Market Notices

75234NON-CONFORMANCE07/04/2020 05:30

NON-CONFORMANCE Region NSW1 Tuesday, 7 April 2020

AEMO ELECTRICITY MARKET NOTICE

NON-CONFORMANCE NSW1 Region Tuesday, 7 April 2020

AEMO declared a schedule generating unit non-conforming

Unit: VP5
Duration: 07/04/2020 17:25 to 07/04/2020 17:30
Amount: -32 MW
Constraint: NC-N_VP5

Auto-generated on behalf of Manager NEM Real Time Operations
75233RESERVE NOTICE07/04/2020 03:28

RESERVE NOTICE MT PASA PUBLICATION 07 April 2020

The MTPASA result published on 07 April 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 75088 published on 31 March 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
75232NON-CONFORMANCE07/04/2020 07:40

NON-CONFORMANCE Region NSW1 Tuesday, 7 April 2020

AEMO ELECTRICITY MARKET NOTICE

NON-CONFORMANCE NSW1 Region Tuesday, 7 April 2020

AEMO declared a schedule generating unit non-conforming

Unit: VP5
Duration: 07/04/2020 07:35 to 07/04/2020 07:40
Amount: 23 MW
Constraint: NC-N_VP5

Auto-generated on behalf of Manager NEM Real Time Operations
75231INTER-REGIONAL TRANSFER07/04/2020 07:42

Cancellation Inter-Regional Transfer limit variation - Directlink control unavailable (NSW Region)

AEMO ELECTRICITY MARKET NOTICE

Cancellation Inter-Regional Transfer limit variation - Directlink control unavailable (NSW Region).

Refer AEMO Electricity Market Notice 75230

AEMO has been notified that the controls to vary Directlink output are now available.

Constraint set I-CTRL_ISSUE_TE revoked at 0735 hrs. 07/04/2020

Manager NEM Real Time Operations
75230INTER-REGIONAL TRANSFER07/04/2020 06:09

Inter-Regional Transfer limit variation - Directlink control unavailable (NSW Region)

AEMO ELECTRICITY MARKET NOTICE

AEMO has been notified that the controls to vary Directlink output are unavailable until further notice.

Constraint set I-CTRL_ISSUE_TE invoked from 0610 hrs 7/04/2020.

The constraint set contains equations with the following interconnector on the LHS:

N-Q-MNSP1


Manager NEM Real Time Operations
75229RECLASSIFY CONTINGENCY06/04/2020 07:43

Cancellation of a Non-Credible Contingency Event: Hazelwood - Rowville No.1 220kV line and Hazelwood - Rowville No.2 220kV line in VIC1 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: VIC1

Lines: Hazelwood - Rowville No.1 220kV and Hazelwood - Rowville No.2 220kV

Cancellation time: 06/04/2020 19:43

Constraint set(s) revoked:
V-HWRO_R_N-2 Constraint set contains the following interconnector(s) on the left hand side:
NONE


Refer AEMO Electricity Market Notice 75228

Auto-generated on behalf of Manager NEM Real Time Operations
75228RECLASSIFY CONTINGENCY06/04/2020 06:43

Reclassification of a Non-Credible Contingency Event: Hazelwood - Rowville No.1 220kV line and Hazelwood - Rowville No.2 220kV line in VIC1 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: VIC1

Lines: Hazelwood - Rowville No.1 220kV and Hazelwood - Rowville No.2 220kV

Duration: 06/04/2020 18:43 until further notice

Constraint set(s) invoked:
V-HWRO_R_N-2 Constraint set contains the following interconnector(s) on the left hand side:
NONE


Auto-generated on behalf of Manager NEM Real Time Operations
75227MARKET SYSTEMS06/04/2020 02:56

CHG0058771 : Pre-Production MSATS B2B maintenance activity

Change Number: CHG0058771

Notification issued to: Market Notice

Notification Type: Initial

Change Type: Normal

Service/ Component: MSATS - Business to Business data exchange

Change Title: Pre-Production MSATS B2B maintenance activity

Change Start Date & Time: 08/04/2020 09:00:00 AEST

Change End Date & Time: 16/04/2020 16:00:00 AEST

Outage Start Date & Time:

Outage End Date & Time:

Change Description:

Please be aware that AEMO will be performing maintenance activities in Electricity & Gas Retail B2B pre-production environment.

Environment: Pre-Production

Participant Impact and Requirements:

Please be aware of this planned maintenance activity and potential for intermittently degraded response times if you are using the pre-production B2B systems. This may mean an intermittent degradation in B2B responses during the implementation window.

Support Information:
Report any impacts to the AEMO Information and Support Hub or on External 1300 236 600.
75226CONSTRAINTS06/04/2020 09:50

Update to system strength requirements in North Queensland

AEMO ELECTRICITY MARKET NOTICE

Refer to market notice 74987

AEMO and Powerlink are continuing to investigate system strength requirements in North Queensland. A revision to the requirements will be implemented at 1300 hrs today.

The revised minimum generator combinations and limits are:
1 - 3 x Stanwell, 1 x Callide B, 1 x Callide C, 3 x Gladstone, 10 x Total Stanwell+Callide+Gladstone, 4 x Kareeya, 2 x Barron Gorge: 100% output
2 - 3 x Stanwell, 1 x Callide B, 1 x Callide C, 3 x Gladstone, 10 x Total Stanwell+Callide+Gladstone, 4 x Kareeya, 1 x Barron Gorge: 80% output
3 - 3 x Stanwell, 1 x Callide B, 1 x Callide C, 3 x Gladstone, 10 x Total Stanwell+Callide+Gladstone, 2 x Kareeya, 1 x Townsville GT: 80% output
4 - 3 x Stanwell, 1 x Callide B, 1 x Callide C, 3 x Gladstone, 10 x Total Stanwell+Callide+Gladstone, 2 x Kareeya, 1 x Barron Gorge: 70% output
5 - 3 x Stanwell, 1 x Callide B, 1 x Callide C, 3 x Gladstone, 10 x Total Stanwell+Callide+Gladstone, 4 x Kareeya: 70% output

The following new combination will also be implemented:
4H - 3 x Stanwell, 1 x Callide B, 1 x Callide C, 3 x Gladstone, 10 x Total Stanwell+Callide+Gladstone, 2 x Kareeya, 1 x Barron Gorge, 50% or less output at Mt Emerald: 100% output for Haughton solar farm. This new limit takes into account the current physical limitation on generation from Sun Metals Solar Farm.

If these combinations are not met all three generators have a limit of 0 MW and 0 inverters.

The constraint equations are: Q_NIL_STRGTH_MEWF, Q_NIL_STRGTH_HAUSF, Q_NIL_STRGTH_SMSF.

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
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