NDLI: Measurement-based method for wind farm power system oscillation monitoring

Content Provider	IEEE Xplore Digital Library
Author	Xueqin Liu Littler, T. Kennedy, J.
Copyright Year	2009
Description	Author affiliation: Electric Power and Energy Research Group, Ashby Building, The Queen's University Belfast, Stranmillis Road, Belfast, BT9 5AH, Northern Ireland, UK (Xueqin Liu; Littler, T.; Kennedy, J.)
Abstract	The global increase in the penetration of renewable energy is pushing electrical power systems into uncharted territory, especially in terms of transient and dynamic stability. In particular, the greater penetration of wind generation in European power networks is, at times, displacing a significant capacity of conventional synchronous generation with fixed-speed induction generation and now more commonly, doubly-fed induction generators. The impact of such changes in the generation mix requires careful monitoring to assess the impact on transient and dynamic stability. This paper presents a measurement based method for the early detection of power system oscillations, with attention to mode damping, in order to raise alarms and develop strategies to actively improve power system dynamic stability and security. A method is developed based on wavelet transform and support vector data description (SVDD) to detect oscillation modes in wind farm output power, which may excite dynamic instabilities in the wider system. The wavelet transform is used as a filter to identify oscillations in different frequency bands, while SVDD is used to extract dominant features from different scales and generate an assessment boundary according to the extracted features. Poorly damped oscillations of a large magnitude or that are resonant can be alarmed to the system operator, to reduce the risk of system instability. Method evaluation is exemplified used real data from a chosen wind farm.
Starting Page	1
Ending Page	5
File Size	381658
Page Count	5
File Format	PDF
ISBN	9781424449347
DOI	10.1109/SUPERGEN.2009.5348328
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-04-06
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Power system oscillation Wavelet transform Power system transients Induction generators SVDD Power system dynamics Power system stability Wind energy generation Power system measurements Power measurement Wind farms Monitoring Power generation
Content Type	Text
Resource Type	Article

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