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Reclassification of a Non-Credible Contingency Event: Chapel Street - Liapootah No. 1 and No. 2 220 kV Lines in Tasmania due to Lightning.
Reclassification of a Non-Credible Contingency Event: Chapel Street - Liapootah No. 1 and No. 2 220 kV Lines in Tasmania due to Lightning.
Lightning is occurring near the Chapel Street - Liapootah No. 1 and No. 2 220 kV Lines.
AEMO considers the simultaneous trip of those circuits to now be more likely.
Therefore AEMO has reclassified this as a credible contingency event from 1040 hrs 19 May 2016 until further notice.
Constraint Set T-CSLI_N-2 invoked
Manager NEM Real Time Operations
Reclassification of a Non-Credible Contingency Event: Farrell - Sheffield No. 1 and No. 2 220 kV Lines in Tasmania due to Lightning.
Reclassification of a Non-Credible Contingency Event: Farrell - Sheffield No. 1 and No. 2 220 kV Lines in Tasmania due to Lightning.
Lightning is occurring near the Farrell - Sheffield No. 1 and No. 2 220 kV Lines.
AEMO considers the simultaneous trip of those circuits to now be more likely.
Therefore AEMO has reclassified this as a credible contingency event from 1015 hrs 19 May 2016 until further notice.
Constraint Sets: F-T-FASH_N-2 T-FASH_N-2_HM_C invoked
These Constraint Sets contain equations with the following interconnector on the LHS.
T-V-MNSP1
Manager NEM Real Time Operations
Reclassification of a Non-Credible Contingency Event: Farrell - Reece No. 1 and No. 2 220 kV Lines in Tasmania due to Lightning.
Reclassification of a Non-Credible Contingency Event: Farrell - Reece No. 1 and No. 2 220 kV Lines in Tasmania due to Lightning.
Lightning is occurring near the Farrell- Reece No. 1 and No. 2 220 kV Lines.
AEMO considers the simultaneous trip of those circuits to now be more likely.
Therefore AEMO has reclassified this as a credible contingency event from 1015 hrs 19 May 2016 until further notice.
Constraint Set F-T-FARE_N-2 invoked.
Manager NEM Real Time Operations
Reclassification of a Non-Credible Contingency Event: Farrell - John Butters 220 kV Line and the Farrell - Rosebery Tee Queenstown - Newton 110 kV Line in Tasmania due to Lightning.
Reclassification of a Non-Credible Contingency Event: Farrell - John Butters 220 kV Line and the Farrell - Rosebery Tee Queenstown - Newton 110 kV Line in Tasmania due to Lightning.
Lightning is occurring near the Farrell - John Butters 220 kV Line and the Farrell - Rosebery Tee Queenstown - Newton 110 kV Line.
AEMO considers the simultaneous trip of those circuits to now be more likely.
Therefore AEMO has reclassified this as a credible contingency event from 1010 hrs 19 MAY 2016 until further notice.
Manager NEM Real Time Operations
Market Settlements & Transfer System
Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: Market Settlements & Transfer System
Change Title: Planned System Maintenance (Site Transfer) on Market Settlement and Transfer Solutions (MSATS)
Change Start Date & Time: 25/05/2016 17:30:00 AEST
Change End Date & Time: 25/05/2016 19:30:00 AEST
Outage Start Date & Time: 25/05/2016 17:30:00 AEST
Outage End Date & Time: 25/05/2016 19:30:00 AEST
Change Description:
Electricity MSATS Production Site Transfer will be carried out from QLD to NSW Site to allow maintenance work on QLD Site.
Environment: Production
Participant Impact and Requirements:
Access to all parts of the Electricity MSATS system may be interrupted during the outage period. Access should be attempted outside these times.
Support Information:
Report any impacts to the AEMO Information and Support Hub or on External 1300 236 600.
Electricity Market Management System
Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: Electricity Market Management System
Change Title: Planned System Change - Electricity MMS Production Bay Transfer - EMMS Mid Year Release
Change Start Date & Time: 24/05/2016 13:00:00 AEST
Change End Date & Time: 24/05/2016 15:00:00 AEST
Change Description:
The EMMS Production Database in the active site is to be transferred to the alternate bay to support the maintenance activities.
Environment: Production
Participant Impact and Requirements:
The transfer is not expected to have any impact, however there may be some disconnections to the AEMO Web Portal. Participants are reminded that this activity is not without risk and therefore if an electricity market system issue is identified after the transfer it should be reported to AEMO
Support Information:
Report any impacts to the AEMO Information and Support Hub or on External 1300 236 600.
Cancellation -Inter-regional transfer limit variation - Tarong to South Pine (832) 275kV Line (Qld) - Voltage Control
Cancellation -Inter-regional transfer limit variation - Tarong to South Pine (832) 275kV Line (Qld) - Voltage Control - 18 May 2016
Refer MN 53400
The Tarong to South Pine (832) 275kV Line has been returned to service.
The following constraint set was revoked at 0540 hrs..
Q-TRSP_832
The constraint set contains equations with the following interconnectors on the LHS.
N-Q-MNSP1
Manager NEM Real Time Operations
Inter-regional transfer limit variation - Tarong to South Pine (832) 275kV Line (Qld) - Voltage Control - 18 May 2016
Inter-regional transfer limit variation - Tarong to South Pine (832) 275kV Line (Qld) - Voltage Control - 18 May 2016
The Tarong to South Pine (832) 275kV Line has been de-energised to manage voltages in the Qld region.
The following constraint set was invoked at 0310 hrs until further notice.
Q-TRSP_832
The constraint set contains equations with the following interconnectors on the LHS.
N-Q-MNSP1
Manager NEM Real Time Operations
Inter-Regional Transfer Limit Variation - Directlink - NSW Region 17 May 2016
Inter-Regional Transfer Limit Variation - Directlink - NSW Region - 17 May 2016
The planned outage of the DC2 pole of Directlink was scheduled to complete at 1700 hrs 18/05/16.
The outage has completed early
The following constraint set for this outage was revoked at 1455 hrs.
N-X_MBTE_2
The constraint set contains the following interconnector on the left hand side:
N-Q-MNSP1
See AEMO Network Outage Scheduler (NOS) for further details.
Manager NEM Real Time Operations