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中文摘要：
为了给出多异端短路比的变化规律,本文基于CIGRE模型建立了两异端直流输电模型,在此基础上深入研究了整流站与逆变站临近的多直流落点系统短路比RNISCR （short circuit ratio of rectifier station near the inverter station system with multiple HVDC links）指标,并讨论了直流输送功率及电气距离对它的影响.该短路比指标是以往仅考虑受端的多馈入短路比的扩展.最后,PSCAD软件对两异端直流输电模型的仿真结果验证了该指标的有效性和准确性.
英文摘要：
In this paper,the variation characteristic of RNISCR was proposed.Initially,a two-different end DC power transmission was constructed based on CIGRE model.After that,RNISCR and affection to RNISCR of how much DC power transmitted and electrical distance were analyzed and discussed as well.In fact,RNISCR is an expanded study of multi-infeed short circuit ratio of the receiving end,which is considering both sending and receiving ends.Finally,though verified the simulink result of two-different end DC power transmission model with PSCAD software,the validity and accuracy of RNISCR were confirmed successfully.
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