Market Notices

54463RECLASSIFY CONTINGENCY12/07/2016 10:15:17 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 54462

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 2210 hrs.

Constraint Sets F-T-FARE_N-2 revoked.

Manager NEM Real Time Operations

54462RECLASSIFY CONTINGENCY12/07/2016 08:59:09 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 2100 hrs Tuesday, 12 July 2016 until further notice.

Constraint Set F-T-FARE_N-2 invoked.


54461RECLASSIFY CONTINGENCY12/07/2016 08:42:54 PM

Reclassification of a Non Credible Contingency Event - Farrell - Sheffield No.1 and No.2 220 kV transmission lines in Tasmania.

AEMO ELECTRICITY MARKET NOTICE

Reclassification of a Non Credible Contingency Event - Farrell - Sheffield No.1 and No.2 220 kV transmission lines in Tasmania.

Lightning is occurring near the Farrell - Sheffield No.1 and No.2 220 kV transmission 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 2035 hrs 12/07/16 until further notice.

Constraint Sets: F-T-FASH_N-2, F-T-FASH_N-2_HM_C and T-NIL_WCP_CLOSE invoked

These Constraint Sets contain equations with the following interconnector on the LHS.

T-V-MNSP1


Manager NEM Real Time Operations

54459RECLASSIFY CONTINGENCY12/07/2016 07:35:13 PM

Reclassification of a Non Credible Contingency Event: Farrell-John Butters 220kV line and the Farrell-Roseberry Tee Queenstown-Newton 110kV line in Tasmania.

AEMO ELECTRICITY MARKET NOTICE

Reclassification of a Non Credible Contingency Event: Farrell-John Butters 220kV line and the Farrell-Roseberry Tee Queenstown-Newton 110kV line in Tasmania.

Lightning is occurring near the Farrell-John Butters 220kV line and the Farrell-Rosebery Tee Queenstown-Newton 110kV 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 1930 hrs 12/07/16 until further notice.


Manager NEM Real Time Operations
54457SETTLEMENTS RESIDUE12/07/2016 07:00:23 PM

[EventId:201607121900_NRM_SA1_VIC1_stopped] NEGRES CONSTRAINT NRM_SA1_VIC1 ceased operating from 12 July 2016 19:00

AEMO ELECTRICITY MARKET NOTICE

Issued by Australian Energy Market Operator Ltd at 1900 hrs on 12 July 2016

CANCELLATION - ACTUAL NEGATIVE SETTLEMENT RESIDUES - SA to VIC - 12 July 2016.

Refer to market notice: 54455

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 1900 hrs on 12 July 2016.

This is an AEMO autogenerated Market Notice.
54456RECLASSIFY CONTINGENCY12/07/2016 06:12:07 PM

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.

AEMO ELECTRICITY MARKET NOTICE

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
54455SETTLEMENTS RESIDUE12/07/2016 06:00:29 PM

[EventId:201607121800_NRM_SA1_VIC1_started] NEGRES CONSTRAINT NRM_SA1_VIC1 started operating from 12 July 2016 18:00

AEMO ELECTRICITY MARKET NOTICE

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.
54454RECLASSIFY CONTINGENCY12/07/2016 05:32:49 PM

Reclassification of a Non-Credible Contingency Event: Norwood - Scottsdale - Derby 110 kV Line and Norwood - Scottsdale 110 kV Line in Tasmania due to Lightning.

AEMO ELECTRICITY 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.

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
54453RECLASSIFY CONTINGENCY12/07/2016 04:49:48 PM

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.

AEMO ELECTRICITY MARKET NOTICE

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
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