AEMO ELECTRICITY MARKET NOTICE

Cancellation of reclassification of a Non-Credible Contingency Event as a Credible Contingency: Collinsville North - Proserpine 7125 132 kV Transmission line opening at the Proserpine end only on 25/02/2019

Refer to AEMO Electricity Market Notice 67398

The cause of this non-credible contingency event has been identified and AEMO is satisfied that another occurrence of this event is unlikely under the current circumstances

Region: QLD1

Lines: Collinsville North - Proserpine 7125 132 kV Transmission line

Cancellation time: 26/02/2019 11:35 hrs

Constraint set(s) invoked: NONE


Manager NEM Real Time Operations

The MTPASA result published on 26 February 2019 identifies no Low Reserve Conditions over the next 2 years.

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 67318 published on 19 February 2019.

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
http://www.aemo.com.au/-/media/Files/Stakeholder_Consultation/Consultations/Electricity_Consultations/2016/EAAP/Reliability-Standard-Implementation-Guidelines.pdf

Forecasting
AEMO

Market Notice

Change Number: CHG0053280

Notification issued to: Market Notice

Notification Type: Initial

Change Type: Normal

Service/ Component: MSATS - Consumer Administration and Transfer Solution(CATS)

Change Title: Pre-Production MSATS - Consumer Administration and Transfer Solution(CATS) Maintenance

Change Start Date & Time: 26/02/2019 09:00:00 AEST

Change End Date & Time: 26/02/2019 12:00:00 AEST

Outage Start Date & Time: 26/02/2019 09:00:00 AEST

Outage End Date & Time: 26/02/2019 12:00:00 AEST

Change Description:

Pre-Production MSATS will be down to perform maintenance activities.

Environment: Pre-Production

Participant Impact and Requirements:

All access to the MSATS Pre- Production System will be unavailable.

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

AEMO ELECTRICITY MARKET NOTICE

Reclassification of a Non-Credible Contingency Event as a Credible Contingency: Collinsville North - Proserpine 7125 132 kV Transmission line opening at the Proserpine end only - 25/02/2019

AEMO considers the opening of the Collinsville North - Proserpine 7125 132 kV Transmission line at the Proserpine end only now to be more likely and reasonably possible. Accordingly AEMO has reclassified it as a credible contingency event.

Refer to AEMO Electricity Market Notice 67397

Region: QLD1

Lines: Collinsville North - Proserpine 7125 132 kV Transmission line

Duration: 25/02/2019 20:58 hrs until further notice

Constraint set(s) invoked: NONE


Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Non-credible contingency event - QLD region - 25/02/2019

At 2047 hrs the Collinsville North - Proserpine 7125 132 kV Transmission line opened at the Proserpine end only.

The cause of this non credible contingency event is not known at this stage. AEMO will reclassify this event as a credible contingency event.

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Issued by Australian Energy Market Operator Ltd at 1900 hrs on 25 February 2019

CANCELLATION - ACTUAL NEGATIVE SETTLEMENT RESIDUES - VIC to NSW - 25 February 2019.

Refer to market notice: 67395

AEMO has ceased taking action to minimize the further accumulation of negative settlement residues on the VIC to NSW directional interconnector.

The negative residue constraint NRM_VIC1_NSW1 ceased operating at 1900 hrs on 25 February 2019.

This is an AEMO autogenerated Market Notice.

AEMO ELECTRICITY MARKET NOTICE

Issued by Australian Energy Market Operator Ltd at 1805 hrs on 25 February 2019

ACTUAL NEGATIVE SETTLEMENT RESIDUES - VIC to NSW - 25 February 2019.

Electricity Market outcomes have resulted in the accumulation of negative settlement residues that have exceeded the allowable negative residue threshold for the VIC to NSW directional interconnector.

The negative residue constraint set NRM_VIC1_NSW1 commenced operating from 1805 hrs on 25 February 2019.

This constraint set contains an equation with the following interconnectors on the LHS:
VIC1-NSW1

The RHS of the constraint equation may be adjusted to manage residues.


This is an AEMO autogenerated Market Notice.

Market Notice

Change Number: CHG0053306

Notification issued to: Market Notice

Notification Type: Initial

Change Type: Normal

Service/ Component: MSATS - Meter Data Management

Change Title: Pre-Production MSATS Maintenance

Change Start Date & Time: 26/02/2019 09:00:00 AEST

Change End Date & Time: 26/02/2019 12:00:00 AEST

Outage Start Date & Time: 26/02/2019 09:00:00 AEST

Outage End Date & Time: 26/02/2019 12:00:00 AEST

Change Description:

Pre-Production MSATS will be down to perform maintenance activities.

Environment: Pre-Production

Participant Impact and Requirements:

All access to the MSATS Pre- Production System will be unavailable.

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

Market Notice

Change Number: CHG0053280

Notification issued to: Market Notice

Notification Type: Initial

Change Type: Normal

Service/ Component: MSATS - Consumer Administration and Transfer Solution(CATS)

Change Title: Pre-Production MSATS - Consumer Administration and Transfer Solution(CATS) Maintenance

Change Start Date & Time: 26/02/2019 09:00:00 AEST

Change End Date & Time: 26/02/2019 12:00:00 AEST

Outage Start Date & Time: 20/02/2019 09:00:00 AEST

Outage End Date & Time: 26/02/2019 12:00:00 AEST

Change Description:

Pre-Production MSATS will be down to perform maintenance activities.

Environment: Pre-Production

Participant Impact and Requirements:

All access to the MSATS Pre- Production System will be unavailable.

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