Abstract
The multi-frequency (harmonic) interaction among converters is an increasing challenge in converter-dominated power grids. To study steady-state harmonics and transient harmonic stability, it is crucial to develop accurate multifrequency models for converters. However, the frequency and sequence couplings have not been addressed in the state-of-the-art analytical models as well as model validation tests for converters. This paper overviews the impedance measurement test methods for converters and demonstrates the couplings in frequencydomain based on time-domain simulations using typical Type 4 and Type 3 wind turbine models. The analysis shows significant frequency and sequence couplings which are neglected in the simplified analytical models.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the 19th Wind Integration Workshop |
| Number of pages | 6 |
| Publisher | Energynautics GmbH |
| Publication date | 2020 |
| ISBN (Electronic) | 978-3-9820080-8-0 |
| Publication status | Published - 2020 |
| Event | 19th Wind Integration Workshop - Online Duration: 11 Nov 2020 → 12 Nov 2020 Conference number: 19 |
Conference
| Conference | 19th Wind Integration Workshop |
|---|---|
| Number | 19 |
| Location | Online |
| Period | 11/11/2020 → 12/11/2020 |
Keywords
- Frequency coupling
- Sequence coupling
- Pertubation test
- Wind turbine
- Multi-frequency model