Market Notices

76147RECLASSIFY CONTINGENCY01/07/2020 11:41

Cancellation of the reclassification of a Non-Credible Contingency Event: Para-Templers West and Magill-Torrens Island A 275kV lines in SA due to severe weather warning.

AEMO ELECTRICITY MARKET NOTICE.

Cancellation of the reclassification of a non-credible contingency event as a credible contingency event due to severe weather warning.

AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible. There is no longer any severe weather warning in the vicinity of the following lines. Accordingly its classification has reverted to a non-credible contingency event.

Region: SA

Lines: Para-Templers West and Magill-Torrens Island A 275kV lines

Cancellation time: 2340 hrs 01/07/2020

Constraint set(s) revoked: Nil

Refer AEMO Electricity Market Notice 76135

Manager NEM Real Time Operations
76146RECLASSIFY CONTINGENCY01/07/2020 11:14

Cancellation 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.

AEMO ELECTRICITY MARKET NOTICE

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: VIC1

Lines: Eildon PS - Mt Beauty No.1 220 kV and Eildon PS - Mt Beauty No.2 220 kV

Cancellation time: 01/07/2020 23:14

Constraint set(s) revoked:
NONE

Refer AEMO Electricity Market Notice 76144

Auto-generated on behalf of Manager NEM Real Time Operations
76145GENERAL NOTICE01/07/2020 09:52

Cancellation - Non-credible contingency event more likely to occur due to existence of abnormal conditions - SA region


AEMO ELECTRICITY MARKET NOTICE.

Abnormal conditions advised in AEMO Electricity Market Notice 76143 have ceased to impact the likelihood of a non-credible event occurring as at 2145 hrs 01/07/2020.

Constraint set I-VS_250 revoked at 2145 hrs.

Manager NEM Real Time Operations
76144RECLASSIFY CONTINGENCY01/07/2020 09:11

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.

AEMO ELECTRICITY MARKET NOTICE

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: 01/07/2020 21:11 until further notice

Constraint set(s) invoked:
NONE

Auto-generated on behalf of Manager NEM Real Time Operations
76143GENERAL NOTICE01/07/2020 06:15

Non-credible contingency event more likely to occur due to existence of abnormal conditions - SA region

AEMO ELECTRICITY MARKET NOTICE.

AEMO has identified that a non-credible contingency event is more likely to occur because of the existence of abnormal conditions, namely damaging winds in the South Australia region.

There is a possibility of severe weather impacting multiple transmission elements in its vicinity.

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.

Constraint set I-VS_250 invoked at 1815 hrs 01/07/2020 until further notice.


Manager NEM Real Time Operations



76142MARKET INTERVENTION01/07/2020 04:34

Direction - SA region - 01/07/2020

AEMO ELECTRICITY MARKET NOTICE.

Direction - SA region - 01/07/2020

In accordance with section 116 of the National Electricity Law, AEMO has issued a direction to a participant in the SA region. For the purposes of the National Electricity Rules this is a direction under clause 4.8.9(a).

The direction was necessary to maintain the power system in a secure operating state.

AEMO may issue or revoke additional directions in order to meet the current requirement, unless sufficient market response is provided. A further market notice will be issued when all directions related to this requirement have been cancelled.

The issue of the direction commences an AEMO intervention event. AEMO declares all dispatch intervals during the event to be intervention dispatch intervals, commencing from the interval ending 1635 hrs on 01/ 07/ 2020.

Intervention pricing does not apply to this AEMO intervention event.

Manager NEM Real Time Operations




76140MARKET INTERVENTION01/07/2020 04:33

Cancellation - AEMO Intervention Event - Intervention dispatch intervals - Direction SA region - 01/07/2020

AEMO ELECTRICITY MARKET NOTICE

Cancellation - AEMO Intervention Event - Intervention dispatch intervals - Direction SA region - 01/07/2020

Refer Market Notice 76131

The AEMO Intervention Event and all associated directions are cancelled from 1630 hrs 01/07/2020

Manager NEM Real Time Operations



76137MARKET SYSTEMS01/07/2020 03:51

CHG0059787:Norwest MarketNet F5 LTM : Scheduled Maintenance for VM upgrade / tuning and Software Upgrade

Market Notice

Change Number: CHG0059787

Notification issued to: Market Notice

Notification Type: Initial

Change Type: Normal

Service/ Component: Local Area Network

Change Title: Norwest MarketNet F5 LTM : Scheduled Maintenance for VM upgrade / tuning and Software Upgrade

Change Start Date & Time: 07/07/2020 09:00:00 AEST

Change End Date & Time: 07/07/2020 17:00:00 AEST

Outage Start Date & Time:

Outage End Date & Time:

Change Description:

Planned maintenance affecting the AEMO Market Network.

Environment: Production

Participant Impact and Requirements:

Planned maintenance will be conducted on core network infrastructure within the AEMO Market Network in Norwest.

No outage or impact is expected, however AEMO recommends that all market participants with site to site VPN connections currently connected via Brisbane to switch these connections to the Sydney site as a precaution.

Participants connecting via IPWAN and/or SSL VPN will be automatically connected to the Sydney site and do not need to take any action.

Support Information:
Report any impacts to the AEMO Information and Support Hub or on External 1300 236 600.

76136MARKET INTERVENTION01/07/2020 02:48

Possible intervention to manage power system security in South Australia (SA) Region

AEMO ELECTRICITY MARKET NOTICE

Possible intervention to manage power system security in South Australia (SA) Region

The synchronous generating units expected to be synchronised in SA from 0030 hrs 02/07/2020 to 0630 hrs 02/07/2020 in Pre-dispatch published at 1430 hrs 01/07/2020 are inadequate to maintain sufficient system strength in SA and hence a secure operating state.

AEMO currently estimates that, in the absence of sufficient market response by 1630 hrs 01/07/2020, AEMO may need to intervene by issuing a direction requiring one or more SA synchronous generating unit(s) to operate or remain synchronised to maintain power system security in SA.

Manager NEM Real Time Operations






X
Cookies help us improve your website experience.
By using our website, you agree to our use of cookies.
Confirm