基于保护脆弱度加权拓扑模型下的电网脆弱性评估

来源 :中国电机工程学报 | 被引量 : 0次 | 上传用户:ydaf1aj9
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
电网中存在的某些脆弱环节对系统大停电事故有着重要的影响。为了有效辨识出这些脆弱环节,提出了基于保护脆弱度加权拓扑模型下的脆弱性评估方法。定义了保护配合度、保护故障严重度和保护脆弱度,并以此提出了单元保护脆弱强度的概念,量化了保护装置的脆弱度对电网中单元脆弱性的贡献程度;建立了基于保护脆弱度的拓扑模型,并给出了加权后相应复杂网络参数的定义;由此,提出了结合单元保护脆弱强度与介数的电网脆弱性评估方法。算例结果验证了所提方法在保持复杂网络理论对结构脆弱性有较好辨识效果的基础上,有效地计及了保护装置脆弱性因素对电网脆弱性的影响,提高了脆弱辨识效果和精度,表明该方法简单有效,具有一定的应用前景。
其他文献
The small phenolic compound salicylic acid (SA) plays an important regulatory role in multiple physiological processes including plant immune response. Signific
The authors present an algorithm which is a modification of the Nguyen-Stehle greedy reduction algorithm due to Nguyen and Stehle in 2009.This algorithm can be
The non-uniqueness of solution and compatibility between the coupled boundary conditions in computing velocity potential and streamfunction from horizontal velo
Background Prior studies have demonstrated worse results of women in both hospital and short-term outcomes post-percutaneous coronary intervention. However, wit
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7
The combination of leachate recirculation and aeration to landfill may be an efficient way for in-situ nitrogen removal. However, nitrogenous substances contain
Abscisic acid (ABA) is the key plant stress hormone. Consistent with the earlier studies in support of the presence of both membrane- and cytoplasm-localized AB
利用超声波法制备高质量CdTe半导体纳米晶体,采用该方法不仅降低了实验成本,简化了实验流程,而且还可制备出量子产率达到50%的CdTe纳米晶体,具有较好的光谱学性质,可用于莱姆
内点法是求解复杂优化问题的重要算法,对不等式约束的处理是影响算法性能的关键因素之一,更严苛的不等式约束标志着更好的优化指标和更差的收敛性。为缓解这种矛盾,提出一种按类
Built on the integral formulas in Part I,numerical methods are developed for computing velocity potential and streamfunction in a limited domain.When there is n