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… Summary Report System Security Forecast 2024 Version: 1 Date: … is crucial for guiding the System Operator’s strategic planning and operational decisions, ensuring that we are … and STATCOMs in place, there is now less need to switch off transmission circuits during periods of light load to manage …

… and Part E: Frequency Principal Performance Obligations. REPORT STRUCTURE The System Security Forecast (SSF) analysis … aligns with the forecast developed for Transpower’s 2022 Transmission Planning Report (TPR), however, is aligned with the Grid …

… and reduce further with new industrial load in Southland. • transmission constraints are most likely to bind across the … Lower North Island. • six previously identified constraints reported in 2020 have or will be mitigated through completed … the New Zealand Generation Balance, the Transmission Planning Report, and other regular updates on the market and …

… south transfer might not be achievable due to North Island transmission and generation constraints following the … g e | 6 2. SYSTEM CONDITIONS Transpower’s 2022 Transmission Planning Report (TPR) has identified four system conditions that …

… supplied to the region through 110 kV and 66 kV transmission circuits, with two interconnecting transformers … in August 2023. Please refer to the Grid Zone 10 SSF report for more information. SYSTEM SECURITY FORECAST: GRID … 5.1 LIGHT LOAD MITIGATION High voltages can occur when the transmission network is lightly loaded, particularly in …

… scenarios as the objective of the analysis is to test the transmission system’s limitations. These are during winter … the New Zealand grid is invaluable, and guidance for this report was solicited from those most familiar with these … the forecast developed for Transpower’s 2023 Transmission Planning Report (TPR) is used in these studies. However, it …

… 220 kV grid backbone 2. SYSTEM CONDITIONS Transpower’s 2022 Transmission Planning Report (TPR) identified five system conditions which …

… of the committed project test set out in Part B of this report. Contingency Plan A plan that identifies power system … Code. Contingent events include the loss of any single transmission circuit or generating unit, but do not include … AOPO Asset Owner Performance Obligations APR Annual Planning Report AUFLS Automatic Under-Frequency Load …

… and voltage stability issues. For these contingencies, the report notes both future grid projects that will resolve the … troughs In the previous SSF, assessments indicated several transmission circuits would need to be removed from service … of new reactors and STATCOMs, the need to switch off transmission circuits during light load has decreased. …

… in August 2023. Please refer to the Grid Zone 10 SSF report for more information. SYSTEM SECURITY FORECAST: GRID … 5.1 LIGHT LOAD MITIGATION High voltages can occur when the transmission network is lightly loaded. Particularly in areas that contain high voltage cables and long transmission circuits. This issue can be managed …