Market Notices

79313GENERAL NOTICE27/10/2020 02:27:02 PM

Network Augmentation Commissioned - NSW Region - 27/10/2020

AEMO ELECTRICITY MARKET NOTICE

Network Augmentation Commissioned - NSW Region - 27/10/2020

A network augmentation has been commissioned in the NSW region at 1420 hrs 27/10/2020 as follows:

Collector Wind Farm Substation has been cut into the existing Marluan - Yass 4 330 kV Line to form the following circuits:

Collector WF - Marulan 4 330 kV Transmission line
Collector WF - Yass 3L 330 kV Transmission line

Manager NEM Real Time Operations
     
79312RECLASSIFY CONTINGENCY27/10/2020 02:15:45 PM

Reclassification of a Non-Credible Contingency Event: Goonyella - Nth Goonyella T- Stoney Creek 7122 132 kV line and Goonyella - Newlands No. 7155 132 kV line in QLD1 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: QLD1

Lines: Goonyella - Nth Goonyella T- Stoney Creek 7122 132 kV and Goonyella - Newlands No. 7155 132 kV

Duration: 27/10/2020 14:15 until further notice

Constraint set(s) invoked:
NONE

Auto-generated on behalf of Manager NEM Real Time Operations
     
79310RECLASSIFY CONTINGENCY27/10/2020 11:36:00 AM

Reclassification of a Non-Credible Contingency Event: Bulli Creek - Dumaresq 8L 330KV line and Bulli Creek - Dumaresq 8M 330KV line in QLD1 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: QLD1

Lines: Bulli Creek - Dumaresq 8L 330KV and Bulli Creek - Dumaresq 8M 330KV

Duration: 27/10/2020 11:35 until further notice

Constraint set(s) invoked:
I-QNI_ONE_PHASE_N-2 Constraint set contains the following interconnector(s) on the left hand side:
NSW1-QLD1


Auto-generated on behalf of Manager NEM Real Time Operations
     
79309POWER SYSTEM EVENTS27/10/2020 11:38:38 AM

Non-credible contingency event - Vic region - 27/10/2020

AEMO ELECTRICITY MARKET NOTICE.

Non-credible contingency event - Vic region - 27/10/2020

At 1022 hrs the Newport D Power Station No 2 220 kV Busbar tripped.

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
     
79308RECLASSIFY CONTINGENCY27/10/2020 11:17:40 AM

Reclassification of a Non-Credible Contingency Event: Tarong - Chinchilla No.7168 132 kV line and Tarong - Chinchilla No.7183 132 kV line in QLD1 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: QLD1

Lines: Tarong - Chinchilla No.7168 132 kV and Tarong - Chinchilla No.7183 132 kV

Duration: 27/10/2020 11:17 until further notice

Constraint set(s) invoked:
NONE

Auto-generated on behalf of Manager NEM Real Time Operations
     
79307RESERVE NOTICE27/10/2020 12:51:43 PM

RESERVE NOTICE MT PASA PUBLICATION 27 October 2020

The MTPASA result published on 27 October 2020 identifies no Low Reserve Conditions.

Please note that MTPASA informs the market of potential reliability issues to allow the market to respond in the first instance, potentially avoiding the need for any market intervention or direction from AEMO.

For further information, please refer to:
https://www.aemo.com.au/Electricity/National-Electricity-Market-NEM/Data/Market-Management-System-MMS/Projected-Assessment-of-System-Adequacy

This notice supersedes Market Notice 79012 published on 20 October 2020.

Background
As part of a broader process of implementing the reliability standard, AEMO runs the Medium Term Projected Assessment of System Adequacy (MTPASA) process weekly to forecast expected unserved energy levels over a two year period. If the expected annual unserved energy exceeds the maximum level specified by the Reliability Standard, a Low Reserve Condition is identified.

For more information about how AEMO implements the reliability standard, please view the Reliability Standard Implementation Guidelines (RSIG) available on AEMO's website at
https://www.aemo.com.au/Electricity/National-Electricity-Market-NEM/Planning-and-forecasting/Reliability-Standard-Implementation-Guidelines

Forecasting
AEMO
     
79306INTER-REGIONAL TRANSFER27/10/2020 05:29:19 AM

Inter regional transfer limit variation - Armidale SVC outage - NSW Region

AEMO ELECTRICITY MARKET NOTICE

There is an unplanned outage of the Armidale SVC in the NSW region

Constraint set N-AR_VC1 is invoked from 0525 hrs until further notice

The constraint set contains equations with the following interconnectors on the LHS
N-Q-MNSP1
NSW1-QLD1

Refer to the AEMO Network Outage Schedule for further information.

Manager NEM Real Time Operations
     
79305RECLASSIFY CONTINGENCY26/10/2020 11:54:45 PM

Cancellation of a Non-Credible Contingency Event: Collinsville Nth-Clare Sth Tee King Creek 7128 132kV line and Strathmore-Clare South 7208 132kV line in QLD1 due to Lightning.

AEMO ELECTRICITY MARKET NOTICE

Cancellation of reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible. There is no longer any lightning activity in the vicinity of the following lines. Accordingly its classification has reverted to a non-credible contingency event.

Region: QLD1

Lines: Collinsville Nth-Clare Sth Tee King Creek 7128 132kV and Strathmore-Clare South 7208 132kV

Cancellation time: 26/10/2020 23:54

Constraint set(s) revoked:
NONE

Refer AEMO Electricity Market Notice 79304

Auto-generated on behalf of Manager NEM Real Time Operations
     
79304RECLASSIFY CONTINGENCY26/10/2020 09:53:30 PM

Reclassification of a Non-Credible Contingency Event: Collinsville Nth-Clare Sth Tee King Creek 7128 132kV line and Strathmore-Clare South 7208 132kV line in QLD1 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: QLD1

Lines: Collinsville Nth-Clare Sth Tee King Creek 7128 132kV and Strathmore-Clare South 7208 132kV

Duration: 26/10/2020 21:53 until further notice

Constraint set(s) invoked:
NONE

Auto-generated on behalf of Manager NEM Real Time Operations
     
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