A Pilot Directional Protection for HVDC Transmission Line Based on Relative Entropy of Wavelet Energy
On the basis of analyzing high-voltage direct current (HVDC) transmission system and its fault superimposed circuit, the direction of the fault components of the voltage and the current measured at one end of transmission line is certified to be different for internal faults and external faults. As...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2015-07-01
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| Series: | Entropy |
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| Online Access: | http://www.mdpi.com/1099-4300/17/8/5257 |
| _version_ | 1811278865955291136 |
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| author | Sheng Lin Shan Gao Zhengyou He Yujia Deng |
| author_facet | Sheng Lin Shan Gao Zhengyou He Yujia Deng |
| author_sort | Sheng Lin |
| collection | DOAJ |
| description | On the basis of analyzing high-voltage direct current (HVDC) transmission system and its fault superimposed circuit, the direction of the fault components of the voltage and the current measured at one end of transmission line is certified to be different for internal faults and external faults. As an estimate of the differences between two signals, relative entropy is an effective parameter for recognizing transient signals in HVDC transmission lines. In this paper, the relative entropy of wavelet energy is applied to distinguish internal fault from external fault. For internal faults, the directions of fault components of voltage and current are opposite at the two ends of the transmission line, indicating a huge difference of wavelet energy relative entropy; for external faults, the directions are identical, indicating a small difference. The simulation results based on PSCAD/EMTDC show that the proposed pilot protection system acts accurately for faults under different conditions, and its performance is not affected by fault type, fault location, fault resistance and noise. |
| first_indexed | 2024-04-13T00:43:13Z |
| format | Article |
| id | doaj.art-5c372a3245c04cd09d335ee4d60c6965 |
| institution | Directory Open Access Journal |
| issn | 1099-4300 |
| language | English |
| last_indexed | 2024-04-13T00:43:13Z |
| publishDate | 2015-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Entropy |
| spelling | doaj.art-5c372a3245c04cd09d335ee4d60c69652022-12-22T03:10:05ZengMDPI AGEntropy1099-43002015-07-011785257527310.3390/e17085257e17085257A Pilot Directional Protection for HVDC Transmission Line Based on Relative Entropy of Wavelet EnergySheng Lin0Shan Gao1Zhengyou He2Yujia Deng3School of Electrical Engineering, Southwest Jiaotong University, Chengdu 610031, ChinaSchool of Electrical Engineering, Southwest Jiaotong University, Chengdu 610031, ChinaSchool of Electrical Engineering, Southwest Jiaotong University, Chengdu 610031, ChinaSchool of Electrical Engineering, Southwest Jiaotong University, Chengdu 610031, ChinaOn the basis of analyzing high-voltage direct current (HVDC) transmission system and its fault superimposed circuit, the direction of the fault components of the voltage and the current measured at one end of transmission line is certified to be different for internal faults and external faults. As an estimate of the differences between two signals, relative entropy is an effective parameter for recognizing transient signals in HVDC transmission lines. In this paper, the relative entropy of wavelet energy is applied to distinguish internal fault from external fault. For internal faults, the directions of fault components of voltage and current are opposite at the two ends of the transmission line, indicating a huge difference of wavelet energy relative entropy; for external faults, the directions are identical, indicating a small difference. The simulation results based on PSCAD/EMTDC show that the proposed pilot protection system acts accurately for faults under different conditions, and its performance is not affected by fault type, fault location, fault resistance and noise.http://www.mdpi.com/1099-4300/17/8/5257wavelet transformrelative entropy of wavelet energyHVDC transmission systemdirection featurefault components of voltage and currentpilot protection |
| spellingShingle | Sheng Lin Shan Gao Zhengyou He Yujia Deng A Pilot Directional Protection for HVDC Transmission Line Based on Relative Entropy of Wavelet Energy Entropy wavelet transform relative entropy of wavelet energy HVDC transmission system direction feature fault components of voltage and current pilot protection |
| title | A Pilot Directional Protection for HVDC Transmission Line Based on Relative Entropy of Wavelet Energy |
| title_full | A Pilot Directional Protection for HVDC Transmission Line Based on Relative Entropy of Wavelet Energy |
| title_fullStr | A Pilot Directional Protection for HVDC Transmission Line Based on Relative Entropy of Wavelet Energy |
| title_full_unstemmed | A Pilot Directional Protection for HVDC Transmission Line Based on Relative Entropy of Wavelet Energy |
| title_short | A Pilot Directional Protection for HVDC Transmission Line Based on Relative Entropy of Wavelet Energy |
| title_sort | pilot directional protection for hvdc transmission line based on relative entropy of wavelet energy |
| topic | wavelet transform relative entropy of wavelet energy HVDC transmission system direction feature fault components of voltage and current pilot protection |
| url | http://www.mdpi.com/1099-4300/17/8/5257 |
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