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IEEE Transactions on Industrial Cyber-Physical Systems 2025年 3卷 116-126页

作者： Xiao, Feng Liu, Shiyu Wei, Bo Fang, Fang Qin, Jiahu North China Electric Power University State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources Beijing102206 China North China Electric Power University School of Control and Computer Engineering Beijing102206 China North China Electric Power University New Energy Generation National Engineering Research Center Beijing102206 China University of Science and Technology of China Department of Automation Hefei230027 China

The two control objectives of voltage regulation and precise current sharing are conflicting in multi-bus DC microgrids. In this paper, a distributed control strategy is proposed, and it can achieve accurate current sharing and regulate the voltage of a critical node to the rated value. However, such a distributed control system is susceptible to potential cyber attacks that could deteriorate microgrids performances by corrupting communication links or actuators. To overcome these difficulties, we design the interconnected communication networks to establish a resilient cooperative system of multiple microgrids against unknown bounded injection attacks. The proposed resilient control strategy can achieve the control objectives of maintaining voltage regulation and current sharing within each microgrids under different operating conditions, and the interconnected system consisting of multiple microgrids cooperates to mitigate the adverse effect of cyber attacks. The dynamics and stability of the overall close-loop system of the DC microgrids are analyzed, in the present or absent of cyber attacks. Simulation results validate the effectiveness of the proposed approach in two 4-bus DC microgrids. © 2023 IEEE.

关键词： Cyber attacks

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Flame region segmentation of a coal-fired power plant boiler burner through YOLOv8-MAH model

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Fuel 2025年 398卷

作者： Pu, Sixu Li, Jian Han, Zhezhe Zhu, Xiaoyu Xu, Chuanlong National Engineering Research Center of Power Generation Control and Safety School of Energy and Environment Southeast University Nanjing China School of Communication and Artificial Intelligence Nanjing Institute of Technology Nanjing China

Effective segmentation of flame regions in coal-fired power plant boiler burners is critical for enhancing combustion monitoring and operational safety. Traditional methods often suffers from the interference of complicated furnace environments, such as furnace background, adjacent burners and fly ash. This study introduces an advanced flame segmentation approach utilizing the YOLOv8 framework, improved by a multi-level augment head (MAH) and single-object tracking techniques to integrate shallow and deep feature information. Moreover, a convolutional block attention module (CBAM) is embedded in the backbone network to refine feature extraction, while the reparameterization and cross-stage feature reuse are applied in the neck network to bolster multi-scale feature fusion. Experimental results demonstrate that the improved model achieves a mean intersection over union (mIoU) of 82.6—an 8.8 increase over the original YOLOv8—while maintaining high computational efficiency with an inference time of 4.43 ms. Compared with other semantic segmentation models, the proposed model achieves superior accuracy and inference speed. Its performance is validated on a 660 MW opposed-fired boiler, where it can mitigate external disturbances and effectively segment the flame regions under varying load conditions. This method provides a reliable foundation for image-based flame detection systems, enabling real-time and precise monitoring of combustion conditions. © 2025 Elsevier Ltd

关键词： Semantic Segmentation

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Coordinated and Optimized Scheduling of Integrated Energy System Based on Improved Beluga Algorithm 9th

Coordinated and Optimized Scheduling of Integrated Energy Sy...

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9th Purple Mountain Form on Smart Grid Protection and control, PMF 2024

作者： Zhang, Zhuanqin Wang, Hui Xiao, Jieping Zhou, Weichao Zhao, Zijun Guan, Baojin School of Electrical Engineering and Information Technology Changchun Institute of Technology Changchun130012 China National Local Joint Engineering Research Center for Smart Distribution Grid Measurement and Control with Safety Operation Technology Changchun130012 China State Grid Jilin Electric Power Co. Ltd. Yanbian Power Supply Company Yanbian133000 China Jilin Institute of Chemical Technology Jilin132022 China

ISBN: (纸本)9789819616701

In order to solve the problems of low energy utilization, high carbon emission and poor economic benefit of integrated energy system, this paper proposes an improved beluga algorithm to realize coordinated and optimal dispatching of integrated energy system. Firstly, the operation framework of the integrated energy system is built, and the two-stage electricity-to-gas model and carbon trading mechanism model were constructed. Secondly, the improved Moby Dick algorithm is used to optimize the comprehensive energy system. Finally, the matlab2021a+gurobi solution environment is used to verify the solution. The results show that the proposed algorithm can effectively improve the energy utilization rate of the system, while ensuring the low carbon and economy of the integrated energy system. © State Grid Electric power 2025.

