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63482GENERAL NOTICE16/07/2018 01:58:25 PM
Possible intervention to manage power system security in South Australia (SA) Region 16/07/2018
AEMO ELECTRICITY MARKET NOTICE
The synchronous generating units expected to be synchronised in SA from 2230 hrs 16/07/2018 to 0630 hrs 16/07/2018 in Pre-dispatch published at 1330 hrs 17/07/2018 are inadequate to maintain sufficient system strength in SA and hence a secure operating state.
AEMO currently estimates that, in the absence of sufficient market response by 1630 hrs 16/07/2018, AEMO may need to intervene by issuing a direction requiring one or more SA synchronous generating unit(s) to operate or remain synchronised from 2230 hrs 16/07/2018 to 0630 hrs 17/07/2018, to maintain power system security in SA.
Manager NEM Real Time Operations
The synchronous generating units expected to be synchronised in SA from 2230 hrs 16/07/2018 to 0630 hrs 16/07/2018 in Pre-dispatch published at 1330 hrs 17/07/2018 are inadequate to maintain sufficient system strength in SA and hence a secure operating state.
AEMO currently estimates that, in the absence of sufficient market response by 1630 hrs 16/07/2018, AEMO may need to intervene by issuing a direction requiring one or more SA synchronous generating unit(s) to operate or remain synchronised from 2230 hrs 16/07/2018 to 0630 hrs 17/07/2018, to maintain power system security in SA.
Manager NEM Real Time Operations
63470GENERAL NOTICE15/07/2018 01:28:20 PM
Possible intervention to manage power system security in South Australia (SA) Region 15/07/18
AEMO ELECTRICITY MARKET NOTICE
The synchronous generating units expected to be synchronised in SA from 2200 hrs 15/07/2018 to 0600 hrs 16/07/2018 in Pre-dispatch published at 1230 hrs 15/07/2018 are inadequate to maintain sufficient system strength in SA and hence a secure operating state.
AEMO currently estimates that, in the absence of sufficient market response by 1630 hrs 15/07/2018, AEMO may need to issue a Direction requiring one or more SA synchronous generating unit(s) to operate or remain synchronised from 2200 hrs 15/07/2018 to 0600 hrs 16/07/2018, to maintain power system security in SA.
Manager NEM Real Time Operations
The synchronous generating units expected to be synchronised in SA from 2200 hrs 15/07/2018 to 0600 hrs 16/07/2018 in Pre-dispatch published at 1230 hrs 15/07/2018 are inadequate to maintain sufficient system strength in SA and hence a secure operating state.
AEMO currently estimates that, in the absence of sufficient market response by 1630 hrs 15/07/2018, AEMO may need to issue a Direction requiring one or more SA synchronous generating unit(s) to operate or remain synchronised from 2200 hrs 15/07/2018 to 0600 hrs 16/07/2018, to maintain power system security in SA.
Manager NEM Real Time Operations
63451GENERAL NOTICE14/07/2018 03:38:58 PM
Possible intervention to manage power system security in South Australia (SA) Region
AEMO ELECTRICITY MARKET NOTICE
Possible intervention to manage power system security in South Australia (SA) Region
The synchronous generating units expected to be synchronised in SA from 0030 hrs 15/07/2018 to 1430 hrs 15/7/2018 in Pre-dispatch published at 1500 hrs 14/07/2018 are inadequate to maintain sufficient system strength in SA and hence a secure operating state.
AEMO currently estimates that, in the absence of sufficient market response by 1630 hrs 14/07/.2018, AEMO may need to intervene by issuing a direction requiring one or more SA synchronous generating unit(s) to operate or remain synchronised from 0030 hrs 15/07/2018 to 1430 hrs 15/07/2018, to maintain power system security in SA.
Manager NEM Real Time Operations
Possible intervention to manage power system security in South Australia (SA) Region
The synchronous generating units expected to be synchronised in SA from 0030 hrs 15/07/2018 to 1430 hrs 15/7/2018 in Pre-dispatch published at 1500 hrs 14/07/2018 are inadequate to maintain sufficient system strength in SA and hence a secure operating state.
AEMO currently estimates that, in the absence of sufficient market response by 1630 hrs 14/07/.2018, AEMO may need to intervene by issuing a direction requiring one or more SA synchronous generating unit(s) to operate or remain synchronised from 0030 hrs 15/07/2018 to 1430 hrs 15/07/2018, to maintain power system security in SA.
Manager NEM Real Time Operations
63435GENERAL NOTICE10/07/2018 07:41:55 PM
Planned outage of Tailem Bend - Cherry Garden 275kV line in the SA region rescheduled on 11/07/2018
AEMO ELECTRICITY MARKET NOTICE
The Tailem Bend - Cherry Garden 275kV line in South Australia (SA) region previously scheduled to take place from 11/07/2018 08:00 to 14/07/2018 17:30. (Market Notice 63141) has been rescheduled to 11/07/2018 12:30 to 14/07/2018 17:30.
