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| Content Provider | IET Digital Library |
|---|---|
| Author | Sun, Li ling Hu, Lan qing Xu, Bo qiang |
| Abstract | Stator winding inter-turn short-circuit fault (SWITSC) is a kind of common and high risk fault of doubly fed induction generator (DFIG), which would cause mutation of motor power. DFIG-based wind turbine is common in weak grid and its power fluctuation triggers the drop of system frequency. However, due to the decoupling control between speed and frequency, it is difficult to provide dynamic response to the system when the frequency fluctuation. To solve the above problems, two kinds of frequency control are proposed: integrated inertial and improved pitch angle control frequency modulation (FM). The effects of the FM of the two methods dealing with the frequency drop caused by SWITSC fault are analysed and compared, and results show: integrated inertial FM reduces the rate of change of frequency and provides the dynamic support of frequency; improved pitch angle control raises the lowest frequency and reduces the amplitude of frequency fluctuation. Finally, a new composite frequency control strategy considering the integrated inertial control and improved pitch angle control is proposed, which can elevate the transient and steady-state performance of system frequency and ameliorate the problem of frequency drop in weak grid under SWITSC fault effectively. These methods are applied to models developed in Matlab/Simulink and indicative results are presented. |
| Starting Page | 2271 |
| Ending Page | 2275 |
| Page Count | 5 |
| 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.2017.0735 |
| 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-Non Commercial-No Derivs License (http://creativecommons.org/licenses/by-nc-nd/3.0/) |
| Subject Keyword | Asynchronous Generator Asynchronous Machine Composite Frequency Control Strategy Compound Frequency Modulation Strategy Control of Electric Power System Decoupling Control DFIG-based Wind Turbines Doubly Fed Induction Generator Dynamic Response Frequency Drop Frequency Fluctuation Improved Pitch Angle Control Frequency Modulation Integrated Inertial Control FM Machine Control MATLAB Simulink Environment Motor Power Pitch Control (position) Power Fluctuation Power Generation Control Power Generation Fault Power Generation Reliability Reliability Risk Fault Spatial Variables Control Stator Winding Inter-turn Short-circuit Fault Steady-state Performance SWITSC Fault System Frequency Transient State Performance Weak Grid Wind Power Plant Wind Turbine |
| Content Type | Text |
| Resource Type | Article |
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