Contact Us | Join Us | Subscribe | Visit www.transpower.co.nz

Automatic Under-Frequency Load Shedding (AUFLS) Review

Project Update

Feb 2011: The second stage of the AUFLS review is being carried out as part of the Under-Frequency Management (UFM) Project; this is to ensure the inter-dependencies of the under-frequency products are accounted for. The UFM project has been commenced and more information on the work can be found on the UFM Project page. Please check the UFM page for all future AUFLS updates.

Background

The System Operator is undertaking a review of the Automatic Under-Frequency Load Shedding (AUFLS) System during 2010.  This page will be used as a primary means to keep interested parties informed of progress.  Subscribe to the Market Section of our web site to be kept informed on this project.

Technical Review and Survey

The AUFLS Technical Report is complete and has been published in the  report section on this site. There are also links to each document futher down this page in the Published AUFLS Report Section.

The report details the findings from the technical studies and survey work, and covers the following areas:

• The purpose of the AUFLS
• A history of AUFLS in New Zealand
• A comparison of international reserve requirements and AUFLS settings
• Literature review - main findings from international under-frequency events and the use of AUFLS
• Results from the technical studies including the performance of the existing AUFLS scheme
• Options and next steps

Timetable

Indicative timetable as at Aug 2010

Published AUFLS Report

The following documents have been published as a result of the AUFLS Review:

Related Information