Market Notices

112077RECLASSIFY CONTINGENCY08/12/2023 11:36:01 AM

Reclassification of a Non-Credible Contingency Event: Farrell - Reece No.1 220 kV line and Farrell - Reece No.2 220 kV line in TAS1 due to Lightning.

AEMO ELECTRICITY MARKET NOTICE

Reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits to now be more likely and reasonably possible. Accordingly AEMO has reclassified it as a credible contingency event.

Region: TAS1

Lines: Farrell - Reece No.1 220 kV and Farrell - Reece No.2 220 kV

Duration: 08/12/2023 11:35 until further notice

Constraint set(s) invoked:
F-T-FARE_N-2 Constraint set contains the following interconnector(s) on the left hand side:
T-V-MNSP1


Auto-generated on behalf of Manager NEM Real Time Operations
112074RECLASSIFY CONTINGENCY08/12/2023 10:50:21 AM

Reclassification of non-credible contingency event due to existence of widespread abnormal conditions - SA region.

AEMO ELECTRICITY MARKET NOTICE.

AEMO has identified that a non-credible contingency event impacting the power system is more likely to occur and is considered reasonably possible because of the existence of widespread abnormal conditions namely severe weather in the SA region.

AEMO has therefore reclassified the occurrence of a non-credible contingency event involving multiple plant due to these abnormal conditions as credible.

AEMO has taken the following action to maintain power system security at 1050 hrs 08/12/2023.
Constraint set invoked: I-VS_250

Duration: 1050 hrs 08/12/2023. until further notice

Need for further measures is being monitored and further measures may be implemented in line with the Power System Security Guidelines (SO_OP_3715).

Manager NEM Real Time Operations
112073PRICES UNCHANGED08/12/2023 10:41:04 AM

[EventId:202312081010_confirmed] Prices for interval 08-Dec-2023 10:10 are now confirmed

AEMO ELECTRICITY MARKET NOTICE

Issued by Australian Energy Market Operator Ltd at 1035 hrs on 8 December 2023

PRICES ARE NOW CONFIRMED for trading interval 08-Dec-2023 10:10.

In accordance with Market Notice 112060 AEMO has reviewed this trading interval and determined that:
- Manifestly Incorrect Inputs did not apply

Prices remain unchanged.


This is an AEMO autogenerated Market Notice.
112072PRICES UNCHANGED08/12/2023 10:39:47 AM

[EventId:202312081035_confirmed] Prices for interval 08-Dec-2023 10:35 are now confirmed

AEMO ELECTRICITY MARKET NOTICE

Issued by Australian Energy Market Operator Ltd at 1035 hrs on 8 December 2023

PRICES ARE NOW CONFIRMED for trading interval 08-Dec-2023 10:35.

In accordance with Market Notice 112067 AEMO has reviewed this trading interval and determined that:
- Manifestly Incorrect Inputs did not apply

Prices remain unchanged.


This is an AEMO autogenerated Market Notice.
112071PRICES UNCHANGED08/12/2023 10:38:48 AM

[EventId:202312081030_confirmed] Prices for interval 08-Dec-2023 10:30 are now confirmed

AEMO ELECTRICITY MARKET NOTICE

Issued by Australian Energy Market Operator Ltd at 1035 hrs on 8 December 2023

PRICES ARE NOW CONFIRMED for trading interval 08-Dec-2023 10:30.

In accordance with Market Notice 112066 AEMO has reviewed this trading interval and determined that:
- Manifestly Incorrect Inputs did not apply

Prices remain unchanged.


This is an AEMO autogenerated Market Notice.
112070PRICES UNCHANGED08/12/2023 10:37:39 AM

[EventId:202312081025_confirmed] Prices for interval 08-Dec-2023 10:25 are now confirmed

AEMO ELECTRICITY MARKET NOTICE

Issued by Australian Energy Market Operator Ltd at 1035 hrs on 8 December 2023

PRICES ARE NOW CONFIRMED for trading interval 08-Dec-2023 10:25.

In accordance with Market Notice 112064 AEMO has reviewed this trading interval and determined that:
- Manifestly Incorrect Inputs did not apply

Prices remain unchanged.


This is an AEMO autogenerated Market Notice.
112069PRICES UNCHANGED08/12/2023 10:36:38 AM

[EventId:202312081020_confirmed] Prices for interval 08-Dec-2023 10:20 are now confirmed

AEMO ELECTRICITY MARKET NOTICE

Issued by Australian Energy Market Operator Ltd at 1035 hrs on 8 December 2023

PRICES ARE NOW CONFIRMED for trading interval 08-Dec-2023 10:20.

In accordance with Market Notice 112062 AEMO has reviewed this trading interval and determined that:
- Manifestly Incorrect Inputs did not apply

Prices remain unchanged.


This is an AEMO autogenerated Market Notice.
112068PRICES UNCHANGED08/12/2023 10:35:21 AM

[EventId:202312081015_confirmed] Prices for interval 08-Dec-2023 10:15 are now confirmed

AEMO ELECTRICITY MARKET NOTICE

Issued by Australian Energy Market Operator Ltd at 1035 hrs on 8 December 2023

PRICES ARE NOW CONFIRMED for trading interval 08-Dec-2023 10:15.

In accordance with Market Notice 112061 AEMO has reviewed this trading interval and determined that:
- Manifestly Incorrect Inputs did not apply

Prices remain unchanged.


This is an AEMO autogenerated Market Notice.
112059RECLASSIFY CONTINGENCY08/12/2023 09:52:08 AM

Reclassification of a Non-Credible Contingency Event: Loss of Sheffield 220 kV switchyard (all 220 kV buses) in Tas due to planned work

AEMO ELECTRICITY MARKET NOTICE.

Reclassification of a non-credible contingency event as a credible contingency event due to planned work.

AEMO considers the simultaneous trip of the following circuits to now be more likely and reasonably possible. Accordingly AEMO has reclassified it as a credible contingency event.

Region:TAS

Plant: Sheffield 220 kV switchyard (all 220 kV buses)

Duration: 08/12/2023 : 1000 hrs until further notice

Constraint set(s) invoked: T:SH_220_N-2

Manager NEM Real Time Operations
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