Abstract
Renewable energy sources (RES) and HVDC links are typically interfaced with the grid by power converters, whose performance during grid faults is significantly different from that of traditional synchronous generators. This paper investigates the performance of grid-connected voltage source converters (VSCs) under unbalanced faults. Conventional positive-sequence synchronous reference frame (SRF) control is presented first, followed by three different negative-sequence current control strategies considering reactive power injection and converter current limit. The simulation results indicate that the performance of VSCs varies with their control strategies.
Negative-sequence current control is necessary to restrict converter current in each phase under unbalanced faults. Among presented control strategies, the balanced current control strategy complies with the present voltage support requirement best and further requirements should be specified if a set of controlled unbalanced current is expected under unbalanced faults.
Negative-sequence current control is necessary to restrict converter current in each phase under unbalanced faults. Among presented control strategies, the balanced current control strategy complies with the present voltage support requirement best and further requirements should be specified if a set of controlled unbalanced current is expected under unbalanced faults.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of 2016 IEEE PES Asia-Pacific Power and Energy Conference |
| Publisher | IEEE |
| Publication date | 2016 |
| Pages | 609-613 |
| ISBN (Print) | 978-1-5090-5417-6 |
| DOIs | |
| Publication status | Published - 2016 |
| Event | 2016 IEEE PES Asia-Pacific Power and Energy Engineering Conference - Xi'an, China Duration: 25 Oct 2016 → 28 Oct 2016 https://ieeexplore.ieee.org/xpl/conhome/7764660/proceeding |
Conference
| Conference | 2016 IEEE PES Asia-Pacific Power and Energy Engineering Conference |
|---|---|
| Country/Territory | China |
| City | Xi'an |
| Period | 25/10/2016 → 28/10/2016 |
| Internet address |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 7 Affordable and Clean Energy
Keywords
- Converter control
- Fault ride through
- Reactive power
- Short circuit current
- Unbalanced faults
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