Keke Wang
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Previous Organizations / Institutes
The organizations / institutes from the scholar's other articles in the past ten years
Keke Wang has a total of 36 co-authors. Here are the top co-authors by number of shared publications:
Dongxiao Niu
7 shared publications- Xiaomin Xu
School of Economics and Management, North China Electric Power University, Beijing 102206, China
6 shared publications Lijie Sun
5 shared publications- Hao Zhen
School of Economics and Management, North China Electric Power University, Beijing 102206, China
4 shared publications - Lijie Sun
School of Economics and Management, North China Electric Power University, Beijing 102206, China
4 shared publications Min Yu
4 shared publications
Latest Publications
- 8 December 2023
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- Vol. 38, 327-331
Day-Ahead Electricity Market Transaction Optimization Considering Wind Power and Medium and Long-Term Contract Decomposition
As China is gradually building a clean, low-carbon, safe and efficient energy system with renewable energy (RE) as the leading force, and accelerating the realization of the “ $30\cdot 60$ “ dual carbon goal. To give further play to the key role of the market in optimal resources, this paper proposes an optimization model of day-ahead electricity market-clearing optimization model considering medium and long-term contract electricity decomposition (MLCED) and RE. The MLCED result is introduced into the clearing model of day-ahead market as a constraint to ensure the fairness of bidding units dispatching and reduce risk. The paper analyzes the system uncertainty and adds wind power penetration into the spot electricity price simulation as an influencing factor. The fuzzy optimization method is used to convert multi-objective to balance the interests of different priorities, and a particle swarm optimization (PSO) algorithm based on genetic algorithm (GA) optimization is designed to expand the search ability. Finally, based on a specific example, the model and results are analyzed to verify the feasibility of the multi-objective clearing optimization model of medium and long-term electricity market (MLEM) and day-ahead market connection considering wind power participation.- 8 December 2023
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- Vol. 38, 327-331
Day-Ahead Electricity Market Transaction Optimization Considering Wind Power and Medium and Long-Term Contract Decomposition
As China is gradually building a clean, low-carbon, safe and efficient energy system with renewable energy (RE) as the leading force, and accelerating the realization of the “ $30\cdot 60$ “ dual carbon goal. To give further play to the key role of the market in optimal resources, this paper proposes an optimization model of day-ahead electricity market-clearing optimization model considering medium and long-term contract electricity decomposition (MLCED) and RE. The MLCED result is introduced into the clearing model of day-ahead market as a constraint to ensure the fairness of bidding units dispatching and reduce risk. The paper analyzes the system uncertainty and adds wind power penetration into the spot electricity price simulation as an influencing factor. The fuzzy optimization method is used to convert multi-objective to balance the interests of different priorities, and a particle swarm optimization (PSO) algorithm based on genetic algorithm (GA) optimization is designed to expand the search ability. Finally, based on a specific example, the model and results are analyzed to verify the feasibility of the multi-objective clearing optimization model of medium and long-term electricity market (MLEM) and day-ahead market connection considering wind power participation.- Top Cited Papers
A novel framework for ultra-short-term interval wind power prediction based on RF-WOA-VMD and BiGRU optimized by the attention mechanism
- Open Access
- 28 July 2022
- Published by MDPI AG in Sustainability
- Vol. 14 (15) , 9257
Correction: Niu et al. Prioritization of Renewable Energy Alternatives for China by Using a Hybrid FMCDM Methodology with Uncertain Information. Sustainability 2020, 12, 4649
The authors would like to make the following corrections to the published paper
- 28 July 2022
- Published by MDPI AG in Sustainability
- Vol. 14 (15) , 9257
Open AccessCorrection: Niu et al. Prioritization of Renewable Energy Alternatives for China by Using a Hybrid FMCDM Methodology with Uncertain Information. Sustainability 2020, 12, 4649
The authors would like to make the following corrections to the published paper
- Open Access
- 1 January 2022
- Published by Elsevier in SSRN Electronic Journal
A Novel Framework for Ultra-Short Term Wind Power Prediction Based on Rf-Woa-Vmd and Bigru Optimized by Attention Mechanism
:With resource shortage and global warming becoming increasingly serious, it is urgent to accelerate the green and low-carbon energy transition. Wind power as a kind of green, low carbon, zero cost renewable energy has been rapidly developed. Aiming at the problem of strong randomness and strong temporal correlation in wind power prediction (WPP). a new framework for WPP based on RF-WOA-VMD and BiGRU optimized by attention mechanism is proposed. Firstly, the random forest algorithm (RF) is adopted to screen the influencing factors of wind power, effectively reducing the data redundancy and improving the prediction efficiency. Secondly, the variational modal decomposition (VMD) algorithm optimized by Whale Algorithm (WOA) for WPP is adopted. which uses WOA to adaptively determine the optimal parameters [K, ] in VMD, adaptively decompose raw wind power series and reduces data noise. Furthermore, BiGRU algorithm optimized by attention mechanism is proposed for WPP. The Attention mechanism is introduced to assign different weights to the hidden states of BiGRU to emphasize the impact of key information. Eventually, five comparison models are constructed to verify the effectiveness of proposed approach. The results illustrate that proposed model further enhances the prediction accuracy, and the MAPE is reduced by 86.81%.
