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PDPASA - Update of the Forecast Lack Of Reserve Level 1 (LOR1) in the QLD Region on 14/10/2021
The Forecast LOR1 condition in the QLD region advised in AEMO Electricity Market Notice No. 91688 has been updated at 1500 hrs to the following:
[1.] From 1730 hrs 14/10/2021 to 1900 hrs 14/10/2021.
The forecast capacity reserve requirement is 1113 MW.
The minimum capacity reserve available is 1010 MW.
[2.] From 1930 hrs 14/10/2021 to 2000 hrs 14/10/2021.
The forecast capacity reserve requirement is 1103 MW.
The minimum capacity reserve available is 971 MW.
Manager NEM Real Time Operations
Reclassification of a Non-Credible Contingency Event: Dederang - Glenrowan No.1 & No.3 220 kV Lines line and Numurkah Solar Farm line in VIC1 due to Lightning.
Reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits to now be more likely and reasonably possible. Accordingly AEMO has reclassified it as a credible contingency event.
Region: VIC1
Lines: Dederang - Glenrowan No.1 & No.3 220 kV Lines and Numurkah Solar Farm
Duration: 14/10/2021 14:11 until further notice
Constraint set(s) invoked:
V-NIL_DDGN_NSF_N-2 Constraint set contains the following interconnector(s) on the left hand side:
V-S-MNSP1
VIC1-NSW1
Auto-generated on behalf of Manager NEM Real Time Operations
Reclassification of a Non-Credible Contingency Event: Eildon PS - Mt Beauty No.1 220 kV line and Eildon PS - Mt Beauty No.2 220 kV line in VIC1 due to Lightning.
Reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits to now be more likely and reasonably possible. Accordingly AEMO has reclassified it as a credible contingency event.
Region: VIC1
Lines: Eildon PS - Mt Beauty No.1 220 kV and Eildon PS - Mt Beauty No.2 220 kV
Duration: 14/10/2021 14:10 until further notice
Constraint set(s) invoked:
NONE
Auto-generated on behalf of Manager NEM Real Time Operations
Daily planned outage of Heywood No.1 500 kV busbar in the Victoria region on 25, 26, 27, 28 and 29 October 2021
The Heywood No.1 500 kV busbar in the Victoria (VIC) region is planned to be out of service from:
- 0400 hrs to 1000 hrs on 25/10/2021;
- 0400 hrs to 1000 hrs on 26/10/2021;
- 0300 hrs to 1000 hrs on 27/10/2021;
- 0300 hrs to 1000 hrs on 28/10/2021; and
- 1400 hrs to 1600 hrs on 29/10/2021.
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:
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
Reclassification of a Non-Credible Contingency Event: Bayswater - Mt Piper No.5A3 500kV line and Wollar - Mt Piper No.5A5 500kV line in NSW1 due to Lightning.
Reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits to now be more likely and reasonably possible. Accordingly AEMO has reclassified it as a credible contingency event.
Region: NSW1
Lines: Bayswater - Mt Piper No.5A3 500kV and Wollar - Mt Piper No.5A5 500kV
Duration: 14/10/2021 11:34 until further notice
Constraint set(s) invoked:
NONE
Auto-generated on behalf of Manager NEM Real Time Operations
PDPASA - Forecast Lack Of Reserve Level 1 (LOR1) in the QLD Region on 14/10/2021
AEMO declares a Forecast LOR1 condition under clause 4.8.4(b) of the National Electricity Rules for the QLD region for the following period:
[1.] From 1730 hrs 14/10/2021 to 2000 hrs 14/10/2021.
The forecast capacity reserve requirement is 1104 MW.
The minimum capacity reserve available is 769 MW.
Manager NEM Real Time Operations
Cancellation of a Non-Credible Contingency Event: Bayswater - Mt Piper No.5A3 500kV line and Wollar - Mt Piper No.5A5 500kV line in NSW1 due to Lightning.
Cancellation of reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible. There is no longer any lightning activity in the vicinity of the following lines. Accordingly its classification has reverted to a non-credible contingency event.
Region: NSW1
Lines: Bayswater - Mt Piper No.5A3 500kV and Wollar - Mt Piper No.5A5 500kV
Cancellation time: 14/10/2021 09:34
Constraint set(s) revoked:
NONE
Refer AEMO Electricity Market Notice 91686
Auto-generated on behalf of Manager NEM Real Time Operations
Reclassification of a Non-Credible Contingency Event: Bayswater - Mt Piper No.5A3 500kV line and Wollar - Mt Piper No.5A5 500kV line in NSW1 due to Lightning.
Reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits to now be more likely and reasonably possible. Accordingly AEMO has reclassified it as a credible contingency event.
Region: NSW1
Lines: Bayswater - Mt Piper No.5A3 500kV and Wollar - Mt Piper No.5A5 500kV
Duration: 14/10/2021 08:29 until further notice
Constraint set(s) invoked:
NONE
Auto-generated on behalf of Manager NEM Real Time Operations
CHG0070443 | Completed | Production | MSATS - Customer Switching Retail deployment to the AEMO Production environment.
Notification issued to: Market Notice
Notification Type: Completed
Change Type: Normal
Service/Component: MSATS - Consumer Administration and Transfer Solution(CATS)
Change Title: MSATS - Customer Switching Retail deployment to the AEMO Production environment.
Support Information: Report any impacts to the AEMO Information and Support Hub or on External 1300 236 600.