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Studies / Agreements

Studies

Title	Date	Description
WGIP Investigation 1 (Part A)\| [369kB]	May 2007	Effect of unpredictability of wind generation on pre-dispatch processes.
WGIP Investigation 1 (Part B) [1.4MB]	May 2008	Effect of unpredictability of wind generation output on scheduling.
WGIP Investigation 2 [396kB]	May 2007	Effect of wind generation on dispatch.
WGIP Investigation 3 [657kB]	May 2007	Effect of wind generation variability on asset loading.
WGIP Investigation 4 [1.4MB]	May 2007	Effect of wind generation on ability to manage system voltages within voltage quality targets.
WGIP Investigation 5 [616kB]	May 2007	Effect of wind generation on management of frequency excursions.
WGIP Investigation 6 [1.2MB]	May 2007	Effect of wind generation on small disturbance voltage stability.
WGIP Investigation 7 [4.2MB]	May 2008	Effect of wind generation on transient stability.
WGIP Investigation 8 [3.4MB]	May 2008	Effect of wind generation on small signal stability.
WGIP Investigation 9 [1.3MB]	May 2008	Effect of wind generation on reactive power contribution and dynamic voltage responses.
SFT Constraint Publication Specification [110kB]	Jul 2006	Summarises the proposal for publishing security constraint information from late 2007 when the System Operator introduces a new application to automatically generate n-1 thermal security constraints.
Tactical Wind Generation Project [554kB]	Dec 2005	Rationale for proposed rule changes to accommodate the connection of further wind generation until the Wind Generation Investigation Project is complete.
Manawatu Wind Generation [856kB]	Sep 2005	Observed Impacts on the Scheduling and Dispatch Processes.

Agreements

Title	Date	Description
LQA - Signed Agreement [341kB]	26 Feb 2004	The Electricity Commission’s Common Quality Advisory Group proposed the EGR’s be change to require publication of “Local Quality Agreements” (LQA’s). This was intended to provide greater transparency of where there are agreements for voltages to be managed to higher limits that the default AOPO limits in Part C. However both Transpower and the System Operator have agreed to publish the transitional LQA agreement the parties entered into immediately prior to the EGR’s becoming effective. This is intended to negate the need for a rule change. Publication of this agreement and the schedule will considerably improve transparency for asset owners on the voltage profiles the system operator manages within over agreed parts of the grid.
LQA - Special Condition Offer [142kB]	26 Feb 2004