- 1 January 2022
- Published by Elsevier in SSRN Electronic Journal
Open AccessA Novel Framework for Ultra-Short Term Wind Power Prediction Based on Rf-Woa-Vmd and Bigru Optimized by Attention Mechanism
:With resource shortage and global warming becoming increasingly serious, it is urgent to accelerate the green and low-carbon energy transition. Wind power as a kind of green, low carbon, zero cost renewable energy has been rapidly developed. Aiming at the problem of strong randomness and strong temporal correlation in wind power prediction (WPP). a new framework for WPP based on RF-WOA-VMD and BiGRU optimized by attention mechanism is proposed. Firstly, the random forest algorithm (RF) is adopted to screen the influencing factors of wind power, effectively reducing the data redundancy and improving the prediction efficiency. Secondly, the variational modal decomposition (VMD) algorithm optimized by Whale Algorithm (WOA) for WPP is adopted. which uses WOA to adaptively determine the optimal parameters [K, ] in VMD, adaptively decompose raw wind power series and reduces data noise. Furthermore, BiGRU algorithm optimized by attention mechanism is proposed for WPP. The Attention mechanism is introduced to assign different weights to the hidden states of BiGRU to emphasize the impact of key information. Eventually, five comparison models are constructed to verify the effectiveness of proposed approach. The results illustrate that proposed model further enhances the prediction accuracy, and the MAPE is reduced by 86.81%.
- 1 November 2021
- Published by Elsevier in Journal of Cleaner Production
- Vol. 325
A bi-level optimization model for electric vehicle charging strategy based on regional grid load following
- 1 November 2021
- Published by Elsevier in Journal of Cleaner Production
- Vol. 325
A bi-level optimization model for electric vehicle charging strategy based on regional grid load following
- Open Access
- 10 May 2021
- Published by Wiley in Energy Science & Engineering
- Vol. 9 (9) , 1465-1476
Participation of electric vehicles in auxiliary service market to promote renewable energy power consumption: Case study on deep peak load regulation of auxiliary thermal power by electric vehicles
- 10 May 2021
- Published by Wiley in Energy Science & Engineering
- Vol. 9 (9) , 1465-1476
Open AccessParticipation of electric vehicles in auxiliary service market to promote renewable energy power consumption: Case study on deep peak load regulation of auxiliary thermal power by electric vehicles
- Open Access
- 13 January 2021
- Published by MDPI AG in Sustainability
- Vol. 13 (2) , 708
Analysis and Countermeasures of China’s Green Electric Power Development
The green development of electric power is a key measure to alleviate the shortage of energy supply, adjust the energy structure, reduce environmental pollution and improve energy efficiency. Firstly, the situation and challenges of China’s power green development is analyzed. On this basis, the power green development models are categorized into two typical research objects, which are multi-energy synergy mode, represented by integrated energy systems, and multi-energy combination mode with clean energy participation. The key points of the green power development model with the consumption of new energy as the core are reviewed, and then China’s exploration of the power green development system and the latest research results are reviewed. Finally, the key scientific issues facing China’s power green development are summarized and put forward targeted countermeasures and suggestions.
