Improved distance protection applied to faults with sub-harmonic content in transmission lines
Series compensated transmission lines bring technical and economic advantages for power systems. However, when transient events occur, the performance of distance protection is affected, which can cause undesired tripping in the protection. This study compared the Fourier transform algorithm with a...
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| Format: | article |
| Language: | Spanish |
| Published: |
2020
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| Online Access: | https://revistas.utp.ac.pa/index.php/prisma/article/view/2533 https://ridda2.utp.ac.pa/handle/123456789/11974 |
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| Summary: | Series compensated transmission lines bring technical and economic advantages for power systems. However, when transient events occur, the performance of distance protection is affected, which can cause undesired tripping in the protection. This study compared the Fourier transform algorithm with a variant of the Prony method, which allows attenuating sub-harmonic frequencies that are generated at the time of an electrical failure in series compensated transmission lines. It was observed how the estimation of the fault impedance was improved when single-phase faults were applied, allowing the distance protection to improve its selectivity at the moment of making the tripping decision. This study assessed a 400 kV system developed with the alternative transient program was, and the signal processing was assessed using the Python and Matlab programming language. |
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