Analysis and experimental verification of current limiting methods for grid converters under unbalanced load conditions
| Autor: | Sibylle Dieckerhoff, Benjamin Freudenberg, Hendrik Just |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Computer science
020209 energy 020208 electrical & electronic engineering 02 engineering and technology Converters Fault (power engineering) Grid Power (physics) Current limiting Transmission (telecommunications) Control theory 0202 electrical engineering electronic engineering information engineering Robust control Voltage |
| Zdroj: | 2016 18th European Conference on Power Electronics and Applications (EPE'16 ECCE Europe). |
| DOI: | 10.1109/epe.2016.7695600 |
| Popis: | The impact of converter based generation systems on transmission and distribution grids is steadily increasing. Therefore, new control efforts regarding fault ride-through, fault current injection and voltage support are necessary. These grid services lead to high stress on the converter which has to be protected thoroughly in any operation mode. Especially conditions, where the grid voltages become unbalanced are critical for converter control. The tradeoff between grid requirements and converter protection requires robust control and limiting algorithms. In this paper, an advanced current limiting method is presented which minimizes the impact of the converter limits on the overall system support objective. The proposed strategy is verified in simulation and experiment. Fault ride-through requirements are considered and different power reference strategies like Average Active Power-(AARC), Balanced Positive Sequence-(BPSC) or Positive and Negative Sequence Control (PNSC) in combination with the limiting algorithm are investigated. A generalizable limiting concept for different applications like converter based generation units, FACTS or STATCOMs is achieved. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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