A novel protection scheme for hybrid transmission systems connected to DFIG‐based wind farms using game theory
Abstract This paper presents a single‐ended traveling wave‐based fault protection and location method using game theory for a hybrid multi‐terminal transmission system: an overhead line combined with submarine cables. This technique intends to locate and protect a fault regardless of whether it is o...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2021-08-01
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| Series: | IET Renewable Power Generation |
| Subjects: | |
| Online Access: | https://doi.org/10.1049/rpg2.12173 |
| Summary: | Abstract This paper presents a single‐ended traveling wave‐based fault protection and location method using game theory for a hybrid multi‐terminal transmission system: an overhead line combined with submarine cables. This technique intends to locate and protect a fault regardless of whether it is on the overhead line or submarine cables. Initially, this study investigates the effects of reflection and refraction coefficients of the terminals on the conventional protections based on traveling wave theory. Furthermore, it presents a single‐end method to detect and locate faults on hybrid multi‐terminal transmission systems connected to doubly‐fed induction generator (DFIG) based wind farms. Following that, the extracted traveling waves and the faulty‐segments were discriminated and identified, respectively, using the game theory. Regarding the extraction techniques of the traveling wave, this study also employs two techniques, including discrete wavelet transform (DWT) and mathematical morphology filter (MMF) to process the signals and investigate the sensitivity of the proposed scheme. The results of the simulation studies that used PSCAD/EMTDC confirmed the reliability and accuracy of the proposed protection scheme in all possible types of faults on the overhead line and submarine cables. The proposed technique also signifies noise immunity. |
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| ISSN: | 1752-1416 1752-1424 |