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1.上海电力大学电气工程学院,上海市 200090
2.新南威尔士大学电气工程与通信学院,悉尼 2052,澳大利亚
苏向敬(1984—),男,博士,副教授,硕士生导师,主要研究方向:海上风电大数据技术、主动配电网优化规划运行。E-mail:xiangjing_su@126.com
周汶鑫(1997—),女,硕士研究生,主要研究方向:基于人工智能的海上风电出力预测技术。E-mail:zwx.1997.ok@163.com
李超杰(1985—),男,博士,高级研究员,主要研究方向:图表示学习、可解释时序预测、智慧能源系统。E-mail:chaojie.li@unsw.edu.au
符杨(1968—),男,通信作者,博士,教授,博士生导师,主要研究方向:风力发电与并网技术、变压器状态监测与故障诊断。E-mail:mfudong@126.com
收稿:2021-04-27,
修回:2021-10-08,
网络出版:2022-01-14,
纸质出版:2022-04-10
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苏向敬,周汶鑫,李超杰等.基于双重注意力LSTM神经网络的可解释海上风电出力预测[J].电力系统自动化,2022,46(7):141-151.
SU Xiangjing,ZHOU Wenxin,LI Chaojie,et al.Interpretable Offshore Wind Power Output Forecasting Based on Long Short-term Memory Neural Network with Dual-stage Attention[J].Automation of Electric Power Systems,2022,46(7):141-151.
苏向敬,周汶鑫,李超杰等.基于双重注意力LSTM神经网络的可解释海上风电出力预测[J].电力系统自动化,2022,46(7):141-151. DOI: 10.7500/AEPS20210427004.
SU Xiangjing,ZHOU Wenxin,LI Chaojie,et al.Interpretable Offshore Wind Power Output Forecasting Based on Long Short-term Memory Neural Network with Dual-stage Attention[J].Automation of Electric Power Systems,2022,46(7):141-151. DOI: 10.7500/AEPS20210427004.
海上风电面临复杂多变气象和海况条件的深度耦合影响,导致其出力预测精度有待提升。同时,预测模型的“黑盒”结构导致出力预测结果在工程应用中可信度偏低。针对上述问题,提出一种基于双重注意力长短期记忆(DALSTM)网络的超短期海上风电出力预测模型。在长短期记忆神经网络的基础上,引入特征空间和时序双重注意力机制,动态挖掘海上风电出力与输入特征间的潜在相关性,并从特征和时间2个方面获得重要性量度,在一定程度上实现了模型的可解释性。最后,基于中国东海大桥海上风电场数据采集与监控数据进行仿真验证。结果表明,所提DALSTM网络模型能够对海上风电出力进行有效的超短期预测,相比于传统预测模型具有更高的预测精度和稳定性,同时具有合理的可解释性。
Offshore wind power is faced with the deep coupling effect of complex and changeable meteorological and sea conditions
which leads to the accuracy of output forecasting to be improved. At the same time
the “black box” structure of the forecasting model leads to the low reliability of output forecasting results in the engineering applications. To address the above problems
an ultra-short-term offshore wind power output forecasting model is proposed based on long short-term memory (DALSTM) neural network with the dual-stage attention. Based on the long short-term memory neural network
the dual-stage attention mechanism of feature space and time series is introduced to dynamically explore the potential correlations between the offshore wind power output and the input features. The importance evaluation is carried out from feature and time to improve the interpretability of the proposed DALSTM model. Finally
simulations are conducted on the data supervisory control and data acquisition collected from the Donghai Bridge offshore wind farm of China. The results show that the proposed DALSTM model can effectively forecast the ultra-short-term offshore wind power output
and has higher forecasting accuracy and stability than the traditional forecasting models
as well as reasonable interpretability.
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