关键词： Low emission

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Multifunctional Butylammonium Acetate Additive Regulates FAPbI3 Film Growth and Defect Passivation for Highly Efficient and Stable Perovskite Solar Cells with 26.12% Efficiency

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Advanced Functional Materials 2025年

作者： Zhang, Qi Zhao, Chenxu Xu, Jia Shen, Fan Wang, Yijun Ji, Bozhang Guan, Xingjie Ma, Shuduo Wu, Yahan Li, Zhixue Yao, Jianxi New Energy Generation National Engineering Research Center North China Electric Power University Beijing102206 China Beijing Key Laboratory of Energy Safety and Clean Utilization North China Electric Power University Beijing102206 China LausanneCH1015 Switzerland College of Energy and Power Engineering Inner Mongolia University of Technology Hohhot010051 China Huadian Heavy Industries Co. Ltd. Beijing100017 China

FAPbI₃ perovskite solar cells (PSCs) exhibit significant potential for high-efficiency photovoltaic applications due to their broad light absorption range and exceptional photovoltaic performance. However, their practical implementation faces several challenges, such as the formation of non-photoactive δ-FAPbI₃ phases, the poor thermodynamic stability of the α-FAPbI₃ phase, and intrinsic defects within the films. To address these issues, a multifunctional additive strategy utilizing butylamine acetate (BAAc) was developed to modulate crystallization kinetics and reduce defects in FAPbI₃ perovskites. The ─NH₃⁺ and ─C═O functional groups in BAAc enable bidentate coordination with I⁻ and Pb2⁺ ions, which not only promote the formation of pre-nucleation clusters and accelerate the crystallization of the α-phase FAPbI₃ but also passivate intrinsic defects in the FAPbI₃ film. Moreover, BAAc effectively inhibits the formation of the 6H hexagonal intermediate phase, facilitating the preferential crystallization of the photoactive α-phase FAPbI₃. Additionally, BAAc introduces beneficial compressive strain within the perovskite lattice, thereby enhancing its structural stability. As a result, PSCs incorporating BAAc achieve a power conversion efficiency (PCE) of 26.12% and maintain 90% of their initial PCE after 1000 h of continuous operation under ambient conditions without encapsulation. © 2025 Wiley-VCH GmbH.

关键词： crystallization regulation defect passivation high efficiency α-FAPbI₃

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Techno-economic evaluation on a new integration of air-cooled coal-fired power plant and dual-pressure organic Rankine cycle for cold-side waste heat recovery

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Energy 2025年 327卷

作者： Hao, Ruijun Hao, Yongsheng Zhang, Junli Zhang, Hongsheng National Engineering Research Center of Power Generation Control and Safety School of Energy and Environment Southeast University Nanjing210096 China College of Mechanical and Electrical Engineering Beijing University of Chemical Technology Beijing100029 China

To boost coal-fired plants energy efficiency for load-regulation demands. an integration scheme (CPG-DPORC) is proposed wherein multiple extraction steams of different grades from the air-cooled coal-fired power generation system (CPG) drive the dual-pressure organic Rankine cycle (DPORC) step-by-step in a relay way. This scheme combines the high thermo-power conversion of the organic Rankine cycle for low- and medium-grade heat sources and the steam Rankine cycle for high-grade ones. It also flexibly matches CPG and DPORC heat sources, enabling deeper steam energy segmentation. Through such modifications, this approach achieves multiple goals: enhancing power output, recovering exhaust heat, and preventing air-cooling system freezing. A techno-economic evaluation of a 600 MW CPG system showed the retrofit significantly increased output power. Notably, the CPG-DPORC system shows directionally opposite performance advantages over the integrated simple organic Rankine cycle system (CPG-SORC). When the heat distribution ratio reaches 1 at 100 % THA, compared to the original CPG system and CPG-SORC system, the CPG-DPORC system, improves energy efficiency by 0.89 % and 0.17 %, improves exergy efficiency by 0.87 % and 0.17 %, and reduces the standard coal consumption rate by 6.59g/kWh and 1.23g/kWh. Economic evaluations further demonstrate that the initial total investment cost increases by 13.34 × 106USD and 0.57 × 106USD, the levelized cost of electricity (LCOE) reduces by 0.90 USD/MWh and 0.24 USD/MWh and the dynamic payback period (DPP) is shortened by 0.36 years and 0.10 years. Environmental evaluations show that the CO2 emission decrement increases by 66,841.84 tons/year and 12,739.54 tons/year. This integration promotes the shift to a renewable-dominated energy structure. © 2025 Elsevier Ltd

