A global fault current limiting strategy for the MMC-HVDC grid with a reduced DC reactor
A global fault current limiting strategy for the MMC-HVDC grid with a reduced DC reactor
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减少直流电抗器的MMC-HVDC电网全局故障限流策略
DOI:
10.1016/j.ijepes.2022.108088
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发表时间:
2022
影响因子:
5.2
通讯作者:
Juan Zhou
中科院分区:
文献类型:
--
作者:
Zheng Gong;Sihan Zhao;Xiaojie Wu;Changming Zheng;Juan Zhou
The large current limiting reactor (CLR) and DC circuit breaker (DCCB) are required in the half-bridge modular multilevel converter (HB-MMC) project to isolate the DC fault. To limit the fault current and reduce the CLR, a global virtual impedance-based fault current limiting (VIFCL) control strategy is proposed in this paper. This strategy includes two parts: the first part is a simplified adaptive fault current limiting control for limiting the DC fault current by reducing the arm modulating voltage of the MMC adaptively. The second part is a virtual impedance control for limiting the AC currents and the arm currents of the MMCs by mapping the virtual impedance to the reactive power control. The effectiveness of the proposed VIFCL control strategy is verified in the PSCAD/EMTDC using a four-terminal HVDC grid. The proposed global VIFCL control can limit the interrupted currents of the DCCBs and reduce the CLR. The proposed strategy is beneficial for the MMCs to ride through the DC faults safely without a significant influence on the power recovery of the HVDC system.
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影响因子:
4.4
作者:
Saizhao Yang;Wang Xiang;Meng Zhou;Wenping Zuo;Jinyu Wen
通讯作者:
Jinyu Wen
DOI:
10.1016/j.ijepes.2021.107260
发表时间:
2021
影响因子:
5.2
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4.4
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通讯作者:
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影响因子:
9.6
作者:
Fereidouni, Alireza R.;Vahidi, Behrooz;Mehr, Tahoura Hosseini
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