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87977MARKET INTERVENTION10/07/2021 01:15:52 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 currently expected to be synchronised in SA from 0030 hrs 11/07/2021 to 1630 hrs 11/07/2021 will be inadequate to maintain sufficient system strength in SA and hence a secure operating state.
AEMO estimates that, in the absence of sufficient market response by 1700 hrs 10/07/2021 , AEMO may need to intervene by issuing a direction requiring one or more SA synchronous generating unit(s) to operate or remain synchronised 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 currently expected to be synchronised in SA from 0030 hrs 11/07/2021 to 1630 hrs 11/07/2021 will be inadequate to maintain sufficient system strength in SA and hence a secure operating state.
AEMO estimates that, in the absence of sufficient market response by 1700 hrs 10/07/2021 , AEMO may need to intervene by issuing a direction requiring one or more SA synchronous generating unit(s) to operate or remain synchronised to maintain power system security in SA.
Manager NEM Real Time Operations
87976RESERVE NOTICE10/07/2021 09:26:18 AM
STPASA - Forecast Lack Of Reserve Level 2 (LOR2) in the NSW Region on 12/07/2021
AEMO ELECTRICITY MARKET NOTICE
AEMO declares a Forecast LOR2 condition under clause 4.8.4(b) of the National Electricity Rules for the NSW region for the following period[s]:
[1.] From 0730 hrs 12/07 to 0830 hrs 12/07.
The forecast capacity reserve requirement is 1667 MW.
The minimum capacity reserve available is 1473 MW.
AEMO is seeking a market response.
AEMO has not yet estimated the latest time it would need to intervene through an AEMO intervention event.
Manager NEM Real Time Operations
AEMO declares a Forecast LOR2 condition under clause 4.8.4(b) of the National Electricity Rules for the NSW region for the following period[s]:
[1.] From 0730 hrs 12/07 to 0830 hrs 12/07.
The forecast capacity reserve requirement is 1667 MW.
The minimum capacity reserve available is 1473 MW.
AEMO is seeking a market response.
AEMO has not yet estimated the latest time it would need to intervene through an AEMO intervention event.
Manager NEM Real Time Operations
87975NON-CONFORMANCE10/07/2021 09:00:11 AM
NON-CONFORMANCE Region NSW1 Saturday, 10 July 2021
AEMO ELECTRICITY MARKET NOTICE
NON-CONFORMANCE NSW1 Region Saturday, 10 July 2021
AEMO declared a schedule generating unit non-conforming
Unit: VP6
Duration: 10/07/2021 08:50 to 10/07/2021 09:00
Amount: 38 MW
Constraint: NC-N_VP6
Auto-generated on behalf of Manager NEM Real Time Operations
NON-CONFORMANCE NSW1 Region Saturday, 10 July 2021
AEMO declared a schedule generating unit non-conforming
Unit: VP6
Duration: 10/07/2021 08:50 to 10/07/2021 09:00
Amount: 38 MW
Constraint: NC-N_VP6
Auto-generated on behalf of Manager NEM Real Time Operations
87974NON-CONFORMANCE10/07/2021 04:50:16 AM
NON-CONFORMANCE Region SA1 Saturday, 10 July 2021
AEMO ELECTRICITY MARKET NOTICE
NON-CONFORMANCE SA1 Region Saturday, 10 July 2021
AEMO declared a schedule generating unit non-conforming
Unit: OSB-AG
Duration: 10/07/2021 04:40 to 10/07/2021 04:50
Amount: 12 MW
Constraint: NC-S_OSB-AG
Auto-generated on behalf of Manager NEM Real Time Operations
NON-CONFORMANCE SA1 Region Saturday, 10 July 2021
AEMO declared a schedule generating unit non-conforming
Unit: OSB-AG
Duration: 10/07/2021 04:40 to 10/07/2021 04:50
Amount: 12 MW
Constraint: NC-S_OSB-AG
Auto-generated on behalf of Manager NEM Real Time Operations
87973GENERAL NOTICE09/07/2021 05:14:01 PM
Planned outage of Heywood 500kV bus no 2 outage in Victoria (VIC) region on 14, 21,22,23 July 2021
AEMO ELECTRICITY MARKET NOTICE
This market notice is FOR INFORMATION ONLY.
