NDLI: Line-to-Line Short-Circuit-Based Finite-Element Performance and Parameter Predictions of Large Hydro Generators

Content Provider	IEEE Xplore Digital Library
Author	Wamkeue, R. Kamwa, I. Chacha, M.
Copyright Year	1981
Abstract	A two-dimensional time-stepped finite-element (FE) method is used to model and successfully replicate saturated line-to-line and three-phase short-circuit test responses recorded on a 40-pole 13.75 MVA hydro generator at Hydro-Quebec's Rapides-des-Quinze generating station. Three levels of line-to-line and sudden three-phase short-circuit tests (0.13, 0.25, and 0.48 p.u.) are simulated numerically using the FE-based model. While symmetrical faults are only used for parameter determination, the computed line-to-line waveforms are thoroughly compared to real data, with a special attention given to field current responses. According to IEEE Standard 115-1995, the d-axis dynamic reactances and time constants are computed from three-phase short-circuit tests, while the negative-sequence reactance is derived from the line-to-line short-circuit test resulting in a rated armature current. The obtained simulated test responses and parameter values, from both symmetrical and asymmetrical faults, support the effectiveness of the proposed FE-based model in incorporating the saturation phenomenon, large number of poles, and detailed damper representation to achieve an accurate dynamic performance assessment together with negative-sequence reactance and dynamic constants prediction.
Starting Page	53
Ending Page	53
Page Count	1
File Size	255143
File Format	PDF
ISSN	02721724
Volume Number	22
Issue Number	11
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-11-01
Publisher Place	U.S.A.
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Finite element methods Space vector pulse width modulation Testing Pulse width modulation inverters Computational modeling Predictive models Induction machines Iron Numerical simulation Shock absorbers performance and parameter predictions Synchronous machines transient electromagnetic analysis
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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