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| Content Provider | IET Digital Library |
|---|---|
| Author | Zhang, Shuo Zou, Guibin Huang, Qiang Xu, Bin Li, Jun |
| Abstract | This study proposes a novel non-unit line protection for modular multilevel converter-based (MMC) multi-terminal high-voltage direct current (MTDC) grids. On the basis of the symmetrical component analysis, the initial values of positive-sequence voltage travelling waves (PSVTWs) generated by the fault are first investigated. Then, according to the TW theory and the inherent composition of the primary equipment of MMC-MTDC grids, the initial values of PSVTWs on both sides of the series inductor are obtained in Laplace domain. Moreover, a fast fault line protection based on the positive-sequence voltage on the series inductor at the line terminal is proposed. Besides, the method of the protection threshold determination is elaborated and is independent of simulation. Finally, extensive simulation studies are carried out in a four-terminal MMC-MTDC grid. Simulation results show the effectiveness of the proposed line protection method. |
| Starting Page | 4331 |
| Ending Page | 4338 |
| Page Count | 8 |
| ISSN | 17518687 |
| Volume Number | 13 |
| e-ISSN | 17518695 |
| Issue Number | Issue 19, Oct (2019) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-gtd/13/19 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2018.6903 |
| Journal | IET Generation, Transmission & Distribution |
| Publisher Date | 2019-08-01 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Fast Fault Line Protection Fault Diagnosis Four-terminal MMC-MTDC Grid High-voltage Direct Current Grid HVDC Power Converter Initial Value Laplace Domain Line Terminal Modular Multilevel Converter-based Multiterminal Novel Nonunit Line Protection Positive-sequence Voltage Power Grid Power Inductors Power System Protection Power Transmission Cables Power Transmission Fault Power Transmission Line Power Transmission Protection Protection Threshold Determination PSVTW Series Inductor Single-ended Line Protection Symmetrical Component Analysis Transformer And Reactors Voltage-source Converter |
| Content Type | Text |
| Resource Type | Article |
| Subject | Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering |
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