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Transient faults in wind energy conversion systems: analysis, modelling methodologies and remedies

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journal contribution
posted on 2018-09-01, 00:00 authored by U Abubakar, S Mekhilef, H Mokhlis, Mohammadmehdi Seyedmahmoudian, Ben HoranBen Horan, A Stojcevski, H Bassi, M J H Rawa
This paper presents an in-depth review of classical and state-of-the-art models for analysing the transient stability in wind energy conversion systems. Various transient simulation models for a number of wind turbine generator (WTG) configurations are introduced, under different disturbances. The mitigation is achieved, by manipulating the generator speed and power electronics control, whereas the protection is implemented using conventional, intelligent or digital relays for the safety of sensitive components, in case of transient fault occurrence. The various control systems in WECS are basically employed to transform and regulate the varying frequency, owing to the stochastic nature of wind speed, to the standard 50-Hz or 60-Hz frequency for coupling to an existing electrical utility grid. It has been observed that the control and protection schemes in wind energy systems are concurrently applied. Transient faults in WECSs are a dominant power quality problem especially in the doubly-fed induction generator (DFIG), and often classified as overcurrent or overvoltage transients. These transients are measured using the transient stability index and analysed using the EMTDC/PSCAD software. In addition, the inertia of the rotating masses of wind turbine generators is often characterized by a transient torque, which generates oscillations in power systems.

History

Journal

Energies

Volume

11

Issue

9

Article number

2249

Pagination

1 - 33

Publisher

MDPI

Location

Basel, Switzerland

eISSN

1996-1073

Language

eng

Publication classification

C Journal article; C1 Refereed article in a scholarly journal

Copyright notice

2018, The Authors