Assessment of Equipment Operation State with Improved Random Forest
Open Access
- 8 March 2021
- journal article
- research article
- Published by Hindawi Limited in International Journal of Rotating Machinery
- Vol. 2021, 1-10
- https://doi.org/10.1155/2021/8813443
Abstract
To accurately assess the state of a generator in wind turbines and find abnormalities in time, the method based on improved random forest (IRF) is proposed. The balancing strategy that is a combination of oversampling technique (SMOTE) and undersampling is applied for imbalanced data. Bootstrap is applied to resample original data sets of generator side from the supervisory control and data acquisition (SCADA) system, and decision trees are generated. After the decision trees with different classification capabilities are weighted, an IRF model is established. The accuracy and performance of the model are based on 10-fold cross-validation and confusion matrix. The 60 testing sets are assessed, and the accuracy is 95.67%. It is more than 1.67% higher than traditional classifiers. The probabilities of 60 data sets at each class are calculated, and the corresponding state class is determined. The results show that the proposed IRF has higher accuracy, and the state can be assessed effectively. The method has a good application prospect in the state assessment of wind power equipment.Keywords
Funding Information
- Department of Education of Liaoning Province (LQGD2020016, 51675350)
This publication has 16 references indexed in Scilit:
- Using SCADA data for wind turbine condition monitoring – a reviewIET Renewable Power Generation, 2016
- A probability evaluation method of early deterioration condition for the critical components of wind turbine generator systemsMechanical Systems and Signal Processing, 2016
- Identifying maximum imbalance in datasets for fault diagnosis of gearboxesJournal of Intelligent Manufacturing, 2015
- Normal Behavior Models for the Condition Assessment of Wind Turbine Generator SystemsElectric Power Components and Systems, 2014
- Fault Diagnosis on Transmission System of Wind Turbines Based on Wavelet Packet Transform and RBF Neural NetworksApplied Mechanics and Materials, 2013
- Wind turbine condition monitoring by the approach of SCADA data analysisRenewable Energy, 2013
- Online breakage detection of multitooth tools using classifier ensembles for imbalanced dataInternational Journal of Systems Science, 2013
- Avoiding neural network fine tuning by using ensemble learning: application to ball-end milling operationsThe International Journal of Advanced Manufacturing Technology, 2011
- Research and Application of Condition Monitoring and Fault Diagnosis Technology in Wind TurbinesJournal of Mechanical Engineering, 2011
- Random ForestsMachine Learning, 2001