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Effects of Frequency and Voltage Relays on Turbine-Generator Shaft Fatigue due to Islanding
ID：177 View Protection：PUBLIC Updated Time：2020-10-15 20:09:22 Hits：799 Poster Presentation

Start Time：2020-11-04 15:20（Asia/Shanghai）

Duration：5min

Session：G Poster session » G1Poster Session 1 and Poster Session 6

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Abstract
Frequency and voltage relays are used to protect networks against abnormal frequencies and voltages. They are also used to detect the islanding of distributed generators. To avoid unwanted tripping during normal operation, frequency and voltage relays use set points and time delays. However, when islanding occurs, set points and time delays effectively delay islanding termination. Simulation with PSCAD and an analytical method for the fatigue estimate of shafts were used to study the effets of set points and time delays on the fatigue life of turbine generator shafts. It was found that frequency set points, voltage set points, and time delays contribute to the loss of fatigue life incurred by turbine-generator shafts during islanding, and this constitutes a disadvantage for this method of islanding detection. Using islanding detection methods that do not rely on thresholds avoids the additional loss of shaft fatigue life caused by frequency and voltage relays.
Keywords
fatigue, generator, islanding, shaft, turbine
Speaker
Bombay Babi
Postgraduate Student University of Johannesburg

Submission Author
Bombay Babi University of Johannesburg
Pitshou Bokoro University of Johannesburg
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Important Date

  • Conference Date

    Nov 02

    2020

    to

    Nov 04

    2020

  • Oct 27 2020

    Draft paper submission deadline

  • Nov 03 2020

    Contribution Submission Deadline

  • Nov 04 2020

    Registration deadline

  • Nov 17 2020

    Final Paper Deadline

Sponsored By
IEEE IAS Student Chapter of Huazhong University of Science and Technology (HUST)
Organized By
Huazhong University of Science and Technology
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