Hybrid ultra-HVDC system with LCC and cascaded hybrid MMC
Nowadays, the hybrid high-voltage direct current (HVDC) system consisting of line commutated converter (LCC) and modular multilevel converter (MMC) has become the most competitive candidate in multi-infeed power systems. Owing to the limitation of insulated-gate bipolar transistor's withstand v...
| 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.2018.8559 |
| _version_ | 1818644909267091456 |
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| author | Ruizhang Yang Wang Xiang Weixing Lin Jinyu Wen |
| author_facet | Ruizhang Yang Wang Xiang Weixing Lin Jinyu Wen |
| author_sort | Ruizhang Yang |
| collection | DOAJ |
| description | Nowadays, the hybrid high-voltage direct current (HVDC) system consisting of line commutated converter (LCC) and modular multilevel converter (MMC) has become the most competitive candidate in multi-infeed power systems. Owing to the limitation of insulated-gate bipolar transistor's withstand voltage, the DC voltage rating of MMC is not compatible with the LCC valve. To increase the DC voltage level, the number of sub-modules of each arm should be increased drastically, leading to many technical problems in communication design, optical fibre instalment, cooler system design and so on. To overcome the above problems, a hybrid HVDC system consisting of LCC and cascaded hybrid MMC valves is proposed to realise ultra-HVDC transmission. It can switch two operating modes (single valve/double valve) according to the conditions so that the system can maintain a certain power transmission when one of the valves quit operation during faults or maintenances. Meanwhile, by implementing the hybrid MMC, the system can ride through DC faults. The design of the topology and controllers, the DC fault ride-through strategy and the online switching strategy for MMCs will be presented in this study. Finally, the performance during DC faults and online switching is verified by extensive simulations. |
| first_indexed | 2024-12-17T00:22:20Z |
| format | Article |
| id | doaj.art-226e7ccbb50f4406807d2cd0fe83d987 |
| institution | Directory Open Access Journal |
| issn | 2051-3305 |
| language | English |
| last_indexed | 2024-12-17T00:22:20Z |
| publishDate | 2019-04-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Journal of Engineering |
| spelling | doaj.art-226e7ccbb50f4406807d2cd0fe83d9872022-12-21T22:10:32ZengWileyThe Journal of Engineering2051-33052019-04-0110.1049/joe.2018.8559JOE.2018.8559Hybrid ultra-HVDC system with LCC and cascaded hybrid MMCRuizhang Yang0Wang Xiang1Weixing Lin2Jinyu Wen3Huazhong University of Science and TechnologyHuazhong University of Science and TechnologyTBEA China Xinjiang Sunoasis Co., LtdHuazhong University of Science and TechnologyNowadays, the hybrid high-voltage direct current (HVDC) system consisting of line commutated converter (LCC) and modular multilevel converter (MMC) has become the most competitive candidate in multi-infeed power systems. Owing to the limitation of insulated-gate bipolar transistor's withstand voltage, the DC voltage rating of MMC is not compatible with the LCC valve. To increase the DC voltage level, the number of sub-modules of each arm should be increased drastically, leading to many technical problems in communication design, optical fibre instalment, cooler system design and so on. To overcome the above problems, a hybrid HVDC system consisting of LCC and cascaded hybrid MMC valves is proposed to realise ultra-HVDC transmission. It can switch two operating modes (single valve/double valve) according to the conditions so that the system can maintain a certain power transmission when one of the valves quit operation during faults or maintenances. Meanwhile, by implementing the hybrid MMC, the system can ride through DC faults. The design of the topology and controllers, the DC fault ride-through strategy and the online switching strategy for MMCs will be presented in this study. Finally, the performance during DC faults and online switching is verified by extensive simulations.https://digital-library.theiet.org/content/journals/10.1049/joe.2018.8559HVDC power convertorspower transmission controlHVDC power transmissionshort-circuit currentscascade networkshybrid power systemsvalvesswitching convertorspower transmission faultsvoltage-source convertorshigh-voltage direct current systemmodular multilevel convertercompetitive candidatemultiinfeed power systemsinsulated-gate bipolar transistorDC voltage ratingLCC valvehybrid MMC valvesultra-HVDC transmissionpower transmissionDC fault ride-through strategyhybrid ultra-HVDC systemonline switching strategyline commutated converter |
| spellingShingle | Ruizhang Yang Wang Xiang Weixing Lin Jinyu Wen Hybrid ultra-HVDC system with LCC and cascaded hybrid MMC The Journal of Engineering HVDC power convertors power transmission control HVDC power transmission short-circuit currents cascade networks hybrid power systems valves switching convertors power transmission faults voltage-source convertors high-voltage direct current system modular multilevel converter competitive candidate multiinfeed power systems insulated-gate bipolar transistor DC voltage rating LCC valve hybrid MMC valves ultra-HVDC transmission power transmission DC fault ride-through strategy hybrid ultra-HVDC system online switching strategy line commutated converter |
| title | Hybrid ultra-HVDC system with LCC and cascaded hybrid MMC |
| title_full | Hybrid ultra-HVDC system with LCC and cascaded hybrid MMC |
| title_fullStr | Hybrid ultra-HVDC system with LCC and cascaded hybrid MMC |
| title_full_unstemmed | Hybrid ultra-HVDC system with LCC and cascaded hybrid MMC |
| title_short | Hybrid ultra-HVDC system with LCC and cascaded hybrid MMC |
| title_sort | hybrid ultra hvdc system with lcc and cascaded hybrid mmc |
| topic | HVDC power convertors power transmission control HVDC power transmission short-circuit currents cascade networks hybrid power systems valves switching convertors power transmission faults voltage-source convertors high-voltage direct current system modular multilevel converter competitive candidate multiinfeed power systems insulated-gate bipolar transistor DC voltage rating LCC valve hybrid MMC valves ultra-HVDC transmission power transmission DC fault ride-through strategy hybrid ultra-HVDC system online switching strategy line commutated converter |
| url | https://digital-library.theiet.org/content/journals/10.1049/joe.2018.8559 |
| work_keys_str_mv | AT ruizhangyang hybridultrahvdcsystemwithlccandcascadedhybridmmc AT wangxiang hybridultrahvdcsystemwithlccandcascadedhybridmmc AT weixinglin hybridultrahvdcsystemwithlccandcascadedhybridmmc AT jinyuwen hybridultrahvdcsystemwithlccandcascadedhybridmmc |