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1.河海大学能源与电气学院,江苏省南京市 211100
2.国网江苏省电力有限公司南京供电分公司,江苏省南京市 210019
吴峰(1977—),男,通信作者,博士,教授,博士生导师,主要研究方向:可再生能源发电系统的建模与控制、电力系统动态等值、基于广域测量系统的电力系统分析与控制。E-mail:wufeng@hhu.edu.cn
王飞(1995—),男,硕士研究生,主要研究方向:波浪能发电系统输出功率预测。E-mail:1354252074@qq.com
顾康慧(1991—),男,博士,主要研究方向:可再生能源建模与并网分析。E-mail:gukanghui@sina.com
收稿日期:2019-11-24,
修回日期:2020-04-28,
网络出版日期:2020-05-29,
纸质出版日期:2021-01-10
移动端阅览
吴峰,王飞,顾康慧等.基于MEEMD-ARIMA模型的波浪能发电系统输出功率预测[J].电力系统自动化,2021,45(1):65-70.
WU Feng,WANG Fei,GU Kanghui,et al.Output Power Prediction of Wave Energy Generation System Based on Modified Ensemble Empirical Mode Decomposition-Autoregressive Integrated Moving Average Model[J].Automation of Electric Power Systems,2021,45(1):65-70.
吴峰,王飞,顾康慧等.基于MEEMD-ARIMA模型的波浪能发电系统输出功率预测[J].电力系统自动化,2021,45(1):65-70. DOI: 10.7500/AEPS20191124004.
WU Feng,WANG Fei,GU Kanghui,et al.Output Power Prediction of Wave Energy Generation System Based on Modified Ensemble Empirical Mode Decomposition-Autoregressive Integrated Moving Average Model[J].Automation of Electric Power Systems,2021,45(1):65-70. DOI: 10.7500/AEPS20191124004.
波浪能作为一种储量丰富的清洁能源,是未来理想的能源之一。但其具有较强的随机波动特性,因此,可靠地预测波浪能发电系统的输出功率能给复杂电网的调度带来极大的便利。文中提出基于改进的总体经验模态分解(MEEMD)-差分整合移动平均自回归(ARIMA)模型的波浪能组合预测。首先,基于海浪计算原理,计算混合浪的每小时平均波高与周期。其次,采用MEEMD对每小时平均波高与周期进行分解,得到一系列特征互异的本征模态函数(IMF)和余量,并将平均波高分解的结果与离散小波变换分解结果做对比。然后,将得到的分量分别建立ARIMA预测模型,通过叠加得到每小时平均波高与周期的预测值。最后,建立直驱式波浪能发电系统波高-功率转换模型,实例结果验证了该组合模型预测的有效性。
As a kind of abundant clean energy
wave energy is one of the ideal energy in the future
but it has strong stochastic fluctuation characteristics. Reliable prediction of output power for wave energy generation systems will bring great convenience to the scheduling of complex power grids. A combination prediction model of wave energy based on modified ensemble empirical mode decomposition (MEEMD)-autoregressive integrated moving average (ARIMA) model is proposed. Firstly
based on the wave calculation principle
the hourly average height and period of the mixed wave are calculated. Secondly
the MEEMD is used to decompose the hourly average wave height and period to obtain a series of intrinsic mode functions (IMFs) with different characteristics and margins. The results of the average wave height decompositions are compared with the decomposition results of discrete wavelet transformation. Then
the obtained components are used to establish ARIMA prediction models
and the predicted values of the hourly average wave height and period are obtained by superposition. Finally
the conversion model between wave height and power of direct-drive wave energy generation system is established
and the test results show the effectiveness of the combined model prediction.
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