Market Notices

112206MARKET INTERVENTION12/12/2023 02:23:46 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 112204

The synchronous generating units currently expected to be synchronised in SA from 0730 hrs 13/12/2023 will be inadequate to maintain a secure operating state in SA .

AEMO estimates that, in the absence of sufficient market response by 1700 hrs 12/12/2023, 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
112204MARKET INTERVENTION12/12/2023 12:54:12 PM

Possible intervention to manage power system security in SA Region

AEMO ELECTRICITY MARKET NOTICE

Possible intervention to manage power system security in SA Region

The synchronous generating units currently expected to be synchronised in SA from 0730 hrs 13/12/2023 will be inadequate to maintain a secure operating state in SA.

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
112199NON-CONFORMANCE12/12/2023 09:25:17 AM

NON-CONFORMANCE Region SA1 Tuesday, 12 December 2023

AEMO ELECTRICITY MARKET NOTICE

NON-CONFORMANCE SA1 Region Tuesday, 12 December 2023

AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:

Unit: NBHWF1
Duration: 12/12/2023 09:00 to 12/12/2023 09:25
Amount: 17 MW
Constraint: NC-S_NBHWF1

Auto-generated on behalf of Manager NEM Real Time Operations
112187POWER SYSTEM EVENTS11/12/2023 04:04:48 PM

Update - Non-credible contingency event - SA region - 11/12/2023

AEMO ELECTRICITY MARKET NOTICE.

Update - Non-credible contingency event - SA region - 11/12/2023

Refer AEMO Electricity Market Notice 112181

At 1554 hrs the remaining Mintaro - Waterloo 132 kV Line was returned to service.

The following constraint set(s) revoked:
S-X-MNWT+CB

The cause of this non-credible contingency event has been identified and AEMO is satisfied that another occurrence of this event is unlikely under the current circumstances.

AEMO will not reclassify this event as a credible contingency event.

Manager NEM Real Time Operations
112185MARKET INTERVENTION11/12/2023 03:20:21 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 112176

The synchronous generating units currently expected to be synchronised in SA from 0900 hrs 12/12/2023 will be inadequate to maintain a secure operating state in SA .

AEMO estimates that, in the absence of sufficient market response by 0800 hrs 12/12/2023, 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
112178MARKET INTERVENTION11/12/2023 02:00:57 PM

Cancellation - AEMO Intervention Event - Intervention trading intervals - Direction SA region 08/12/2023

AEMO ELECTRICITY MARKET NOTICE

Cancellation - AEMO Intervention Event - Intervention trading intervals - Direction SA region 08/12/2023

Refer Market Notice 112159

The AEMO Intervention Event and all associated directions are cancelled from 1400 hrs 11/12/2023

Manager NEM Real Time Operations
112176MARKET INTERVENTION11/12/2023 12:46:58 PM

Possible intervention to manage power system security in SA Region

AEMO ELECTRICITY MARKET NOTICE

Possible intervention to manage power system security in SA Region

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

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
112173NON-CONFORMANCE11/12/2023 10:35:17 AM

NON-CONFORMANCE Region QLD1 Monday, 11 December 2023

AEMO ELECTRICITY MARKET NOTICE

NON-CONFORMANCE QLD1 Region Monday, 11 December 2023

AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:

Unit: GSTONE5
Duration: 11/12/2023 10:30 to 11/12/2023 10:35
Amount: 15 MW
Constraint: NC-Q_GSTONE5

Auto-generated on behalf of Manager NEM Real Time Operations
112165POWER SYSTEM EVENTS11/12/2023 06:36:10 AM

Non-credible contingency event - SA region - 11/12/2023

AEMO ELECTRICITY MARKET NOTICE.

Non-credible contingency event - SA region - 11/12/2023

At 0444 hrs the Mintaro - Waterloo 132 kV Line tripped and the Clare North - Mintaro 132 kV Line tripped at the Mintaro end only.

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
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