- 13 January 2021
- Published by MDPI AG in Sustainability
- Vol. 13 (2) , 708
Open AccessAnalysis and Countermeasures of China’s Green Electric Power Development
The green development of electric power is a key measure to alleviate the shortage of energy supply, adjust the energy structure, reduce environmental pollution and improve energy efficiency. Firstly, the situation and challenges of China’s power green development is analyzed. On this basis, the power green development models are categorized into two typical research objects, which are multi-energy synergy mode, represented by integrated energy systems, and multi-energy combination mode with clean energy participation. The key points of the green power development model with the consumption of new energy as the core are reviewed, and then China’s exploration of the power green development system and the latest research results are reviewed. Finally, the key scientific issues facing China’s power green development are summarized and put forward targeted countermeasures and suggestions.
- Open Access
- 15 November 2020
- Published by MDPI AG in Sustainability
- Vol. 12 (22) , 9490
A Hybrid Deep Learning Model and Comparison for Wind Power Forecasting Considering Temporal-Spatial Feature Extraction
The inherent intermittency and uncertainty of wind power have brought challenges in accurate wind power output forecasting, which also cause tricky problems in the integration of wind power to the grid. In this paper, a hybrid deep learning model bidirectional long short term memory-convolutional neural network (BiLSTM-CNN) is proposed for short-term wind power forecasting. First, the grey correlation analysis is utilized to select the inputs for forecasting model; Then, the proposed hybrid model extracts multi-dimension features of inputs to predict the wind power from the temporal-spatial perspective, where the Bi-LSTM model is utilized to mine the bidirectional temporal characteristics while the convolution and pooling operations of CNN are utilized to extract the spatial characteristics from multiple input time series. Lastly, a case study is conducted to verify the superiority of the proposed model. Other deep learning models (Bi-LSTM, LSTM, CNN, LSTM-CNN, CNN-BiLSTM, CNN-LSTM) are also simulated to conduct comparison from three aspects. The results show that the BiLSTM-CNN model has the best accuracy with the lowest RMSE of 2.5492, MSE of 6.4984, MAE of 1.7344 and highest R2 of 0.9929. CNN has the fastest speed with an average computational time of 0.0741s. The hybrid model that mines the spatial feature based on the extracted temporal feature has a better performance than the model mines the temporal feature based on the extracted spatial feature.
- 15 November 2020
- Published by MDPI AG in Sustainability
- Vol. 12 (22) , 9490
Open AccessA Hybrid Deep Learning Model and Comparison for Wind Power Forecasting Considering Temporal-Spatial Feature Extraction
The inherent intermittency and uncertainty of wind power have brought challenges in accurate wind power output forecasting, which also cause tricky problems in the integration of wind power to the grid. In this paper, a hybrid deep learning model bidirectional long short term memory-convolutional neural network (BiLSTM-CNN) is proposed for short-term wind power forecasting. First, the grey correlation analysis is utilized to select the inputs for forecasting model; Then, the proposed hybrid model extracts multi-dimension features of inputs to predict the wind power from the temporal-spatial perspective, where the Bi-LSTM model is utilized to mine the bidirectional temporal characteristics while the convolution and pooling operations of CNN are utilized to extract the spatial characteristics from multiple input time series. Lastly, a case study is conducted to verify the superiority of the proposed model. Other deep learning models (Bi-LSTM, LSTM, CNN, LSTM-CNN, CNN-BiLSTM, CNN-LSTM) are also simulated to conduct comparison from three aspects. The results show that the BiLSTM-CNN model has the best accuracy with the lowest RMSE of 2.5492, MSE of 6.4984, MAE of 1.7344 and highest R2 of 0.9929. CNN has the fastest speed with an average computational time of 0.0741s. The hybrid model that mines the spatial feature based on the extracted temporal feature has a better performance than the model mines the temporal feature based on the extracted spatial feature.