Research on the Voltage Supporting Capability of Multi-VSC-HVDC Subsystems Operation Strategy to Receiving-end LCC-HVDC Network in Weak AC Grid
For the hybrid multi-infeed HVDC system in which the receiving-end grid is a strong AC grid including LCC-HVDC subsystems and multiple VSC-HVDC subsystems, it has higher voltage support capability. However, for weak AC grid, the voltage support capability of the multi-VSC-HVDC subsystems to the LCC-...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
China Electrotechnical Society
2023-03-01
|
| Series: | CES Transactions on Electrical Machines and Systems |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/10018852 |
| _version_ | 1797755731099779072 |
|---|---|
| author | Tao Li Yongli Li Yuchen Zhu |
| author_facet | Tao Li Yongli Li Yuchen Zhu |
| author_sort | Tao Li |
| collection | DOAJ |
| description | For the hybrid multi-infeed HVDC system in which the receiving-end grid is a strong AC grid including LCC-HVDC subsystems and multiple VSC-HVDC subsystems, it has higher voltage support capability. However, for weak AC grid, the voltage support capability of the multi-VSC-HVDC subsystems to the LCC-HVDC subsystem (voltage support capability-mVSCs-LCC) can resist the risk of commutation failure. Based on this consideration, this paper proposes an evaluation index called Dynamic Voltage Support Strength Factor (DVSF) for the hybrid multi-infeed system, and uses this index to qualitatively judge the voltage support capability-mVSCs-LCC in weak AC grid. In addition, the proposed evaluation index can also indirectly judge the ability of the LCC-HVDC subsystem to suppress commutation failure. Firstly, the mathematical model of the power flow of the LCC and VSC networks in the steady-state is analyzed, and the concept of DVSF applied to hybrid multi-infeed system is proposed. Furthermore, the DVSF index is also used to qualitatively judge the voltage support capability-mVSCs-LCC. Secondly, the influence of multiple VSC-HVDC subsystems with different operation strategies on the DVSF is analyzed with reference to the concept of DVSF. Finally, the indicators proposed in this paper are compared with other evaluation indicators through MATLAB simulation software to verify its effectiveness. More importantly, the effects of multi- VSC-HVDC subsystems using different coordinated control strategies on the voltage support capability of the receiving-end LCC-HVDC subsystem are also verified. |
| first_indexed | 2024-03-12T17:50:25Z |
| format | Article |
| id | doaj.art-45fa01f07b304b8194b6b5a2a09c2663 |
| institution | Directory Open Access Journal |
| issn | 2096-3564 2837-0325 |
| language | English |
| last_indexed | 2024-03-12T17:50:25Z |
| publishDate | 2023-03-01 |
| publisher | China Electrotechnical Society |
| record_format | Article |
| series | CES Transactions on Electrical Machines and Systems |
| spelling | doaj.art-45fa01f07b304b8194b6b5a2a09c26632023-08-03T08:07:00ZengChina Electrotechnical SocietyCES Transactions on Electrical Machines and Systems2096-35642837-03252023-03-0171112010.30941/CESTEMS.2023.00007Research on the Voltage Supporting Capability of Multi-VSC-HVDC Subsystems Operation Strategy to Receiving-end LCC-HVDC Network in Weak AC GridTao Li0Yongli Li1Yuchen Zhu2School of Electrical Automation and Information Engineering, Tianjin University, Tianjin, ChinaSchool of Electrical Automation and Information Engineering, Tianjin University, Tianjin, ChinaSchool of Electrical Automation and Information Engineering, Tianjin University, Tianjin, ChinaFor the hybrid multi-infeed HVDC system in which the receiving-end grid is a strong AC grid including LCC-HVDC subsystems and multiple VSC-HVDC subsystems, it has higher voltage support capability. However, for weak AC grid, the voltage support capability of the multi-VSC-HVDC subsystems to the LCC-HVDC subsystem (voltage support capability-mVSCs-LCC) can resist the risk of commutation failure. Based on this consideration, this paper proposes an evaluation index called Dynamic Voltage Support Strength Factor (DVSF) for the hybrid multi-infeed system, and uses this index to qualitatively judge the voltage support capability-mVSCs-LCC in weak AC grid. In addition, the proposed evaluation index can also indirectly judge the ability of the LCC-HVDC subsystem to suppress commutation failure. Firstly, the mathematical model of the power flow of the LCC and VSC networks in the steady-state is analyzed, and the concept of DVSF applied to hybrid multi-infeed system is proposed. Furthermore, the DVSF index is also used to qualitatively judge the voltage support capability-mVSCs-LCC. Secondly, the influence of multiple VSC-HVDC subsystems with different operation strategies on the DVSF is analyzed with reference to the concept of DVSF. Finally, the indicators proposed in this paper are compared with other evaluation indicators through MATLAB simulation software to verify its effectiveness. More importantly, the effects of multi- VSC-HVDC subsystems using different coordinated control strategies on the voltage support capability of the receiving-end LCC-HVDC subsystem are also verified.https://ieeexplore.ieee.org/document/10018852hybrid multi-infeed hvdc systemvoltage supportmulti-vsc-hvdclcc-hvdccommutation failuredvsfcontrol strategy |
| spellingShingle | Tao Li Yongli Li Yuchen Zhu Research on the Voltage Supporting Capability of Multi-VSC-HVDC Subsystems Operation Strategy to Receiving-end LCC-HVDC Network in Weak AC Grid CES Transactions on Electrical Machines and Systems hybrid multi-infeed hvdc system voltage support multi-vsc-hvdc lcc-hvdc commutation failure dvsf control strategy |
| title | Research on the Voltage Supporting Capability of Multi-VSC-HVDC Subsystems Operation Strategy to Receiving-end LCC-HVDC Network in Weak AC Grid |
| title_full | Research on the Voltage Supporting Capability of Multi-VSC-HVDC Subsystems Operation Strategy to Receiving-end LCC-HVDC Network in Weak AC Grid |
| title_fullStr | Research on the Voltage Supporting Capability of Multi-VSC-HVDC Subsystems Operation Strategy to Receiving-end LCC-HVDC Network in Weak AC Grid |
| title_full_unstemmed | Research on the Voltage Supporting Capability of Multi-VSC-HVDC Subsystems Operation Strategy to Receiving-end LCC-HVDC Network in Weak AC Grid |
| title_short | Research on the Voltage Supporting Capability of Multi-VSC-HVDC Subsystems Operation Strategy to Receiving-end LCC-HVDC Network in Weak AC Grid |
| title_sort | research on the voltage supporting capability of multi vsc hvdc subsystems operation strategy to receiving end lcc hvdc network in weak ac grid |
| topic | hybrid multi-infeed hvdc system voltage support multi-vsc-hvdc lcc-hvdc commutation failure dvsf control strategy |
| url | https://ieeexplore.ieee.org/document/10018852 |
| work_keys_str_mv | AT taoli researchonthevoltagesupportingcapabilityofmultivschvdcsubsystemsoperationstrategytoreceivingendlcchvdcnetworkinweakacgrid AT yonglili researchonthevoltagesupportingcapabilityofmultivschvdcsubsystemsoperationstrategytoreceivingendlcchvdcnetworkinweakacgrid AT yuchenzhu researchonthevoltagesupportingcapabilityofmultivschvdcsubsystemsoperationstrategytoreceivingendlcchvdcnetworkinweakacgrid |