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基于包络线聚类的多模融合超短期光伏功率预测算法 被引量:22
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作者 杨国清 张凯 +2 位作者 王德意 刘菁 秦美荣 《电力自动化设备》 EI CSCD 北大核心 2021年第2期39-46,共8页
针对传统功率预测方法以气象因素进行聚类划分时各气象因素权重难以分配以及单模型预测精度较差的问题,提出一种基于光伏功率包络线聚类的多模融合超短期光伏功率预测算法。对异常特征数据进行预处理,采用Pearson相关系数与XGB Feature ... 针对传统功率预测方法以气象因素进行聚类划分时各气象因素权重难以分配以及单模型预测精度较差的问题,提出一种基于光伏功率包络线聚类的多模融合超短期光伏功率预测算法。对异常特征数据进行预处理,采用Pearson相关系数与XGB Feature Importance模块分析光伏功率和各特征之间的相关关系,并构建新特征;介绍包络线理论,并根据光伏功率包络线参数进行聚类划分,将聚类后的数据作为输入,借鉴Stacking集成学习框架构造XGBoost+LightGBM+LSTM融合模型对光伏功率进行预测;将所提算法与气象因素聚类和功率区间聚类下的各预测算法进行实验对比;为了避免训练过程中模型超参数的影响,采用K折交叉验证对数据的训练集、验证集和测试集进行划分。仿真结果表明,所提算法较气象因素和功率区间聚类法能有效提高复杂天气情况下光伏功率预测精度,且多模融合效果总体优于单独算法模型。 展开更多
关键词 光伏功率预测 包络线聚类 多模融合算法 特征工程 K折交叉验证
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Multisensor Fuzzy Stochastic Fusion Based on Genetic Algorithms 被引量:3
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作者 胡昌振 谭惠民 《Journal of Beijing Institute of Technology》 EI CAS 2000年第1期49-54,共6页
To establish a parallel fusion approach of processing high dimensional information, the model and criterion of multisensor fuzzy stochastic data fusion were presented. In order to design genetic algorithm fusion, the ... To establish a parallel fusion approach of processing high dimensional information, the model and criterion of multisensor fuzzy stochastic data fusion were presented. In order to design genetic algorithm fusion, the fusion parameter coding, initial population and fitness function establishing, and fuzzy logic controller designing for genetic operations and probability choosing were completed. The discussion on the highly dimensional fusion was given. For a moving target with the division of 1 64 (velocity) and 1 75 (acceleration), the precision of fusion is 0 94 and 0 98 respectively. The fusion approach can improve the reliability and decision precision effectively. 展开更多
关键词 MULTISENSOR data fusion fuzzy random genetic algorithm
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A novel fuzzy sensor fusion algorithm 被引量:1
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作者 FU Hua YANG Yi-kui MAKe LIU Yu-jia 《Journal of Coal Science & Engineering(China)》 2011年第4期457-460,共4页
A novel fusion algorithm was given based on fuzzy similarity and fuzzy integral theory. First, it calculated the fuzzy similarity among a certain sensor's measurement values and the multiple sensors' objective predi... A novel fusion algorithm was given based on fuzzy similarity and fuzzy integral theory. First, it calculated the fuzzy similarity among a certain sensor's measurement values and the multiple sensors' objective prediction values to determine the importance weight of each sensor and realize multi-sensor data fusion. Then according to the determined importance weight, an intelligent fusion system based on fuzzy integral theory was given, which can solve FEI-DEO and DEI-DEO fusion problems and realize the decision fusion. Simulation results were proved that fuzzy integral algorithm has enhanced the capability of handling the uncertain information and improved the intelligence degrees 展开更多
关键词 fuzzy similarity fuzzy integral data fusion decision fusion MULTI-SENSOR
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