Market Notices

55484RECLASSIFY CONTINGENCY28/10/2016 03:01:17 PM

Reclassification of a Non-Credible Contingency Event: Tarong - Chinchilla 7183 and 7168 132 kV Lines in Queensland due to Lightning.

AEMO ELECTRICITY MARKET NOTICE

Reclassification of a Non-Credible Contingency Event: Tarong - Chinchilla 7183 and 7168 132 kV Lines in Queensland due to Lightning.
Lightning is occurring near the Tarong - Chinchilla 7183 and 7168 132 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 1455 hrs 28/10/16 until further notice.

Manager NEM Real Time Operations
55482RECLASSIFY CONTINGENCY27/10/2016 11:50:26 PM

Cancellation of the reclassification of a Non Credible Contingency Event: Tarong - Chinchilla 7183 and 7168 132 kV lines in Queensland.

AEMO ELECTRICITY MARKET NOTICE

Cancellation of the reclassification of a Non Credible Contingency Event: Tarong - Chinchilla 7183 and 7168 132 kV lines in Queensland.

Refer AEMO Electricity Market Notice 55481

There is no longer any lightning activity in the vicinity of the Tarong - Chinchilla 7183 and 7168 132 kV lines.

AEMO has cancelled the reclassification of the simultaneous trip of those circuits as a credible contingency event at 2210 hrs Thursday, 27 October 2016.


Manager NEM Real Time Operations
55481RECLASSIFY CONTINGENCY27/10/2016 07:38:49 PM

Reclassification of a Non Credible Contingency Event: Tarong - Chinchilla 7183 and 7168 132 kV lines in Queensland.

AEMO ELECTRICITY MARKET NOTICE

Reclassification of a Non Credible Contingency Event: Tarong - Chinchilla 7183 and 7168 132 kV lines in Queensland.

Lightning is occurring near the Tarong - Chinchilla 7183 and 7168 132 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 1935 hrs Thursday, 27 October 2016 until further notice.


Manager NEM Real Time Operations
55455RECLASSIFY CONTINGENCY21/10/2016 08:58:13 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 55454

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 2100 hrs.

Constraint Set V-DDGN_N-2 revoked.


Manager NEM Real Time Operations
55454RECLASSIFY CONTINGENCY21/10/2016 04:55:16 PM

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

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 1655 hrs 21 10 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
55451RECLASSIFY CONTINGENCY21/10/2016 03:25:52 AM

Cancellation of the reclassification of a Non Credible Contingency Event: Farrell - Sheffield 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 - Sheffield No.1 and No.2 220 kV lines in Tasmania.

Refer AEMO Electricity Market Notice 55449

There is no longer any lightning activity in the vicinity of the Farrell - Sheffield 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 0330 hrs.

Constraint Sets F-T-FASH_N-2, F-T-FASH_N-2_HM_C and T-NIL_WCP_CLOSE revoked.


Manager NEM Real Time Operations

55449RECLASSIFY CONTINGENCY21/10/2016 01:38:00 AM

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 0140 hrs 21/10/16 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
55448RECLASSIFY CONTINGENCY20/10/2016 11:03:20 PM

Cancellation - Reclassification of a Non-Credible Contingency Event: Brinkworth to Templers West, Davenport to Mt Lock and Davenport to Belalie 275 kV lines in the South Australia region due to the severe weather and damaging winds that may exceed the rat

AEMO ELECTRICITY MARKET NOTICE

Cancellation - Reclassification of a Non-Credible Contingency Event: Brinkworth to Templers West, Davenport to Mt Lock and Davenport to Belalie 275 kV lines in the South Australia region due to the severe weather and damaging winds that may exceed the rating of the temporary structures on the above lines.

Refer to AEMO Electricity Market Notice 55439 and 55444

There is no longer severe weather and damaging winds in the area of the reclassified contingency.

AEMO has cancelled the reclassification for the simultaneous trip of the Brinkworth to Templers West, Davenport to Mt Lock and Davenport to Belalie 275 kV Transmission lines as a credible contingency from 2305 hrs Thursday, 20 October 2016.

Manager NEM Real Time Operations
55447RECLASSIFY CONTINGENCY20/10/2016 10:35:16 PM

Cancellation of the reclassification of a Non Credible Contingency Event: Tarong - Chinchilla 7183 and 7168 132 kV lines in Queensland.

AEMO ELECTRICITY MARKET NOTICE

Cancellation of the reclassification of a Non Credible Contingency Event: Tarong - Chinchilla 7183 and 7168 132 kV lines in Queensland.

Refer AEMO Electricity Market Notice 55435

There is no longer any lightning activity in the vicinity of the Tarong - Chinchilla 7183 and 7168 132 kV lines.

AEMO has cancelled the reclassification of the simultaneous trip of those circuits as a credible contingency event at 2150 hrs Thursday, 20 October 2016.


Manager NEM Real Time Operations

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