NDLI: Impact of fault clearing time on shaft torque amplification in series compensated system

Content Provider	IEEE Xplore Digital Library
Author	Yuhang Luo Tianshu Bi Tao Zhang Qixun Yang
Copyright Year	2008
Description	Author affiliation: Key Lab. of Power Syst. Protection & Dynamic Security Monitoring & Control (MOE), North China Electr. Power Univ., Beijing (Yuhang Luo; Tianshu Bi)
Abstract	Series capacitor compensation in AC transmission systems may cause subsynchronous resonance (SSR) that can lead to turbine-generator shaft fatigue. One of the SSR phenomenons is referred to as shaft torque amplification, which might cause serious damage to the shaft. A methodology considering shaft torque as the torsional system response of applied force is given in this paper. The maximum shaft torque is finally deduced as an analytic function of fault clearing time using a simplified two-DOF model. The conclusion could be obtained that fault clearing at odd numbers of half cycles of the dominant torsional mode will generally provide maximum torques. Simulation results demonstrate the validity of the conclusion, which helps in choosing a proper fault clearing time that could avoid shaft damage and decrease reduction of shaft life efficiently.
Starting Page	709
Ending Page	713
File Size	637467
Page Count	5
File Format	PDF
ISBN	9787900714138
DOI	10.1109/DRPT.2008.4523498
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-04-06
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	DRPT
Subject Keyword	Shafts Torque Capacitors Frequency Resonance Fatigue Control systems PSCAD IEEE members Power system economics two-DOF system fault clearing time shaft impact torque shaft torque amplification subsynchronous resonance
Content Type	Text
Resource Type	Article

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