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54634RECLASSIFY CONTINGENCY31/07/2016 04:58:49 AM
Reclassification of a Non-Credible Contingency Event: Farrell - Sheffield No. 1 and No. 2 220 kV Lines in Tasmania due to Lightning.
AEMO ELECTRICITY MARKET NOTICE
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 0500 hrs 31 Jul 2016 until further notice.
Constraint Sets invoked :
F-T-FASH_N-2 invoked
F-FASH_N-2_HM_C
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 - 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 0500 hrs 31 Jul 2016 until further notice.
Constraint Sets invoked :
F-T-FASH_N-2 invoked
F-FASH_N-2_HM_C
These Constraint Sets contain equations with the following interconnector on the LHS.
T-V-MNSP1
Manager NEM Real Time Operations
54633RECLASSIFY CONTINGENCY31/07/2016 04:12:22 AM
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.
AEMO ELECTRICITY MARKET NOTICE
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 0410 hrs 31/07/2016 until further notice.
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.
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 0410 hrs 31/07/2016 until further notice.
Manager NEM Real Time Operations
54615RECLASSIFY CONTINGENCY25/07/2016 07:54:27 PM
Cancellation of the reclassification of a Non-Credible Contingency Event: Rowville-Yallourn No 5 & No. 6 220kV Lines in Victoria due to lightning.
AEMO ELECTRICITY MARKET NOTICE
Cancellation of the reclassification of a Non-Credible Contingency Event: Rowville-Yallourn No 5 & No. 6 220kV Lines in Victoria due to lightning.
Refer AEMO Electricity Market Notice 54614
There is no longer any lightning activity in the vicinity of the Rowville-Yallourn No 5 & No. 6 220kV lines.
AEMO has cancelled the reclassification of the simultaneous trip of those circuits as a credible contingency event at 1950 hrs.
Constraint Set V-ROYP56_R_N-2 revoked.
Manager NEM Real Time Operations
Cancellation of the reclassification of a Non-Credible Contingency Event: Rowville-Yallourn No 5 & No. 6 220kV Lines in Victoria due to lightning.
Refer AEMO Electricity Market Notice 54614
There is no longer any lightning activity in the vicinity of the Rowville-Yallourn No 5 & No. 6 220kV lines.
AEMO has cancelled the reclassification of the simultaneous trip of those circuits as a credible contingency event at 1950 hrs.
Constraint Set V-ROYP56_R_N-2 revoked.
Manager NEM Real Time Operations
54614RECLASSIFY CONTINGENCY25/07/2016 06:58:12 PM
Reclassification of a Non Credible Contingency Event: Rowville-Yallourn No 5 & No. 6 220kV Lines in Victoria due to Lightning.
AEMO ELECTRICITY MARKET NOTICE
Reclassification of a Non Credible Contingency Event: Rowville-Yallourn No 5 & No. 6 220kV Lines in Victoria due to Lightning.
Lightning is occurring near the Rowville-Yallourn No 5 & No. 6 220kV 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 1850 hrs 25/07/16 until further notice.
Constraint Set V-ROYP56_R_N-2 invoked.
Manager NEM Real Time Operations
Reclassification of a Non Credible Contingency Event: Rowville-Yallourn No 5 & No. 6 220kV Lines in Victoria due to Lightning.
Lightning is occurring near the Rowville-Yallourn No 5 & No. 6 220kV 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 1850 hrs 25/07/16 until further notice.
Constraint Set V-ROYP56_R_N-2 invoked.
Manager NEM Real Time Operations
54610RECLASSIFY CONTINGENCY25/07/2016 01:21:06 PM
Non-credible contingency event - SA region - 25 July 2016
AEMO ELECTRICITY MARKET NOTICE
Non-credible contingency event - SA region - 25 July 2016
At 1223 hrs the Waterloo - Hummocks 132 kV line tripped at the Hummocks end only.
AEMO did not instruct load shedding.
AEMO has not been advised of any disconnection of bulk electrical load.
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.
AEMO will not reclassify this event as a credible contingency event.
Manager NEM Real Time Operations
Non-credible contingency event - SA region - 25 July 2016
At 1223 hrs the Waterloo - Hummocks 132 kV line tripped at the Hummocks end only.
AEMO did not instruct load shedding.
AEMO has not been advised of any disconnection of bulk electrical load.
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.
AEMO will not reclassify this event as a credible contingency event.
