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| Content Provider | IET Digital Library |
|---|---|
| Author | Huai, Qing Liu, Kaipei Hooshyar, Ali Ding, Hua Qin, Liang Chen, Kun |
| Abstract | This study presents a travelling wave (TW)-based method for locating DC line faults in a modular multilevel converter (MMC)-based high-voltage direct current (HVDC) system by using local information. Pole voltage signals are adopted and denoised via stationary wavelet transform (SWT) with improved threshold functions. Hankel matrix-based singular value decomposition (SVD) is utilised to detect TW arrivals. The arrival times of incidental and reflected wave heads are observed in SVD result. The reflected wave heads from the fault point and the opposite end can be discriminated by comparing surge polarities in SVD result. The proposed method relies on the TW principle but is independent of TW propagation velocity. The feasibility of the proposed algorithm is evaluated considering potential factors, such as fault resistance, close-in fault, remote fault, sampling rate and noise. The superiority of this method is validated by comparing it with other signal-processing techniques and TW-based fault location principles. Electromagnetic transient simulation of the multi-terminal HVDC system on Power Systems Computer Aided Design / Electromagnetic Transients including DC (PSCAD/EMTDC) is conducted to provide fault TW signals, which are analysed in MATLAB. A corresponding equivalent test model developed in a real-time digital simulator is also provided for conducting a supplementary study to verify and further research this fault location method. |
| Starting Page | 4043 |
| Ending Page | 4052 |
| Page Count | 10 |
| ISSN | 17521416 |
| Volume Number | 14 |
| e-ISSN | 17521424 |
| Issue Number | Issue 19, Dec (2020) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-rpg.2020.0702 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-rpg/14/19 |
| Journal | IET Renewable Power Generation |
| Publisher Date | 2020-12-18 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Algebra Arrival Times D.C. Transmission Direct Current System Fault Location Fault Point Fault Resistance Fault TW Signal Hankel Matrix-based Singular Value Decomposition HVDC Power Converter HVDC Power Transmission Improved Threshold Function Integral Transforms Line Fault Location Local Information Locating DC Line Fault Modular Multilevel Converter-based High-voltage Multiterminal HVDC System Multiterminal MMC-HVDC System Pole Voltage Signal Power Engineering Computing Power System Protection Power Transmission Fault Power Transmission Protection Remote Fault Signal Processing And Detection Signal-processing Technique Singular Value Decomposition Stationary Wavelet SVD Result SWT Travelling Wave-based Method TW Arrivals TW Principle TW Propagation Velocity TW-based Fault Location Principles Wave Heads Wavelet Transform |
| Content Type | Text |
| Resource Type | Article |
| Subject | Renewable Energy, Sustainability and the Environment |
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