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Cancellation of a Non-credible Contingency Event: Murray to Guthega (97G) 132 kV Line in the Vic region
Refer AEMO Electricity Market Notice 66996
AEMO has been advised that the protection operated as per design for this event. Accordingly AEMO has cancelled the reclassification as it is a credible contingency event.
Event: The trip of the Murray to Guthega (97G) 132 kV Line at Murray end only.
Cancellation time: 1445 hrs 31/01/2019
Manager NEM Real Time Operations
Cancellation of a Non-Credible Contingency Event: Liapootah - Waddaman - Palmerston No. 1 and No. 2 220 kV Lines and Palmerston - Waddamana 110kV Line in Tasmania due to bushfire.
Cancellation of reclassification of a Non-Credible Contingency Event: Liapootah - Waddaman - Palmerston No. 1 and No. 2 220 kV Lines and Palmerston - Waddamana 110kV Line in Tasmania due to bushfire.
AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible. There is no longer bushfires in the vicinity of the following lines. Accordingly its classification has reverted to a non-credible contingency event.
Region: TAS
Lines: Liapootah - Waddamana - Palmerston No. 1 and No. 2 220 kV Lines and the Palmerston - Waddamana 110kV line
Cancellation time: 1420 hrs 31/01/2019 hrs
Constraint set(s) revoked:
T-LIPM_PMWA_N-3
I-TV_350
I-VT_050
T-WIND_100
Refer AEMO Electricity Market Notices 67021 and 67036
Manager NEM Real Time Operations
Reclassification of a Non-Credible Event: Trip of a single 220 kV transmission line ex Waddamana substation and the coincident reduction of 133 MW of industrial load in Tasmania
Refer AEMO ELECTRICITY MARKET NOTICE MN 66971
AEMO considers the simultaneous trip of the following circuits and load to now be more likely and reasonably possible. Accordingly AEMO has reclassified it as a credible contingency event.
Region: TAS1
Plant: A single 220 kV transmission line ex Waddamana substation and the coincident reduction of 133 MW of industrial load in Tasmania
Duration: 30/01/2019 11:45 until further notice
Manager NEM Real Time Operations
PDPASA - Update of the Forecast Lack Of Reserve Level 1 (LOR1) in the NSW Region on 31/01/2019
The Forecast LOR1 condition in the NSW region advised in AEMO Electricity Market Notice No. 67037 has been updated at 1130 hrs to the following:
From 1530 hrs 31/01/2019 to 1700 hrs 31/01/01/2019
The contingency forecast capacity reserve requirement is 1340 MW.
The minimum capacity reserve available is 1177 MW.
Manager NEM Real Time Operations
PDPASA - Update of the Forecast Lack Of Reserve Level 1 (LOR1) in the NSW Region on 31/01/2019
The Forecast LOR1 condition in the NSW region advised in AEMO Electricity Market Notice No. 66976 has been updated at 1030 hrs to the following:
From 1430 hrs 30/01/2019 to 1700 hrs 31/01/01/2019
The contingency forecast capacity reserve requirement is 1397 MW.
The minimum capacity reserve available is 1114 MW.
Manager NEM Real Time Operations
Update -Inter-regional transfer limit variation - Basslink - 31/01/2019
Refer AEMO Electricity Market Notice 67021
The Tasmania TNSP has provided updated limit advice on the power transfers for Basslink due to the reclassification advised in Market Notice 66969 (Liapootah - Waddamana - Palmerston No. 1 and No. 2 220 kV Lines and the Palmerston - Waddamana 110kV line).
Change is Basslink MW transfer VIC to TAS limit 50 MW
The following constraint sets have been invoked until further notice.
IT-LIPM_PMWA_N-3
I-TV_350
I-VT_050
T-WIND_100
The constraint sets have the following interconnectors on the LHS
T-V_MNSP1
Manager NEM Real Time Operations
Cancellation of a Non-Credible Contingency Event: Ross - Chalumbin No.857 275 kV line and Ross - Chalumbin No.858 275 kV line in QLD1 due to Lightning.
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: Ross - Chalumbin No.857 275 kV and Ross - Chalumbin No.858 275 kV
Cancellation time: 31/01/2019 07:24
Constraint set(s) revoked:
NONE
Refer AEMO Electricity Market Notice 67034
Auto-generated on behalf of Manager NEM Real Time Operations
Reclassification of a Non-Credible Contingency Event: Ross - Chalumbin No.857 275 kV line and Ross - Chalumbin No.858 275 kV line in QLD1 due to Lightning.
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: Ross - Chalumbin No.857 275 kV and Ross - Chalumbin No.858 275 kV
Duration: 31/01/2019 06:21 until further notice
Constraint set(s) invoked:
NONE
Auto-generated on behalf of Manager NEM Real Time Operations
[EventId:201901310520_confirmed] Prices for interval 31-Jan-2019 05:20 are now confirmed
Issued by Australian Energy Market Operator Ltd at 0545 hrs on 31 January 2019
PRICES ARE NOW CONFIRMED for dispatch interval 31-Jan-2019 05:20.
In accordance with Market Notice 67022 AEMO has reviewed this dispatch interval and determined that:
- Manifestly Incorrect Inputs did not apply
Prices remain unchanged.
This is an AEMO autogenerated Market Notice.