Heywood 500kV bus no 2 outages is planned to be out on the following periods.
-0700 hrs to 1700 hrs on 14 July 2021
-0700 hrs to 1700 hrs on 21 July 2021
-0700 hrs to 1700 hrs on 22 July 2021
-0700 hrs to 1700 hrs on 23 July 2021
A credible contingency event during this planned outage could cause synchronous separation of the South Australia (SA) region from the rest of the NEM. If separation occurs, load may be interrupted due to the operation of the Automatic Under Frequency Load Shedding (AUFLS) scheme in SA.
The credible separation contingency is managed as follows:
When power transfer is from SA to Victoria (Vic), contingency lower FCAS will be sourced from SA.
When power transfer is from Vic to SA, due to the 47-52Hz island separation frequency band advised by the SA jurisdiction, contingency raise FCAS is not sourced in SA and the AUFLS scheme may respond to low frequency events.
Power transfer will be restricted on Victoria - South Australia interconnector (Heywood interconnector).
Forecast capacity reserves in the SA region are currently sufficient to meet electricity demand during the planned outage.
The following constraint sets have been invoked for this outage:
F-I-HYSE
I-VS_050
S-X_BC_CP
V-HYTX_M12
V-HY_500BUS
Refer AEMO Network Outage Schedule (NOS) for further details.
AEMO Operations
This market notice is FOR INFORMATION ONLY.
Heywood 500kV bus no 2 outages is planned to be out on the following periods.
-0700 hrs to 1700 hrs on 14 July 2021
-0700 hrs to 1700 hrs on 21 July 2021
-0700 hrs to 1700 hrs on 22 July 2021
-0700 hrs to 1700 hrs on 23 July 2021
A credible contingency event during this planned outage could cause synchronous separation of the South Australia (SA) region from the rest of the NEM. If separation occurs, load may be interrupted due to the operation of the Automatic Under Frequency Load Shedding (AUFLS) scheme in SA.
The credible separation contingency is managed as follows:
When power transfer is from SA to Victoria (Vic), contingency lower FCAS will be sourced from SA.
When power transfer is from Vic to SA, due to the 47-52Hz island separation frequency band advised by the SA jurisdiction, contingency raise FCAS is not sourced in SA and the AUFLS scheme may respond to low frequency events.
Power transfer will be restricted on Victoria - South Australia interconnector (Heywood interconnector).
Forecast capacity reserves in the SA region are currently sufficient to meet electricity demand during the planned outage.
The following constraint sets have been invoked for this outage:
F-I-HYSE
I-VS_050
S-X_BC_CP
V-HYTX_M12
V-HY_500BUS
Refer AEMO Network Outage Schedule (NOS) for further details.
AEMO Operations
87972GENERAL NOTICE09/07/2021 11:29:37 AM
Outage Cancelled: Planned outage of Heywood-Mortlake PS 500 kV line in Victoria region on 14 July 2021
AEMO ELECTRICITY MARKET NOTICE
Refer to AEMO Electricity Market Notices 87715.
The Heywood-Mortlake PS 500 kV line in the Victoria (VIC) region was planned to be out of service on 14/07/2021. This outage is now cancelled.
All constraint sets associated with this outage have been revoked.
AEMO Operations
Refer to AEMO Electricity Market Notices 87715.
The Heywood-Mortlake PS 500 kV line in the Victoria (VIC) region was planned to be out of service on 14/07/2021. This outage is now cancelled.
All constraint sets associated with this outage have been revoked.
AEMO Operations
87971GENERAL NOTICE09/07/2021 11:34:16 AM
Cancellation of Basslink outage on 14 July 2021
AEMO ELECTRICITY MARKET NOTICE
This has reference to the Market Notice 87956 issued on 8 July 2021.
