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基于电力负荷曲线的设备识别方法

Equipment identification from power load profile

  • 摘要: 电力设备的负荷曲线随着时间而变化,其本质上是时间序列数据.为此提出了一种新的通过负荷曲线识别电力设备的方法,该方法在多个粒度划分出的负载曲线上使用卷积神经网络作为基分类器构造出一个集成学习器来提高分类精度.首先我们对原始数据进行不同粒度的划分,得到若干不同的新数据集.其次使用这些新的数据集训练不同的基学习器,并根据验证集上的精度得到不同基学习器的权重.将测试样本按照相同的粒度划分方式得到不同的测试数据集,使用不同的基分类器对这些测试数据集进行测试,得到对应的预测标签.最后对不同基分类器预测的标签进行加权,并选出权重最大的那个标签作为预测标签.在实际的电力负荷数据上将该模型与单个CNN模型进行对比,实验结果表明,该模型具有更高的设备识别精度.

     

    Abstract: The power load profile of the equipment varies with time, and it is essentially time series data. A new ensemble learning method for identifying electrical equipment through load power profile is proposed, which uses convolution neural network (CNN) as base learner to train the multi-granular load profile to improve the accuracy of classification. First, the raw data with different granularities are divided and some different new data sets are obtained. Then, these new data sets were used to train different base learners and get the weight of different base learners according to the accuracy of validation sets. In the testing process, testing data are divided based on different granularities in the same way as the training data are fed into base learners and the final results are obtained by weighting the output of each base learner. The proposed model are compared with a single CNN model on the electrical equipment load data. The experimental results show that the proposed method has higher accuracy in the identification of electrical equipment.

     

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