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Cancellation of the Reclassification of a Non-Credible Contingency Event: Norwood - Scottsdale - Derby 110 kV Line and Norwood - Scottsdale 110 kV Line in Tasmania due to Lightning.
Cancellation of the Reclassification of a Non-Credible Contingency Event: Norwood - Scottsdale - Derby 110 kV Line and Norwood - Scottsdale 110 kV Line in Tasmania due to Lightning.
Refer AEMO Electricity Market Notice 54454
There is no longer any lightning activity in the vicinity of the Norwood - Scottsdale - Derby 110 kV Line and Norwood - Scottsdale 110 kV Line.
AEMO has cancelled the reclassification of the simultaneous trip of those circuits as a credible contingency event at 1810 hrs.
Manager NEM Real Time Operations
[EventId:201607121800_NRM_SA1_VIC1_started] NEGRES CONSTRAINT NRM_SA1_VIC1 started operating from 12 July 2016 18:00
Issued by Australian Energy Market Operator Ltd at 1800 hrs on 12 July 2016
ACTUAL NEGATIVE SETTLEMENT RESIDUES - SA to VIC - 12 July 2016.
Electricity Market outcomes have resulted in the accumulation of negative settlement residues that have exceeded the allowable negative residue threshold for the SA to VIC directional interconnector.
The negative residue constraint set NRM_SA1_VIC1 commenced operating from 1800 hrs on 12 July 2016.
This constraint set contains an equation with the following interconnectors on the LHS:
V-S-MNSP1
V-SA
The RHS of the constraint equation may be adjusted to manage residues.
This is an AEMO autogenerated Market Notice.
Reclassification of a Non-Credible Contingency Event: Norwood - Scottsdale - Derby 110 kV Line and Norwood - Scottsdale 110 kV Line in Tasmania due to Lightning.
Reclassification of a Non-Credible Contingency Event: Norwood - Scottsdale - Derby 110 kV Line and Norwood - Scottsdale 110 kV Line in Tasmania due to Lightning.
Lightning is occurring near the Norwood - Scottsdale - Derby 110 kV Line and Norwood - Scottsdale 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 1730 hrs 12 July 2016 until further notice.
Manager NEM Real Time Operations
Cancellation of the Reclassification of a Non-Credible Contingency Event: Dederang - Glenrowan No.1 and No.3 220 kV Lines in Victoria due to Lightning.
Cancellation of the Reclassification of a Non-Credible Contingency Event: Dederang - Glenrowan No.1 and No.3 220 kV Lines in Victoria due to Lightning.
Refer AEMO Electricity Market Notice 54441
There is no longer any lightning activity in the vicinity of the Dederang - Glenrowan No.1 and No.3 220 kV Lines.
AEMO has cancelled the reclassification of the simultaneous trip of those circuits as a credible contingency event at 1650 hrs.
Constraint Set V-DDGN_N-2 revoked.
Manager NEM Real Time Operations
[EventId:201607121630_NRM_SA1_VIC1_stopped] NEGRES CONSTRAINT NRM_SA1_VIC1 ceased operating from 12 July 2016 16:30
Issued by Australian Energy Market Operator Ltd at 1630 hrs on 12 July 2016
CANCELLATION - ACTUAL NEGATIVE SETTLEMENT RESIDUES - SA to VIC - 12 July 2016.
Refer to market notice: 54442
AEMO has ceased taking action to minimize the further accumulation of negative settlement residues on the SA to VIC directional interconnector.
The negative residue constraint NRM_SA1_VIC1 ceased operating at 1630 hrs on 12 July 2016.
This is an AEMO autogenerated Market Notice.
[EventId:201607121505_NRM_SA1_VIC1_started] NEGRES CONSTRAINT NRM_SA1_VIC1 started operating from 12 July 2016 15:05
Issued by Australian Energy Market Operator Ltd at 1505 hrs on 12 July 2016
ACTUAL NEGATIVE SETTLEMENT RESIDUES - SA to VIC - 12 July 2016.
Electricity Market outcomes have resulted in the accumulation of negative settlement residues that have exceeded the allowable negative residue threshold for the SA to VIC directional interconnector.
The negative residue constraint set NRM_SA1_VIC1 commenced operating from 1505 hrs on 12 July 2016.
This constraint set contains an equation with the following interconnectors on the LHS:
V-S-MNSP1
V-SA
The RHS of the constraint equation may be adjusted to manage residues.
This is an AEMO autogenerated Market Notice.
Reclassification of a Non-Credible Contingency Event: Dederang - Glenrowan No. 1 and No. 3 220 kV Lines in Victoria due to Lightning.
Reclassification of a Non-Credible Contingency Event: Dederang - Glenrowan No. 1 and No. 3 220 kV Lines in Victoria due to Lightning.
Lightning is occurring near the Dederang - Glenrowan No. 1 and No. 3 220 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 1450hrs 12 July 2016 until further notice.
Constraint Set V-DDGN_N-2 invoked.
This Constraint Set contains equations with the following interconnectors on the LHS.
V-S-MNSP1
V-SA
VIC1-NSW1
Manager NEM Real Time Operations
Cancellation of the Reclassification of a Non-Credible Contingency Event: Dederang - Glenrowan No.1 and No.3 220 kV Lines in Victoria due to Lightning.
Cancellation of the Reclassification of a Non-Credible Contingency Event: Dederang - Glenrowan No.1 and No.3 220 kV Lines in Victoria due to Lightning.
Refer AEMO Electricity Market Notice 54436
There is no longer any lightning activity in the vicinity of the Dederang - Glenrowan No.1 and No.3 220 kV Lines.
AEMO has cancelled the reclassification of the simultaneous trip of those circuits as a credible contingency event at 1415 hrs.
Constraint Set V-DDGN_N-2 revoked.
Manager NEM Real Time Operations
Reclassification of a Non-Credible Contingency Event: Dederang - Glenrowan No. 1 and No. 3 220 kV Lines in Victoria due to Lightning.
Reclassification of a Non-Credible Contingency Event: Dederang - Glenrowan No. 1 and No. 3 220 kV Lines in Victoria due to Lightning.
Lightning is occurring near the Dederang - Glenrowan No. 1 and No. 3 220 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 1330 hrs 12 July 2016 until further notice.
Constraint Set V-DDGN_N-2 invoked.
This Constraint Set contains equations with the following interconnectors on the LHS.
V-S-MNSP1
V-SA
VIC1-NSW1
Manager NEM Real Time Operations