Filter by:
Filter by category
Filter by Date
From
To
90305CONSTRAINTS09/09/2021 05:11:23 PM
Update to non-synchronous limits in South Australia
AEMO MARKET NOTICE
Refer to market notice 89336
As a part of the transition to new limits for the synchronous condensers in South Australia AEMO will increase the non-syncronous limit to 1900 MW. This limit will apply only under system normal conditions only - the current limit will apply for Davenport synchronous condenser or 275kV line outages.
No changes to the SA generator combinations will be made at this stage.
The revision to the limits will be implemented at 1000 hrs on Friday 10th September 2021 with the following changes:
The following constraint equation will be updated:
S_NIL_STRENGTH_1
and the following removed:
S_NIL_STRENGTH_2
Outage constraints will also be updated.
For more information refer to: https://www.aemo.com.au/energy-systems/electricity/national-electricity-market-nem/system-operations/congestion-information-resource/related-resources/operation-of-davenport-and-robertstown-synchronous-condensers
and the limits advice: https://www.aemo.com.au/energy-systems/electricity/national-electricity-market-nem/system-operations/congestion-information-resource/limits-advice
For further details on this change please contact ben.blake@aemo.com.au
Ben Blake
AEMO Operations
Refer to market notice 89336
As a part of the transition to new limits for the synchronous condensers in South Australia AEMO will increase the non-syncronous limit to 1900 MW. This limit will apply only under system normal conditions only - the current limit will apply for Davenport synchronous condenser or 275kV line outages.
No changes to the SA generator combinations will be made at this stage.
The revision to the limits will be implemented at 1000 hrs on Friday 10th September 2021 with the following changes:
The following constraint equation will be updated:
S_NIL_STRENGTH_1
and the following removed:
S_NIL_STRENGTH_2
Outage constraints will also be updated.
For more information refer to: https://www.aemo.com.au/energy-systems/electricity/national-electricity-market-nem/system-operations/congestion-information-resource/related-resources/operation-of-davenport-and-robertstown-synchronous-condensers
and the limits advice: https://www.aemo.com.au/energy-systems/electricity/national-electricity-market-nem/system-operations/congestion-information-resource/limits-advice
For further details on this change please contact ben.blake@aemo.com.au
Ben Blake
AEMO Operations
90303GENERAL NOTICE09/09/2021 04:40:44 PM
Planned outage of Heywood No.1 500 kV busbar and Heywood - Tarrone 500 kV line in the Victoria region on 15 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 1700 hrs to 1900 hrs on 15/09/2021.
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 1700 hrs to 1900 hrs on 15/09/2021.
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
90302GENERAL NOTICE09/09/2021 04:39:37 PM
Update - Planned outage of Heywood - South East no 1 line in the South Australia (SA) region on 12 to 14/09/2021
AEMO ELECTRICITY MARKET NOTICE
Refer to MN 89965.
The Heywood - South East no 1 line in the South Australia (SA) region was planned to be out of service from 0815hrs on 12/09/2021 to 1330 hrs on 14/09/2021.
This outage is now planned to be out of service as follows:
- 0700 hrs to 1700 hrs on 14/09/2021; and
- 0700 hrs to 1700 hrs on 15/09/2021.
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 Victoria, contingency lower FCAS will be sourced from SA.
-When power transfer is from Victoria 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) 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:
F-I-HYSE
I-HYSE
I-VS_050
S-HYSE_BC-2CP
S-X_BC_CP
V-HYTX_M12
Refer AEMO Network Outage Schedule (NOS) for further details.
AEMO Operations
Refer to MN 89965.
The Heywood - South East no 1 line in the South Australia (SA) region was planned to be out of service from 0815hrs on 12/09/2021 to 1330 hrs on 14/09/2021.
This outage is now planned to be out of service as follows:
- 0700 hrs to 1700 hrs on 14/09/2021; and
- 0700 hrs to 1700 hrs on 15/09/2021.
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 Victoria, contingency lower FCAS will be sourced from SA.
-When power transfer is from Victoria 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) 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:
F-I-HYSE
I-HYSE
I-VS_050
S-HYSE_BC-2CP
S-X_BC_CP
V-HYTX_M12
Refer AEMO Network Outage Schedule (NOS) for further details.
