新能源
- The Paper
Research on Optimization of Operation Strategy for Independent New Energy Storage Power Stations Considering Capacity Value
Abstract：ObjectivesThe construction of a new power system under the dual carbon goals requires energy storage to provide key support. Currently, the construction of new energy storage faces the challenges of high investment cost, long payback period, and low utilization rate. Therefore, a novel optimization method for operating strategies is proposed, aiming to promote the large-scale application and development of energy storage through shared investment cost among multiple parties.MethodsFirstly, a daily cost assessment model is established based on the full lifecycle cost of independent energy storage power stations. Then, based on the evaluation model, a multi-market participation framework covering peak-valley arbitrage, frequency regulation, and leasing is designed. Finally, by introducing a cost allocation coefficient, a flexible cost-sharing mechanism for energy storage is established, enabling dynamic optimization of the operation costs of energy storage power stations through leasing market price signals.ResultsThe method increases energy storage revenue, accelerates the cost recovery period, and the cost allocation coefficient can be flexibly adjusted with the development of energy storage technology, thereby improving the strategy’s adaptability and sustainability.ConclusionsThis study offers an effective pathway for energy storage cost allocation and holds significant implications for promoting large-scale investment in energy storage construction.Keywords：energy storage;independent new energy storage power station;cost allocation;strategy optimization;multi-market participation;capacity leasing;economic performance of energy storage131|41|0
<HTML><L-PDF><WORD><Meta-XML>Updated：2026-06-29Comparison of Characteristics and Exergoeconomic Between Hydrogen and Natural Gas-Fueled Compressed Air Energy Storage Systems
Abstract：ObjectivesThe natural gas-fueled compressed air energy storage (CAES) system presents environmental pollution challenges, and replacing natural gas with hydrogen as fuel cannot cause greenhouse gas emissions. However, there is currently insufficient understanding of the technical and economic feasibility of the hydrogen-fueled CAES system, so it is necessary to carry out relevant research.MethodsBased on exergy and exergoeconomic analysis methods, a comparative analysis is conducted on the thermodynamic performance, distribution of irreversible losses, economic factors, and exergoeconomic performance of the hydrogen and natural gas fueled CAES systems. In addition, the sensitivity of two parameters is also discussed.ResultsThe hydrogen-fueled CAES system outperforms the natural gas-fueled CAES system in terms of discharge time, energy storage density, and exergy efficiency. Due to the higher cost of hydrogen compared with natural gas, the levelized cost per unit exergy of the product for the hydrogen-fueled CAES system is $155.62/GJ, significantly higher than the corresponding cost of $27.57/GJ for the natural gas-fueled CAES system. In order to align the investment payback period of the hydrogen-fueled CAES system with the commercial competitiveness of the natural gas-fueled CAES system, the recommended selling price for electricity should reach $0.206 2/(kW⋅h). Additionally, the hydrogen-fueled CAES system is more sensitive to parameter changes and can achieve better performance improvement and cost reduction under high parameter conditions.ConclusionsThe research results reveal the potential applications of the hydrogen-fueled CAES system and provide a technical reference for its further commercial promotion.Keywords：energy storage;hydrogen fuel;compressed air energy storage (CAES);exergoeconomic analysis;sensitivity analysis85|30|1<HTML><L-PDF><WORD><Meta-XML>Updated：2026-06-29Recent Developments on the Application of Chloride Molten Salt Heat Storage Technology to New Energy Power Generation
Abstract：ObjectivesUnder the background of “double carbon”, molten salt thermal storage technology has been developed rapidly. Chloride molten salt has been used in solar thermal power generation and renewable energy peaking due to its advantages of good energy storage density, wide operating temperature range and low cost, therefore, the research progress of chloride molten salts in the field of new energy power generation is reviewed.MethodsThis work reviews domestic and international research on chloride molten salt materials, summarizes the methods to improve the thermal conductivity of chloride molten salts, outlines the measurement and regulation ways for the phase change behavior of chloride molten salts, and describes the corrosion studies on chloride molten salts. The application of chloride molten salt in the fields of photovoltaic power generation, new energy consumption and thermal power plant renovation is highlighted. It is