bluuebunny/crossref_metadata_2025_split huggingface dataset:
Design and optimization of zero-carbon integrated energy system for highway service area
Authors: Wu Simin , Gao Yanyu , Tang Ruoshi , Cai Liang , Du Yang , Guo Lingyu , Yang Zhongguang 
Published: August 2024

Abstract
The challenge of achieving dual-carbon targets arises from the issue of high carbon emissions in Chinese highway service areas. To address this, a comprehensive electric-thermal-hydrogen energy system is proposed, consisting of a new energy generation system, heat pumps, electrolyzers, hydrogen fuel cells, energy storage devices, and charging stations. A dispatch model for the integrated energy system is established, with the objective of minimizing the total operating cost while satisfying the constraints of each device and the electric-thermal-hydrogen balance. The model is implemented in MATLAB, and the ideal optimal solution for each decision variable is obtained using the Gurobi solver. The investment and operating costs, as well as the scheduling results for electricity, heat, and cooling, are analyzed. The results indicate that the electrolyzer-fuel cell system can improve the system’s operational stability and flexibility in dispatch optimization. Due to the instability of photovoltaic and wind power devices and the fluctuating nature of loads, energy storage devices are required for peak load shaving in the system. The zero-carbon integrated energy system model can calculate the most economical investment plan based on the load and meteorological conditions of different service areas.
Optimization of rural integrated energy system considering carbon emissions
Authors: Sun Ruonan , Su Juan , Du Songhuai 
Published: August 2024

Abstract
The country’s objective of achieving “carbon neutrality” has necessitated transforming and upgrading rural energy systems. Establishing a comprehensive rural energy system is crucial to accelerate the development of a clean energy system in rural areas. This paper addresses the context of China’s “carbon neutrality” goal and presents a model for a rural integrated energy system that incorporates electricity, biomass energy, and PV. The model aims to optimize the capacity of energy devices while considering economic and environmental factors. Practical case studies are conducted to validate the feasibility of the proposed model.
Research on the photoelectricity mismatch loss of photovoltaic and thermal (PV/T) units connected in series at different temperatures
Authors: Zhu Chao , Chen Ziyu , Quan Chen , Dong Le , Feng Haoliang 
Published: August 2024

Abstract
A simulation study was conducted on the mismatch loss caused by temperature differences between photovoltaic and thermal (PV/T) modules connected in series. A calculation method for the IV curve of PV/T modules connected in series was proposed, and an equivalent circuit model of PV/T units was established using Multisim software. Two different temperature zones, three different temperature zones, and four different temperature zones of PV/T units connected in series were separately established. A numerical calculation model based on the Lambert W function was used to study the series mismatch characteristics of PV/T cells at different temperature ranges. The series connection method of PV/T modules obtained through experimental comparison research: (1) The maximum temperature difference of PV/T modules in the series should be controlled within the range of 10-20°C as much as possible; (2) The temperature of adjacent PV/T modules in the string should achieve continuous distribution; (3) Considering that the maximum operating current of a concentrated PV/T system is greater than that of a regular photovoltaic system, it is necessary to reduce the system output current and increase the system output voltage as much as possible in engineering. A series connection should be the main connection method for a string connection.
Harmonic absorption method for cement kiln power supply system under clean energy integration
Authors: Chen Xiao , Hu Gaoping , Hu Quangan , Liu Mingtong , Chen Yunfei 
Published: August 2024

Abstract
To maintain the normal operation of the power supply system, a method for harmonic absorption in the cement kiln power supply system under clean energy access is proposed. We design a data acquisition structure for the cement kiln power supply system and extract the harmonic current signal of the power supply system through variational mode decomposition, harmonic compensation for the cement kiln power supply system under clean energy integration, and harmonic absorption of cement kiln power supply system through the current equivalent model. The experimental results show that the harmonic signal extraction accuracy of this method is high, and the difference between the consumed discharge power and the power demand is minimal. It can achieve a balance between power supply and demand through harmonic compensation, which is conducive to the stable operation of the power supply system.
The development characteristics and prospect of pumped storage power station as the main energy storage facility in China under the background of double Carbon
Authors: Zhao Kaili , Wang Jue , Qiu Liuchao , Wang Wei 
Published: August 2024

