Multi-level adaptive coordinated AC fault ride-through control strategy for hybrid cascaded UHVDC transmission system
Hybrid cascaded ultra high voltage direct current (UHVDC) integrates the advantages of line commutated converters (LCC) and voltage source converters (VSC). However, there is surplus power on the direct current (DC) side during alternating current (AC) faults at the receiving end, which may cause ov...
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| Format: | Article |
| Language: | zho |
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Editorial Department of Electric Power Engineering Technology
2025-01-01
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| Series: | 电力工程技术 |
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| Online Access: | https://www.epet-info.com/dlgcjsen/article/abstract/230906109 |
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| author | LYU Yanbei ZHAO Wenqiang SHI Qiaoming YAO Qixin SUI Shunke CHANG Haotian |
| author_facet | LYU Yanbei ZHAO Wenqiang SHI Qiaoming YAO Qixin SUI Shunke CHANG Haotian |
| author_sort | LYU Yanbei |
| collection | DOAJ |
| description | Hybrid cascaded ultra high voltage direct current (UHVDC) integrates the advantages of line commutated converters (LCC) and voltage source converters (VSC). However, there is surplus power on the direct current (DC) side during alternating current (AC) faults at the receiving end, which may cause overvoltage issues in VSC sub-modules. Based on the topological features of the hybrid cascaded UHVDC system, a multi-level adaptive coordinated control strategy is proposed, utilizing operation modes and electrical signals. Multi-level control strategies, namely controlling the negative sequence voltage of the faulty VSC converter, adopting the auxiliary DC voltage control of the sound VSC converters, switching on the controllable energy dissipation devices at the receiving end and retarding of the LCC converters at the sending end, adjusting the DC power of the converters at the sending and receiving ends, are adaptively coordinated within converters, between converters and between stations to effectively mitigate the overvoltage issues in VSC sub-modules and realize AC fault ride-through of the hybrid cascaded UHVDC system. A closed-loop real-time digital simulation test platform is built based on actual control and protection devices and the topology used on site. The test results show the validity of the proposed strategy. The proposed strategy has been successfully applied in the Baihetan-Jiangsu hybrid UHVDC project. |
| format | Article |
| id | doaj-art-e56f2132d31247f5b1a27867885152c0 |
| institution | Kabale University |
| issn | 2096-3203 |
| language | zho |
| publishDate | 2025-01-01 |
| publisher | Editorial Department of Electric Power Engineering Technology |
| record_format | Article |
| series | 电力工程技术 |
| spelling | doaj-art-e56f2132d31247f5b1a27867885152c02025-02-08T08:40:18ZzhoEditorial Department of Electric Power Engineering Technology电力工程技术2096-32032025-01-0144116517410.12158/j.2096-3203.2025.01.017230906109Multi-level adaptive coordinated AC fault ride-through control strategy for hybrid cascaded UHVDC transmission systemLYU Yanbei0ZHAO Wenqiang1SHI Qiaoming2YAO Qixin3SUI Shunke4CHANG Haotian5Nanjing NR Electric Co., Ltd., Nanjing 211102, ChinaNanjing NR Electric Co., Ltd., Nanjing 211102, ChinaNanjing NR Electric Co., Ltd., Nanjing 211102, ChinaState Grid Hubei Electric Power Co., Ltd. Direct Current Company, Yichang 443000, ChinaNanjing NR Electric Co., Ltd., Nanjing 211102, ChinaNanjing NR Electric Co., Ltd., Nanjing 211102, ChinaHybrid cascaded ultra high voltage direct current (UHVDC) integrates the advantages of line commutated converters (LCC) and voltage source converters (VSC). However, there is surplus power on the direct current (DC) side during alternating current (AC) faults at the receiving end, which may cause overvoltage issues in VSC sub-modules. Based on the topological features of the hybrid cascaded UHVDC system, a multi-level adaptive coordinated control strategy is proposed, utilizing operation modes and electrical signals. Multi-level control strategies, namely controlling the negative sequence voltage of the faulty VSC converter, adopting the auxiliary DC voltage control of the sound VSC converters, switching on the controllable energy dissipation devices at the receiving end and retarding of the LCC converters at the sending end, adjusting the DC power of the converters at the sending and receiving ends, are adaptively coordinated within converters, between converters and between stations to effectively mitigate the overvoltage issues in VSC sub-modules and realize AC fault ride-through of the hybrid cascaded UHVDC system. A closed-loop real-time digital simulation test platform is built based on actual control and protection devices and the topology used on site. The test results show the validity of the proposed strategy. The proposed strategy has been successfully applied in the Baihetan-Jiangsu hybrid UHVDC project.https://www.epet-info.com/dlgcjsen/article/abstract/230906109ultra high voltage direct current (uhvdc)hybrid cascaded topologymulti-level adaptivefault ride-throughsub-module overvoltage |
| spellingShingle | LYU Yanbei ZHAO Wenqiang SHI Qiaoming YAO Qixin SUI Shunke CHANG Haotian Multi-level adaptive coordinated AC fault ride-through control strategy for hybrid cascaded UHVDC transmission system 电力工程技术 ultra high voltage direct current (uhvdc) hybrid cascaded topology multi-level adaptive fault ride-through sub-module overvoltage |
| title | Multi-level adaptive coordinated AC fault ride-through control strategy for hybrid cascaded UHVDC transmission system |
| title_full | Multi-level adaptive coordinated AC fault ride-through control strategy for hybrid cascaded UHVDC transmission system |
| title_fullStr | Multi-level adaptive coordinated AC fault ride-through control strategy for hybrid cascaded UHVDC transmission system |
| title_full_unstemmed | Multi-level adaptive coordinated AC fault ride-through control strategy for hybrid cascaded UHVDC transmission system |
| title_short | Multi-level adaptive coordinated AC fault ride-through control strategy for hybrid cascaded UHVDC transmission system |
| title_sort | multi level adaptive coordinated ac fault ride through control strategy for hybrid cascaded uhvdc transmission system |
| topic | ultra high voltage direct current (uhvdc) hybrid cascaded topology multi-level adaptive fault ride-through sub-module overvoltage |
| url | https://www.epet-info.com/dlgcjsen/article/abstract/230906109 |
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