Journal of Applied Science and Engineering

Published by Tamkang University Press

1.30

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2.10

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Zongyun Song This email address is being protected from spambots. You need JavaScript enabled to view it.1, Dongxiao Niu1, Xinli Xiao1 and Han Wu1

1School of Economic and Management, North China Electric Power University, Beijing 102206, P.R.China


 

Received: January 18, 2015
Accepted: January 21, 2016
Publication Date: September 1, 2016

Download Citation: ||https://doi.org/10.6180/jase.2016.19.3.02  

ABSTRACT


Safe and economicoperation of power systemis based on load forecasting, and how to increase forecasting accuracy is the premise of power dispatching and economic analysis. Present paper establishes SVM (support vector machine) forecasting model based on fast K-medoids clustering algorithm and data accumulative pre-processing. FKM (fast K-medoids clustering algorithm) is applied to extract similar days by dividing all samples into k clusters, and respective forecasting of k clusters can realize the forecasting of a whole object. Before inputting the data into SVM system, the original data is preprocessed by accumulation to weaken the irregularity disturbance and strengthen sequence regularity. Due to existing unexplained component in forecasting error, GARCH (generalized autoregressive conditional heteroskedasticity) model is employed to forecast the error with non-white noise. According to its results, error correction is applied to the forecasted daily peak load. The forecasting effect of the proposed model is compared with other models in the given example, which verifies that SVM model based on fast K-medoids clustering algorithm and GARCH model has the characteristic of effectiveness, superiority and universality. The accuracy of daily peak load forecasting is enhanced significantly.


Keywords: Daily Peak Load Forecasting, FKM, SVM, GARCH, Error Correction


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