Abstract
Intending to reach the peak of carbon and carbon neutrality, to become a global consensus, and to achieve the goal of “reaching the peak of carbon emissions before 2023 and carbon neutrality before 2060”, China proposed in March 2021 to construct a new power system with new energy as its core. For the realization of the above goals, the construction of a pumped storage power station is quite important, and it is the key to the realization of green and low-carbon energy transformation and has a crucial impact on the achievement of China’s “double carbon” goal. This paper first introduces the related concepts of dual-carbon background and pumped storage power stations. Then the development dynamics of the station in a period are analyzed to obtain its characteristics, such as wide distribution, fast construction, and variety. Finally, this paper puts forward and summarizes the suggestions and prospects of pumped storage power stations for China’s new energy growth.
A study on long-term industrial electricity consumption and carbon emission forecasting methods based on TimesNet models
Authors: Feng Xiaowei , Fu Jiayu , Zhang Zhili , Li Jingjie , Li Tianyu , Zhao Minrui 
Published: August 2024

Abstract
Aiming at the prediction problem of industrial electricity consumption and carbon emission, a TimesNet model is established to improve the accuracy of industrial electricity consumption and carbon emission prediction. Five significant influencing factors were screened out by grey correlation analysis; based on the energy consumption dataset of an iron and steel enterprise in 2023, the dataset was preprocessed and inputted into the TimesNet model, the prediction results were integrated and summarized, and the prediction results of the DLinear, LightTS, PatchTST, and iTransformer time series prediction models were compared and analyzed. The results show that the predicted values of the TimesNet model fit the actual values, and its mean absolute error (MAE), mean square error (MSE), root mean square error (RMSE), and mean absolute percentage error (MAPE) are 0.31, 0.36, 0.6, and 1.12, respectively, which are better than those of the other models. It proves that the model can predict industrial electricity usage and release of carbon more accurately, providing a practical method for industrial electricity usage and release of carbon prediction.
Comprehensive benefit evaluation of Carbon reduction in power transmission and transformation projects by TOPSIS method based on combination weighting
Authors: Xin Cheng , Wang Shuo , Wang Yinan , Yao Fan , Xu Weimao , Chen Biao 
Published: August 2024

Abstract
With the continuous promotion of carbon peak carbon neutrality, the investment and construction of new power systems have accelerated, and the construction of a low-carbon economy has become an inevitable trend of the transformation and development of power transmission and transformation projects. In this paper, the FAHP and entropy methods are used to evaluate the economic, social, and social benefits of carbon reduction in power transmission and transformation projects and finally establish a set of comprehensive benefit evaluation systems for carbon reduction in power transmission and transformation projects. Under this evaluation system, the comprehensive benefit of 220 kV power transmission and transformation project in A province is sorted by entropy weight-TOPSIS method. The comprehensive benefit of power transmission and transformation project B >C >A project is finally obtained. At the same time, in the sub-criteria of economic benefits, the index of “enterprise asset-liability ratio” has the largest comprehensive weight. The “using distributed energy generation” index has the largest comprehensive weight in the sub-criteria layer of carbon reduction benefit. In the subsequent construction of power transmission and transformation projects, enterprises can prioritize improving the above indicators to improve carbon reduction efficiency and economy.
Enhanced vanadium redox reaction catalytic properties enabled by tunning oxygen vacancy in rutile tio2 coated graphite felt electrodes
Authors: Liu Yancai , Duan Xiaobo , Wang Haonan , Yu Jiaao , Zhou Jian , Lu Birou , Zhu Ming , Zheng Bin , Zhang Lei 
Published: August 2024

Abstract
Catalyzing vanadium redox reactions in VRFBs with transition metal oxides is an effective and affordable approach. In this study, the surface electron distribution of TiO2 was regulated by introducing oxygen vacancies into its lattice, enabling the electrode to exhibit outstanding catalytic efficacy in VO2
+/VO2+ and V3+/V2+ redox transformations and suppress the detrimental side reaction (HER and OER) simultaneously. Benefiting from the enhanced catalytic activity and selectivity, the 1000-TiO2-GF electrode sustained a stable operation for 100 cycles at 120 mA cm−2 with no discernible efficiency degradation. The DFT results indicate that oxygen vacancy in TiO2 provides more extra electrons to its neighboring titanium, further strengthening the interaction between the electron-rich titanium and oxygen in VO2
+/VO2+, thus enhancing its catalytic performance. The enhanced catalytic activity for V3+/V2+ on oxygen vacancy-rich TiO2 coating can be attributed to the effective suppression of hydrogen evolution reaction, which can occupy active sites exclusively and produce detrimental H2 bubbles. This insight provides valuable guidance for the innovative design of catalysts in vanadium redox flow batteries.
Study on photovoltaic combined air source heat pump heating system under typical meteorological conditions
Authors: Wang Litao , Wang Shuaijie 
Published: August 2024

