A Fault Line Selection Method for DC Distribution Network Using Multiple Observers
This paper proposes a method of fault line selection for a DC distribution network. Firstly, the 1-mode current is calculated using the measured currents of the positive and the negative line. Then, it is time reversed and further decomposed by wavelet technology. Secondly, the lossless mirror line...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-04-01
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| Series: | Energies |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1073/12/7/1245 |
| _version_ | 1811304513468891136 |
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| author | Xipeng Zhang Nengling Tai Pan Wu Xiaodong Zheng Wentao Huang |
| author_facet | Xipeng Zhang Nengling Tai Pan Wu Xiaodong Zheng Wentao Huang |
| author_sort | Xipeng Zhang |
| collection | DOAJ |
| description | This paper proposes a method of fault line selection for a DC distribution network. Firstly, the 1-mode current is calculated using the measured currents of the positive and the negative line. Then, it is time reversed and further decomposed by wavelet technology. Secondly, the lossless mirror line network is established according to the parameters and the topology of the DC distribution network. Thirdly, it is presumed that several virtual current sources are employed at the locations where the corresponding observers are, and the values of these current sources are equal to the processed 1-mode currents. Fourthly, a fault is placed at every point of the lossless mirror line network the RMS value of every assumed fault current is calculated. During this process, the phase coefficient of every lossless mirror line is set to vary along with the length of the line obeying Gaussian distribution. Finally, the line with the peak value of the RMS values of the currents is selected as the fault line. The result of fault line selection is updated using the fewest observers that are set in advance according to the initial result. A DC distribution network is simulated in PSCAD/EMDTC to verify the correctness of the proposed method. |
| first_indexed | 2024-04-13T08:08:34Z |
| format | Article |
| id | doaj.art-e38bfa3bb0ff4664b2ac7ead6fce382a |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-13T08:08:34Z |
| publishDate | 2019-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-e38bfa3bb0ff4664b2ac7ead6fce382a2022-12-22T02:55:06ZengMDPI AGEnergies1996-10732019-04-01127124510.3390/en12071245en12071245A Fault Line Selection Method for DC Distribution Network Using Multiple ObserversXipeng Zhang0Nengling Tai1Pan Wu2Xiaodong Zheng3Wentao Huang4Department of Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaDepartment of Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaDepartment of Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaDepartment of Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaDepartment of Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaThis paper proposes a method of fault line selection for a DC distribution network. Firstly, the 1-mode current is calculated using the measured currents of the positive and the negative line. Then, it is time reversed and further decomposed by wavelet technology. Secondly, the lossless mirror line network is established according to the parameters and the topology of the DC distribution network. Thirdly, it is presumed that several virtual current sources are employed at the locations where the corresponding observers are, and the values of these current sources are equal to the processed 1-mode currents. Fourthly, a fault is placed at every point of the lossless mirror line network the RMS value of every assumed fault current is calculated. During this process, the phase coefficient of every lossless mirror line is set to vary along with the length of the line obeying Gaussian distribution. Finally, the line with the peak value of the RMS values of the currents is selected as the fault line. The result of fault line selection is updated using the fewest observers that are set in advance according to the initial result. A DC distribution network is simulated in PSCAD/EMDTC to verify the correctness of the proposed method.https://www.mdpi.com/1996-1073/12/7/1245DC distribution networklossless mirror line networkwaveletvariable phase coefficientfault line selectionfewest observers |
| spellingShingle | Xipeng Zhang Nengling Tai Pan Wu Xiaodong Zheng Wentao Huang A Fault Line Selection Method for DC Distribution Network Using Multiple Observers Energies DC distribution network lossless mirror line network wavelet variable phase coefficient fault line selection fewest observers |
| title | A Fault Line Selection Method for DC Distribution Network Using Multiple Observers |
| title_full | A Fault Line Selection Method for DC Distribution Network Using Multiple Observers |
| title_fullStr | A Fault Line Selection Method for DC Distribution Network Using Multiple Observers |
| title_full_unstemmed | A Fault Line Selection Method for DC Distribution Network Using Multiple Observers |
| title_short | A Fault Line Selection Method for DC Distribution Network Using Multiple Observers |
| title_sort | fault line selection method for dc distribution network using multiple observers |
| topic | DC distribution network lossless mirror line network wavelet variable phase coefficient fault line selection fewest observers |
| url | https://www.mdpi.com/1996-1073/12/7/1245 |
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