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Theoretical Parameter Design Method of SFCL for Concurrent Commutation Failure Inhibition in SFCL-Segmented Multi-Infeed LCC-HVDC Systems
IEEE Transactions on Power Systems ( IF 6.5 ) Pub Date : 2020-05-01 , DOI: 10.1109/tpwrs.2019.2953191
Yinhong Li , Hao Xiao , Xianzhong Duan

Earlier works have reported the emerging fault current limiter (FCL) segmentation technique to mitigate concurrent commutation failure (CF) under ac faults in multi-infeed LCC-HVDC systems. However, the FCL's parameter is determined by the electromagnetic transient (EMT) simulation based method, which will lead to enormous workload and long computation time. Moreover, the subsequent CF after ac faults clearance has been ignored. Thus, this paper proposes a theoretical parameter design method of superconducting FCL (SFCL) for concurrent CF inhibition in SFCL-segmented multi-infeed LCC-HVDC systems. Firstly, a comprehensive evaluation approach of CF performance is introduced considering not only the voltage depression and distortion induced concurrent CFs but also the subsequent CF. This can give a more comprehensive CF evaluation than earlier works since the subsequent CF is considered in this approach. Secondly, three SFCL's parameter related evaluation indices, which can assess the SFCL's impact on the abovementioned three types of CF, are proposed to develop the proposed method based on the comprehensive CF evaluation approach. Compared to the simulation based method, the proposed method is implemented more efficiently without EMT simulations, and more effectively with the subsequent CF considered. Finally, the simulations based on dual-infeed and tri-infeed LCC-HVDC systems validate the proposed method.

中文翻译:

SFCL-分段多馈入LCC-HVDC系统中用于抑制并发换相故障的SFCL的理论参数设计方法

早期的工作报告了新兴的故障限流器 (FCL) 分段技术,以减轻多馈入 LCC-HVDC 系统中交流故障下的并发换向故障 (CF)。然而,FCL的参数是由基于电磁瞬态(EMT)模拟的方法确定的,这将导致巨大的工作量和较长的计算时间。此外,交流故障清除后的后续 CF 已被忽略。因此,本文提出了一种超导 FCL (SFCL) 的理论参数设计方法,用于 SFCL 分段多馈入 LCC-HVDC 系统中的并发 CF 抑制。首先,介绍了一种综合评估 CF 性能的方法,不仅考虑了电压下降和失真引起的并发 CF,还考虑了后续的 CF。这可以提供比早期工作更全面的 CF 评估,因为在这种方法中考虑了后续的 CF。其次,提出了三个SFCL参数相关的评价指标,可以评估SFCL对上述三类CF的影响,以开发基于CFCL综合评价方法的方法。与基于模拟的方法相比,所提出的方法在没有 EMT 模拟的情况下更有效地实施,并且在考虑后续 CF 的情况下更有效。最后,基于双馈电和三馈电 LCC-HVDC 系统的仿真验证了所提出的方法。建议开发基于综合 CF 评估方法的方法。与基于模拟的方法相比,所提出的方法在没有 EMT 模拟的情况下更有效地实施,并且在考虑后续 CF 的情况下更有效。最后,基于双馈电和三馈电 LCC-HVDC 系统的仿真验证了所提出的方法。建议开发基于综合 CF 评估方法的方法。与基于模拟的方法相比,所提出的方法在没有 EMT 模拟的情况下更有效地实施,并且在考虑后续 CF 的情况下更有效。最后,基于双馈电和三馈电 LCC-HVDC 系统的仿真验证了所提出的方法。
更新日期:2020-05-01
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