Abstract
This paper proposes a photovoltaic (PV) combined air source heat pump heating system for rural areas in severe cold regions of northern China, where the current clean heating methods have high costs and low efficiency. The paper uses meteonorm8 and TRNSYS software to derive the typical meteorological parameters and simulate the system performance in a guard room in Shenyang city. The paper analyzes the heat pump power consumption, PV cell power generation, and economic and environmental benefits of the system under different outdoor temperatures in the heating season. The results show that the system can meet the heating demand and maintain a comfortable indoor temperature, with an annual cost of 1603 RMB, which is 61.33% lower than a single heat pump system. The system can also reduce the emissions of carbon dioxide, sulfur dioxide, and dust by 2619.43 kg, 10.78 kg, and 6.91 kg per year, respectively, demonstrating its economic feasibility and environmental contribution.
Research on the coupling mechanism of transient overvoltage in large-scale new energy station grid connection
Authors: Hou Kaiyun , Ren Bixing , Zhang Ziao , Li Qiang , Li Yansong , Liu Jun 
Published: August 2024

Abstract
The large-scale new energy station transmission system is relatively weak, and long-distance transmission is prone to transient overvoltage. The hysteresis of the control loop of the Static Var Generator (SVG) can also contribute to the increase of transient overvoltage. Therefore, this article first establishes a photovoltaic power generation model, SVG model, and photovoltaic grid-connected system. Secondly, the transient overvoltage coupling mechanism of photovoltaic grid-connected systems under various faults such as commutation failure, DC blocking, and DC restart was analyzed through PSCAD simulation. At the same time, the changes in transient overvoltage before and after the installation of SVG were compared, and SVG’s reactive power dynamic behavior was analyzed. Finally, the mechanism of SVG assisting in increasing transient overvoltage was summarized.
An automatic recognition method for power quality disturbances based on CAB-Net
Authors: Wang Minghao , Wang Liqiang 
Published: August 2024

Abstract
The accurate identification of power quality disturbances (PQDs) is crucial for maintaining the stability and reliability of power systems. In this paper, an automatic identification method for PQDs based on CNN-BiGRU-Attention Network (CAB-Net) is proposed. To handle the temporal characteristics and complexity of composite PQDs signals, the proposed model leverages the bidirectional information transmission of the BiGRU model to efficiently extract temporal features. Furthermore, to boost recognition accuracy, an attention mechanism is incorporated, the key information can be intelligently locked in the feature extraction stage, and the information can be efficiently screened and utilized, thereby enhancing its ability to identify power quality disturbance signals. To confirm the validity of the method, we use the simulation data for experimental proof. Experimental results demonstrate that compared to traditional power quality disturbance identification methods, the method has excellent recognition ability and stronger robustness.
A Low voltage AC fault arc detection method based on multi-feature fusion
Authors: Li Zhaoqiang , Liu Yang , Liang Zhihua , Huang Ying 
Published: August 2024

Abstract
The complex electrical environment makes it difficult for most arc detectors on the market to accurately detect faulty arcs. A universal fault arc detection method based on machine learning (ML) algorithms is proposed in this paper. To address the potential hazards of fault arcs in the power system, firstly, the causes, time-domain, and frequency-domain characteristics of fault arcs were analyzed. Then, an arc experiment platform was built according to national standards, and current data was collected under various load conditions. Finally, the arc detection model was trained based on ML. The main contribution of this study is to explore a feature combination that is not affected by load type interference and has strong generalization ability for identifying fault arcs, clarify the key factors and feature extraction methods for identifying fault arcs, and develop a set of high-precision arc detection methods, providing strong guarantees for the stable operation of the power system.
Comparative study of electric power structure of hydrogen fuel cell electric propulsion ship system
Authors: Cai Huiyin , Sui Huiran , Li Zhenyu , Wu Wenbin 
Published: August 2024

Abstract
Aiming at the problem of the applicability of active and semi-active structures of hybrid energy storage units to the complex working conditions of ships in the hydrogen fuel cell electric propulsion system of ships, a comparative study of such structures is carried out in terms of the control strategy, capacity design and optimization effect, respectively. The hybrid energy storage unit in the active structure, supercapacitor and battery, are both connected to the DC bus through the converter. In the hybrid energy storage unit in the semi-active structure, the battery is connected to the low-voltage DC bus through the converter flow in parallel with the supercapacitor, and then connected to the DC bus through the converter. Two kinds of hydrogen fuel cell electric propulsion ship system topology simulation models were established by MATLAB/Simulink respectively, and simulation verification was carried out. The simulation results show that the hybrid energy storage unit with an active structure has stronger adaptability in complex working conditions during ship operation.
Research on characteristics of radio interference of MMC-HVDC lines
Authors: Wang An 
Published: August 2024

