Abstract
Due to different fault ride through controls of both the wind farm and the voltage-source converter high-voltage alternating current (VSC-HVDC) converters, the offshore wind farms that are connected to the power system through VSC-HVDCs have unique fault transients. During a fault on AC side transmission lines, the wind farm and the VSC-HVDC together provide faulted current, whose amplitude and phase will be decided by their different control strategies collectively. The fault transients are different from those in the traditional AC grid. Thus, the performance of traditional protection will be affected. In this study, the AC fault current expression is deduced, while the influencing factors on the current's amplitude and phase are analysed in detail. Based on these characteristics, the performance of distance relays under the grid side fault of the VSC-HVDC-connected offshore wind farm integration system is evaluated. Simulations based on PSCAD have verified the theoretical analysis.
| Original language | English |
|---|---|
| Journal | IET Renewable Power Generation |
| Volume | 12 |
| Issue number | 13 |
| Pages (from-to) | 1547-1554 |
| Number of pages | 8 |
| ISSN | 1752-1416 |
| DOIs | |
| Publication status | Published - 1 Oct 2018 |
| Externally published | Yes |
Bibliographical note
Funding Information:This work is supported by the State's Key Project of Research and Development Plan under the grant no. 2016YFB0900503; the National Natural Science Foundation of China ?51725702, 51627811), the Fundamental Research Funds for the Central Universities under grant no. 2016ZZD01 and identify applicable sponsor under the grant no. SGRIDL-71-15-011.
Funding Information:
This work is supported by the State's Key Project of Research and Development Plan under the grant no. 2016YFB0900503; the National Natural Science Foundation of China (51725702, 51627811), the Fundamental Research Funds for the Central Universities under grant no. 2016ZZD01 and identify applicable sponsor under the grant no. SGRIDL-71-15-011.
Publisher Copyright:
© 2018 Institution of Engineering and Technology.