During this outage, SA will remain connected to the rest of the NEM via the Tungkillo - Tailem Bend 275kV line and the 132kV network.
A credible contingency event on the Tungkillo - Tailem Bend 275kV line during this planned outage will sever the 275kV connections between the NEM and SA. If SA remains connected to the NEM via the 132kV network, this will pose a system security issue.
If the above credible contingency occurs, 35 MW of raise and lower regulation FCAS will be sourced from within SA.
If this occurs, AEMO will take all necessary steps as outlined in Section 6.1 of SO-OP-3715 Power System Security Guideline to separate the 132kV network and therefore manage an orderly separation of SA from the NEM.
Diyoni Hoole
AEMO Operations
The Tailem Bend - Cherry Garden 275kV line in South Australia (SA) region previously scheduled to take place from 11/07/2018 08:00 to 14/07/2018 17:30. (Market Notice 63141) has been rescheduled to 11/07/2018 12:30 to 14/07/2018 17:30.
During this outage, SA will remain connected to the rest of the NEM via the Tungkillo - Tailem Bend 275kV line and the 132kV network.
A credible contingency event on the Tungkillo - Tailem Bend 275kV line during this planned outage will sever the 275kV connections between the NEM and SA. If SA remains connected to the NEM via the 132kV network, this will pose a system security issue.
If the above credible contingency occurs, 35 MW of raise and lower regulation FCAS will be sourced from within SA.
If this occurs, AEMO will take all necessary steps as outlined in Section 6.1 of SO-OP-3715 Power System Security Guideline to separate the 132kV network and therefore manage an orderly separation of SA from the NEM.
Diyoni Hoole
AEMO Operations
63434GENERAL NOTICE10/07/2018 05:46:27 PM
Update - Planned outage of Tungkillo - Tailem Bend 275kV line in the SA region
AEMO ELECTRICITY MARKET NOTICE
Refer AEMO Electricity Market Notice 63182
The return to service of the Tungkillo - Tailem Bend 275kV line in South Australia (SA) region previously planned for 1730 hrs 10/07/2018 has been extended to 1100 hrs 11/07/2018.
During this outage, SA will remain connected to the rest of the NEM via the Tailem Bend - Cherry Garden 275kV line and the 132kV network.
A credible contingency event on the Tailem Bend - Cherry Garden 275 kV line during this planned outage will sever the 275kV connections between the NEM and SA. If SA remains connected to the NEM via the 132kV network, this will pose a system security issue.
If the above credible contingency occurs, 35 MW of raise and lower regulation FCAS will be sourced from within SA.
If this occurs, AEMO will take all necessary steps as outlined in Section 6.1 of SO-OP-3715 Power System Security Guideline to separate the 132kV network and therefore manage an orderly separation of SA from the NEM.
Manager NEM Real Time Operations
Refer AEMO Electricity Market Notice 63182
The return to service of the Tungkillo - Tailem Bend 275kV line in South Australia (SA) region previously planned for 1730 hrs 10/07/2018 has been extended to 1100 hrs 11/07/2018.
During this outage, SA will remain connected to the rest of the NEM via the Tailem Bend - Cherry Garden 275kV line and the 132kV network.
A credible contingency event on the Tailem Bend - Cherry Garden 275 kV line during this planned outage will sever the 275kV connections between the NEM and SA. If SA remains connected to the NEM via the 132kV network, this will pose a system security issue.
If the above credible contingency occurs, 35 MW of raise and lower regulation FCAS will be sourced from within SA.
If this occurs, AEMO will take all necessary steps as outlined in Section 6.1 of SO-OP-3715 Power System Security Guideline to separate the 132kV network and therefore manage an orderly separation of SA from the NEM.
Manager NEM Real Time Operations
63432GENERAL NOTICE10/07/2018 04:10:35 PM
Improvements to Projected Assessment of System Adequacy (PDPASA and STPASA) systems
AEMO ELECTRICITY MARKET NOTICE
Please be advised that AEMO is implementing an improvement to publication of reserves via its Pre-dispatch Projected Assessment of System Adequacy (PDPASA) and STPASA systems. The change enables PASA to first utilise the energy limited plant to minimise LOR conditions and then allocate the remaining energy limited plant proportional to regional demand in reserve reporting.
Market participants were advised of this change in the NEM Consultative Forum on 26 June 2018.
Implementation of this change is scheduled at 1000 hrs on Wednesday 11 July 2018.
Group Manager Operational Support
AEMO
Please be advised that AEMO is implementing an improvement to publication of reserves via its Pre-dispatch Projected Assessment of System Adequacy (PDPASA) and STPASA systems. The change enables PASA to first utilise the energy limited plant to minimise LOR conditions and then allocate the remaining energy limited plant proportional to regional demand in reserve reporting.
