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65110POWER SYSTEM EVENTS24/10/2018 12:22:17 PM
Non-credible contingency event - QLD region - 24/10/2018
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - QLD region - 24/10/2018
At 1151 hrs the Bouldercombe - Rockhampton (7107 and 7108) 132 kV lines tripped.
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 has been identified and AEMO is satisfied that another occurrence of this event is unlikely under the current circumstances.
AEMO will not reclassify this event as a credible contingency event.
Manager NEM Real Time Operations
Non-credible contingency event - QLD region - 24/10/2018
At 1151 hrs the Bouldercombe - Rockhampton (7107 and 7108) 132 kV lines tripped.
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 has been identified and AEMO is satisfied that another occurrence of this event is unlikely under the current circumstances.
AEMO will not reclassify this event as a credible contingency event.
Manager NEM Real Time Operations
65094POWER SYSTEM EVENTS23/10/2018 11:33:58 AM
Update - Non-credible contingency event - QLD region - 23/10/2018
AEMO ELECTRICITY MARKET NOTICE
Update - Non-credible contingency event - QLD region - 23/10/2018
Update to MN 65091
At 1114 hrs the 275 kV Broadsound to Nebo Feeder 8831 was returned to service.
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 will not reclassify this event as a credible contingency event.
Manager NEM Real Time Operations
Update - Non-credible contingency event - QLD region - 23/10/2018
Update to MN 65091
At 1114 hrs the 275 kV Broadsound to Nebo Feeder 8831 was returned to service.
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 will not reclassify this event as a credible contingency event.
Manager NEM Real Time Operations
65091POWER SYSTEM EVENTS23/10/2018 06:43:23 AM
Non-credible contingency event - QLD region - 23/10/2018
AEMO ELECTRICITY MARKET NOTICE
Non-credible contingency event - QLD region - 23/10/2018
At 6:18 hrs the Broadsound - Nebo 275 kV 8831 Feeder tripped at the Broadsound end only.
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
Non-credible contingency event - QLD region - 23/10/2018
At 6:18 hrs the Broadsound - Nebo 275 kV 8831 Feeder tripped at the Broadsound end only.
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
64761POWER SYSTEM EVENTS09/10/2018 07:21:00 AM
Non-credible contingency event - Vic region - 09/10/2018
AEMO ELECTRICITY MARKET NOTICE
Non-credible contingency event - Vic region - 09/10/2018
Refer AEMO Electricity Market Notice 64760
At 0647 hrs the APD No. 3 500kV bus tripped.
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 has been identified and AEMO is satisfied that another occurrence of this event is unlikely under the current circumstances.
AEMO will not reclassify this event as a credible contingency event.
Manager NEM Real Time Operations
Non-credible contingency event - Vic region - 09/10/2018
Refer AEMO Electricity Market Notice 64760
At 0647 hrs the APD No. 3 500kV bus tripped.
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 has been identified and AEMO is satisfied that another occurrence of this event is unlikely under the current circumstances.
AEMO will not reclassify this event as a credible contingency event.
Manager NEM Real Time Operations
64331POWER SYSTEM EVENTS23/09/2018 04:54:36 PM
Non-credible contingency event - Qld region - 23 Sep 2018
AEMO ELECTRICITY MARKET NOTICE
Non-credible contingency event - Qld region - 23 Sep 2018
At 1618 hrs the NEBO No1 275 kV Bus tripped.
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 has been identified and AEMO is satisfied that another occurrence of this event is unlikely under the current circumstances.
AEMO will not reclassify this event as a credible contingency event.
At 1650 hrs NEBO No1 275 kV Bus restored to service.
Manager NEM Real Time Operations
Non-credible contingency event - Qld region - 23 Sep 2018
At 1618 hrs the NEBO No1 275 kV Bus tripped.
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 has been identified and AEMO is satisfied that another occurrence of this event is unlikely under the current circumstances.
AEMO will not reclassify this event as a credible contingency event.
At 1650 hrs NEBO No1 275 kV Bus restored to service.
Manager NEM Real Time Operations
64072POWER SYSTEM EVENTS02/09/2018 04:27:10 PM
Update - Non-credible contingency event - Qld region - 02/09/2018
AEMO ELECTRICITY MARKET NOTICE
Update - Non-credible contingency event - Qld region - 02/09/2018
Update to MN 64069.
At 1622 hrs the Calvale - Gladstone Sth (7104) and Calvale - Gladstone Sth (7105) feeders were returned to service.
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 will not reclassify this event as a credible contingency event.
Manager NEM Real Time Operations
Update - Non-credible contingency event - Qld region - 02/09/2018
Update to MN 64069.
At 1622 hrs the Calvale - Gladstone Sth (7104) and Calvale - Gladstone Sth (7105) feeders were returned to service.
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 will not reclassify this event as a credible contingency event.
Manager NEM Real Time Operations
64069POWER SYSTEM EVENTS02/09/2018 12:25:09 PM
Non-credible contingency event - Qld Region - 2 Sept 2018
AEMO ELECTRICITY MARKET NOTICE
Non-credible contingency event - Qld Region - 2 Sept 2018
At 1144 hrs the Calvale - Gladstone Sth (7104) and the Calvale - Gladstone Sth (7105) tripped.
Note that these two feeders are normally offloaded at either end
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
Non-credible contingency event - Qld Region - 2 Sept 2018
At 1144 hrs the Calvale - Gladstone Sth (7104) and the Calvale - Gladstone Sth (7105) tripped.
