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Reclassification of a Non-Credible Contingency Event: Eildon PS - Mt Beauty No.1 220 kV line and Eildon PS - Mt Beauty No.2 220 kV line in VIC1 due to Lightning.
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: VIC1
Lines: Eildon PS - Mt Beauty No.1 220 kV and Eildon PS - Mt Beauty No.2 220 kV
Duration: 10/05/2024 16:51 until further notice
Constraint set(s) invoked:
NONE
Auto-generated on behalf of Manager NEM Real Time Operations
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
[EventId:199] AP STARTED for ENERGY in NSW1 at 10 May 2024 03:55
Issued by Australian Energy Market Operator Ltd at 0355 hrs on 10 May 2024
ADMINISTERED PRICE PERIOD DECLARED in NSW1 region.
AEMO has determined that the rolling sum of the uncapped spot prices for the NSW1 region over the previous 2016 trading intervals has exceeded the cumulative price threshold (CPT) of $1,490,200.00.
In accordance with Clause 3.14.2(b) of the National Electricity Rules, AEMO has determined that an administered price period will commence at the trading interval starting 0405 hrs on 10 May 2024 and will continue through to the end of that trading day.
An administered price cap (APC) of 600 $/MWh will apply to all trading intervals during this administered price period. This APC will apply to spot prices and to all market ancillary service prices in the NSW1 region.
An administered floor price (AFP) of -600 $/MWh will apply to spot prices.
AEMO will continue to monitor the rolling sum of the uncapped spot prices and issue further Market Notices as required.
This is an AEMO autogenerated Market Notice.
[EventId:198] AP ENDED for ENERGY in NSW1 at 10 May 2024 03:55
Issued by Australian Energy Market Operator Ltd at 0355 hrs on 09 May 2024
ADMINISTERED PRICE PERIOD ENDS in NSW1 region.
In accordance with Clause 3.14.2(b) of the National Electricity Rules, AEMO is notifying market participants that the administered price period declared for the NSW1 region in market notice 116554 will end at 0400 hrs on 10 May 2024.
This is an AEMO autogenerated Market Notice.
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:198] AP STARTED for ENERGY in NSW1 at 09 May 2024 03:55
Issued by Australian Energy Market Operator Ltd at 0355 hrs on 09 May 2024
ADMINISTERED PRICE PERIOD DECLARED in NSW1 region.
AEMO has determined that the rolling sum of the uncapped spot prices for the NSW1 region over the previous 2016 trading intervals has exceeded the cumulative price threshold (CPT) of $1,490,200.00.
In accordance with Clause 3.14.2(b) of the National Electricity Rules, AEMO has determined that an administered price period will commence at the trading interval starting 0405 hrs on 09 May 2024 and will continue through to the end of that trading day.
An administered price cap (APC) of 600 $/MWh will apply to all trading intervals during this administered price period. This APC will apply to spot prices and to all market ancillary service prices in the NSW1 region.
An administered floor price (AFP) of -600 $/MWh will apply to spot prices.
AEMO will continue to monitor the rolling sum of the uncapped spot prices and issue further Market Notices as required.
This is an AEMO autogenerated Market Notice.
[EventId:197] AP ENDED for ENERGY in NSW1 at 09 May 2024 03:55
Issued by Australian Energy Market Operator Ltd at 0355 hrs on 08 May 2024
ADMINISTERED PRICE PERIOD ENDS in NSW1 region.
In accordance with Clause 3.14.2(b) of the National Electricity Rules, AEMO is notifying market participants that the administered price period declared for the NSW1 region in market notice 116550 will end at 0400 hrs on 09 May 2024.
This is an AEMO autogenerated Market Notice.
[EventId:197] AP STARTED for ENERGY in NSW1 at 08 May 2024 19:45
Issued by Australian Energy Market Operator Ltd at 1945 hrs on 08 May 2024
ADMINISTERED PRICE PERIOD DECLARED in NSW1 region.
AEMO has determined that the rolling sum of the uncapped spot prices for the NSW1 region over the previous 2016 trading intervals has exceeded the cumulative price threshold (CPT) of $1,490,200.00.
In accordance with Clause 3.14.2(b) of the National Electricity Rules, AEMO has determined that an administered price period will commence at the trading interval starting 1955 hrs on 08 May 2024 and will continue through to the end of that trading day.
An administered price cap (APC) of 600 $/MWh will apply to all trading intervals during this administered price period. This APC will apply to spot prices and to all market ancillary service prices in the NSW1 region.
An administered floor price (AFP) of -600 $/MWh will apply to spot prices.
AEMO will continue to monitor the rolling sum of the uncapped spot prices and issue further Market Notices as required.
This is an AEMO autogenerated Market Notice.