Market participants were advised of this change in the NEM Consultative Forum on 26 June 2018.
Implementation of this change is scheduled at 1000 hrs on Wednesday 11 July 2018.
Group Manager Operational Support
AEMO
63420GENERAL NOTICE09/07/2018 09:08:19 AM
Planned outage of Tailem Bend - South East 275kV No 2 line in the SA region beginning on 06/08/2018
AEMO ELECTRICITY MARKET NOTICE
The Tailem Bend - South East 275kV No 2 line and Tailem Bend 275kV West Bus in South Australia (SA) region are planned to be out of service from 0830 hrs on 06/08/2018 to 1730 hrs on 12/08/2018.
During this outage, SA will remain connected to the rest of the NEM via the Tailem Bend - South East 275kV No 1 line and the 132kV network.
A credible contingency event on the Tailem Bend - South East 275kV No 1 line or Tailem Bend - Tunkillo 275 kV line during this planned outage will sever the 275kV connections between the NEM and SA. If SA remains connected to the NEM via the 132kV network, this will pose a system security issue.
If one of the above credible contingencies occurs, 35 MW of raise and lower regulation FCAS will be sourced from within SA.
If this occurs, AEMO will take all necessary steps as outlined in Section 6.1 of SO-OP-3715 Power System Security Guideline to separate the 132kV network and therefore manage an orderly separation of SA from the NEM.
Diyoni Hoole
AEMO Operations
The Tailem Bend - South East 275kV No 2 line and Tailem Bend 275kV West Bus in South Australia (SA) region are planned to be out of service from 0830 hrs on 06/08/2018 to 1730 hrs on 12/08/2018.
During this outage, SA will remain connected to the rest of the NEM via the Tailem Bend - South East 275kV No 1 line and the 132kV network.
A credible contingency event on the Tailem Bend - South East 275kV No 1 line or Tailem Bend - Tunkillo 275 kV line during this planned outage will sever the 275kV connections between the NEM and SA. If SA remains connected to the NEM via the 132kV network, this will pose a system security issue.
If one of the above credible contingencies occurs, 35 MW of raise and lower regulation FCAS will be sourced from within SA.
If this occurs, AEMO will take all necessary steps as outlined in Section 6.1 of SO-OP-3715 Power System Security Guideline to separate the 132kV network and therefore manage an orderly separation of SA from the NEM.
Diyoni Hoole
AEMO Operations
63400GENERAL NOTICE07/07/2018 01:04:49 PM
Cancellation of planned outage of Heywood - South East 275 kV No 1 line in the SA region beginning on 07/06/2018
AEMO ELECTRICITY MARKET NOTICE
This is an update to Market Notice 63205.
The Heywood - South East 275kV No 1 line in South Australia (SA) region planned to be out of service from 0800 hrs on 07/06/2018 to 1700 hrs on 07/07/2018 has been withdrawn.
This was reflected in the Network Outage Scheduler (NOS) from 1200 hrs on 07/06/2018.
Manager NEM Real Time Operations
This is an update to Market Notice 63205.
The Heywood - South East 275kV No 1 line in South Australia (SA) region planned to be out of service from 0800 hrs on 07/06/2018 to 1700 hrs on 07/07/2018 has been withdrawn.
This was reflected in the Network Outage Scheduler (NOS) from 1200 hrs on 07/06/2018.
Manager NEM Real Time Operations
63349GENERAL NOTICE04/07/2018 12:57:03 PM
Possible intervention to manage power system security in South Australia (SA) Region
AEMO ELECTRICITY MARKET NOTICE
Possible intervention to manage power system security in South Australia (SA) Region
The synchronous generating units expected to be synchronised in SA from 1600 hrs 4/7/2018 to 1600 hrs 6/07/2018 in Pre-dispatch published at 1230 hrs 4/07/2018 are inadequate to maintain sufficient system strength in SA and hence a secure operating state.
AEMO currently estimates that, in the absence of sufficient market response by 1500 hrs 4/07/2018, AEMO may need to intervene by issuing a direction requiring one or more SA synchronous generating unit(s) to operate or remain synchronised from1600 hrs 4/07/2018 to 1700 hrs 06/07/2018), to maintain power system security in SA.
Manager NEM Real Time Operations
Possible intervention to manage power system security in South Australia (SA) Region
The synchronous generating units expected to be synchronised in SA from 1600 hrs 4/7/2018 to 1600 hrs 6/07/2018 in Pre-dispatch published at 1230 hrs 4/07/2018 are inadequate to maintain sufficient system strength in SA and hence a secure operating state.
AEMO currently estimates that, in the absence of sufficient market response by 1500 hrs 4/07/2018, AEMO may need to intervene by issuing a direction requiring one or more SA synchronous generating unit(s) to operate or remain synchronised from1600 hrs 4/07/2018 to 1700 hrs 06/07/2018), to maintain power system security in SA.
Manager NEM Real Time Operations