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适用于连锁故障的交直流电网静态等值方法

Zhen-an ZHANG,Xue-min ZHANG,Hao-yuan QU,Xiao-meng LI,Rui YAO, Xiang-yu ZHANG

Advanced Technology of Electrical Engineering and Energy（2014）

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Abstract
为了提高连锁故障分析的效率,研究了交直流电网的静态等值方法.首先,将直流线路等效为交流线路,然后使用扩展Ward等值对外网进行化简.在现有方法提供的等值网络阻抗和功率的基础上,提出了等值线路、发电和负荷的容量设置、故障设置的方法.对比了直流线路的交流等效阻抗法和等效负荷法的误差.利用IEEE 118系统验证了所提方法对连锁故障分析的有效性.
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power systems,/dc
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