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| Content Provider | IET Digital Library |
|---|---|
| Author | Ashouri, Mani Silva, Filipe F. D. Bak, Claus Leth |
| Abstract | This work studies the application of short-time Fourier transform (STFT) to extract current harmonics of various fault types to design a protection method for meshed multi-terminal voltage source converter-high-voltage direct current (VSC-HVDC-MTDC) grids. The frequency spectrum of fault current harmonics is used to detect internal and external faults, the faulty pole and fault type. The method does not need the implementation of series inductance on the sides of the DC lines and it is also effective for lines combining overhead lines and cables. The window function and hop size play the primary role in STFT, which are investigated in a sensitivity analysis. A modified version of CIGRE meshed DC grid system is simulated in PSCAD in order to show the robustness of the method, and further signal processing analysis is done in MATLAB. The results show the accurate detection and discrimination between faulty sections using the proposed harmonic-based method and how important the STFT parameters are in order to have a robust protection algorithm. |
| Starting Page | 1439 |
| Ending Page | 1443 |
| 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.2018.8765 |
| 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 | Control of Electric Power System D.C. Transmission DC Grid System DC Line External Fault Fault Current Fault Current Harmonics Fault Type Fault Types Faulty Pole Fourier Transforms Frequency Spectrum Harmonic-based Method Harmonic-based Protection Hop Size HVDC Power Converter HVDC Power Transmission Integral Transforms Integral Transforms in Numerical Analysis Internal Fault Meshed Multiterminal Voltage Source Converter-high-voltage Meshed VSC-MTDC Grid Overhead Power Line Power Grid Power Overhead Line Power System Protection Power Transmission Control Power Transmission Fault Power Transmission Protection Protection Method Robust Protection Algorithm Short-time Fourier Transform STFT Parameter VSC VSC-HVDC-MTDC Window Function |
| Content Type | Text |
| Resource Type | Article |
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