pointed out that photovoltaic power generation is an important application of chloride molten salt in large-scale energy storage, and renewable energy consumption is a new strategy for the application of chloride molten salt. Finally, it outlooks the problems that need to be solved in the future development of chloride molten salt heat storage technology.ConclusionsThe development of alloy materials capable of withstanding high temperatures and corrosive environments, the exploration of cost-effective corrosion control technologies, and the collaborative development of chloride molten salt purification and corrosion mitigation methods are proposed as key issues for the commercialization of molten salt thermal storage technology. The transformation and upgrading of traditional energy systems by adopting molten salt thermal storage technology to realize clean and efficient energy utilization is an important trend in the future development of the energy field.Keywords：new energy;energy storage;solar energy;chloride molten salt;photothermal power generation;phase change heat storage;thermal conductivity;corrosion107|106|3<HTML><L-PDF><WORD><Meta-XML>Updated：2026-06-29Research Status and Prospect of Lithium-Ion Battery Modelling
Abstract：ObjectivesAs one of the core technologies of battery management system (BMS), the research on lithium-ion battery model plays a vital role in optimizing battery performance and extending battery life. In order to facilitate the selection of appropriate models in different scenarios, different types of modeling methods for lithium-ion batteries are systematically summarized and compared.MethodsFirstly, the working principle of lithium-ion battery is explained, and the importance of accurate modeling is emphasized. Then, the current widely used lithium-ion battery models is comprehensively summarized according to different application scenarios, and a series of novel machine learning battery models are analyzed and discussed. Finally, the challenges of lithium-ion battery modelling techniques and future research trends are discussed.ConclusionsIt is found that traditional battery models all have certain limitations, while data-driven models often have more unique advantages in dealing with complex systems. Future research needs to find a balance between model complexity and usability. The research results provide a reference for application and future development of lithium-ion batteries in energy storage systems.Keywords：lithium-ion batterie;energy storage;electric vehicle;battery management system (BMS);battery modeling;equivalent circuit model (ECM);electrochemical model (EM);machine learning model145|181|5<HTML><L-PDF><WORD><Meta-XML>Updated：2026-06-29Research Progress on Hydrated Salt-Based Inorganic Composite Phase Change Materials and Their Applications in Battery Thermal Management
Abstract：ObjectivesPhase change heat storage technology is one of the most concerned energy storage and management techniques in recent years, which is of great significance to realize the comprehensive gradient utilization of energy and improve the efficiency of energy utilization. Hydrated salt-based inorganic composite phase change material (PCM) exhibits significant potential for energy storage and thermal management. This review analyzes the physical properties of materials and the application in battery thermal management, to clarify the technical challenges faced in improving properties and applications. The corresponding improvement strategies are proposed to promote the application of hydrated salt-based inorganic composite PCM.MethodsBy analyzing the research results of hydrated salt PCM at home and abroad in recent years, the improvement effects of additives modification and reasonable encapsulation on the inherent defects such as supercooling, phase separation and liquid phase leakage of hydrated salt PCM, as well as the effects on phase change temperature, latent heat, thermal conductivity and thermal cycle stability are discussed.ResultsThe modification technology significantly improves the inherent defects of the hydrated salt PCM, and significantly improves the thermal conductivity and thermal cycle stability of the material. Furthermore, hydrated salt-based inorganic composite PCM demonstrates excellent performance in lithium-ion battery thermal management, significantly lowering the maximum temperature and temperature differential, thereby improving overall battery performance and safety.ConclusionsThe large-scale application of hydrated salt-based inorganic composite PCM still faces challenges related to thermal stability and cost. Future research should further optimize the composition and structure of these materials, develop new encapsulation materials and additives, and comprehensively improve the overall performance of the materials. Particularly in the area of thermal management for lithium-ion batteries, it is crucial to strengthen the coupling research between the thermal physical characteristics of the materials and the electrochemical performance of the batteries, and provide sufficient theoretical and experimental basis for designing efficient and safe battery thermal management systems.Keywords：phase change heat storage;hydrated salt;composite phase change materials;lithium-ion battery;battery thermal management;thermal runaway protection;additives;encapsulation materials473|1422|2<HTML><L-PDF><WORD><Meta-XML>Updated：2026-06-29Optimized Operation Strategy of Wind-Solar-Storage Integrated Charging Station Considering Power-to-Hydrogen and Demand Response