关键词： Waste heat utilization

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An Optimal Multivariable ADRC controller Design for Solar-Driven Carbon Compression Waste Heat Utilization System 4

An Optimal Multivariable ADRC Controller Design for Solar-Dr...

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4th International Conference on Electrical engineering and control Technologies, CEECT 2022

作者： Qin, Kexin Pan, Lei Lu, Nianci Wu, Xiao Southeast University National Engineering Research Center of Power Generation Control and Safety Nanking China

ISBN: (纸本)9781665498999

CO2 compression is one of the most important processes of the carbon capture and storage technology, which consumes a lot of cooling water and electricity, and emits a large amount of low-temperature waste heat into the environment. The consumption of energy and cooling water of CO2 compression process are the key reason for the high operating and construction costs of carbon capture and storage systems. Aiming at reducing the cost, this paper proposes a solar-driven organic rankine cycle system coupled with carbon compression cooling process for low-temperature waste heat utilization, called the ORC-CCC. It can effectively reduce the amount of cooling water and compensate for the energy consumption of the CO2 compression process. On the other hand, the cascaded and coupled energy utilization measures cause complex multivariable coupling and strong nonlinearity in the ORC-CCC dynamics and thus it is difficult to control it well. Therefore, based on the mathematical analysis on variable coupling characteristics of the ORC-CCC dynamic simulation system which we have built, a novel multivariable active disturbance rejection controller with a feedforward compensator (MADRC-FF) according to the coupling characteristics is proposed, and genetic algorithms is used to optimize the controller parameters. Since the MADRC- FF is more complex in structure compared with the traditional decentralized active disturbance rejection control, this paper theoretically proves its stability, feasibility and decoupling ability. The simulation verified its validity and better performance in multivariable control. © 2022 IEEE.

关键词： Genetic algorithms

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Modeling on Parabolic Trough Solar Thermal power Collection System with Solid-filling Heat Storage System 4

Modeling on Parabolic Trough Solar Thermal Power Collection ...

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4th International Conference on Electrical engineering and control Technologies, CEECT 2022

作者： Xu, Mengyao Liu, Yang Mao, Juecen Pan, Lei Southeast University National Engineering Research Center of Power Generation Control and Safety Nanking China

ISBN: (纸本)9781665498999

As an important way of utilizing solar energy, concentrating solar power technology has received extensive attention, while thermal storage system can remedy the randomness and intermittency of the concentrating solar power generation system. Hence, there is the significance to model and simulate the trough solar collection system and heat storage system. First, the dynamic models of the solar system, the mirror field heat collection system and the pipe heat transferring system are built using the mechanism modeling method. The effects of different flow rate and light intensity on system parameters like pipe wall temperature and fluid temperature are analyzed and compared. The verification result shows that the model can effectively reflect the practical dynamic characteristics of the heat collection system. Second, a one-dimensional model of the single-tank heat storage system with solid filling materials is established according to the energy and mass conservation laws, and compared with the zero dimensional model. The effects of porosity, filling materials and other key factors on the single-tank thermocline are analyzed and compared, showing that the model can predict the temperature change, thermal stratification and other properties of the thermocline with sufficient accuracy. The model provides a theoretical basis for the optimal design of concentrating solar power generation system. © 2022 IEEE.

关键词： Solar power generation

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Optimal Configuration of Integrated Energy System Considering Storage Temperature Characteristics 4

Optimal Configuration of Integrated Energy System Considerin...

