Distributed photovoltaic power prediction is of great significance for the operation and scheduling of photovoltaic power plants. Point prediction methods are difficult to comprehensively describe the uncertainty of distributed photovoltaic power. This article proposed a distributed photovoltaic power interval prediction model based on complete ensemble empirical mode decomposition with adaptive noise (CEEMDAN) and sparrow search algorithm optimized least squares support vector machine (SSA-LSSVM).
Methods
2
Firstly
the photovoltaic sequence was broken down into multimodal components through CEEMDAN
and then the high-frequency non-stationary components obtained from the first decomposition were decomposed twice. Secondly
sample entropy (SE) was used to reconstruct all components into trend and oscillation components. Then
the point prediction values of the two components were obtained through SSA-LSSVM. Finally
the probability density estimation was performed on the point prediction error of the oscillation component
and the stacked point prediction value was used to obtain the overall prediction interval result.
Results
2
The interval prediction model proposed in this paper has higher interval coverage and narrower average interval width.
Conclusions
2
Adding secondary modal decomposition to distributed photovoltaic power data processing and combining sample entropy to reconstruct its sub-sequences can effectively reduce the complexity of the original prediction components and improve the accuracy of model prediction.
ZHANG T H , XIE M C , WANG B B , et al . System dynamics simulation of shared value of distributed photovoltaic and its impact on distribution network [J ] . Automation of Electric Power Systems , 2021 , 45 ( 18 ): 35 - 44 .
LAI C W , LI J H , CHEN B , et al . Review of photovoltaic power output prediction technology [J ] . Transactions of China Electrotechnical Society , 2019 , 34 ( 6 ): 1201 - 1217 .
LI B T , LI M R , LIU M Q . PV power generation forecast model based on path analysis and phase space reconstruction [J ] . Electrical Measurement & Instrumentation , 2022 , 59 ( 11 ): 79 - 87 .
SHANG L Q , LI H B , HOU Y D , et al . Short-term photovoltaic power generation prediction based on VMD-ISSA-KELM [J ] . Power System Protection and Control , 2022 , 50 ( 21 ): 138 - 148 .
LI Y , LÜ N J , LIU X T , et al . Output evaluation method of distributed photovoltaic cluster considering renewable energy accommodation and power loss of network [J ] . Electric Power Construction , 2022 , 43 ( 10 ): 136 - 146 .
LÜ Q Q , ZHANG Z Z , MA Y H , et al . Analysis and research on output characteristics of regional photovoltaic power generation [J ] . Power Generation Technology , 2022 , 43 ( 3 ): 413 - 420 . doi: 10.12096/j.2096-4528.pgt.21060 http://dx.doi.org/10.12096/j.2096-4528.pgt.21060
YE C , LIU D , CAO K . An ultra-short-term photovoltaic power forecasting model based on cloud features [J ] . Power System and Clean Energy , 2023 , 39 ( 10 ): 70 - 79 .
ZHANG J Y , PU T J , LI Y , et al . Multi-agent deep reinforcement learning based optimal dispatch of distributed generators [J ] . Power System Technology , 2022 , 46 ( 9 ): 3496 - 3503 .
ZHANG X S , LI P , ZHOU Y Y , et al . Photovoltaic output combination forecasting method based on Bayesian probability [J ] . Acta Energiae Solaris Sinica , 2021 , 42 ( 10 ): 80 - 86 .
WANG Y , WANG T , YUE Y Y , et al . Flexible resource collaborative planning to enhance the capacity of distributed photovoltaic [J ] . Power System and Clean Energy , 2023 , 39 ( 8 ): 116 - 126 .
YE L , CHENG W D , LI Z , et al . Hierarchical prediction control strategy of active power for photovoltaic cluster [J ] . Automation of Electric Power Systems , 2023 , 47 ( 2 ): 42 - 52 .
WANG B , LÜ Y , CHEN Z , et al . Hybrid mechanism-data-driven short-term power forecasting of distributed photovoltaic considering information time shift [J ] . Automation of Electric Power Systems , 2022 , 46 ( 11 ): 67 - 74 .
LI F J , WANG L , ZHAO J , et al . Research on distributed photovoltaic short-term power prediction method based on weather fusion and LSTM-net [J ] . Electric Power , 2022 , 55 ( 11 ): 149 - 154 .
QING H , LI W , LIU W J , et al . Research on short-term photovoltaic power forecasting technology based on ESMD-SVM [J ] . Journal of Engineering for Thermal Energy and Power , 2022 , 37 ( 10 ): 189 - 197 .
DING M , YU H B , LIU L , et al . Power prediction method of photovoltaic generation based on multivariable phase space reconstruction and RBF neural network [J ] . Journal of Electronic Measurement and Instrumentation , 2020 , 34 ( 8 ): 1 - 7 .
XIANG L , LIU J N , SU H , et al . Research on multi-step wind speed forecast based on ceemdan secondary decomposition and LSTM [J ] . Acta Energiae Solaris Sinica , 2022 , 43 ( 8 ): 334 - 339 .
WEI Q , TANG Z J . Wind power range prediction based on SSA-VMD-SE-KELM combined with Monte Carlo method [J ] . Smart Power , 2022 , 50 ( 9 ): 59 - 66 .
YANG G Q , LI J J , WANG D Y , et al . Short-term photovoltaic power interval prediction based on information entropy variable weight interval combination and boundary approximation [J ] . Acta Energiae Solaris Sinica , 2023 , 44 ( 2 ): 381 - 390 .
XIAO B , ZHANG B , WANG X W , et al . Short-term wind power interval prediction based on combined mode decomposition and deep learning [J ] . Automation of Electric Power Systems , 2023 , 47 ( 17 ): 110 - 117 .
YANG H Z , SHI J , JIANG Z Y , et al . Short term power load prediction model based on CEEMD-SSA-LSSVM [J ] . Journal of Wuhan University (Engineering Edition) , 2022 , 55 ( 6 ): 609 - 616 .
WANG P X , SHEN J , WANG J Y , et al . Short term photovoltaic power prediction based on PCA-LMD-WOA-ELM [J ] . Smart Power , 2022 , 50 ( 6 ): 72 - 78 . doi: 10.3969/j.issn.1673-7598.2022.06.012 http://dx.doi.org/10.3969/j.issn.1673-7598.2022.06.012
ZHAO C , WANG B , SUN Z X , et al . Optimal configuration optimization of islanded microgrid using improved grey wolf optimizer algorithm [J ] . Acta Energiae Solaris Sinica , 2022 , 43 ( 1 ): 256 - 262 .