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考虑城镇生长特性的区域能源网演化模型 被引量:2
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作者 徐成司 董树锋 +2 位作者 鲁斌 吴振杰 徐航 《电网技术》 EI CSCD 北大核心 2023年第2期529-538,共10页
区域能源网的发展是新型城镇建设的重要环节,分析区域能源网的演化规律和形态特征,对于指导网络规划、运行具有重要意义。提出了一种考虑城镇生长特性的区域能源网演化模型,首先根据城镇生长特性总结了空间负荷的增长特性,进而借鉴复杂... 区域能源网的发展是新型城镇建设的重要环节,分析区域能源网的演化规律和形态特征,对于指导网络规划、运行具有重要意义。提出了一种考虑城镇生长特性的区域能源网演化模型,首先根据城镇生长特性总结了空间负荷的增长特性,进而借鉴复杂网络理论中的随机几何图模型模拟城镇负荷的增长过程,然后以最小化投资建设成本为目标,规划得到区域能源网的能源站和综合管线分布,给出区域能源网的演化流程,进一步通过理论分析了演化模型的空间和拓扑特征。算例分析结果表明演化所得区域能源网符合城镇和负荷的生长特性,其形态特征与理论分析结果一致,并且与实际电网具有相似的特征,验证了所提演化模型的合理性。 展开更多
关键词 区域能源网 城镇生长特性 复杂网络 随机几何图 演化模型 网络形态特征
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Wear Debris Identification Using Feature Extraction and Neural Network
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作者 王伟华 马艳艳 +1 位作者 殷勇辉 王成焘 《Journal of Donghua University(English Edition)》 EI CAS 2004年第4期42-45,共4页
A method and results of identification of wear debris using their morphological features are presented. The color images of wear debris were used as initial data. Each particle was characterized by a set of numerical ... A method and results of identification of wear debris using their morphological features are presented. The color images of wear debris were used as initial data. Each particle was characterized by a set of numerical parameters combined by its shape, color and surface texture features through a computer vision system. Those features were used as input vector of artificial neural network for wear debris identification. A radius basis function (RBF) network based model suitable for wear debris recognition was established, and its algorithm was presented in detail. Compared with traditional recognition methods, the RBF network model is faster in convergence, and higher in accuracy. 展开更多
关键词 wear debris CHARACTERIZATION neural network pattern recognition.
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