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Content Provider | IET Digital Library |
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Author | Zhang, Zhenxing Liu, Shiming Zhu, Guofang Lu, Zhaonan |
Abstract | Doubly fed wind power generator operating near series compensated transmission lines are susceptible to un-damped sub-synchronous, which is called sub-synchronous control interaction (SSCI), due to the interaction between rotor side converter and series compensation capacitor. SSCI may cause serious damage to the doubly fed wind power generator. Therefore, it is very important to detect SSCI and trip in time to protect the generator. In allusion to detect SSCI, a model of doubly fed wind power generator with series compensation is built. This model shows that when SSCI happens, the current at the generator outlet is affected more than the voltage, and there is large amount of low frequency component with the same frequency of SSCI in the current. Therefore, this current can be used for SSCI detection. Firstly, filtering out the power frequency component and then, analysing the amplitude and frequency of the low frequency component by the method of combining fast Fourier transform and discrete time Fourier transform. The amplitude and frequency can be used to determine SSCI in the system. A prototype using this method has been made out and tested in real-time digital simulator, proving that this method can detect that SSCI < 100 ms. |
Starting Page | 2104 |
Ending Page | 2107 |
Page Count | 4 |
Volume Number | 2017 |
e-ISSN | 20513305 |
Issue Number | Issue 13, Jan (2017) |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/joe/2017/13 |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/joe.2017.0701 |
Journal | The Journal of Engineering |
Publisher | The Institution of Engineering and Technology |
Publisher Date | 2017-01-01 |
Access Restriction | Open |
Rights License | Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/) |
Subject Keyword | Amplitude Asynchronous Generator Control of Electric Power System Discrete Fourier Transform Doubly Fed Generator DTFT Doubly Fed Wind Power Generator Fast Fourier Transform Fourier Transforms Generator Outlet Integral Transforms Low Frequency Component Power Frequency Component Power Generation Control Power Transmission Line Rotors Series Compensated Transmission Line Series Compensation Capacitor SSCI Detection Time 100.0 Ms Wind Power Plant |
Content Type | Text |
Resource Type | Article |
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