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中文摘要：
结合电网分层分区运行特点，提出了基于分区的大电网可靠性评估方法．分析了电网各分区之间的关联性及各分区的边界等效支路，研究了各分区间可靠性计算指标的合成方法，得到大电网的可靠性评估指标，还可有效地评估大电网的薄弱点．以某省电网为例进行了仿真计算，验证了所提出的大电网分区的可靠性评估方法的合理性，为大电网的可靠性规划管理及运行控制提供参考．
英文摘要：
The method to the reliability of large-scale power grids by partition was put forward, the partition principle of the reliability evaluation was analyzed, the relevance and equivalent boundary branch was studies between power grid areas. The synthetic method of reliability calculation indices was studied upon every power grid partition. Based on this method, the reliability evaluation indices of the large scale power grid may was obtained, which may evaluate the weakness of power grid. One provincial power grid were simulated. Results show that the reliability evaluation method of large scale power grid partition is reasonable. The method can provide reference for the reliability planning and operation control in large scale power grids.
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