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Non-credible contingency event more likely to occur due to existence of abnormal conditions NSW region. Tuesday 31 December 2019.
AEMO has identified that a non-credible contingency event is more likely to occur in the NSW region because of the existence of abnormal conditions, namely severe and extreme bushfire conditions for Tuesday 31 December 2019.
Extreme Fire Danger
Australian Capital Territory
Illawarra/Shoalhaven and Southern Ranges
Severe Fire Danger
Greater Hunter, Greater Sydney Region, Far South Coast, Monaro Alpine,
Central Ranges and Southern Slopes
As at the time of this notice there is a possibility of bushfires impacting multiple transmission elements in NSW on Tuesday 31 December 2019.
Conditions can change rapidly and potentially impacted plant may change. Further notices will only be published to advise of any reclassification, or when the abnormal conditions have ceased to impact the likelihood of a non-credible event occurring.
Manager NEM Real Time Operations
Reduction in load relief for mainland regions - 2nd January 2020
Refer to market notices 69914, 70206, 70441, 70645, 70930, 71287, 71597 and 71868.
On 2nd January 2020 at 1100hrs AEMO will reduce the load relief used in the FCAS constraint equations from 0.7% to 0.6% for all mainland regions. This will increase the amount of contingency FCAS enabled by AEMO.
This change is a part of AEMO's review of frequency in the NEM. The mainland load relief will be slowly reduced. Details were provided to market participants in an industry teleconference on 16 August 2019 and an update published on AEMO's website on 19th November. For more information refer to: https://www.aemo.com.au/Electricity/National-Electricity-Market-NEM/Security-and-reliability/Ancillary-services/Load-relief
There will be no change at this stage to the Tasmanian load relief.
Ben Blake
AEMO Operations
Market reporting for forecast extreme temperature in the South Australia region on 03/01/2020
AEMO's weather service provider has issued forecast temperatures for South Australia region that are equal to or greater than the Generation Capacity Reference Temperatures.
On 03/01/2020: Maximum forecast temperature 45 degrees C at Adelaide for the Adelaide area.
AEMO requests Market Participants to:
1. review the weather forecast in the local area where their generating plants are located and,
2. if required, update the generation levels in their dispatch offers consistent with the forecast temperatures.
Details on Generation Capacity Reference Temperatures can be accessed using the following link to AEMO website:
http://www.aemo.com.au/Electricity/Planning/Related-Information/Generation-Information
Generation Capacity Reference Temperatures:
QUEENSLAND - BRISBANE AREA 37 degrees C.
NEW SOUTH WALES - SYDNEY AREA 42 degrees C.
VICTORIA - MELBOURNE AREA 41degrees C.
SOUTH AUSTRALIA - ADELAIDE AREA 43 degrees C.
TASMANIA - GEORGE TOWN 30 degrees C.
BASSLINK- (Latrobe Valley Airport 43 degrees C AND GEORGE TOWN 33 degrees C)
Ryan Burge
AEMO Operations
Market reporting for forecast extreme temperature in the Latrobe Valley region on 30/12/2019
AEMO's weather service provider has issued forecast temperatures for Latrobe Valley that are equal to or greater than the Generation Capacity Reference Temperatures:
On 30/12/2019: Maximum forecast temperature 43 degrees C at Traralgon for the Latrobe Valley area.
AEMO requests Market Participants to:
1. review the weather forecast in the local area where their generating plants are located and,
2. if required, update the generation levels in their dispatch offers consistent with the forecast temperatures.
Details on Generation Capacity Reference Temperatures can be accessed using the following link to AEMO website:
http://www.aemo.com.au/Electricity/Planning/Related-Information/Generation-Information
Generation Capacity Reference Temperatures:
QUEENSLAND - BRISBANE AREA 37 degrees C.
NEW SOUTH WALES - SYDNEY AREA 42 degrees C.
VICTORIA - MELBOURNE AREA 41 degrees C.
SOUTH AUSTRALIA - ADELAIDE AREA 43 degrees C.
TASMANIA - GEORGE TOWN 30 degrees C.
BASSLINK- (Latrobe Valley Airport 43 degrees C AND GEORGE TOWN 33 degrees C)
Ryan Burge
AEMO Operations
Constraint Action to manage Power System Security in Qld Region - 27/12/2019
In order to manage power system security during the outage of Calvale - Halys 8810 and 8811 275 kV Transmission Lines, AEMO invoked the following constraint sets.
Q-CS_1000 from 11:20 hrs to 11:25 hrs
Q-CS_900 from 11:25 hrs to 11:30 hrs
Q-CS_800 from 11:30 hrs to 11:35 hrs
These Constraint Sets contain equations which limit the upper transfer limit on the Qld Central to Qld South cut-set.
Manager NEM Real Time Operations
Market reporting for forecast extreme temperature in the New South Wales region on 31/12/2019 and Victoria region on 30/12/2019 and elevated temperatures in South Australia region
AEMO's weather service provider has issued forecast temperatures for New South Wales (NSW) region and Victoria (VIC) region that are equal to or greater than the Generation Capacity Reference Temperatures:
NSW
On 31/12/2019: Maximum forecast temperature 43degrees C at Bankstown for the Sydney area.
