eprintid: 210
rev_number: 4
eprint_status: archive
userid: 6
dir: disk0/00/00/02/10
datestamp: 2009-02-18
lastmod: 2015-05-29 19:49:28
status_changed: 2009-04-15 09:25:18
type: report
metadata_visibility: show
item_issues_count: 0
creators_name: Whiten, Bill
creators_name: Fulford, Glenn
creators_name: Hickson, Roslyn
creators_name: Pritchard, Geoff
contributors_name: Goodwin, Doug
contributors_name: Liu, Cynthia
title: The response of power systems to autonomous ``grid friendly'' devices
ispublished: pub
subjects: utilities
studygroups: misg25
companyname: Transpower NZ
full_text_status: public
abstract: The aim of this study was to examine whether so-called ``grid friendly'' devices can have undesirable effects on the power grid, and what design of grid friendly device is best suited to providing additional protection to the grid. This report first develops a simplified model for a power grid, looks at the conditions for stable operation of grid friendly devices, examines alternative designs, and makes recommendations for the design of grid friendly devices.
problem_statement: The New Zealand power system is relatively small. An installed capacity is of 8500MW with a peak demand of 6900MW and a minimum demand of 2400MW. It is a credible scenario that sufficient Grid Friendly devices could be installed on the New Zealand power system such that the aggregated response of these devices will significantly alter the dynamic response of the system. 

Transpower NZ Ltd proposes that the MISG consider as an initial approach to the issues raised by the employment of Grid Friendly devices the following question:

What methodology should be used to determine an optimal characteristic for Grid Friendly devices connected to a relatively small power system? Such methodology should consider both passive and adaptive response characteristics.

Transpower proposes to provide details of the dynamic response required of the system and data for the dynamic response of the system when disturbed under various system loading conditions as a starting point for this study.
date: 2008
date_type: published
pages: 21
citation:   Whiten, Bill and Fulford, Glenn and Hickson, Roslyn and Pritchard, Geoff  (2008) The response of power systems to autonomous ``grid friendly'' devices.  [Study Group Report]     
document_url: http://miis.maths.ox.ac.uk/miis/210/1/misg2008transpower.pdf