Analysis of high-frequency interference characteristics of UHVDC converters
| Autor: | Chaonan Ying, Zheng Xu, Chenxi Luo |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
HVDC power convertors
valves HVDC power transmission substations reactors (electric) Fourier transforms UHVDC converters converter station converter valve high-frequency noise level high-frequency interference characteristics UHVDC PLC filter PSCAD simulation platform Zhundong–Wannan UHVDC transmission project smoothing reactor Fourier transform voltage 1100.0 kV Engineering (General). Civil engineering (General) TA1-2040 |
| Zdroj: | The Journal of Engineering (2018) |
| Druh dokumentu: | article |
| ISSN: | 2051-3305 |
| DOI: | 10.1049/joe.2018.8830 |
| Popis: | The converter is the main component of the converter station and the main noise source of the PLC interference. The accurate modelling of the high-frequency characteristics of the converter is the foundation for the design of the ± 1100 kV UHVDC PLC filter. Based on deep analysis of the high-frequency characteristics of the converter valve, this paper first proposes three high-frequency models of the converter valve. Compared with a real converter valve used in similar HVDC project, model two is chosen to analyse the high-frequency characteristics. Second, the model of Zhundong–Wannan UHVDC transmission project is established in the PSCAD simulation platform to determine the actual high-frequency characteristics of the converter valve. The voltage before the smoothing reactor is calculated, and the high-frequency noise level is obtained by Fourier transform. Considering the practical application of the high-frequency model of the converter valve, this paper finally proposes a formula to express the measured noise level. The noise source expressed by the formula is more practical for research on high-frequency characteristics of the converter station. |
| Databáze: | Directory of Open Access Journals |
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