Research on protection block strategy of grounding faults in HVDC converter station
DC grounding fault is a typical fault for HVDC system. In order to obtain smoother, faster, and more secure transient process, the DC protection block strategy is used to remove and isolate the converter to prevent the accident enlargement and reduce the impact on devices and power grid when the gro...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2019-04-01
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| Series: | The Journal of Engineering |
| Subjects: | |
| Online Access: | https://digital-library.theiet.org/content/journals/10.1049/joe.2018.8478 |
| _version_ | 1818721325711097856 |
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| author | Yichen Liu Xiaoguang Zhu Junbo Deng Jie Guo Fang Yu Jiangtao Li |
| author_facet | Yichen Liu Xiaoguang Zhu Junbo Deng Jie Guo Fang Yu Jiangtao Li |
| author_sort | Yichen Liu |
| collection | DOAJ |
| description | DC grounding fault is a typical fault for HVDC system. In order to obtain smoother, faster, and more secure transient process, the DC protection block strategy is used to remove and isolate the converter to prevent the accident enlargement and reduce the impact on devices and power grid when the grounding fault is detected. Two main strategies are commonly taken in this situation: the X block for not >±500 kV and the S block for ±800 kV. There is no specific principle on the strategy choosing for ±1100 kV UHVDC system with hierarchical connection mode. Changji–Guquan ±1100 kV UHVDC transmission project adopting hierarchical connection mode at receiving end. In this study, the effects of different DC block strategies when grounding faults occurred in both converter stations are compared based on PSCAD simulation. The simulation results indicate that the overvoltage at rectifier side has two stages while the overvoltage at inverter side has only one. Taking S block strategy can cause lower overvoltage but longer oscillation duration on grounding current. The proper block strategy for ±1100 kV UHVDC grounding faults is adopting S block at rectifier side and X block at inverter side. |
| first_indexed | 2024-12-17T20:36:57Z |
| format | Article |
| id | doaj.art-81a137cbdb7e42fb8b12039e074c4176 |
| institution | Directory Open Access Journal |
| issn | 2051-3305 |
| language | English |
| last_indexed | 2024-12-17T20:36:57Z |
| publishDate | 2019-04-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Journal of Engineering |
| spelling | doaj.art-81a137cbdb7e42fb8b12039e074c41762022-12-21T21:33:25ZengWileyThe Journal of Engineering2051-33052019-04-0110.1049/joe.2018.8478JOE.2018.8478Research on protection block strategy of grounding faults in HVDC converter stationYichen Liu0Xiaoguang Zhu1Junbo Deng2Jie Guo3Fang Yu4Jiangtao Li5State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong UniversityState Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong UniversityState Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong UniversityState Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong UniversityState Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong UniversityState Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong UniversityDC grounding fault is a typical fault for HVDC system. In order to obtain smoother, faster, and more secure transient process, the DC protection block strategy is used to remove and isolate the converter to prevent the accident enlargement and reduce the impact on devices and power grid when the grounding fault is detected. Two main strategies are commonly taken in this situation: the X block for not >±500 kV and the S block for ±800 kV. There is no specific principle on the strategy choosing for ±1100 kV UHVDC system with hierarchical connection mode. Changji–Guquan ±1100 kV UHVDC transmission project adopting hierarchical connection mode at receiving end. In this study, the effects of different DC block strategies when grounding faults occurred in both converter stations are compared based on PSCAD simulation. The simulation results indicate that the overvoltage at rectifier side has two stages while the overvoltage at inverter side has only one. Taking S block strategy can cause lower overvoltage but longer oscillation duration on grounding current. The proper block strategy for ±1100 kV UHVDC grounding faults is adopting S block at rectifier side and X block at inverter side.https://digital-library.theiet.org/content/journals/10.1049/joe.2018.8478power gridsearthingHVDC power transmissionHVDC power convertorspower transmission protectionovervoltage protectionpower transmission faultsrectifiersinvertorspower system securityHVDC converter stationDC grounding faultHVDC systemsecure transient processDC protection block strategyX blockhierarchical connection modeS block strategyUHVDC systemUHVDC transmission projectpower gridChangji-GuquanUHVDC grounding faultsPSCAD simulationovervoltagerectifier sidegrounding currentinverter side |
| spellingShingle | Yichen Liu Xiaoguang Zhu Junbo Deng Jie Guo Fang Yu Jiangtao Li Research on protection block strategy of grounding faults in HVDC converter station The Journal of Engineering power grids earthing HVDC power transmission HVDC power convertors power transmission protection overvoltage protection power transmission faults rectifiers invertors power system security HVDC converter station DC grounding fault HVDC system secure transient process DC protection block strategy X block hierarchical connection mode S block strategy UHVDC system UHVDC transmission project power grid Changji-Guquan UHVDC grounding faults PSCAD simulation overvoltage rectifier side grounding current inverter side |
| title | Research on protection block strategy of grounding faults in HVDC converter station |
| title_full | Research on protection block strategy of grounding faults in HVDC converter station |
| title_fullStr | Research on protection block strategy of grounding faults in HVDC converter station |
| title_full_unstemmed | Research on protection block strategy of grounding faults in HVDC converter station |
| title_short | Research on protection block strategy of grounding faults in HVDC converter station |
| title_sort | research on protection block strategy of grounding faults in hvdc converter station |
| topic | power grids earthing HVDC power transmission HVDC power convertors power transmission protection overvoltage protection power transmission faults rectifiers invertors power system security HVDC converter station DC grounding fault HVDC system secure transient process DC protection block strategy X block hierarchical connection mode S block strategy UHVDC system UHVDC transmission project power grid Changji-Guquan UHVDC grounding faults PSCAD simulation overvoltage rectifier side grounding current inverter side |
| url | https://digital-library.theiet.org/content/journals/10.1049/joe.2018.8478 |
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