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90177PRICES SUBJECT TO REVIEW03/09/2021 08:30:16 AM
[EventId:202109030835_review] Prices for interval 03-Sep-2021 08:35 are subject to review
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 0830 hrs on 3 September 2021
PRICES ARE SUBJECT TO REVIEW for dispatch interval 03-Sep-2021 08:35.
AEMO is reviewing these prices in accordance with:
- Clause 3.9.2B of the National Electricity Rules for Manifestly Incorrect Inputs
This is an AEMO autogenerated Market Notice.
Issued by Australian Energy Market Operator Ltd at 0830 hrs on 3 September 2021
PRICES ARE SUBJECT TO REVIEW for dispatch interval 03-Sep-2021 08:35.
AEMO is reviewing these prices in accordance with:
- Clause 3.9.2B of the National Electricity Rules for Manifestly Incorrect Inputs
This is an AEMO autogenerated Market Notice.
90176PRICES SUBJECT TO REVIEW03/09/2021 08:25:12 AM
[EventId:202109030830_review] Prices for interval 03-Sep-2021 08:30 are subject to review
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 0825 hrs on 3 September 2021
PRICES ARE SUBJECT TO REVIEW for dispatch interval 03-Sep-2021 08:30.
AEMO is reviewing these prices in accordance with:
- Clause 3.9.2B of the National Electricity Rules for Manifestly Incorrect Inputs
This is an AEMO autogenerated Market Notice.
Issued by Australian Energy Market Operator Ltd at 0825 hrs on 3 September 2021
PRICES ARE SUBJECT TO REVIEW for dispatch interval 03-Sep-2021 08:30.
AEMO is reviewing these prices in accordance with:
- Clause 3.9.2B of the National Electricity Rules for Manifestly Incorrect Inputs
This is an AEMO autogenerated Market Notice.
90175PRICES SUBJECT TO REVIEW03/09/2021 08:20:14 AM
[EventId:202109030825_review] Prices for interval 03-Sep-2021 08:25 are subject to review
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 0820 hrs on 3 September 2021
PRICES ARE SUBJECT TO REVIEW for dispatch interval 03-Sep-2021 08:25.
AEMO is reviewing these prices in accordance with:
- Clause 3.9.2B of the National Electricity Rules for Manifestly Incorrect Inputs
This is an AEMO autogenerated Market Notice.
Issued by Australian Energy Market Operator Ltd at 0820 hrs on 3 September 2021
PRICES ARE SUBJECT TO REVIEW for dispatch interval 03-Sep-2021 08:25.
AEMO is reviewing these prices in accordance with:
- Clause 3.9.2B of the National Electricity Rules for Manifestly Incorrect Inputs
This is an AEMO autogenerated Market Notice.
90174PRICES SUBJECT TO REVIEW03/09/2021 08:15:11 AM
[EventId:202109030820_review] Prices for interval 03-Sep-2021 08:20 are subject to review
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 0815 hrs on 3 September 2021
PRICES ARE SUBJECT TO REVIEW for dispatch interval 03-Sep-2021 08:20.
AEMO is reviewing these prices in accordance with:
- Clause 3.9.2B of the National Electricity Rules for Manifestly Incorrect Inputs
This is an AEMO autogenerated Market Notice.
Issued by Australian Energy Market Operator Ltd at 0815 hrs on 3 September 2021
PRICES ARE SUBJECT TO REVIEW for dispatch interval 03-Sep-2021 08:20.
AEMO is reviewing these prices in accordance with:
- Clause 3.9.2B of the National Electricity Rules for Manifestly Incorrect Inputs
This is an AEMO autogenerated Market Notice.
90173PRICES SUBJECT TO REVIEW03/09/2021 08:10:19 AM
[EventId:202109030815_review] Prices for interval 03-Sep-2021 08:15 are subject to review
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 0810 hrs on 3 September 2021
PRICES ARE SUBJECT TO REVIEW for dispatch interval 03-Sep-2021 08:15.
AEMO is reviewing these prices in accordance with:
- Clause 3.9.2B of the National Electricity Rules for Manifestly Incorrect Inputs
This is an AEMO autogenerated Market Notice.
Issued by Australian Energy Market Operator Ltd at 0810 hrs on 3 September 2021
PRICES ARE SUBJECT TO REVIEW for dispatch interval 03-Sep-2021 08:15.
