Multi-step ahead forecasting in electrical power system using a hybrid forecasting system

Pei Du, Jianzhou Wang, Wendong Yang and Tong Niu

Renewable Energy, 2018, vol. 122, issue C, 533-550

Abstract: Managers and researchers have put more emphasis on electrical power system forecasting to obtain effective management in electrical power system. However, enhancing prediction accuracy is not only a highly challenging task, but also a concerned problem in electrical power system. Traditional single algorithms usually ignore the significance of parameter optimization and data preprocessing, which always leads to poor results. Thus, in this paper a novel hybrid forecasting system was successfully developed, including four modules: data preprocessing module, optimization module, forecasting module and evaluation module. In this system, a signal processing approach is employed to decompose, reconstruct, identify and mine the primary characteristics of electrical power system time series in data preprocessing module. Moreover, to achieve high accuracy and overcome the drawbacks of single models, optimization algorithms are also employed to optimize the parameters of these individual models in the optimization and forecasting modules. Finally, evaluation module including hypothesis testing, evaluation criteria and case studies is introduced to make a comprehensive evaluation for this system. Experimental results showed that the hybrid system not only can be able to satisfactorily approximate the actual value, but also be regarded as an effective and simple tool adopted in smart grids.

Keywords: Electrical power system; Hybrid forecasting system; Least squares support vector machine; Model selection mechanism; Whale optimization algorithm (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (42)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:122:y:2018:i:c:p:533-550

DOI: 10.1016/j.renene.2018.01.113

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