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| Content Provider | IET Digital Library |
|---|---|
| Author | Jia, Ke Li, Meng Bi, Tianshu Liu, Bohan Li, Wei Yang, Qixun |
| Abstract | An R–L model-based line protection algorithm is proposed for the voltage source converter (VSC)-DC distribution systems. Overviews of DC distribution topology and the fault characteristics are investigated. The feasibility of the R–L model for DC distribution networks is analysed. To decrease errors and increase numerical stability, a new variable acquisition method and a new fault distance estimation equation are proposed with the characteristics of VSC-DC distribution systems. Simulation results on power systems Computer Aided Design/Electromagnetic Transients including DC (PSCAD/EMTDC) verify the feasibility and accuracy of the proposed protection. It is shown that the protection can efficiently distinguish the internal faults with an operation time < 20 ms and error within 1%. For nearby faults, the protection can trip within 8 ms. The proposed protection can meet both the speed and the selectivity requirements with a low sampling frequency and therefore can be a potential option for the industry application. |
| Starting Page | 1843 |
| Ending Page | 1846 |
| Page Count | 4 |
| Volume Number | 2017 |
| e-ISSN | 20513305 |
| Issue Number | Issue 13, Jan (2017) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/joe/2017/13 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/joe.2017.0650 |
| Journal | The Journal of Engineering |
| Publisher | The Institution of Engineering and Technology |
| Publisher Date | 2017-01-01 |
| Access Restriction | Open |
| Rights License | Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/) |
| Subject Keyword | DC Distribution Topology Distribution Network Fault Characteristic Fault Distance Estimation Equation Internal Fault Modified R-L Model-based Protection Numerical Stability Power Converter Power Distribution Fault Power Distribution Line Power Distribution Protection Power Distribution Reliability Power Supplies to Apparatus Power System Protection PSCAD-EMTDC R-L Model-based Line Protection Algorithm Reliability Sampling Frequency Selectivity Requirements Variable Acquisition Method Voltage Source Converter-DC Distribution System Voltage-source Converter VSC-DC Distribution Line |
| Content Type | Text |
| Resource Type | Article |
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