A pilot protection based on low frequency component model for HVDC transmission lines
Abstract Reliable and fast identification of high‐voltage direct current (HVDC) transmission line faults is important to the safety of power system. In traditional DC transmission line protection, differential protection is invulnerable to high fault resistance, but it needs long time delay for the...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2024-04-01
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| Series: | IET Generation, Transmission & Distribution |
| Subjects: | |
| Online Access: | https://doi.org/10.1049/gtd2.13138 |
| _version_ | 1797226587912929280 |
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| author | Ke Han Yu Chen Ruizhi Ma |
| author_facet | Ke Han Yu Chen Ruizhi Ma |
| author_sort | Ke Han |
| collection | DOAJ |
| description | Abstract Reliable and fast identification of high‐voltage direct current (HVDC) transmission line faults is important to the safety of power system. In traditional DC transmission line protection, differential protection is invulnerable to high fault resistance, but it needs long time delay for the influence of distributed capacitance current. In order to solve this problem, a novel pilot protection is proposed. The characteristics of the voltage and current processed by low‐pass filter under different fault conditions are analysed, and based on it the protection criteria is proposed. When external fault occurs, it reflects the line capacitance where the first forward fault traveling wave passes, which is increasing until equal to the whole line capacitance, then remains constant. However, when internal fault occurs, its value is negative in the initial stage, and after that its value is very different from the whole line capacitance. The analysis proves that this pilot protection method has fast operation speed, and can be applied for a relatively long period of time. What is more, the applicable time of superposition principle is considered in the analysis, which is not considered in many literatures. An UHVDC system is modelled for simulation in PSCAD/EMTDC, and the correctness and effectiveness of the proposed scheme is verified. |
| first_indexed | 2024-04-24T14:27:17Z |
| format | Article |
| id | doaj.art-cf0c0c77a5794059aea00590d71238f5 |
| institution | Directory Open Access Journal |
| issn | 1751-8687 1751-8695 |
| language | English |
| last_indexed | 2024-04-24T14:27:17Z |
| publishDate | 2024-04-01 |
| publisher | Wiley |
| record_format | Article |
| series | IET Generation, Transmission & Distribution |
| spelling | doaj.art-cf0c0c77a5794059aea00590d71238f52024-04-03T04:40:57ZengWileyIET Generation, Transmission & Distribution1751-86871751-86952024-04-011871466147710.1049/gtd2.13138A pilot protection based on low frequency component model for HVDC transmission linesKe Han0Yu Chen1Ruizhi Ma2State Key Laboratory of Advanced Electromagnetic Technology Huazhong University of Science and Technology Wuhan People's Republic of ChinaState Key Laboratory of Advanced Electromagnetic Technology Huazhong University of Science and Technology Wuhan People's Republic of ChinaState Key Laboratory of Advanced Electromagnetic Technology Huazhong University of Science and Technology Wuhan People's Republic of ChinaAbstract Reliable and fast identification of high‐voltage direct current (HVDC) transmission line faults is important to the safety of power system. In traditional DC transmission line protection, differential protection is invulnerable to high fault resistance, but it needs long time delay for the influence of distributed capacitance current. In order to solve this problem, a novel pilot protection is proposed. The characteristics of the voltage and current processed by low‐pass filter under different fault conditions are analysed, and based on it the protection criteria is proposed. When external fault occurs, it reflects the line capacitance where the first forward fault traveling wave passes, which is increasing until equal to the whole line capacitance, then remains constant. However, when internal fault occurs, its value is negative in the initial stage, and after that its value is very different from the whole line capacitance. The analysis proves that this pilot protection method has fast operation speed, and can be applied for a relatively long period of time. What is more, the applicable time of superposition principle is considered in the analysis, which is not considered in many literatures. An UHVDC system is modelled for simulation in PSCAD/EMTDC, and the correctness and effectiveness of the proposed scheme is verified.https://doi.org/10.1049/gtd2.13138HVDC transmission linelow frequency componentpilot protection |
| spellingShingle | Ke Han Yu Chen Ruizhi Ma A pilot protection based on low frequency component model for HVDC transmission lines IET Generation, Transmission & Distribution HVDC transmission line low frequency component pilot protection |
| title | A pilot protection based on low frequency component model for HVDC transmission lines |
| title_full | A pilot protection based on low frequency component model for HVDC transmission lines |
| title_fullStr | A pilot protection based on low frequency component model for HVDC transmission lines |
| title_full_unstemmed | A pilot protection based on low frequency component model for HVDC transmission lines |
| title_short | A pilot protection based on low frequency component model for HVDC transmission lines |
| title_sort | pilot protection based on low frequency component model for hvdc transmission lines |
| topic | HVDC transmission line low frequency component pilot protection |
| url | https://doi.org/10.1049/gtd2.13138 |
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