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4th International Conference on Electrical engineering and control Technologies, CEECT 2022

作者： Wei, Huashuai Zhang, Junli Li, Yiguo Southeast University National Engineering Research Center of Power Generation Control and Safety Nanjing China

ISBN: (纸本)9781665498999

Integrated energy system is an energy technology that can utilize energy in multiple stages and realize multiple energy inputs and multiple energy outputs. The characteristics of the pipe network and the heat storage tank have an important impact on the overall performance of the integrated energy system. This paper takes hospital energy consumption as the object, sets economic goals, and uses flow and temperature changes to describe the energy flow characteristics of pipe network, heat storage tank and absorption chiller. And considering the temperature change limit, construct a comprehensive energy system configuration optimization model. By simulating a numerical example, the economics of the integrated energy system, the law of water supply and temperature change of the heat storage tank are studied. The results show that the annual cost of the integrated energy system is reduced by about 27.7% compared with the conventional energy system, and the response and temperature changes of the heat storage tank are in line with reality. © 2022 IEEE.

关键词： Water temperature

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Hybrid dimension-based analysis of the energy, exergy, and dynamic response of cross-flow SOFC-CHP system

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Applied Thermal engineering 2025年 274卷

作者： Xia, Lei Madonski, Rafal Sun, Li National Engineering Research Center of Power Generation Control and Safety School of Energy and Environment Southeast University Nanjing210096 China Faculty of Automatic Control Electronics and Computer Science Silesian University of Technology ul. Akademicka 16 Gliwice44-100 Poland

Some of the solid oxide fuel cell (SOFC) poly-generation systems currently have the problem of high exergy destruction of the air-side heat exchangers, which exceeds that of SOFC. Meanwhile, there are fewer studies on the variable distribution of key components, especially the dynamic distribution characteristics. In this study, a combined heat and power (CHP) system integrating a cross-flow SOFC, an organic Rankine cycle (ORC), and a heating unit is proposed, and distributed parameter modeling is applied to develop a dynamic mechanism model for a two-dimensional cross-flow SOFC and a one-dimensional methane reformer. Then the steady state performance and dynamic response characteristics of the system and key components are comprehensively analyzed. The results show that the total exergy destruction of the air-side heat exchangers is always lower than that of the SOFC under each operating condition. The maximum temperature and current density of SOFC are located at nodes (8,8) and (5,8), respectively. With the increase in fuel utilization (FU), the total system efficiency increases and then decreases, peaking at 83.36 %. Increases in SOFC internal reforming rate and the decrease in inlet gas temperature exacerbate the SOFC temperature distribution non-uniformity. A step change in current causes rapid fluctuations in system performance and in the internal variables of the SOFC. A step change in air flow first changes the cathode oxygen concentration, causing voltage changes. The current density variation trends at each node of the SOFC are different depending on the reactant concentration and temperature. © 2025

关键词： Cross-flow Distributed parameter modeling Dynamic responses Exergy analysis Solid oxide fuel cell

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Configuration strategy of integrated energy system considering economic and dynamic characteristics

Configuration strategy of integrated energy system consideri...

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2022 Chinese Automation Congress, CAC 2022

作者： Liu, Chang Li, Yiguo Zhang, Junli Southeast University School of Energy and Environment National Engineering Research Center of Power Generation Control and Safety Nanjing China

ISBN: (纸本)9781665465335

The integrated energy system (IES) coupled with different equipment has attracted widespread interest owing to its high efficiency. However, the dynamic characteristics are rarely considered in configuration, which may leave little optimization room for dispatch. Hence this paper proposes a dynamic performance index to take the dynamic characteristics into full consideration. Firstly, the static model and dynamic model of each device are formulated, and PI controllers are implemented. Secondly, the mathematical description of the optimization problem is given, including the objective function, optimization strategy and constraints. It is worth mentioning that the dynamic objective is derived from the time scale. Afterwards, the economic and comprehensive objective combining economic and dynamic objectives are implemented. Finally, in order to testify the availability of the comprehensive objective, dynamic deviation of the configuration results is computed. The results indicate that the configuration strategy using the comprehensive objective reduces the total deviation by 5.56% in dynamic dispatch. © 2022 IEEE.

关键词： Electric load dispatching

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