Power operation region modeling and transient overvoltage suppression strategy of hybrid cascaded HVDC
The hybrid cascaded HVDC system(HC-HVDC) in sending end system is composed of an Line Commutated Converter(LCC) connected in series with a parallel group of Modular Multilevel Converters (MMC). This system offers high flexibility and strong adaptability to weak systems. However, since the commutatio...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-08-01
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| Series: | International Journal of Electrical Power & Energy Systems |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0142061525003515 |
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| author | Jiangshan Liu Fengting Li Chunya Yin Ruikang Chen Lu Han Yingping Shi |
| author_facet | Jiangshan Liu Fengting Li Chunya Yin Ruikang Chen Lu Han Yingping Shi |
| author_sort | Jiangshan Liu |
| collection | DOAJ |
| description | The hybrid cascaded HVDC system(HC-HVDC) in sending end system is composed of an Line Commutated Converter(LCC) connected in series with a parallel group of Modular Multilevel Converters (MMC). This system offers high flexibility and strong adaptability to weak systems. However, since the commutation failure (CF) is easy to occur at the inverter side in the LCC, which can lead to the transient overvoltage at the rectifier side. The mechanism and voltage characteristics of the transient overvoltage are not yet clear. To handle this problem, firstly, the mechanism of transient overvoltage caused by CF is analyzed. Then, the power operation region of the sending end HC-HVDC considering transient overvoltage constraints is established. Based on this analysis, a transient overvoltage suppression strategy is proposed. It determines the increment in reactive power consumption of MMC and LCC based on different power operating points. The reactive power surplus at the sending end system can be reduced, and the transient overvoltage can be suppressed. Finally, a simulation model in PSCAD/EMTDC platform to verify the mechanism of transient overvoltage and the transient overvoltage suppression effect of the proposed strategy in the situation of different fault types, fault duration, fault severity and short circuit ratio is verified. |
| format | Article |
| id | doaj-art-8afff0fbc922486f9bae5ca1aa417d65 |
| institution | OA Journals |
| issn | 0142-0615 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | International Journal of Electrical Power & Energy Systems |
| spelling | doaj-art-8afff0fbc922486f9bae5ca1aa417d652025-08-20T02:36:06ZengElsevierInternational Journal of Electrical Power & Energy Systems0142-06152025-08-0116911080310.1016/j.ijepes.2025.110803Power operation region modeling and transient overvoltage suppression strategy of hybrid cascaded HVDCJiangshan Liu0Fengting Li1Chunya Yin2Ruikang Chen3Lu Han4Yingping Shi5School of Electrical Engineering, Xinjiang University, Urumqi, ChinaCorresponding author.; School of Electrical Engineering, Xinjiang University, Urumqi, ChinaSchool of Electrical Engineering, Xinjiang University, Urumqi, ChinaSchool of Electrical Engineering, Xinjiang University, Urumqi, ChinaSchool of Electrical Engineering, Xinjiang University, Urumqi, ChinaSchool of Electrical Engineering, Xinjiang University, Urumqi, ChinaThe hybrid cascaded HVDC system(HC-HVDC) in sending end system is composed of an Line Commutated Converter(LCC) connected in series with a parallel group of Modular Multilevel Converters (MMC). This system offers high flexibility and strong adaptability to weak systems. However, since the commutation failure (CF) is easy to occur at the inverter side in the LCC, which can lead to the transient overvoltage at the rectifier side. The mechanism and voltage characteristics of the transient overvoltage are not yet clear. To handle this problem, firstly, the mechanism of transient overvoltage caused by CF is analyzed. Then, the power operation region of the sending end HC-HVDC considering transient overvoltage constraints is established. Based on this analysis, a transient overvoltage suppression strategy is proposed. It determines the increment in reactive power consumption of MMC and LCC based on different power operating points. The reactive power surplus at the sending end system can be reduced, and the transient overvoltage can be suppressed. Finally, a simulation model in PSCAD/EMTDC platform to verify the mechanism of transient overvoltage and the transient overvoltage suppression effect of the proposed strategy in the situation of different fault types, fault duration, fault severity and short circuit ratio is verified.http://www.sciencedirect.com/science/article/pii/S0142061525003515Hybrid cascaded HVDC systemTransient overvoltagePower operation regionCooperative control |
| spellingShingle | Jiangshan Liu Fengting Li Chunya Yin Ruikang Chen Lu Han Yingping Shi Power operation region modeling and transient overvoltage suppression strategy of hybrid cascaded HVDC International Journal of Electrical Power & Energy Systems Hybrid cascaded HVDC system Transient overvoltage Power operation region Cooperative control |
| title | Power operation region modeling and transient overvoltage suppression strategy of hybrid cascaded HVDC |
| title_full | Power operation region modeling and transient overvoltage suppression strategy of hybrid cascaded HVDC |
| title_fullStr | Power operation region modeling and transient overvoltage suppression strategy of hybrid cascaded HVDC |
| title_full_unstemmed | Power operation region modeling and transient overvoltage suppression strategy of hybrid cascaded HVDC |
| title_short | Power operation region modeling and transient overvoltage suppression strategy of hybrid cascaded HVDC |
| title_sort | power operation region modeling and transient overvoltage suppression strategy of hybrid cascaded hvdc |
| topic | Hybrid cascaded HVDC system Transient overvoltage Power operation region Cooperative control |
| url | http://www.sciencedirect.com/science/article/pii/S0142061525003515 |
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