Abstract：ObjectivesTo meet the charging demands of new energy vehicles and promote the utilization of renewable energy, an optimized operation strategy of a wind-solar-storage integrated charging station, considering power-to-hydrogen conversion and demand response is proposed.MethodsFirstly, an optimized model for electricity price at energy charging stations is developed based on the Logistic function response mechanism. This model is then solved using the non-dominated sorting genetic algorithm Ⅱ (NSGA-Ⅱ), thereby guiding users to reasonably shift the charging load. Secondly, based on the optimized electricity price and load distribution, and by comprehensively considering energy procurement costs, operational and maintenance expenses, and constraints such as power balance at energy charging stations, an optimized operational model is established for a wind-solar-storage integrated charging station equipped with a power-to-hydrogen conversion device. This model aimed to minimize daily operational costs. Finally, simulation research is conducted on the MATLAB platform.ResultsConsidering the power-to-hydrogen conversion and demand response, the daily operational costs of the charging stations are reduce by 34.74%, and the utilization rates of the wind and solar power increased by 25.84% and 61.60% respectively.ConclusionsThrough the implementation of power-to-hydrogen conversion and demand response measures, the operational costs of the charging stations can be significantly reduced, and the utilization of wind and solar power can be improved.Keywords：new energy vehicles;wind-solar-storage integrated charging station;power-to-hydrogen;demand response;electricity price;optimized operation;renewable energy consumption;non-dominated sorting genetic algorithm Ⅱ(NSGA-Ⅱ)94|742|7<HTML><L-PDF><WORD><Meta-XML>Updated：2026-06-29System Simulation Study on Performance of Non-Supplementary Combustion Liquid Compressed Air Energy Storage System
Abstract：ObjectivesCompressed air energy storage is a type of energy storage technology with large capacity, long cycle, low cost and high efficiency. Due to the strict requirements of gas storage chambers, gaseous compressed air energy storage cannot be widely promoted and applied in multiple scenarios and on a large scale. Therefore, a non-supplementary combustion liquid compressed air energy storage system was proposed.MethodsA theoretical calculation model was constructed to conduct sensitivity analysis on key parameters such as compressor interstage temperature, number of compressor stages, and turbine inlet temperature within the system. The results were compared with those of a non-supplementary combustion gaseous compressed air energy storage system.ResultsToo low or too high interstage temperature in compressors will restrict the improvement of electric-electric conversion efficiency of the system. The number of compressor stages is positively correlated with compressor power consumption, and negatively correlated with the turbine power generation. Under the same inlet pressure, the higher the inlet air temperature of the turbine is, the larger the power generation is, and the higher the electric-electric conversion efficiency is. Compared with the non-supplementary combustion gaseous energy storage system, the density of non-supplementary combustion liquid energy storage system is increased by 3.7 times, and the volume of the storage chamber is decreased by 9/10.ConclusionsThe non-supplementary combustion liquid compressed air energy storage system effectively solves the problem of gas storage chambers, enabling compressed air energy storage technology to be promoted and applied in multiple scenarios and on a large scale. It is of great significance for deep peak shaving of thermal power units and large-scale energy storage in power grids.Keywords：energy storage;peak shaving;non-supplementary combustion;gaseous compressed air energy storage;liquid compressed air energy storage106|321|0<HTML><L-PDF><WORD><Meta-XML>Updated：2025-06-15Intelligent Construction System and Key Technology for Compressed Air Energy Storage Power Plant
