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02848nam a2200397Ia 4500 |
| 001 |
10.3390-en15134802 |
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220718s2022 CNT 000 0 und d |
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|a 19961073 (ISSN)
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| 245 |
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|a S-Transform Based Traveling Wave Directional Pilot Protection for Hybrid LCC-MMC-HVDC Transmission Line
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| 260 |
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|b MDPI
|c 2022
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| 856 |
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|z View Fulltext in Publisher
|u https://doi.org/10.3390/en15134802
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|a In this paper, the traveling wave protection issue of a hybrid high-voltage direct-current transmission line based on the line-commutated converter and modular multilevel converter is investigated. Generally, traveling wave protection based on voltage variation criterion, voltage variation rate criterion and current variation rate criterion is applied on hybrid high-voltage direct-current transmission lines as primary protection. There are two issues that should be addressed: (i) it has no fault direction identification capability which may cause wrong operation regarding external faults; and (ii) it does not consider the difference between line-commutated converter based rectifier station topology and modular multilevel converter based inverter station topology. Therefore, a novel traveling wave directional pilot protection principle for the hybrid high-voltage direct-current transmission line is proposed based on the S-transform. Firstly, the data processing capability of S-transform is described. Secondly, the typical traveling wave propagation process on a hybrid high-voltage direct-current transmission line is studied. Thirdly, a novel traveling wave fault direction identification principle is proposed. Eventually, based on PSCAD/EMTDC, a typical ±400 kV hybrid high-voltage direct-current transmission system is used for a case study to verify its robustness against fault location, fault resistance and fault type. © 2022 by the authors. Licensee MDPI, Basel, Switzerland.
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|a Data handling
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|a Direct current transmissions
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|a directional pilot protection
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|a Directional pilot protections
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|a Electric lines
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|a High-Voltage Direct Current
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|a HVDC power transmission
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|a line-commutated converter and modular multilevel converter high-voltage direct-current
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|a Line-commutated converter and modular multilevel converter high-voltage direct-current
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|a Modulars
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|a Multilevel converter
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|a Power converters
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|a S-transform
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|a S-transforms
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|a Surge protection
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|a Topology
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|a Transmission-line
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|a traveling wave
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|a Traveling wave protection
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|a Travelling waves
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|a Wave propagation
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|a Wang, D.
|e author
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|a Zhang, W.
|e author
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| 773 |
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|t Energies
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