Basslink Pty Ltd have cancelled the previously planned outage for modifications to its control systems on 14 July 2021.
Manager Congestion and Grid Modelling
AEMO Operations
This has reference to the Market Notice 87956 issued on 8 July 2021.
Basslink Pty Ltd have cancelled the previously planned outage for modifications to its control systems on 14 July 2021.
Manager Congestion and Grid Modelling
AEMO Operations
87970INTER-REGIONAL TRANSFER09/07/2021 09:35:32 AM
Inter-regional transfer limit variation - Yass to Wagga132 990 132kV line - NSW region - 09/07/2021
AEMO ELECTRICITY MARKET NOTICE
Inter-regional transfer limit variation - Yass to Wagga132 990 132kV line - NSW region - 09/07/2021
At 0912 hrs 09/07/2021 there was a short notice outage of the Yass to Wagga132 990 132kV line.
The following constraint set invoked at 0920 hrs 09/07/2021
N-X_WGYS_990_991
This constraint set contains equations with the following interconnectors on the LHS.
V-S-MNSP1
VIC1- NSW1
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations
Inter-regional transfer limit variation - Yass to Wagga132 990 132kV line - NSW region - 09/07/2021
At 0912 hrs 09/07/2021 there was a short notice outage of the Yass to Wagga132 990 132kV line.
The following constraint set invoked at 0920 hrs 09/07/2021
N-X_WGYS_990_991
This constraint set contains equations with the following interconnectors on the LHS.
V-S-MNSP1
VIC1- NSW1
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations
87969GENERAL NOTICE09/07/2021 08:07:10 AM
Planned outage of Heywood to Mortlake power station No. 2 line No. 2 bus 500kV Circuit Breaker (213) in the Victoria (VIC) region from 0500 hrs to 0700 hrs on 12th July 2021
AEMO ELECTRICITY MARKET NOTICE
This market notice is FOR INFORMATION ONLY.
A credible contingency event during this planned outage could cause synchronous separation of the South Australia (SA) region from the rest of the NEM. If separation occurs, load may be interrupted due to the operation of the Automatic Under Frequency Load Shedding (AUFLS) scheme in SA.
The credible separation contingency is managed as follows:
When power transfer is from SA to Victoria (Vic), contingency lower FCAS will be sourced from SA.
When power transfer is from Vic to SA, due to the 47-52Hz island separation frequency band advised by the SA jurisdiction, contingency raise FCAS is not sourced in SA and the AUFLS scheme may respond to low frequency events.
Power transfer will be restricted on Victoria - South Australia interconnector (Heywood interconnector).
Forecast capacity reserves in the SA region are currently sufficient to meet electricity demand during the planned outage.
The following constraint sets have been invoked for this outage:
F-I-HYSE
I-VS_050
S-X_BC_CP
V-HYCB_210_213
Refer AEMO Network Outage Schedule (NOS) for further details.
AEMO Operations
This market notice is FOR INFORMATION ONLY.
A credible contingency event during this planned outage could cause synchronous separation of the South Australia (SA) region from the rest of the NEM. If separation occurs, load may be interrupted due to the operation of the Automatic Under Frequency Load Shedding (AUFLS) scheme in SA.
The credible separation contingency is managed as follows:
When power transfer is from SA to Victoria (Vic), contingency lower FCAS will be sourced from SA.
When power transfer is from Vic to SA, due to the 47-52Hz island separation frequency band advised by the SA jurisdiction, contingency raise FCAS is not sourced in SA and the AUFLS scheme may respond to low frequency events.
Power transfer will be restricted on Victoria - South Australia interconnector (Heywood interconnector).
Forecast capacity reserves in the SA region are currently sufficient to meet electricity demand during the planned outage.
The following constraint sets have been invoked for this outage:
F-I-HYSE
I-VS_050
S-X_BC_CP
V-HYCB_210_213
Refer AEMO Network Outage Schedule (NOS) for further details.
AEMO Operations