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中文摘要：
基于多重扰动的概念对跨区域电网进行薄弱区域的选取研究。随着电网规模的日益扩大，电网中会不可避免地存在一些稳定性较差的薄弱环节。通过运用多重扰动这一更符合电网运行实际的观点。对华中各省市电网进行薄弱性分析研究。从多重扰动的角度对近期发生的湖南金竹山功率振荡事件的整个过程进行分析。得出扰动的相继发生是导致电网运行情况逐渐恶化的原因所在。在华中电网内部通过设置多重扰动序列，筛选出华中各省市负荷集中地区是电网中的薄弱环节，在湖南电网设置多重扰动序列验证了上述结论，并结合暂态能量函数的方法对结果加以分析校验。
英文摘要：
The Cross-Area Grid vulnerable region selection is analyzed based on the Muhi-Disturbance. The sector with low stability inevitably exists with the rapid development of the scale of the power grid. The vulnerability of Central China Grid has been analyzed in a more sensible view-the multi-disturbance. It could be derived by the analysis of the whole process of power oscillation event happened in Hunan Province JIN ZHU Mount that it is the occurrence of disturbance which led to the worse condition of the grid operation. The vulnerable segment where the load was most centralized, that is the link with more power flow was sifted from all nodes by setting multi-disturbance arrays inside the grid. The conclusion has also been verified at Lenin- Tianzhong 220KV transmission line in Henan Province by setting arrays, as well as test by integrating with transient energy functions to verify the simulation results.
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