Non‐unit protection method for long transmission lines in MTDC grids
Abstract This paper presents a non‐unit protection method for long transmission lines of multi‐terminal HVDC (MTDC) grids based on the magnitude and direction of modal voltage and current travelling waves. The method overcomes the difficulty resulting from high attenuation and distortion as reported...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Wiley
2021-06-01
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| Series: | IET Generation, Transmission & Distribution |
| Subjects: | |
| Online Access: | https://doi.org/10.1049/gtd2.12125 |
| _version_ | 1797901509778735104 |
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| author | Seyed Sattar Mirhosseini Sadegh Jamali Marjan Popov |
| author_facet | Seyed Sattar Mirhosseini Sadegh Jamali Marjan Popov |
| author_sort | Seyed Sattar Mirhosseini |
| collection | DOAJ |
| description | Abstract This paper presents a non‐unit protection method for long transmission lines of multi‐terminal HVDC (MTDC) grids based on the magnitude and direction of modal voltage and current travelling waves. The method overcomes the difficulty resulting from high attenuation and distortion as reported in previous methods using fault‐generated transients for protection of long HVDC lines. The proposed method determines the faulted pole using multi‐resolution morphological gradient of the pole voltage. Then, the multiplication of multi‐resolution morphological gradient of the modal travelling waves is utilised as a criterion to discriminate between internal and external faults and non‐fault events. The criterion is a negative high value for internal faults, a negative low value for forward external faults and events, and a positive value for backward external faults and events. A four‐terminal HVDC grid with modular multilevel converters including long HVDC lines is modelled using the PSCAD/EMTDC software. The simulation study validates effectiveness of the method for detection and discrimination of high resistance faults on long lines, as well as stability against external DC and AC faults, and DC circuit breaker opening and reclosing transients. The proposed method uses a relatively low sampling frequency and local data, i.e. no requirement for a communication link. |
| first_indexed | 2024-04-10T09:03:08Z |
| format | Article |
| id | doaj.art-4a9d75d8df0d469bb2aa147a8462aaad |
| institution | Directory Open Access Journal |
| issn | 1751-8687 1751-8695 |
| language | English |
| last_indexed | 2024-04-10T09:03:08Z |
| publishDate | 2021-06-01 |
| publisher | Wiley |
| record_format | Article |
| series | IET Generation, Transmission & Distribution |
| spelling | doaj.art-4a9d75d8df0d469bb2aa147a8462aaad2023-02-21T08:57:07ZengWileyIET Generation, Transmission & Distribution1751-86871751-86952021-06-0115111674168710.1049/gtd2.12125Non‐unit protection method for long transmission lines in MTDC gridsSeyed Sattar Mirhosseini0Sadegh Jamali1Marjan Popov2Centre of Excellence for Power System Automation and Operation, School of Electrical Engineering Iran University of Science and Technology Tehran IranCentre of Excellence for Power System Automation and Operation, School of Electrical Engineering Iran University of Science and Technology Tehran IranFaculty of Electrical Engineering, Mathematics and Computer Science Delft University of Technology Delft 2628 CD The NetherlandsAbstract This paper presents a non‐unit protection method for long transmission lines of multi‐terminal HVDC (MTDC) grids based on the magnitude and direction of modal voltage and current travelling waves. The method overcomes the difficulty resulting from high attenuation and distortion as reported in previous methods using fault‐generated transients for protection of long HVDC lines. The proposed method determines the faulted pole using multi‐resolution morphological gradient of the pole voltage. Then, the multiplication of multi‐resolution morphological gradient of the modal travelling waves is utilised as a criterion to discriminate between internal and external faults and non‐fault events. The criterion is a negative high value for internal faults, a negative low value for forward external faults and events, and a positive value for backward external faults and events. A four‐terminal HVDC grid with modular multilevel converters including long HVDC lines is modelled using the PSCAD/EMTDC software. The simulation study validates effectiveness of the method for detection and discrimination of high resistance faults on long lines, as well as stability against external DC and AC faults, and DC circuit breaker opening and reclosing transients. The proposed method uses a relatively low sampling frequency and local data, i.e. no requirement for a communication link.https://doi.org/10.1049/gtd2.12125Mathematical analysisControl of electric power systemsd.c. transmissionPower system protectionPower engineering computingPower convertors and power supplies to apparatus |
| spellingShingle | Seyed Sattar Mirhosseini Sadegh Jamali Marjan Popov Non‐unit protection method for long transmission lines in MTDC grids IET Generation, Transmission & Distribution Mathematical analysis Control of electric power systems d.c. transmission Power system protection Power engineering computing Power convertors and power supplies to apparatus |
| title | Non‐unit protection method for long transmission lines in MTDC grids |
| title_full | Non‐unit protection method for long transmission lines in MTDC grids |
| title_fullStr | Non‐unit protection method for long transmission lines in MTDC grids |
| title_full_unstemmed | Non‐unit protection method for long transmission lines in MTDC grids |
| title_short | Non‐unit protection method for long transmission lines in MTDC grids |
| title_sort | non unit protection method for long transmission lines in mtdc grids |
| topic | Mathematical analysis Control of electric power systems d.c. transmission Power system protection Power engineering computing Power convertors and power supplies to apparatus |
| url | https://doi.org/10.1049/gtd2.12125 |
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