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62962GENERAL NOTICE28/05/2018 12:31:08 PM
Planned outage of Tailem Bend - Cherry Garden 275kV line in the SA region beginning on 28/06/2018
AEMO ELECTRICITY MARKET NOTICE
The Tailem Bend - Cherry Garden 275kV line in South Australia (SA) region is planned to be out of service from 0800 hrs on 28/06/2018 to 1730 hrs on 01/07/2018.
During this outage, SA will remain connected to the rest of the NEM via the Tungkillo - Tailem Bend 275kV line and the 132kV network.
A credible contingency event on the Tungkillo - Tailem Bend 275kV line during this planned outage will sever the 275kV connections between the NEM and SA. If SA remains connected to the NEM via the 132kV network, this will pose a system security issue.
If the above credible contingency occurs, 35 MW of raise and lower regulation FCAS will be sourced from within SA.
If this occurs, AEMO will take all necessary steps as outlined in Section 6.1 of SO-OP-3715 Power System Security Guideline to separate the 132kV network and therefore manage an orderly separation of SA from the NEM.
Mya San
AEMO Operations
The Tailem Bend - Cherry Garden 275kV line in South Australia (SA) region is planned to be out of service from 0800 hrs on 28/06/2018 to 1730 hrs on 01/07/2018.
During this outage, SA will remain connected to the rest of the NEM via the Tungkillo - Tailem Bend 275kV line and the 132kV network.
A credible contingency event on the Tungkillo - Tailem Bend 275kV line during this planned outage will sever the 275kV connections between the NEM and SA. If SA remains connected to the NEM via the 132kV network, this will pose a system security issue.
If the above credible contingency occurs, 35 MW of raise and lower regulation FCAS will be sourced from within SA.
If this occurs, AEMO will take all necessary steps as outlined in Section 6.1 of SO-OP-3715 Power System Security Guideline to separate the 132kV network and therefore manage an orderly separation of SA from the NEM.
Mya San
AEMO Operations
62954GENERAL NOTICE27/05/2018 11:52:22 AM
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 28/05/2018 in Pre-dispatch published at 1130 hrs 27/05/2018 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 1800 hrs 27/05/2018, AEMO may need to intervene by issuing a direction requiring one or more SA synchronous generating unit(s) to operate or remain synchronised from 0030 hrs 28/05/2018, to maintain power system security in SA.
Manager NEM Real Time Operations
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 28/05/2018 in Pre-dispatch published at 1130 hrs 27/05/2018 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 1800 hrs 27/05/2018, AEMO may need to intervene by issuing a direction requiring one or more SA synchronous generating unit(s) to operate or remain synchronised from 0030 hrs 28/05/2018, to maintain power system security in SA.
Manager NEM Real Time Operations
62940GENERAL NOTICE25/05/2018 01:40:29 PM
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 0100 hrs 26/05/2018 in Pre-dispatch published at 1300 hrs 25/05/2018 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 1400 hrs 25/05/2018, AEMO may need to intervene by issuing a direction requiring one or more SA synchronous generating unit(s) to operate or remain synchronised from 0100 hrs 26/05/2018 to maintain power system security in SA.
Manager NEM Real Time Operations
Possible intervention to manage power system security in South Australia (SA) Region
The synchronous generating units expected to be synchronised in SA from 0100 hrs 26/05/2018 in Pre-dispatch published at 1300 hrs 25/05/2018 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 1400 hrs 25/05/2018, AEMO may need to intervene by issuing a direction requiring one or more SA synchronous generating unit(s) to operate or remain synchronised from 0100 hrs 26/05/2018 to maintain power system security in SA.
Manager NEM Real Time Operations
62938GENERAL NOTICE24/05/2018 04:44:38 PM
Update- HIGH IMPACT OUTAGE - Hazelwood - Loy Yang PS 3 500kV LINE (VIC ) Region - 24/05/2018
AEMO ELECTRICITY MARKET NOTICE
Refer market notice 62937
The Hazelwood - Loy Yang PS 3 500kV LINE in the VIC region has been returned to service at 1636 hrs.
Manager NEM Real Time Operations
Refer market notice 62937
The Hazelwood - Loy Yang PS 3 500kV LINE in the VIC region has been returned to service at 1636 hrs.
