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| Content Provider | IET Digital Library |
|---|---|
| Author | Li, Meng Jia, Ke Bi, Tianshu Yang, Qixun |
| Abstract | Accurate fault location methods are of major significance to the line maintenance of voltage source converter (VSC)-DC distribution systems. However, power electronics change the fault-characteristics, and the new fault theory is not fully mature. In addition, rapid fault isolation leaves little information for fault location. Fault location for VSC-DC distribution systems is still a big challenge. The proposed fault location method is developed based on an equivalent feeding-stage circuit derived herein. The line quantities sixth-harmonics are used, and an improved discrete Fourier transform algorithm (IDFT) is proposed to remove the influence of both decaying periodic and DC components. Simulation results on PSCAD/EMTDC verified the feasibility of the proposed fault location and IDFT algorithms. Using local measurements with the sampling frequency of 9.6 kHz, the method can locate fault position within 10 ms and with less than 2% error. |
| Starting Page | 3485 |
| Ending Page | 3490 |
| Page Count | 6 |
| ISSN | 17518687 |
| Volume Number | 11 |
| e-ISSN | 17518695 |
| Issue Number | Issue 14, Sep (2017) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-gtd/11/14 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2016.1865 |
| Journal | IET Generation, Transmission & Distribution |
| Publisher Date | 2017-06-22 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | DC Component Decaying Periodic Discrete Fourier Transform Distribution Network EMTDC Equivalent Circuit Equivalent Feeding-stage Circuit Fault Isolation Fault Location Frequency 9.6 KHz IDFT Improved Discrete Fourier Transform Algorithm Integral Transforms Local Measurement Maintenance Engineering Power Converter Power Distribution Fault Power Distribution Protection Power Electronics Power Supplies to Apparatus Power System Protection PSCAD Sampling Frequency Sixth Harmonic-based Fault Location Voltage Source Converter-DC Distribution System Line Maintenance Voltage-source Converter VSC-DC Distribution System |
| Content Type | Text |
| Resource Type | Article |
| Subject | Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering |
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