Darwin Katherine, Alice Springs and Tennant Creek - System Strength Studies

The objective of the system strength studies is to identify the forecasted system strength in consideration with the proposed renewable generation plan and displacement of the existing synchronous generators, recommended options to maintain system security along a system load and generation timeline in accordance with the requirements of the Network Technical Code (NTC).

The 3 regulated networks of Darwin-Katherine, Alice Springs and Tennant Creek must all be assessed. The methodology defined in the process below is to be established and approved by PWC before commencing with the execution of the studies. It is anticipated that the execution of the studies can occur in parallel, prioritizing a start on Darwin-Katherine, then Alice Springs and finally Tennant Creek. 

The due date to complete the system strength studies is October 2023 for the purposes of including content into the 2023 TDAPR report.

Power system engineering services are required to undertake the system strength studies according to the “Darwin Katherine, Alice Springs and Tennant Creek – System Strength Studies SOW – Rev E”. Performance standards will be measured against the deliverables list provided in the SOW. The durations allowed to complete each part of the scope are from date of award, to be completed in sequence:

Part 1 – Development of Study Methodology – 2 months from date of award.

Part 2 – Execute System Strength Studies – 1 months from completion of Part 1

Part 3 – Options Analysis for Mitigation Measures – 1 months from completion of Part 2

Part 2 and Part 3 for each regulated grid start and durations are flexible, however the expectation is that all work is completed by October 2023.