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| Content Provider | IET Digital Library |
|---|---|
| Author | Su, Guoyun Xu, Long Du, Wenjuan Chen, Chen Ji, Yining Wang, Haifeng |
| Abstract | Power system voltage stability can be significantly affected by load dynamic characteristics. This study examines the impacts of dynamic interaction between doubly fed induction generator (DFIG)-based wind farms and induction motor (IM) loads on system dynamic voltage stability. It is revealed that the IM load model exhibits a recovery response which is accompanied by an IM oscillation mode (IMOM). The IMOM is first demonstrated to be closely related to system voltage stability. Moreover, a closed-loop interconnected model is established, which consists of the following two open-loop subsystems: DFIG; the rest of power system with IM loads. Generally, due to the fast response of the voltage-source converter control loop, the dynamic interaction between the two open-loop subsystems is weak. However, it is discovered that under a special condition named as open-loop modal coupling, the aforementioned dynamic interaction will become tremendous. As a consequence, the damping of IMOM may be degraded substantially which can cause system voltage instability. Therefore, the mechanism of dynamic voltage instability issues is investigated from the perspective of modal coupling. A modified Western Systems Coordinating Council (WSCC) 9-bus system integrated with a DFIG-based wind farm is adopted to demonstrate and validate the above conclusions. |
| Starting Page | 2514 |
| Ending Page | 2519 |
| Page Count | 6 |
| Volume Number | 2019 |
| e-ISSN | 20513305 |
| Issue Number | Issue 16, Mar (2019) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/joe/conferences/cn-adc-2018 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/joe.2018.8579 |
| Journal | The Journal of Engineering |
| Publisher | The Institution of Engineering and Technology |
| Publisher Date | 2018-10-26 |
| Access Restriction | Open |
| Rights License | Creative Commons Attribution-Non Commercial-No Derivs License (http://creativecommons.org/licenses/by-nc-nd/3.0/) |
| Subject Keyword | Aforementioned Dynamic Interaction Asynchronous Generator Asynchronous Machine Closed Loop System Closed-loop Interconnected Model Control of Electric Power System Damping DFIG-based Wind Farm Doubly Fed Induction Generator-based Wind Farms Dynamic Voltage Instability Issues IM Load IM Load Model IM Oscillation Mode IMOM Induction Motor Load Induction Motors Load Dynamic Characteristic Modified WSCC 9-bus System Open-loop Modal Coupling Open-loop SubSystem Oscillation Power System Control Power System Dynamic Voltage Stability Power System Stability Power System Voltage Stability Recovery Response Stability in Control Theory System Voltage Instability Voltage-source Converter Control Loop Wind Power Plant |
| Content Type | Text |
| Resource Type | Article |
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