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Update - Lightning vulnerable equipment in QLD region
Update - Lightning vulnerable equipment in QLD region
Special Reclassification of Transmission Equipment during lightning
Refer to AEMO Electricity Market Notice 112581 and 112884.
At 1424 hrs 21/12/2023, the Middle Ridge 275 kV circuit breakers 5432 and 5422 tripped. This offloaded the H14 Middle Ridge No.2 and No. 3 275/110 kV transformers
The cause of the trip was identified as due to lightning.
In accordance with SO_OP_3715, AEMO now considers the H14 Middle Ridge No. 2 and No. 3 275/110 kV transformers to be vulnerable due to lightning.
Manager NEM Real Time Operations
Cancellation of Minimum System Load 1 (MSL1) in the VIC Region on 31/12/2023
Cancellation - MSL1 - VIC Region
Refer Market Notice 112936
The MSL1 condition for 31/12/2023 is cancelled at 1600 hrs 31/12/2023
Manager NEM Real Time Operations
Minimum System Load 1 (MSL1) in the VIC Region on 31/12/2023
AEMO has detected that there is an elevated risk of insufficient demand to maintain a secure operating state in the Victorian region from 1100 hrs 31/12/2023 to 1400 hrs 31/12/2023.
Minimum scheduled demand is forecast to be 1300 MW at 1300 hrs and the secure threshold for the forecast operating conditions is 2,000 MW.
AEMO is seeking a market response.
An insufficient market response may require AEMO to take action or intervene to maintain power system security in Victoria. This may result in action such as the direction of scheduled generation, curtailment of non-scheduled generation, and/or a direction to increase operational demand.
Manager NEM Real Time Operations
NEM Local Temperature Alerts for QLD from 27 Dec 2023 to 31 Dec 2023
AEMO's weather service provider has issued forecast temperatures equal to or greater than the NEM Local Temperature Alert Levels for listed weather stations below.
QLD
Dalby Ap (37+ Deg C): 29th Dec
The NEM Local Temperature Alert Levels are:
Launceston Ti Tree Bend: 33 Deg C, Dalby Airport: 37 Deg C, for all other selected weather stations: 39 Deg C.
AEMO requests Market Participants to:
1. review the weather forecast in the local area where their generating units / MNSP converter stations are located and,
2. if required, update the available capacity in their dispatch offers or availability submissions consistent with the forecast temperatures.
Further information is available at:
https://aemo.com.au/energy-systems/electricity/national-electricity-market-nem/nem-forecasting-and-planning/forecasting-and-reliability/projected-assessment-of-system-adequacy/nem-local-temperature-alerts
AEMO Operations Planning
Update - Lightning vulnerable lines in QLD region
Update - Lightning vulnerable lines in QLD region
Refer to AEMO Electricity Market Notice 112794
At 2345 hrs 26/12/2023, the Clare South - Strathmore No.7208 and Strathmore - Clare South tee King Creek No.7128 132 kV Lines tripped.
The cause of the trip was identified as due to Lightning.
In accordance with SO_OP_3715, AEMO now considers the Clare South - Strathmore No.7208 and Strathmore - Clare South tee King Creek No.7128 132 kV Lines to be vulnerable with a category of "Probable" due to Lightning.
Manager NEM Real Time Operations
STPASA - Cancellation of the Forecast Lack Of Reserve Level 1 (LOR1) in the Qld Region on 29/12/2023
The Forecast LOR1 condition in the Qld region advised in AEMO Electricity Market Notice No.112596 is cancelled at 1430 hrs 23/12/2023.
[No LOR condition is currently forecast in the STPASA period.]
Manager NEM RTO
STPASA - Forecast Lack Of Reserve Level 1 (LOR1) in the QLD Region on 29/12/2023
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:
From 1830 hrs to 1930 hrs 29/12/2023.
The forecast capacity reserve requirement is 1057 MW.
The minimum capacity reserve available is 1049 MW.
AEMO Operations
QNI Minor testing (NSW to Qld) 21st December 2023
Refer to market notice 112396
There is an opportunity for testing QNI Minor for flows from NSW to Qld up to 750 MW on Thursday 21st December from 1400 to 1700hrs.
This test includes a trip and reclose of a line in northern NSW.
Please also refer to the published formal QNI minor testing information at the following link:
https://www.aemo.com.au/consultations/current-and-closed-consultations/qld-to-nsw-interconnector-qni-upgrade
Ben Blake
AEMO Operations
PDPASA - Cancellation of the Forecast Lack Of Reserve Level 1 (LOR1) in the NSW Region on 19/12/2023
The Forecast LOR1 condition in the NSW region advised in AEMO Electricity Market Notice No. 112508 is cancelled at 0740 hrs 19/12/2023.
Manager NEM Real Time Operations