Note that these two feeders are normally offloaded at either end
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
64003POWER SYSTEM EVENTS25/08/2018 06:22:00 PM
Update - POWER SYSTEM EVENT 25/08/2018
AEMO ELECTRICITY MARKET NOTICE.
Update - POWER SYSTEM EVENT 25/08/2018
Refer to AEMO Electricity Market Notice 63985 and 64001
AEMO advises this update on the following circumstance(s) with respect to the power system.
At 1312 hrs 25/08/2018
Queensland separated from NSW region and South Australia separated from Victoria region.
South Australia operating in an Island. Queensland region operating in an island. NSW and Victoria remain connected.
The following transmission lines tripped out of service.
8L and 8M Dumaresq to Bulli 330 kV Transmission line tripped out of service. Both lines in-service by 1433 hrs.
86 Armidale -Tamworth 330 kV transmission line tripped. 86 Line returned to service 1516 hrs.
At 1337 hrs South Australia region synchronised with Victoria region.
At 1420 hrs Queensland region synchronised and NSW.
Indication of volume of load shed and in the regions. NSW shed 724 MW. Victoria shed 280 MW. Tasmania shed 80 MW.
Load in Victoria restored 1400 hrs
600 MW Industrial Load in the NSW region restored 1410 hrs. Customer load 124 MW all restored by 1528 hrs.
Load in Tasmania restored 1342 hrs.
Approximate total amount of generation tripped in each region - Nil generation observed to trip.
AEMO has issued this Market Notice in accordance with the NER Cl 4.8.3.
Manager NEM Real Time Operations
Update - POWER SYSTEM EVENT 25/08/2018
Refer to AEMO Electricity Market Notice 63985 and 64001
AEMO advises this update on the following circumstance(s) with respect to the power system.
At 1312 hrs 25/08/2018
Queensland separated from NSW region and South Australia separated from Victoria region.
South Australia operating in an Island. Queensland region operating in an island. NSW and Victoria remain connected.
The following transmission lines tripped out of service.
8L and 8M Dumaresq to Bulli 330 kV Transmission line tripped out of service. Both lines in-service by 1433 hrs.
86 Armidale -Tamworth 330 kV transmission line tripped. 86 Line returned to service 1516 hrs.
At 1337 hrs South Australia region synchronised with Victoria region.
At 1420 hrs Queensland region synchronised and NSW.
Indication of volume of load shed and in the regions. NSW shed 724 MW. Victoria shed 280 MW. Tasmania shed 80 MW.
Load in Victoria restored 1400 hrs
600 MW Industrial Load in the NSW region restored 1410 hrs. Customer load 124 MW all restored by 1528 hrs.
Load in Tasmania restored 1342 hrs.
Approximate total amount of generation tripped in each region - Nil generation observed to trip.
AEMO has issued this Market Notice in accordance with the NER Cl 4.8.3.
Manager NEM Real Time Operations
64001POWER SYSTEM EVENTS25/08/2018 02:51:47 PM
Update - POWER SYSTEM EVENT 25/08/2018
AEMO ELECTRICITY MARKET NOTICE.
Update - POWER SYSTEM EVENT 25/08/2018
Refer to AEMO Electricity Market Notice 63985
AEMO has become aware of the following circumstance(s) with respect to the power system.
At 1312 hrs 25/08/2018
Queensland separated from NSW region and South Australia separated from Victoria region.
South Australia operating in an Island. Queensland region operating in an island. NSW and Victoria remain connected.
The following transmission lines tripped out of service. All regions reconnected at 1420 hrs
8L and 8M Dumaresq to Bulli 330 kV Transmission line tripped out of service. Both lines in-service by 1433 hrs.
86 Armidale -Tamworth 330 kV transmission line tripped out of service. 86 Line remains out of service.
Indication of volume of load shed and in regions. NSW shed 800 MW. Victoria shed 280 MW. Tasmania shed 80 MW.
Load in Victoria restored 1400 hrs
Industrial Load in the NSW region restored 1410 hrs. 1340 hrs other customer load permission to restore.
Load in Tasmania restored 1342 hrs.
Approximate total amount of generation tripped in each region. Nil generation observed to trip.
At 1337 hrs South Australia region synchronised with Victoria region.
At 1420 hrs Queensland region synchronised and NSW.
AEMO has issued this Market Notice in accordance with the NER Cl 4.8.3.
Manager NEM Real Time Operations
Update - POWER SYSTEM EVENT 25/08/2018
Refer to AEMO Electricity Market Notice 63985
AEMO has become aware of the following circumstance(s) with respect to the power system.
At 1312 hrs 25/08/2018
Queensland separated from NSW region and South Australia separated from Victoria region.
South Australia operating in an Island. Queensland region operating in an island. NSW and Victoria remain connected.
The following transmission lines tripped out of service. All regions reconnected at 1420 hrs
8L and 8M Dumaresq to Bulli 330 kV Transmission line tripped out of service. Both lines in-service by 1433 hrs.
86 Armidale -Tamworth 330 kV transmission line tripped out of service. 86 Line remains out of service.
Indication of volume of load shed and in regions. NSW shed 800 MW. Victoria shed 280 MW. Tasmania shed 80 MW.
Load in Victoria restored 1400 hrs
Industrial Load in the NSW region restored 1410 hrs. 1340 hrs other customer load permission to restore.
Load in Tasmania restored 1342 hrs.
Approximate total amount of generation tripped in each region. Nil generation observed to trip.
At 1337 hrs South Australia region synchronised with Victoria region.
At 1420 hrs Queensland region synchronised and NSW.
AEMO has issued this Market Notice in accordance with the NER Cl 4.8.3.
Manager NEM Real Time Operations