Manager NEM Real Time Operations
62937GENERAL NOTICE24/05/2018 03:39:42 PM
HIGH IMPACT OUTAGE - Hazelwood - Loy Yang PS 3 500kV LINE (VIC ) Region - 24/05/2018
AEMO ELECTRICITY MARKET NOTICE
HIGH IMPACT OUTAGE - Hazelwood - Loy Yang PS 3 500kV LINE (VIC ) Region - 24/05/2018
The planned outage of Hazelwood - Loy Yang PS 3 500kV LINE in the VIC region has been extended to 1800 hrs 24/05/2018.
The power system will be operated in a secure operating state during this outage.
Following a contingency event AEMO has determined the forecast Victorian demand will be 200 MW in excess of the maximum supportable demand.
If the contingent event occurs up to 200 MW may have to be load shed to return to secure operating state .
Manager NEM Real Time Operations
HIGH IMPACT OUTAGE - Hazelwood - Loy Yang PS 3 500kV LINE (VIC ) Region - 24/05/2018
The planned outage of Hazelwood - Loy Yang PS 3 500kV LINE in the VIC region has been extended to 1800 hrs 24/05/2018.
The power system will be operated in a secure operating state during this outage.
Following a contingency event AEMO has determined the forecast Victorian demand will be 200 MW in excess of the maximum supportable demand.
If the contingent event occurs up to 200 MW may have to be load shed to return to secure operating state .
Manager NEM Real Time Operations
62935GENERAL NOTICE24/05/2018 02:56:54 PM
Update - Planned frequency tests in Tasmania on 24/05/2018
AEMO ELECTRICITY MARKET NOTICE.
Refer AEMO Electricity Market Notice 62930
Testing was completed at 15:00 hrs.
Manager NEM Real Time Operations
Refer AEMO Electricity Market Notice 62930
Testing was completed at 15:00 hrs.
Manager NEM Real Time Operations
62930GENERAL NOTICE24/05/2018 01:39:02 PM
Planned frequency tests in Tasmania on 24/05/2018
AEMO ELECTRICITY MARKET NOTICE
Frequency tests in Tasmania have been arranged between AEMO and relevant participants.
Testing involves making selective changes to AEMO's AGC control system, and to some of generating units' governors controls in Tasmania to measure the effect on Tasmanian frequency control under normal operating conditions.
Scheduled time of the test is between 1100 hrs - 1500 hrs on 24/05/2018
Market Participants in mainland regions will not be affected by the tests.
Manager NEM Real Time Operations
Frequency tests in Tasmania have been arranged between AEMO and relevant participants.
Testing involves making selective changes to AEMO's AGC control system, and to some of generating units' governors controls in Tasmania to measure the effect on Tasmanian frequency control under normal operating conditions.
Scheduled time of the test is between 1100 hrs - 1500 hrs on 24/05/2018
Market Participants in mainland regions will not be affected by the tests.
Manager NEM Real Time Operations
62924GENERAL NOTICE23/05/2018 03:01:43 PM
Update - Planned frequency tests in Tasmania on 23/05/2018
AEMO ELECTRICITY MARKET NOTICE.
Refer AEMO Electricity Market Notice 62917
Testing was completed at 15:00 hrs.
Manager NEM Real Time Operations
Refer AEMO Electricity Market Notice 62917
Testing was completed at 15:00 hrs.
Manager NEM Real Time Operations
62920GENERAL NOTICE23/05/2018 02:12:33 PM
Update - Possible intervention to manage power system security in South Australia (SA) Region
AEMO ELECTRICITY MARKET NOTICE
Refer AEMO Electricity Market Notice No. 62914
The synchronous generating units expected to be synchronised in SA from 0100 hrs 24/05/18 to 1400 hrs 24/05/18 in Pre-dispatch published at 1330 hrs 23/05/18 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 1800 hrs 23/05/18, AEMO may need to intervene by issuing a direction requiring one or more SA synchronous generating unit(s) to operate or remain synchronised from 0100 hrs 24/05/18 to 1400 hrs 24/05/18, to maintain power system security in SA.
Manager NEM Real Time Operations
Refer AEMO Electricity Market Notice No. 62914
The synchronous generating units expected to be synchronised in SA from 0100 hrs 24/05/18 to 1400 hrs 24/05/18 in Pre-dispatch published at 1330 hrs 23/05/18 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 1800 hrs 23/05/18, AEMO may need to intervene by issuing a direction requiring one or more SA synchronous generating unit(s) to operate or remain synchronised from 0100 hrs 24/05/18 to 1400 hrs 24/05/18, to maintain power system security in SA.
Manager NEM Real Time Operations