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| Content Provider | IET Digital Library |
|---|---|
| Author | Wang, Yanting Zhang, Baohui |
| Abstract | The hybrid high-voltage direct current (HVDC) transmission system comprising a line-commutated converter (LCC) on the rectifier side and a voltage source converter (VSC) on the inverter side combines the advantages of both LCC and VSC. It has broad prospects in many application fields. However, at the VSC-based inverter side of the hybrid system, there is no dc filters, and the inductance of the smoothing reactor is much smaller than that of the LCC station. Therefore, it is hard to distinguish line internal and external faults at the VSC side for the conventional protections based on the attenuation characteristic of the line boundary. In order to solve this problem, this study proposes a non-unit protection for hybrid HVDC transmission lines. The protection judges the fault section based on the differences of the backward travelling waveforms under internal and external fault conditions. Simulation results show that the proposed protection is able to distinguish internal faults from external ones, identify the faulty pole exactly, and has enough sensitivity under large resistance faults. |
| Starting Page | 1261 |
| Ending Page | 1265 |
| Page Count | 5 |
| Volume Number | 2019 |
| e-ISSN | 20513305 |
| Issue Number | Issue 16, Mar (2019) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/joe/conferences/cn-adc-2018 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/joe.2018.8525 |
| Journal | The Journal of Engineering |
| Publisher | The Institution of Engineering and Technology |
| Publisher Date | 2018-10-23 |
| Access Restriction | Open |
| Rights License | Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/) |
| Subject Keyword | Attenuation Characteristic Backward Travelling Wave-variation-based Protection Backward Travelling Waveforms D.C. Transmission Dc Filter External Fault External Fault Condition Fault Section High-voltage Direct Current Transmission System HVDC Power Converter HVDC Power Transmission Hybrid HVDC System Hybrid HVDC Transmission Line Internal Fault Condition Invertors LCC Station Line Boundary Line-commutated Converter Nonunit Protection Power System Protection Power Transmission Fault Power Transmission Line Power Transmission Protection Protection Judges Reactors (Electric) Rectifier Side Rectifying Circuit Smoothing Reactor Transformer And Reactors Transmission Line Voltage Source Converter VSC VSC Side VSC-based Inverter Side |
| Content Type | Text |
| Resource Type | Article |
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