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        • 66483 20 Jan 2019 18:49 RECLASSIFY CONTINGENCY
        • Cancellation of a Non-Credible Contingency Event: Bulli Creek - Dumaresq 8L 330KV line and Bulli Creek - Dumaresq 8M 330KV line in QLD1 due to Lightning.

          AEMO ELECTRICITY MARKET NOTICE

          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: Bulli Creek - Dumaresq 8L 330KV and Bulli Creek - Dumaresq 8M 330KV

          Cancellation time: 20/01/2019 18:49

          Constraint set(s) revoked:
          I-QNI_ONE_PHASE_N-2 Constraint set contains the following interconnector(s) on the left hand side:
          NSW1-QLD1


          Refer AEMO Electricity Market Notice 66482

          Auto-generated on behalf of Manager NEM Real Time Operations

        • 66482 20 Jan 2019 13:46 RECLASSIFY CONTINGENCY
        • Reclassification of a Non-Credible Contingency Event: Bulli Creek - Dumaresq 8L 330KV line and Bulli Creek - Dumaresq 8M 330KV line in QLD1 due to Lightning.

          AEMO ELECTRICITY MARKET NOTICE

          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: Bulli Creek - Dumaresq 8L 330KV and Bulli Creek - Dumaresq 8M 330KV

          Duration: 20/01/2019 13:46 until further notice

          Constraint set(s) invoked:
          I-QNI_ONE_PHASE_N-2 Constraint set contains the following interconnector(s) on the left hand side:
          NSW1-QLD1


          Auto-generated on behalf of Manager NEM Real Time Operations

        • 66481 20 Jan 2019 12:05 NON-CONFORMANCE
        • NON-CONFORMANCE Region SA1 Sunday, 20 January 2019

          AEMO ELECTRICITY MARKET NOTICE

          NON-CONFORMANCE SA1 Region Sunday, 20 January 2019

          AEMO declared a schedule generating unit non-conforming

          Unit: PPCCGT
          Duration: 20/01/2019 12:00 to 20/01/2019 12:05
          Amount: -42 MW
          Constraint: NC-S_PPCCGT

          Auto-generated on behalf of Manager NEM Real Time Operations

        • 66480 19 Jan 2019 23:04 RECLASSIFY CONTINGENCY
        • Cancellation of a Non-Credible Contingency Event: Bulli Creek - Dumaresq 8L 330KV line and Bulli Creek - Dumaresq 8M 330KV line in QLD1 due to Lightning.

          AEMO ELECTRICITY MARKET NOTICE

          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: Bulli Creek - Dumaresq 8L 330KV and Bulli Creek - Dumaresq 8M 330KV

          Cancellation time: 19/01/2019 23:04

          Constraint set(s) revoked:
          I-QNI_ONE_PHASE_N-2 Constraint set contains the following interconnector(s) on the left hand side:
          NSW1-QLD1


          Refer AEMO Electricity Market Notice 66474

          Auto-generated on behalf of Manager NEM Real Time Operations

        • 66479 19 Jan 2019 22:18 POWER SYSTEM EVENTS
        • Update - Non-credible contingency event - NSW region - 19/01/2019


          AEMO ELECTRICITY MARKET NOTICE.

          Update - Non-credible contingency event - NSW region - 19/01/2019

          Refer MN 66477 and 66478

          At 1938 hrs the Armidale - Tamworth 85 330kV Line tripped at Tamworth end only and the Armidale - Coffs Harbour 96C 132 kV Line tripped.

          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 therefore cancels the reclassification of this event as a credible contingency event.

          Manager NEM Real Time Operations

        • 66478 19 Jan 2019 20:30 POWER SYSTEM EVENTS
        • Update - Non-credible contingency event - NSW Region - 19 Jan 2019


          AEMO ELECTRICITY MARKET NOTICE.

          Update - Non-credible contingency event - NSW Region - 19 Jan 2019

          Refer MN 66477

          At 1938 hrs the Armidale - Tamworth 85 330kV Line tripped at Tamworth end only and the Armidale - Coffs Harbour 96C 132 kV Line tripped.

          The cause of this non credible contingency event is not known at this stage.

          AEMO is not satisfied that this non credible event is unlikely to re-occur.

          AEMO has therefore reclassified this event as a credible contingency event until further notice.

          Manager NEM Real Time Operations

        • 66477 19 Jan 2019 19:55 POWER SYSTEM EVENTS
        • Non-Credible Contingency Event - NSW Region - 19 Jan 2019

          AEMO ELECTRICITY MARKET NOTICE.

          Non-Credible Contingency Event - NSW Region - 19 Jan 2019

          At 1938 hrs the Armidale - Tamworth 85 330kV Line tripped at Tamworth end only and the Armidale - Coffs Harbour 96C 132 kV Line tripped.

          Both Lines auto reclosed sucessfully.

          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 is not known at this stage.

          Manager NEM Real Time Operations

        • 66476 19 Jan 2019 19:26 RECLASSIFY CONTINGENCY
        • Reclassification of a Non-Credible Contingency Event: Murray - Lower Tumut 65 and Murray - Upper Tumut 66 330 kV Lines in NSW due to Bushfire

          AEMO ELECTRICITY MARKET NOTICE.

          Reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Bushfire.

          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: NSW

          Lines: Murray - Lower Tumut 65 330 kV Line and Murray - Upper Tumut 66 330 kV Line
          Duration: 1915hrs 19/01/2019 until further notice

          Constraint set(s) invoked:
          NIL

          Manager NEM Real Time Operations

        • 66475 19 Jan 2019 17:05 NON-CONFORMANCE
        • NON-CONFORMANCE Region QLD1 Saturday, 19 January 2019

          AEMO ELECTRICITY MARKET NOTICE

          NON-CONFORMANCE QLD1 Region Saturday, 19 January 2019

          AEMO declared a schedule generating unit non-conforming

          Unit: GSTONE1
          Duration: 19/01/2019 16:55 to 19/01/2019 17:05
          Amount: -34 MW
          Constraint: NC-Q_GSTONE1

          Auto-generated on behalf of Manager NEM Real Time Operations