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中国农业大学信息与电气工程学院,北京市 100083
Received:31 December 2020,
Revised:2021-05-17,
Published Online:27 September 2021,
Published:10 December 2021
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叶林,马明顺,靳晶新等.考虑风电-光伏功率相关性的因子分析-极限学习机聚合方法[J].电力系统自动化,2021,45(23):31-40.
YE Lin,MA Mingshun,JIN Jingxin,et al.Factor Analysis-Extreme Learning Machine Aggregation Method Considering Correlation of Wind Power and Photovoltaic Power[J].Automation of Electric Power Systems,2021,45(23):31-40.
叶林,马明顺,靳晶新等.考虑风电-光伏功率相关性的因子分析-极限学习机聚合方法[J].电力系统自动化,2021,45(23):31-40. DOI: 10.7500/AEPS20201231004.
YE Lin,MA Mingshun,JIN Jingxin,et al.Factor Analysis-Extreme Learning Machine Aggregation Method Considering Correlation of Wind Power and Photovoltaic Power[J].Automation of Electric Power Systems,2021,45(23):31-40. DOI: 10.7500/AEPS20201231004.
针对风电和光伏时序数据单独聚合改变风电-光伏序列相关性的问题,提出因子分析-极限学习机聚合方法。首先,将
z
-score标准化的风电-光伏原始日场景集分解为水平分量日场景集和波动分量日场景集。其次,对水平分量日场景集进行近邻传播聚类,得到
K
类场景簇,再通过分层抽样获取2
<math id="M1"><mi>n</mi></math>
http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=22408196&type=
http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=22408193&type=
1.86266661
2.79399991
天的水平分量日场景集。在标准化的风电-光伏原始日场景集中选取对应2
<math id="M2"><mi>n</mi></math>
http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=22408196&type=
http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=22408193&type=
1.86266661
2.79399991
天的原始日场景集,分别得到
<math id="M3"><mi>n</mi></math>
http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=22408196&type=
http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=22408193&type=
1.86266661
2.79399991
天的训练集和
<math id="M4"><mi>n</mi></math>
http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=22408196&type=
http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=22408193&type=
1.86266661
2.79399991
天的测试集。然后,通过极限学习机获取水平分量日场景集和原始日场景集之间的映射关系,输出拟合功率日场景集。最后,通过反标准化,分别得到
<math id="M5"><mi>n</mi></math>
http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=22408196&type=
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1.86266661
2.79399991
天的风电和光伏功率的聚合序列,并通过概率统计指标、相关系数、仿真计算结果验证所提方法的准确性和可行性。
Aiming at the problem that the separate aggregation of wind power and photovoltaic (PV) time series data changes the correlation between wind power and PV series
the factor analysis-extreme learning machine (ELM) aggregation method is proposed. Firstly
the
z
-score standardized wind power-PV original daily scene set is decomposed into horizontal components and fluctuating components of daily scene sets. Secondly
affinity propagation (AP) clustering is carried out for the horizontal components of daily scene sets to obtain
K
types of scene cluster. 2
n
-day horizontal components of daily scene sets are obtained through stratified sampling. The corresponding 2
n
-day original daily scene sets is selected from the standardized wind power-PV original daily scene sets
and
n
-day training set and
n
-day testing set are obtained respectively. Then
the mapping relationship between the horizontal components of daily scene sets and the original daily scene sets is obtained through the ELM
and the fitted power daily scene set is output. Finally
through the reverse standardization
the
n
-day wind power and PV power aggregation series are obtained
respectively. The accuracy and feasibility of the proposed method are verified by probability statistical indices
correlation coefficients and simulation results.
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