Market Notices

76613RECLASSIFY CONTINGENCY13/08/2020 12:00:13 AM

Reclassification of a Non-Credible Contingency Event: Bayswater - Mt Piper No.5A3 500kV line and Wollar - Mt Piper No.5A5 500kV line in NSW1 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: NSW1

Lines: Bayswater - Mt Piper No.5A3 500kV and Wollar - Mt Piper No.5A5 500kV

Duration: 13/08/2020 00:00 until further notice

Constraint set(s) invoked:
NONE

Auto-generated on behalf of Manager NEM Real Time Operations
76612RECLASSIFY CONTINGENCY12/08/2020 06:29:20 PM

Cancellation of a Non-Credible Contingency Event: Bayswater - Mt Piper No.5A3 500kV line and Wollar - Mt Piper No.5A5 500kV line in NSW1 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: NSW1

Lines: Bayswater - Mt Piper No.5A3 500kV and Wollar - Mt Piper No.5A5 500kV

Cancellation time: 12/08/2020 18:29

Constraint set(s) revoked:
NONE

Refer AEMO Electricity Market Notice 76611

Auto-generated on behalf of Manager NEM Real Time Operations
76611RECLASSIFY CONTINGENCY12/08/2020 04:26:00 PM

Reclassification of a Non-Credible Contingency Event: Bayswater - Mt Piper No.5A3 500kV line and Wollar - Mt Piper No.5A5 500kV line in NSW1 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: NSW1

Lines: Bayswater - Mt Piper No.5A3 500kV and Wollar - Mt Piper No.5A5 500kV

Duration: 12/08/2020 16:25 until further notice

Constraint set(s) invoked:
NONE

Auto-generated on behalf of Manager NEM Real Time Operations
76610MARKET SYSTEMS12/08/2020 09:54:00 AM

CHG0060245 - Planned System Outage to Declared Wholesale Gas Market Production Systems

Change Number: CHG0060245

Notification issued to: Market Notice

Notification Type: Initial

Change Type: Normal

Service/ Component: Declared Wholesale Gas Market

Change Title: Planned System Outage to Declared Wholesale Gas Market Production Systems

Change Start Date & Time: 18/08/2020 17:30:00 AEST

Change End Date & Time: 18/08/2020 21:30:00 AEST

Outage Start Date & Time: 18/08/2020 18:00:00 AEST

Outage End Date & Time: 18/08/2020 20:30:00 AEST

Change Description:

Maintenance is to be performed on the Production Declared Wholesale Gas Market Systems to increase the reliability, security and stability. During the maintenance, there will be an outage as per the times mentioned.

Environment: Production

Participant Impact and Requirements:

The following impacts are expected during the Site transfer:
- There will be intermittent interruptions to the Declared Wholesale Gas Market Production Systems.
- There will be intermittent interruptions to the to the MIBB for the NSW/ACT Retail Gas Market Participants

Support Information:
Report any impacts to the AEMO Information and Support Hub or on External 1300 236 600.

76609NON-CONFORMANCE12/08/2020 01:50:09 AM

NON-CONFORMANCE Region VIC1 Wednesday, 12 August 2020

AEMO ELECTRICITY MARKET NOTICE

NON-CONFORMANCE VIC1 Region Wednesday, 12 August 2020

AEMO declared a schedule generating unit non-conforming

Unit: YWPS2
Duration: 12/08/2020 01:40 to 12/08/2020 01:50
Amount: -42 MW
Constraint: NC-V_YWPS2

Auto-generated on behalf of Manager NEM Real Time Operations
76608CONSTRAINTS11/08/2020 05:34:13 PM

Update to system strength requirements in North Queensland

AEMO ELECTRICITY MARKET NOTICE

Refer to market notice 76455

AEMO and Powerlink are continuing to investigate system strength requirements in North Queensland. A revision to the constraint equations will be implemented at 1400 hrs Wednesday 12th August 2020.

Combination 8 (in market notice 74655) has been updated to allow for 1 unit on at Callide B or Callide C (instead of 1 unit on at both).

The combination will be updated to:
8 - 2 x Stanwell, 1 x Callide B or 1 x Callide C, 3 x Gladstone, 7 x Total Stanwell+Callide+Gladstone, 2 x Kareeya: 100% output at Clare, Collinsville, Daydream, Hamilton, Hayman, Kidston, Ross, Rugby Run, Whitsunday

The constraint equations in the Q-NIL set of the form below will be modified:
Q_NIL_STRGTH_XXX
Q_NIL_STRGTH_XXX_I

For further details please contact James Lindley at james.lindley@aemo.com.au or Simon Taylor at businessdevelopment@powerlink.com.au

Ben Blake
AEMO Operations
76607RESERVE NOTICE11/08/2020 03:26:28 PM

RESERVE NOTICE MT PASA PUBLICATION 11 August 2020

The MTPASA result published on 11 August 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 76528 published on 04 August 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
76606MARKET SYSTEMS11/08/2020 12:17:04 PM

CHG0060467: Scheduled maintenance on Pre-production MDM

Market Notice

Change Number: CHG0060467

Notification issued to: Market Notice

Notification Type: Initial

Change Type: Normal

Service/ Component: MSATS - Meter Data Management

Change Title: Scheduled maintenance on Pre-production MDM

Change Start Date & Time: 13/08/2020 09:00:00 AEST

Change End Date & Time: 14/08/2020 17:00:00 AEST

Outage Start Date & Time: 13/08/2020 09:00:00 AEST

Outage End Date & Time: 14/08/2020 17:00:00 AEST

Change Description:

Scheduled maintenance on Pre-production MDM

Environment: Pre-Production

Participant Impact and Requirements:

Awareness of this outage. The inactive MSATS Pre-Production MDM database will be unavailable during the outage times mentioned above to perform the maintenance activities.

Support Information:
Report any impacts to the AEMO Information and Support Hub or on External 1300 236 600.
76605MARKET INTERVENTION11/08/2020 09:46:10 AM

Cancellation - AEMO Intervention Event - Intervention dispatch intervals - Direction Victoria region 11/08/2020

AEMO ELECTRICITY MARKET NOTICE

Cancellation - AEMO Intervention Event - Intervention dispatch intervals - Direction Victoria region 11/08/2020

Refer Market Notice 76603

The AEMO Intervention Event and all associated directions are cancelled from 0936 hrs 11/08/2020

Manager NEM Real Time Operations
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