VIC
On 30/12/2019: Maximum forecast temperature 42degrees C at Melbourne for the Melbourne area.
Also, note that elevated temperatures are forecast in South Australia region from 27/12/2019 to 30/12/2019.
Further updates to this advice may not be provided.
AEMO requests Market Participants to:
1. review the weather forecast in the local area where their generating plants are located and,
2. if required, update the generation levels in their dispatch offers consistent with the forecast temperatures.
Details on Generation Capacity Reference Temperatures can be accessed using the following link to AEMO website:
http://www.aemo.com.au/Electricity/Planning/Related-Information/Generation-Information
Generation Capacity Reference Temperatures:
QUEENSLAND - BRISBANE AREA 37 degrees C.
NEW SOUTH WALES - SYDNEY AREA 42 degrees C.
VICTORIA - MELBOURNE AREA 41 degrees C.
SOUTH AUSTRALIA - ADELAIDE AREA 43 degrees C.
TASMANIA - GEORGE TOWN 30 degrees C.
BASSLINK- (Latrobe Valley Airport 43 degrees C AND GEORGE TOWN 33 degrees C)
Harmohan Singh
AEMO Operations
Semi-scheduled and intermittent non-scheduled generation availability under extreme high temperature
Refer AEMO Electricity Market Notice 72013.
AEMO's weather service provider is forecasting extreme high ambient temperatures across NEM regions. AEMO reminds semi-scheduled and intermittent non-scheduled generators to advise AEMO of any reduction in available capacity caused by temperature derating.
For any reduction in availability please ensure to:
1. Update SCADA Local Limit or, if unavailable, advise AEMO control room to implement a quick constraint to the reduced available capacity level; and
2. Update intermittent generation availability in the EMMS Portal (https://portal.prod.nemnet.net.au/#/signin) to reflect reduced plant availability as per NER 3.7B(b).
Refer to the AER Rebidding and Technical Parameters Guideline: https://www.aer.gov.au/system/files/AER%20Final%20Guidline%20-%20Rebidding%20and%20Technical%20Parameters%20Guideline%20-%2028%20February%202017.pdf
AEMO Operations
Updated generator combinations for SA system strength
Updated generator combinations for SA system strength
AEMO has investigated the impact of the Barker Inlet generator on system strength in South Australia. Five additional generator combinations have been added, these are:
LOW_51 - 3 x Torrens Island B units + Osborne GT/ST + 8 x Barker Inlet units
LOW_52 - 1 x Torrens Island B unit + 1 x Pelican Point GT/ST units + 4 x Barker Inlet units
LOW_53 - 2 x Torrens Island B units + Quarantine 5 + Dry Creek 1-3 + 6 x Barker Inlet units
LOW_54 - 1 x Torrens Island B unit + Osborne GT & ST + Mintaro + 8 x Barker Inlet units
LOW_55 - Quarantine 5 + Dry Creek 1-3 + Mintaro + 8 x Barker Inlet units
For more information refer to the updated limits advice:
https://www.aemo.com.au/-/media/Files/Electricity/NEM/Security_and_Reliability/Congestion-Information/2019/Transfer-Limit-Advice-System-Strength.pdf
Ben Blake
AEMO Operations
Market reporting for forecast extreme temperature in the New South Wales on 30/12/2019 and South Australia region on 28/12/2019 and 29/12/2019 and elevated temperatures in New South Wales and Victoria regions
AEMO's weather service provider has issued forecast temperatures for New South Wales (NSW) region and South Australia (SA) region that are equal to or greater than the Generation Capacity Reference Temperatures:
NSW
On 30/12/2019: Maximum forecast temperature 42degrees C at Bankstown for the Sydney area.
SA
On 28/12/2019: Maximum forecast temperature 43degrees C at Adelaide for the Adelaide area.
On 29/12/2019: Maximum forecast temperature 43degrees C at Adelaide for the Adelaide area.
Also, note that elevated temperatures are forecast in New South Wales and Victoria regions from 28/12/2019 to 30/12/2019.
Further updates to this advice may not be provided.
AEMO requests Market Participants to:
1. review the weather forecast in the local area where their generating plants are located and,
2. if required, update the generation levels in their dispatch offers consistent with the forecast temperatures.
Details on Generation Capacity Reference Temperatures can be accessed using the following link to AEMO website:
http://www.aemo.com.au/Electricity/Planning/Related-Information/Generation-Information
Generation Capacity Reference Temperatures:
QUEENSLAND - BRISBANE AREA 37 degrees C.
NEW SOUTH WALES - SYDNEY AREA 42 degrees C.
VICTORIA - MELBOURNE AREA 41 degrees C.
SOUTH AUSTRALIA - ADELAIDE AREA 43 degrees C.
TASMANIA - GEORGE TOWN 30 degrees C.
BASSLINK- (Latrobe Valley Airport 43 degrees C AND GEORGE TOWN 33 degrees C)
Harmohan Singh
AEMO Operations