深度探索用户负荷可调节潜力是国家电力市场精细化发展的迫切需求。为有效感知电力用户负荷综合响应潜力,提出一种模糊粗糙环境下的混合评估模型。首先,从经济性、用户特性、负荷特性、信息特性等4个维度构建负荷响应潜力指标体系;其次...深度探索用户负荷可调节潜力是国家电力市场精细化发展的迫切需求。为有效感知电力用户负荷综合响应潜力,提出一种模糊粗糙环境下的混合评估模型。首先,从经济性、用户特性、负荷特性、信息特性等4个维度构建负荷响应潜力指标体系;其次,充分考虑评估中个体判断的模糊性和群体偏好的多样性,采用模糊粗糙数对个体语义评估信息进行处理和集结;然后,将模糊粗糙熵权法和逐步加权评估比率分析法(step-wise weight assessment ratio analysis,SWARA)相结合确定指标综合权重,并采用基于模糊粗糙数的改进多属性边界逼近区域比较法(multi-attributive border approximation area comparison,MABAC)计算电力用户针对属性函数的负荷响应潜力综合评估值,从而获取潜力排序结果;最后,以多个行业的电力用户负荷综合响应潜力评估为例,验证所提模型的有效性。展开更多
As threats of landslide hazards have become gradually more severe in recent decades,studies on landslide prevention and mitigation have attracted widespread attention in relevant domains.A hot research topic has been ...As threats of landslide hazards have become gradually more severe in recent decades,studies on landslide prevention and mitigation have attracted widespread attention in relevant domains.A hot research topic has been the ability to predict landslide susceptibility,which can be used to design schemes of land exploitation and urban development in mountainous areas.In this study,the teaching-learning-based optimization(TLBO)and satin bowerbird optimizer(SBO)algorithms were applied to optimize the adaptive neuro-fuzzy inference system(ANFIS)model for landslide susceptibility mapping.In the study area,152 landslides were identified and randomly divided into two groups as training(70%)and validation(30%)dataset.Additionally,a total of fifteen landslide influencing factors were selected.The relative importance and weights of various influencing factors were determined using the step-wise weight assessment ratio analysis(SWARA)method.Finally,the comprehensive performance of the two models was validated and compared using various indexes,such as the root mean square error(RMSE),processing time,convergence,and area under receiver operating characteristic curves(AUROC).The results demonstrated that the AUROC values of the ANFIS,ANFIS-TLBO and ANFIS-SBO models with the training data were 0.808,0.785 and 0.755,respectively.In terms of the validation dataset,the ANFISSBO model exhibited a higher AUROC value of 0.781,while the AUROC value of the ANFIS-TLBO and ANFIS models were 0.749 and 0.681,respectively.Moreover,the ANFIS-SBO model showed lower RMSE values for the validation dataset,indicating that the SBO algorithm had a better optimization capability.Meanwhile,the processing time and convergence of the ANFIS-SBO model were far superior to those of the ANFIS-TLBO model.Therefore,both the ensemble models proposed in this paper can generate adequate results,and the ANFIS-SBO model is recommended as the more suitable model for landslide susceptibility assessment in the study area considered due to its excellent accuracy and efficiency.展开更多
文摘深度探索用户负荷可调节潜力是国家电力市场精细化发展的迫切需求。为有效感知电力用户负荷综合响应潜力,提出一种模糊粗糙环境下的混合评估模型。首先,从经济性、用户特性、负荷特性、信息特性等4个维度构建负荷响应潜力指标体系;其次,充分考虑评估中个体判断的模糊性和群体偏好的多样性,采用模糊粗糙数对个体语义评估信息进行处理和集结;然后,将模糊粗糙熵权法和逐步加权评估比率分析法(step-wise weight assessment ratio analysis,SWARA)相结合确定指标综合权重,并采用基于模糊粗糙数的改进多属性边界逼近区域比较法(multi-attributive border approximation area comparison,MABAC)计算电力用户针对属性函数的负荷响应潜力综合评估值,从而获取潜力排序结果;最后,以多个行业的电力用户负荷综合响应潜力评估为例,验证所提模型的有效性。
基金supported by the National Natural Science Foundation of China(Grant Nos.41807192,41790441)Innovation Capability Support Program of Shaanxi(Grant No.2020KJXX-005)Natural Science Basic Research Program of Shaanxi(Grant Nos.2019JLM-7,2019JQ-094)。
文摘As threats of landslide hazards have become gradually more severe in recent decades,studies on landslide prevention and mitigation have attracted widespread attention in relevant domains.A hot research topic has been the ability to predict landslide susceptibility,which can be used to design schemes of land exploitation and urban development in mountainous areas.In this study,the teaching-learning-based optimization(TLBO)and satin bowerbird optimizer(SBO)algorithms were applied to optimize the adaptive neuro-fuzzy inference system(ANFIS)model for landslide susceptibility mapping.In the study area,152 landslides were identified and randomly divided into two groups as training(70%)and validation(30%)dataset.Additionally,a total of fifteen landslide influencing factors were selected.The relative importance and weights of various influencing factors were determined using the step-wise weight assessment ratio analysis(SWARA)method.Finally,the comprehensive performance of the two models was validated and compared using various indexes,such as the root mean square error(RMSE),processing time,convergence,and area under receiver operating characteristic curves(AUROC).The results demonstrated that the AUROC values of the ANFIS,ANFIS-TLBO and ANFIS-SBO models with the training data were 0.808,0.785 and 0.755,respectively.In terms of the validation dataset,the ANFISSBO model exhibited a higher AUROC value of 0.781,while the AUROC value of the ANFIS-TLBO and ANFIS models were 0.749 and 0.681,respectively.Moreover,the ANFIS-SBO model showed lower RMSE values for the validation dataset,indicating that the SBO algorithm had a better optimization capability.Meanwhile,the processing time and convergence of the ANFIS-SBO model were far superior to those of the ANFIS-TLBO model.Therefore,both the ensemble models proposed in this paper can generate adequate results,and the ANFIS-SBO model is recommended as the more suitable model for landslide susceptibility assessment in the study area considered due to its excellent accuracy and efficiency.