XIAO Bai,ZHOU Wenkai,JIANG Zhuo.Spatial Load Situation Awareness Based on Isolation Forest, Mode Decomposition and Neural Networks[J].Automation of Electric Power Systems,2022,46(18):190-198.
XIAO Bai,ZHOU Wenkai,JIANG Zhuo.Spatial Load Situation Awareness Based on Isolation Forest, Mode Decomposition and Neural Networks[J].Automation of Electric Power Systems,2022,46(18):190-198. DOI: 10.7500/AEPS20210918002.
Spatial Load Situation Awareness Based on Isolation Forest, Mode Decomposition and Neural Networks
Accurate spatial load situation awareness (SLSA) can provide a scientific guidance for the optimal planning of urban power grid. This paper proposes an SLSA method based on isolation forest
variational mode decomposition
multilayer perceptron and gated recurrent unit (iForest-VMD-MLP-GRU). In the stage of situation perception
the isolation forest algorithm is used to identify the outliers of the measured data of class Ⅰ cell load under the given spatial resolution in the power geographic information system
and the Lagrangian interpolation method is used to modify it
so as to determine the reasonable class Ⅰ cell load data. In the stage of situation comprehension
the perceived class Ⅰ cell load data is decomposed by the variational mode decomposition method to obtain the components of different central frequencies. The trend component and low-frequency component are determined according to their energy values. In the stage of situation forecasting
the multilayer perceptron and the gated recurrent unit are used to forecast the trend component and the low-frequency component respectively
and the forecasting results of the two components are inversed and reconstructed to obtain the situation awareness results of class Ⅰ cell loads in the target year. The grid technology is then used to transform the results of class Ⅰ cells into the results based on class Ⅱ cells. The results of example analysis prove that the proposed method is correct and effective.
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