Abstract：ObjectivesCompressed air energy storage (CAES) is a new type of energy storage system that utilizes the mutual conversion of electrical energy and compressed air potential energy to balance the fluctuation of power grid. The accumulation of relevant experience in the construction and operation of CAES power station is of great significance to the development of CAES technology. In view of the low efficiency of information transfer between the designer and the site, the difficulty of construction control, and the difficulty of overall project process supervision, a whole-process intelligent system suitable for CAES power station was proposed.MethodsFirstly, the construction process of CAES power station was analyzed and its engineering characteristics were found out. Secondly, based on the whole process from design to operation and maintenance of CAES power station, the whole process intelligent construction system of CAES power station was constructed in space and time dimensions. Finally, in the design stage, the key techniques such as forward design drawing were proposed. In the stage of equipment manufacturing, the key technologies such as virtual pre-assembly of equipment were proposed. In the construction stage, the key technologies such as 5D construction management were proposed. In the operation and maintenance stage, the key technologies such as data delivery oriented to operation and maintenance were proposed.ResultsThe verification results of a 300 MW CAES demonstration project show that the construction of the whole process intelligent system of CAES power station is reasonable, and the application of key equipment and software provides technical support for the project.ConclusionsThrough the intelligent system of the whole process of CAES power station and its key technologies, the interworking chain of each stage of power station construction is opened, and the information management of the whole life cycle of CAES power station is realized.Keywords：energy storage;compressed air energy storage (CAES);intelligent construction;forward design;digital delivery59|190|4<HTML><L-PDF><WORD><Meta-XML>Updated：2025-06-15Numerical Simulation of Solid Oxide Fuel Cell Tail Gas Catalytic Combustion Based on Three-Way Catalyst
Abstract：As a clean and efficient advanced power generation equipment, the solid oxide fuel cell (SOFC) has the structural advantages of separation of air and fuel gas, which makes it easy to enrich the CO2 in the tail gas of the fuel side. In order to improve the CO2 concentration in SOFC anode tail gas, a steady-state multi-physical coupled model was established for the commercial three-way catalysts, considering the mass transfer, heat transfer, and chemical reaction processes in the catalytic combustion of SOFC anode tail gas. Based on this model, the catalytic combustion characteristics of SOFC anode tail gas were simulated. The effects of different inlet temperature, reaction space velocities and catalyst sizes on combustion temperature, wall temperature, H2 conversion, CO conversion and outlet CO2 concentration were studied, and the change trend of each parameter was obtained. Based on the existing experiments, the outlet CO2 volume fraction could be increased from 94.72% to 95.33% by optimizing the space velocity, and the outlet CO2 concentration could be increased from 94.72% to 95.64% by optimizing the catalyst size. By analyzing the variation characteristics of outlet CO2 concentration under different working conditions in the catalytic combustion of tail gas, the guidance for the commercial three-way catalyst to be used in the catalytic conversion of anode tail gas and CO2 enrichment in the tail gas of SOFC system was provided.Keywords：carbon emission;carbon capture;three-way catalyst;solid oxide fuel cell (SOFC);numerical simulation61|161|1<HTML><L-PDF><WORD><Meta-XML>Updated：2025-06-15Long Period Operation of Ionic Liquid Based Electrical Double Layer Capacitor at 45 ℃ and 3 V
Abstract：The long period operation at 45 ℃ and 3 V of the mesoporous carbon-ionic liquid-carbon covered aluminum foam based electrical double layer capacitor was studied. The composite electrode sheet was formed by embedding mesoporous carbon with carbon-coated aluminum foam, and the 3 cm×5 cm pouch was composed of EMIBF4 as electrolyte. The operation law of charge and discharge was studied at 45 ℃ and 3 V for 1 500 h. It is found that the internal resistance change rate is about 10%, and the capacitance retention rate is as high as 98%, both of which are far better than those of organic liquid-based electrical double layer capacitor at 2.7 V and 65 ℃. The gas generation of pouches at 2.7 V/65 ℃ and 3 V/45 ℃ was compared. It is proved that the soft package of mesoporous carbon-ionic liquid-carbon-coated aluminum foam based electrical double layer capacitor can work stably at 3 V, 45 ℃ for 1 500 h. It provides a solid foundation for further promoting the application of ionic liquid-based electrical double layer capacitor.Keywords：energy storage;electrical double layer capacitor;ionic liquid;carbon-coated aluminum foam;mesoporous carbon;high temperature aging82|73|1<HTML><L-PDF><WORD><Meta-XML>Updated：2025-06-06
