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Reclassification of non-credible contingency event due to existence of widespread abnormal condition/s - NEM regions.
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 Space Weather Watch in the NEM regions.
AEMO has therefore reclassified the occurrence of a non-credible contingency event involving multiple plant due to these abnormal conditions as credible.
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
Cancellation - Reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to planned outage : Ross 275 kV SVC and Ross 275/132 kV No. 4 transformer - Qld region.
Cancellation - Reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to planned outage.
AEMO considers the occurrence of a non-credible contingency event due to planned outage advised in AEMO Electricity Market Notice 116557 is no longer reasonably possible and accordingly its classification has reverted to non-credible.
Region: Qld
Elements: Ross 275 kV SVC and Ross 275/132 kV No. 4 transformer
Cancellation time: 1800 hrs 10/05/2024
Constraint set(s) invoked:
Nil
Manager NEM Real Time Operations
Reclassification of a Non-Credible Contingency Event as a Credible Contingency Event: Ross 275 kV SVC and Ross 275/132 kV No. 4 transformer - Qld region.
Reclassification of a Non-Credible Contingency Event as a Credible Contingency Event. AEMO considers the simultaneous trip of the following elements to now be more likely and reasonably possible. Accordingly AEMO has reclassified it as a credible contingency event.
Region: Qld
Elements: Ross 275 kV SVC and Ross 275/132 kV No. 4 transformer
Duration: 1400 hrs 09/05/2024 until further notice
Constraint set(s) invoked:
Nil
Manager NEM Real Time Operations
[EventId:202405081300_review] Prices for interval 08-May-2024 13:00 are subject to review
Issued by Australian Energy Market Operator Ltd at 1255 hrs on 8 May 2024
PRICES ARE SUBJECT TO REVIEW for trading interval 08-May-2024 13:00.
AEMO is reviewing these prices in accordance with:
- Clause 3.9.2B of the National Electricity Rules for Manifestly Incorrect Inputs
This is an AEMO autogenerated Market Notice.
[EventId:202405081255_review] Prices for interval 08-May-2024 12:55 are subject to review
Issued by Australian Energy Market Operator Ltd at 1250 hrs on 8 May 2024
PRICES ARE SUBJECT TO REVIEW for trading interval 08-May-2024 12:55.
AEMO is reviewing these prices in accordance with:
- Clause 3.9.2B of the National Electricity Rules for Manifestly Incorrect Inputs
This is an AEMO autogenerated Market Notice.
[EventId:202405081250_review] Prices for interval 08-May-2024 12:50 are subject to review
Issued by Australian Energy Market Operator Ltd at 1245 hrs on 8 May 2024
PRICES ARE SUBJECT TO REVIEW for trading interval 08-May-2024 12:50.
AEMO is reviewing these prices in accordance with:
- Clause 3.9.2B of the National Electricity Rules for Manifestly Incorrect Inputs
This is an AEMO autogenerated Market Notice.
[EventId:202405081245_review] Prices for interval 08-May-2024 12:45 are subject to review
Issued by Australian Energy Market Operator Ltd at 1240 hrs on 8 May 2024
PRICES ARE SUBJECT TO REVIEW for trading interval 08-May-2024 12:45.
AEMO is reviewing these prices in accordance with:
- Clause 3.9.2B of the National Electricity Rules for Manifestly Incorrect Inputs
This is an AEMO autogenerated Market Notice.
[EventId:202405081240_review] Prices for interval 08-May-2024 12:40 are subject to review
Issued by Australian Energy Market Operator Ltd at 1235 hrs on 8 May 2024
PRICES ARE SUBJECT TO REVIEW for trading interval 08-May-2024 12:40.
AEMO is reviewing these prices in accordance with:
- Clause 3.9.2B of the National Electricity Rules for Manifestly Incorrect Inputs
This is an AEMO autogenerated Market Notice.
[EventId:202405081235_review] Prices for interval 08-May-2024 12:35 are subject to review
Issued by Australian Energy Market Operator Ltd at 1230 hrs on 8 May 2024
PRICES ARE SUBJECT TO REVIEW for trading interval 08-May-2024 12:35.
AEMO is reviewing these prices in accordance with:
- Clause 3.9.2B of the National Electricity Rules for Manifestly Incorrect Inputs
This is an AEMO autogenerated Market Notice.