Performance Assessment and Management of Large Wind Farms under Abnormal Grid Operating Conditions
type: CreativeWork
description: Increased penetration of wind generation into high voltage transmission systems necessitates the development of grid integration standards. Wind farms during normal system operation have been well assessed for impacts like forecasting, reliability, power quality, and transient stability following its large scale integration. Fault responses and protection schemes are currently not standardized and neither following consistent practices for existing wind farms which provides research opportunities. This is because different wind generation technologies exhibit diverse dynamic characteristics following grid disturbances, compared to synchronous generators. In this research, wind farms are illustrative of increasing influence of renewable on grids with several large scale deployments being integrated with transmission networks. The New Zealand (NZ) grid has been used in this thesis to develop methodology for ride-through criteria. During abnormal operations, ride-through requirement is prerequisite to handle large grid disturbance. Network characteristics and their interaction with available wind technologies also impact dynamic behaviour. One of the most important integration criteria for large wind farms are Fault Ride-through (FRT). Development of the FRT voltage envelope depends on transmission network characteristics along with considerations like contingency and existing protective relay settings. The first objective utilises the real New Zealand North Island network diagrams and data to test the proposed methodology, and summarise the results. Finally proposed actual voltage ride-through criteria for New Zealand grids (North and South Islands) are also presented with international benchmarking. To address the second objective, Type-1, Type-2 and Type-3 machines are modelled and connected to the same Point of Common Coupling (PCC). Large scale grid disturbance scenarios are created and identical faults are exposed to individual wind farm type. Fault current dynam…
abstract: Increased penetration of wind generation into high voltage transmission systems necessitates the development of grid integration standards. Wind farms during normal system operation have been well assessed for impacts like forecasting, reliability, power quality, and transient stability following its large scale integration. Fault responses and protection schemes are currently not standardized and neither following consistent practices for existing wind farms which provides research opportunities. This is because different wind generation technologies exhibit diverse dynamic characteristics following grid disturbances, compared to synchronous generators. In this research, wind farms are illustrative of increasing influence of renewable on grids with several large scale deployments being integrated with transmission networks. The New Zealand (NZ) grid has been used in this thesis to develop methodology for ride-through criteria. During abnormal operations, ride-through requirement is prerequisite to handle large grid disturbance. Network characteristics and their interaction with available wind technologies also impact dynamic behaviour. One of the most important integration criteria for large wind farms are Fault Ride-through (FRT). Development of the FRT voltage envelope depends on transmission network characteristics along with considerations like contingency and existing protective relay settings. The first objective utilises the real New Zealand North Island network diagrams and data to test the proposed methodology, and summarise the results. Finally proposed actual voltage ride-through criteria for New Zealand grids (North and South Islands) are also presented with international benchmarking. To address the second objective, Type-1, Type-2 and Type-3 machines are modelled and connected to the same Point of Common Coupling (PCC). Large scale grid disturbance scenarios are created and identical faults are exposed to individual wind farm type. Fault current dynam…
author: Qureshi, Waqar
license: https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm
date published: 2013
date modified: 2026-07-24T01:05:49Z
provider: University of Auckland
publisher: Networked Digital Library of Theses and Dissertations
type: WebPage
source organization: ResearchSpace@Auckland

PropertyValue
property ID: Handle
value: https://hdl.handle.net/2292/21304