Manager NEM Real Time Operations
54606RECLASSIFY CONTINGENCY23/07/2016 03:27:53 PM
Cancellation of the reclassification of a Non-Credible Contingency Event: Rowville-Yallourn No 5 & No. 6 220kV Lines in Victoria due to lightning.
AEMO ELECTRICITY MARKET NOTICE
Cancellation of the reclassification of a Non-Credible Contingency Event: Rowville-Yallourn No 5 & No. 6 220kV Lines in Victoria due to lightning.
Refer AEMO Electricity Market Notice 54605
There is no longer any lightning activity in the vicinity of the Rowville-Yallourn No 5 & No. 6 220kV lines.
AEMO has cancelled the reclassification of the simultaneous trip of those circuits as a credible contingency event at 1530 hrs.
Constraint Set V-ROYP56_R_N-2 revoked.
Manager NEM Real Time Operations
Cancellation of the reclassification of a Non-Credible Contingency Event: Rowville-Yallourn No 5 & No. 6 220kV Lines in Victoria due to lightning.
Refer AEMO Electricity Market Notice 54605
There is no longer any lightning activity in the vicinity of the Rowville-Yallourn No 5 & No. 6 220kV lines.
AEMO has cancelled the reclassification of the simultaneous trip of those circuits as a credible contingency event at 1530 hrs.
Constraint Set V-ROYP56_R_N-2 revoked.
Manager NEM Real Time Operations
54605RECLASSIFY CONTINGENCY23/07/2016 02:52:36 PM
Reclassification of a Non Credible Contingency Event: Rowville-Yallourn No 5 & No. 6 220kV Lines in Victoria due to Lightning.
AEMO ELECTRICITY MARKET NOTICE
Reclassification of a Non Credible Contingency Event: Rowville-Yallourn No 5 & No. 6 220kV Lines in Victoria due to Lightning.
Lightning is occurring near the Rowville-Yallourn No 5 & No. 6 220kV 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 1450 hrs 23/07/16 until further notice.
Constraint Set V-ROYP56_R_N-2 invoked.
Manager NEM Real Time Operations
Reclassification of a Non Credible Contingency Event: Rowville-Yallourn No 5 & No. 6 220kV Lines in Victoria due to Lightning.
Lightning is occurring near the Rowville-Yallourn No 5 & No. 6 220kV 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 1450 hrs 23/07/16 until further notice.
Constraint Set V-ROYP56_R_N-2 invoked.
Manager NEM Real Time Operations
54603RECLASSIFY CONTINGENCY23/07/2016 12:45:02 PM
Cancellation of the reclassification of a non-credible contingency event: Farrell- Reece No.1 and No.2 220 kV lines in Tasmania.
AEMO ELECTRICITY MARKET NOTICE
Cancellation of the reclassification of a non-credible contingency event: Farrell- Reece No.1 and No.2 220 kV lines in Tasmania.
Refer AEMO Electricity Market Notice 54602
There is no longer any lightning activity has ceased in the vicinity of the Farrell- Reece No.1 and No.2 220 kV lines.
AEMO has cancelled the reclassification of the simultaneous trip of those circuits as a credible contingency event at 1245 hrs.
Constraint Sets F-T-FARE_N-2 revoked.
Manager NEM Real Time Operations
Cancellation of the reclassification of a non-credible contingency event: Farrell- Reece No.1 and No.2 220 kV lines in Tasmania.
Refer AEMO Electricity Market Notice 54602
There is no longer any lightning activity has ceased in the vicinity of the Farrell- Reece No.1 and No.2 220 kV lines.
AEMO has cancelled the reclassification of the simultaneous trip of those circuits as a credible contingency event at 1245 hrs.
Constraint Sets F-T-FARE_N-2 revoked.
Manager NEM Real Time Operations
54602RECLASSIFY CONTINGENCY23/07/2016 12:15:15 PM
Reclassification of a Non Credible Contingency Event: Farrell - Reece No.1 and No.2 220 kV lines in Tasmania.
AEMO ELECTRICITY MARKET NOTICE
Reclassification of a Non Credible Contingency Event: Farrell - Reece No.1 and No.2 220 kV lines in Tasmania.
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 1210 hrs Saturday, 23 July 2016 until further notice.
Constraint Set F-T-FARE_N-2 invoked.
Reclassification of a Non Credible Contingency Event: Farrell - Reece No.1 and No.2 220 kV lines in Tasmania.
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 1210 hrs Saturday, 23 July 2016 until further notice.
Constraint Set F-T-FARE_N-2 invoked.