提升非侵入式负荷辨识准确度的改进型自编码器

非侵入式负荷辨识能够实现电器能耗监测、提高能源使用效率.针对电器混合能耗分解的任务,提出了一种包含改进型去噪自编码器的神经网络方法,用于分解低频采样的混合功率.该方法首先对不同电器分别训练一个卷积去噪自编码器神经网络,然后使用滑动窗口的方式将原始电表采样功率数据通过相应神经网络逐一进行局部分解,最后合成目标电器的干净时...

Accuracy improved denoising autoencoder for non-intrusive load monitoring

Non-intrusive load monitoring facilitates the monitoring of electric appliance energy usage and the improvement on energy efficiency. Focusing on the task of disaggregating mixed energy consumption, this paper proposes a method that involves improved denoising autoencoder neural network to disaggregate mixed power sampled at low frequency. This method firstly trains a convolutional denoising autoencoder network for every electric appliance. Subsequently, the sliding window method is employed to disaggregate the mixed power segments, which are later combined to form the clean complete disaggregated time series power data. The research shows that the experiment on the REDD dataset demonstrates at least 12% improvement on disaggregation accuracy compared with current methods; and this improvement in performance attributes to the structural change that adds convolutional layers, batch normalization and rectified linear unit, as well as the sample preprocessing that innovatively zeros out labels of samples containing incomplete active sections forcing the network to better exploit its limited capacity.