No 29 330kV line - NSW region - 17/12/2023

At 0545 hrs 17/12/2023 there was a short notice outage of Sydney West - Vineyard No 29 330kV line.

Constraint set(s) invoked: N-SWVY_29

The following constraint set(s) invoked at 0545 hrs 17/12/2023
N-SWVY_29

This constraint set(s) contains equations with the following interconnectors on the LHS.
N-Q-MNSP1,NSW1-QLD1,VIC1-NSW1

Refer to the AEMO Network Outage Scheduler for further information.

Manager NEM Real Time Operations
112423MARKET INTERVENTION16/12/2023 03:22:49 PM

Direction - SA region 16/12/2023

AEMO ELECTRICITY MARKET NOTICE.

Direction - SA region 16/12/2023

In accordance with section 116 of the National Electricity Law, AEMO has issued a direction to a participant in the SA region. For the purposes of the National Electricity Rules this is a direction under clause 4.8.9(a).

The direction was necessary to maintain the power system in a secure operating state.

AEMO may issue or revoke additional directions in order to meet the current requirement, unless sufficient market response is provided. A further market notice will be issued when all directions related to this requirement have been cancelled.

The issue of the direction commences an AEMO intervention event. AEMO declares all trading intervals during the event to be intervention trading intervals, commencing from the interval ending 1500 hrs on 16/12/2023.

Intervention pricing does not apply to this AEMO intervention event.

Manager NEM Real Time Operations
112422MARKET INTERVENTION16/12/2023 02:36:15 PM

Update - Possible intervention to manage power system security in SA region

AEMO ELECTRICITY MARKET NOTICE

Update - Possible intervention to manage power system security in SA region

Refer AEMO Electricity Market Notice 112415

The synchronous generating units currently expected to be synchronised in SA from 0700 hrs 17/12/2023 will be inadequate to maintain a secure operating state in SA .

AEMO estimates that, in the absence of sufficient market response by 1500 hrs 16/12/2023, AEMO may need to intervene by issuing a direction requiring one or more SA synchronous generating unit(s) to operate or remain synchronised to maintain power system security in SA.

Manager NEM Real Time Operations
112418MARKET INTERVENTION16/12/2023 04:37:22 PM

Cancellation - AEMO Intervention Event - Intervention trading intervals - Direction SA region 15/12/2023

AEMO ELECTRICITY MARKET NOTICE

Cancellation - AEMO Intervention Event - Intervention trading intervals - Direction SA region 15/12/2023

Refer Market Notice 112383

The AEMO Intervention Event and all associated directions are cancelled from 1630 hrs 16/12/2023

Manager NEM Real Time Operations
112415MARKET INTERVENTION16/12/2023 12:51:01 PM

Possible intervention to manage power system security in South Australia (SA) Region

AEMO ELECTRICITY MARKET NOTICE

Possible intervention to manage power system security in South Australia (SA) Region

The synchronous generating units currently expected to be synchronised in SA from 0630 hrs 17/12/2023 will be inadequate to maintain sufficient system strength in SA and hence a secure operating state.
AEMO may need to intervene by issuing a direction requiring one or more SA synchronous generating unit(s) to operate or remain synchronised to maintain power system security in SA.

Manager NEM Real Time Operations
112388MARKET INTERVENTION15/12/2023 04:00:18 PM

Cancellation - AEMO Intervention Event - Intervention trading intervals - Direction SA region 14/12/2023

AEMO ELECTRICITY MARKET NOTICE

Cancellation - AEMO Intervention Event - Intervention trading intervals - Direction SA region 14/12/2023

Refer Market Notice 112326

The AEMO Intervention Event and all associated directions are cancelled from 1600 hrs 15/12/2023

Manager NEM Real Time Operations
112383MARKET INTERVENTION15/12/2023 02:47:08 PM

Direction - SA region 15/12/2023

AEMO ELECTRICITY MARKET NOTICE.

Direction - SA region 15/12/2023

In accordance with section 116 of the National Electricity Law, AEMO has issued a direction to a participant in the SA region. For the purposes of the National Electricity Rules this is a direction under clause 4.8.9(a).

The direction was necessary to maintain the power system in a secure operating state.

AEMO may issue or revoke additional directions in order to meet the current requirement, unless sufficient market response is provided. A further market notice will be issued when all directions related to this requirement have been cancelled.

The issue of the direction commences an AEMO intervention event. AEMO declares all trading intervals during the event to be intervention trading intervals, commencing from the interval ending 1450 hrs on 15/12/2023.

Intervention pricing does not apply to this AEMO intervention event.

Manager NEM Real Time Operations
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