AEMO Operations
90297RESERVE NOTICE09/09/2021 03:00:07 PM
STPASA - Update of the Forecast Lack Of Reserve Level 1 (LOR1) in the TAS Region beginning on 14/09/2021
AEMO ELECTRICITY MARKET NOTICE
The Forecast LOR1 condition in the TAS region advised in AEMO Electricity Market Notice No. 90279 has been updated at 1400 hrs 09/09/2021 to the following:
1. From 0730 hrs 14/09/2021 to 0830 hrs 14/09/2021.
The forecast capacity reserve requirement is 741 MW.
The minimum capacity reserve available is 703 MW.
2. From 0730 hrs 15/09/2021 to 0830 hrs 15/09/2021.
The forecast capacity reserve requirement is 741 MW.
The minimum capacity reserve available is 717 MW.
AEMO Operations
The Forecast LOR1 condition in the TAS region advised in AEMO Electricity Market Notice No. 90279 has been updated at 1400 hrs 09/09/2021 to the following:
1. From 0730 hrs 14/09/2021 to 0830 hrs 14/09/2021.
The forecast capacity reserve requirement is 741 MW.
The minimum capacity reserve available is 703 MW.
2. From 0730 hrs 15/09/2021 to 0830 hrs 15/09/2021.
The forecast capacity reserve requirement is 741 MW.
The minimum capacity reserve available is 717 MW.
AEMO Operations
90296GENERAL NOTICE09/09/2021 01:15:23 PM
Outage Cancelled: Planned outage of Heywood No.1 500 kV busbar and Heywood - Tarrone 500 kV line in the Victoria region on 10 September 2021
AEMO ELECTRICITY MARKET NOTICE
Refer to AEMO Electricity Market notice 90260.
The Heywood No.1 500 kV busbar and Heywood-Tarrone 500 kV line in Victoria (VIC) Region were planned to be out of serviice on 10 September 2021. This outage has been cancelled.
All constraint sets associated with this outage have been revoked.
AEMO Operations.
Refer to AEMO Electricity Market notice 90260.
The Heywood No.1 500 kV busbar and Heywood-Tarrone 500 kV line in Victoria (VIC) Region were planned to be out of serviice on 10 September 2021. This outage has been cancelled.
All constraint sets associated with this outage have been revoked.
AEMO Operations.
90295PRICES UNCHANGED09/09/2021 09:34:42 AM
[EventId:202109090905_confirmed] Prices for interval 09-Sep-2021 09:05 are now confirmed
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 0930 hrs on 9 September 2021
PRICES ARE NOW CONFIRMED for dispatch interval 09-Sep-2021 09:05.
In accordance with Market Notice 90284 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.
Issued by Australian Energy Market Operator Ltd at 0930 hrs on 9 September 2021
PRICES ARE NOW CONFIRMED for dispatch interval 09-Sep-2021 09:05.
In accordance with Market Notice 90284 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.
90294PRICES UNCHANGED09/09/2021 09:34:01 AM
[EventId:202109090930_confirmed] Prices for interval 09-Sep-2021 09:30 are now confirmed
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 0930 hrs on 9 September 2021
PRICES ARE NOW CONFIRMED for dispatch interval 09-Sep-2021 09:30.
In accordance with Market Notice 90289 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.
Issued by Australian Energy Market Operator Ltd at 0930 hrs on 9 September 2021
PRICES ARE NOW CONFIRMED for dispatch interval 09-Sep-2021 09:30.
In accordance with Market Notice 90289 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.
90293PRICES UNCHANGED09/09/2021 09:33:18 AM
[EventId:202109090925_confirmed] Prices for interval 09-Sep-2021 09:25 are now confirmed
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 0930 hrs on 9 September 2021
PRICES ARE NOW CONFIRMED for dispatch interval 09-Sep-2021 09:25.
In accordance with Market Notice 90288 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.
Issued by Australian Energy Market Operator Ltd at 0930 hrs on 9 September 2021
PRICES ARE NOW CONFIRMED for dispatch interval 09-Sep-2021 09:25.
In accordance with Market Notice 90288 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.
90292PRICES UNCHANGED09/09/2021 09:32:36 AM
[EventId:202109090920_confirmed] Prices for interval 09-Sep-2021 09:20 are now confirmed
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 0930 hrs on 9 September 2021
PRICES ARE NOW CONFIRMED for dispatch interval 09-Sep-2021 09:20.
In accordance with Market Notice 90287 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.
Issued by Australian Energy Market Operator Ltd at 0930 hrs on 9 September 2021
PRICES ARE NOW CONFIRMED for dispatch interval 09-Sep-2021 09:20.
In accordance with Market Notice 90287 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.