Market Notices

56170RECLASSIFY CONTINGENCY05/12/2016 04:41:34 AM

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 56164

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 0425 hrs.

Manager NEM Real Time Operations
56169POWER SYSTEM EVENTS05/12/2016 03:04:48 AM

Update: Simultaneous trip of Basslink and Farrell - Shefield No. 1 220 kV line- Tas region

AEMO ELECTRICITY MARKET NOTICE

Update: Simultaneous trip of Basslink and Farrell - Shefield No. 1 220 kV line - Tas region. 05-12-2016

Refer to MN 56165, 56155 and 47855

At 0043 hrs the Basslink and Farrell - Shefield No. 1 220 kV line tripped simultaneously. This simultaneous trip is currently declared a credible contingency event - Refer to MN 47855


Farrell - Sheffield No1 220 kV line returned to service at 0047 hrs
Basslink returned to service at 0245 hrs

Constraint set I-BL_ZERO revoked at 0245 hrs.


The outage constraint set contains the following interconnector onthe left hand side.

T-V_MNSP1

Manager NEM Real Time Operations
56168RECLASSIFY CONTINGENCY05/12/2016 02:07:51 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 56150

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 0205 hrs.

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

T-NIL_WCP_OPEN invoked


Manager NEM Real Time Operations
56167RECLASSIFY CONTINGENCY05/12/2016 02:03:16 AM

Cancellation of the 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

Cancellation of the 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.

Refer AEMO Electricity Market Notice 56149

There is no longer any lightning activity in the vicinity of the Farrell - John Butters 220 kV Line and the Farrell - Rosebery Tee Queenstown - Newton 110 kV Line.

AEMO has cancelled the reclassification of the simultaneous trip of those circuits as a credible contingency event at 0155 hrs.

Manager NEM Real Time Operations
56166RECLASSIFY CONTINGENCY05/12/2016 02:01:17 AM

Cancellation of the Reclassification of a Non-Credible Contingency Event: Farrell - Reece No. 1 and No. 2 220 kV Lines in Tasmania due to Lightning.

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 due to Lightning.

Refer AEMO Electricity Market Notice 56148

There is no longer any lightning activity in the vicinity of the 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 0155 hrs.

Constraint Sets F-T-FARE_N-2 revoked.

Manager NEM Real Time Operations
56165POWER SYSTEM EVENTS05/12/2016 02:26:02 AM

Update: Simultaneous trip of Basslink and Farrell - Shefield No. 1 220 kV line- Tas region

AEMO ELECTRICITY MARKET NOTICE

Update: Simultaneous trip of Basslink and Farrell - Shefield No. 1 220 kV line - Tas region. 05-12-2016

Refer to MN 56155 and 47855

At 0043 hrs the Basslink and Farrell - Shefield No. 1 220 kV line tripped simultaneously. This simultaneous trip is currently declared a credible contingency event - Refer to MN 47855

Simultaneously with this event AEMO has observed a reduction in the electrical demand in the TAS region of approximately 390 MW due to SPS action.

AEMO did not instruct load shedding.

Constraint set invoked:

I-BL_ZERO

The outage constraint set contains the following interconnector onthe left hand side.

T-V_MNSP1

Manager NEM Real Time Operations
56164RECLASSIFY CONTINGENCY05/12/2016 01:46:31 AM

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 0145 hrs 05/12/2016 until further notice.

Manager NEM Real Time Operations
56163PRICES UNCHANGED05/12/2016 01:17:47 AM

[EventId:201612050115_confirmed] Prices for interval 05-Dec-2016 01:15 are now confirmed

AEMO ELECTRICITY MARKET NOTICE

Issued by Australian Energy Market Operator Ltd at 0115 hrs on 5 December 2016

PRICES ARE NOW CONFIRMED for dispatch interval 05-Dec-2016 01:15.

In accordance with Market Notice 56157 AEMO has reviewed this dispatch interval and determined that:
- Manifestly Incorrect Inputs did not apply

Prices remain unchanged.


This is an AEMO autogenerated Market Notice.
56162PRICES UNCHANGED05/12/2016 01:17:04 AM

[EventId:201612050110_confirmed] Prices for interval 05-Dec-2016 01:10 are now confirmed

AEMO ELECTRICITY MARKET NOTICE

Issued by Australian Energy Market Operator Ltd at 0115 hrs on 5 December 2016

PRICES ARE NOW CONFIRMED for dispatch interval 05-Dec-2016 01:10.

In accordance with Market Notice 56156 AEMO has reviewed this dispatch interval and determined that:
- Manifestly Incorrect Inputs did not apply

Prices remain unchanged.


This is an AEMO autogenerated Market Notice.
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