AEMO is reviewing these prices in accordance with:
- Clause 3.9.2B of the National Electricity Rules for Manifestly Incorrect Inputs
This is an AEMO autogenerated Market Notice.
90172PRICES SUBJECT TO REVIEW03/09/2021 08:05:16 AM
[EventId:202109030810_review] Prices for interval 03-Sep-2021 08:10 are subject to review
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 0805 hrs on 3 September 2021
PRICES ARE SUBJECT TO REVIEW for dispatch interval 03-Sep-2021 08:10.
AEMO is reviewing these prices in accordance with:
- Clause 3.9.2B of the National Electricity Rules for Manifestly Incorrect Inputs
This is an AEMO autogenerated Market Notice.
Issued by Australian Energy Market Operator Ltd at 0805 hrs on 3 September 2021
PRICES ARE SUBJECT TO REVIEW for dispatch interval 03-Sep-2021 08:10.
AEMO is reviewing these prices in accordance with:
- Clause 3.9.2B of the National Electricity Rules for Manifestly Incorrect Inputs
This is an AEMO autogenerated Market Notice.
90171GENERAL NOTICE03/09/2021 09:58:13 AM
Planned outage of Heywood No.1 500 kV busbar and Heywood - Tarrone 500 kV line in the Victoria region on 07 and 08 September 2021
AEMO ELECTRICITY MARKET NOTICE
The Heywood No.1 500 kV busbar and Heywood - Tarrone 500 kV line in the Victoria (VIC) region are planned to be out of service from:
0900 hrs to 2000 hrs on 07/09/2021; and
0900 hrs to 2000 hrs on 08/09/2021.
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 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 VIC - SA interconnector (Heywood interconnector) to manage system security following the loss of the next contingency.
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:
V-HYTR
F-I-HYSE
S-X_BC_CP
V-HYTX_M12
V-HY_500BUS
I-VS_050
Refer AEMO Network Outage Schedule (NOS) for further details.
AEMO Operations
The Heywood No.1 500 kV busbar and Heywood - Tarrone 500 kV line in the Victoria (VIC) region are planned to be out of service from:
0900 hrs to 2000 hrs on 07/09/2021; and
0900 hrs to 2000 hrs on 08/09/2021.
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 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 VIC - SA interconnector (Heywood interconnector) to manage system security following the loss of the next contingency.
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:
V-HYTR
F-I-HYSE
S-X_BC_CP
V-HYTX_M12
V-HY_500BUS
I-VS_050
Refer AEMO Network Outage Schedule (NOS) for further details.
AEMO Operations
90170MARKET INTERVENTION03/09/2021 07:30:12 AM
Cancellation - AEMO Intervention Event - Intervention dispatch intervals - Direction SA region - 31/08/2021
AEMO ELECTRICITY MARKET NOTICE
Cancellation - AEMO Intervention Event - Intervention dispatch intervals - Direction SA region - 31/08/2021
Refer Market Notice 90089
The AEMO Intervention Event and all associated directions are cancelled from 0730 hrs 03/09/2021
Manager NEM Real Time Operations
Cancellation - AEMO Intervention Event - Intervention dispatch intervals - Direction SA region - 31/08/2021
Refer Market Notice 90089
The AEMO Intervention Event and all associated directions are cancelled from 0730 hrs 03/09/2021
Manager NEM Real Time Operations
90168INTER-REGIONAL TRANSFER03/09/2021 04:12:10 AM
Inter-regional transfer limit variation: Hazelwood - South Morang No 2 500 kV Line (VIC) - Voltage Control
AEMO ELECTRICITY MARKET NOTICE
The Hazelwood - South Morang No 2 500 kV Line has been de-energised to manage voltages in the Victoria region.
The following constraint set was invoked at 0410 hrs 03/09/2021.
V-HWSM
The constraint set contains equations with the following interconnectors on the LHS.
T-V-MNSP
V-S-MNSP1
V-SA
VIC1-NSW1
Refer to AEMO Network Outage Scheduler (NOS) for return to service details
Manager NEM Real Time Operations
The Hazelwood - South Morang No 2 500 kV Line has been de-energised to manage voltages in the Victoria region.
The following constraint set was invoked at 0410 hrs 03/09/2021.
V-HWSM
The constraint set contains equations with the following interconnectors on the LHS.
T-V-MNSP
V-S-MNSP1
V-SA
VIC1-NSW1
Refer to AEMO Network Outage Scheduler (NOS) for return to service details
Manager NEM Real Time Operations