A pilot protection scheme based on high‐frequency transient current waveform similarity for AC lines connected to HVDC inverter station
Abstract Affected by inverter station commutation failure and fast control, line fault characteristics are obviously different from traditional AC transmission line fault characteristics. The existing protection methods for AC line connected to line commutated converter based high voltage DC (LCC‐HV...
| 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/gtd2.13134 |
| _version_ | 1797226563206381568 |
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| author | Jiandong Duan Wenqiang Song Xiaotong Du Yuhang Zhao |
| author_facet | Jiandong Duan Wenqiang Song Xiaotong Du Yuhang Zhao |
| author_sort | Jiandong Duan |
| collection | DOAJ |
| description | Abstract Affected by inverter station commutation failure and fast control, line fault characteristics are obviously different from traditional AC transmission line fault characteristics. The existing protection methods for AC line connected to line commutated converter based high voltage DC (LCC‐HVDC) inverter station (ACLs) have the problems of complex setting, weak anti‐noise and high demand for data synchronization. This paper proposes a pilot protection scheme based on high‐frequency transient current waveform similarity. Firstly, with analyzing the fault traveling wave propagation process, the obvious differences are found in the transient current waveforms at both ends of the line when internal and external faults occur. Then the similarity of transient current waveforms is measured with the improved longest common similar subsequence (LCSS) method. And the weak high‐frequency current is extracted with the improved synchronous squeezed S‐transform (SST) method. Finally, a large number of power systems computer aided design (PSCAD) simulation results show that the proposed protection method does not require strict data synchronization, has strong anti‐noise performance, and is tolerant to the influence of abnormal point fluctuations. |
| first_indexed | 2024-04-24T14:26:54Z |
| format | Article |
| id | doaj.art-89c468d310c94297bbf29dfb2cde1d37 |
| institution | Directory Open Access Journal |
| issn | 1751-8687 1751-8695 |
| language | English |
| last_indexed | 2024-04-24T14:26:54Z |
| publishDate | 2024-04-01 |
| publisher | Wiley |
| record_format | Article |
| series | IET Generation, Transmission & Distribution |
| spelling | doaj.art-89c468d310c94297bbf29dfb2cde1d372024-04-03T04:40:57ZengWileyIET Generation, Transmission & Distribution1751-86871751-86952024-04-011871404142010.1049/gtd2.13134A pilot protection scheme based on high‐frequency transient current waveform similarity for AC lines connected to HVDC inverter stationJiandong Duan0Wenqiang Song1Xiaotong Du2Yuhang Zhao3School of Electrical Engineering Xi'an University of Technology Xi'an ChinaSchool of Electrical Engineering Xi'an University of Technology Xi'an ChinaSchool of Electrical Engineering Beijing Jiaotong University Beijing ChinaSchool of Electrical Engineering Xi'an University of Technology Xi'an ChinaAbstract Affected by inverter station commutation failure and fast control, line fault characteristics are obviously different from traditional AC transmission line fault characteristics. The existing protection methods for AC line connected to line commutated converter based high voltage DC (LCC‐HVDC) inverter station (ACLs) have the problems of complex setting, weak anti‐noise and high demand for data synchronization. This paper proposes a pilot protection scheme based on high‐frequency transient current waveform similarity. Firstly, with analyzing the fault traveling wave propagation process, the obvious differences are found in the transient current waveforms at both ends of the line when internal and external faults occur. Then the similarity of transient current waveforms is measured with the improved longest common similar subsequence (LCSS) method. And the weak high‐frequency current is extracted with the improved synchronous squeezed S‐transform (SST) method. Finally, a large number of power systems computer aided design (PSCAD) simulation results show that the proposed protection method does not require strict data synchronization, has strong anti‐noise performance, and is tolerant to the influence of abnormal point fluctuations.https://doi.org/10.1049/gtd2.13134AC transmission lineimproved longest common similar subsequencepilot protectionsynchronous squeezed S‐transformtransient Current |
| spellingShingle | Jiandong Duan Wenqiang Song Xiaotong Du Yuhang Zhao A pilot protection scheme based on high‐frequency transient current waveform similarity for AC lines connected to HVDC inverter station IET Generation, Transmission & Distribution AC transmission line improved longest common similar subsequence pilot protection synchronous squeezed S‐transform transient Current |
| title | A pilot protection scheme based on high‐frequency transient current waveform similarity for AC lines connected to HVDC inverter station |
| title_full | A pilot protection scheme based on high‐frequency transient current waveform similarity for AC lines connected to HVDC inverter station |
| title_fullStr | A pilot protection scheme based on high‐frequency transient current waveform similarity for AC lines connected to HVDC inverter station |
| title_full_unstemmed | A pilot protection scheme based on high‐frequency transient current waveform similarity for AC lines connected to HVDC inverter station |
| title_short | A pilot protection scheme based on high‐frequency transient current waveform similarity for AC lines connected to HVDC inverter station |
| title_sort | pilot protection scheme based on high frequency transient current waveform similarity for ac lines connected to hvdc inverter station |
| topic | AC transmission line improved longest common similar subsequence pilot protection synchronous squeezed S‐transform transient Current |
| url | https://doi.org/10.1049/gtd2.13134 |
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