Abstract
Previous research on radio interference in DC lines has focused on radio interference caused by corona discharge. But with the development of Modular Multilevel Converter Based High Voltage Direct Current (MMC-HVDC) systems, high frequency signals generated by fast switching of Insulate-Gate Bipolar Transistor (IGBT) are transmitted to Direct Current (DC) lines and radiate radio interference outward. On the one hand, the radio interference formula recommended by the dual-level DC transmission line recommended by International Special Committee on Radio Interference (CISPR) is calculated by the radio interference generated by the line corona discharge; On the other hand, by establishing a MMC-HVDC line model, analyse the high frequency signal transmission generated by the fast switching of IGBT in the Modular Multilevel Converter (MMC) to the radio interference generated by radiating outside the DC line. The results of the study show that the radio interference generated by high -frequency signals of IGBT fast switching will decrease with the length of the line. The radio interference value generated by corona discharge is 47.43 dB(μV/m), the radio interference generated by the high-frequency signal of IGBT fast switching is 40.83 dB(μV/m), which is too small than the radio interference of corona discharge.
Simulation study on acoustic performance of Tonpilz piezoelectric transducers
Authors: Wang Ying 
Published: August 2024

Abstract
The Tonpilz configuration of transducers is recognized for its capability to generate high-power acoustic emissions at relatively lower frequencies, which is a prevalent setup in sonar systems. Comprising a frontal radiating element, a rear casing, and a piezoelectric ceramic ring sandwiched between them and affixed by a central bolt, this study delineates the inclusion of bolt pretension impact. The investigation assesses the structural and acoustic ramifications of the transducer’s frequency response. These findings indicate the commendable acoustic performance of the transducer.
Research and application of composite insulator overheat identification method based on improved case segmentation
Authors: Rao Chengcheng , Liu Gao , Li Changyu 
Published: August 2024

Abstract
How to quickly and accurately locate the heat of power components is one of the problems that need to be discussed frequently in the power field. At the same time, due to the diverse types of equipment in the power industry and the complex environment, if the heating position of the components cannot be located in time and further safety measures are taken, it will greatly affect whether the line can run stably. Based on infrared images, the device can be detected at a distance, and the problem can be found without interrupting its working state, which is more efficient in the process of equipment inspection. At present, some algorithms are based on infrared image research, but the positioning is not accurate, and some problems such as the temperature extracted by the algorithm and the temperature deviation between the actual parts caused by environmental factors, have not been a perfect solution. With regard to these problems, this paper presents a new method for overheating identification of composite insulators. First, the external profile of composite insulators is identified in infrared images through the YOLOV5 instance segmentation algorithm, and the rod core position of composite insulators is located based on this external profile. Then, the temperature matrix of the rod core position is obtained through the original heat matrix in infrared images. By comparing the temperature of the temperature matrix, we can determine whether the temperature is abnormal. In the actual production environment, the accuracy rate of the proposed method is 0.84, the error detection ratio is 0.2, and the total time of the algorithm is 216 ms. The results show that the proposed method has a good component positioning effect and can filter most of the temperature identification errors caused by environmental factors. It provides a new solution to solve the problem of temperature anomaly identification of overhead line power equipment in different scenarios.
Life prediction of lithium battery based on particle filter and BP neural network
Authors: Zhou Jixiang , Huang Weijian , Li Yuhan , Wang Zhiyun 
Published: August 2024

Abstract
This paper focuses on using Particle Filter (PF) and Back Propagation (BP) neural networks for RUL prediction. This fusion strategy uses particle filtering (PF) for battery system state estimation and prediction while considering various types of noise and uncertainties to assess the system state comprehensively. Furthermore, the strategy employs a BP neural network to learn and combine historical data patterns with particle filtering estimation, improving prediction accuracy and reliability. This study validates the proposed fusion method by comparing it with the original PF and BP prediction methods using Toyota Motor Corporation and Stanford University datasets. The experimental results demonstrate its superior performance and higher prediction accuracy.
Modeling simulation and output characteristic analysis of PEMFC
Authors: Wang Jieyu , Zhang Kaige 
Published: August 2024

Abstract
Facing the dual problems of environmental pollution and energy shortage, PEMFC has become a research hotspot because of its high energy conversion efficiency and non-pollution. In this paper, theoretical voltage and various loss voltages of PEMFC were analyzed in detail, and PEMFC was modeled in Simulink using an empirical formula. The influence of temperature, gas pressure, and film water content on output characteristics of PEMFC was explored by using the control variable method, and it was concluded that the parameter values of the three could be improved within a certain range. Both can improve the output characteristics of PEMFC, which provides certain reference significance for the control of PEMFC.
Investigation methods for enhancing the energy consumption capacity of novel PV access distribution networks
Authors: Tian Shiji , Wang Hongkun , Gong Jianfeng , Zheng Wei , Han Yiming , Zhang Bin 
Published: August 2024

Abstract
This paper presents a method for reconstructing distribution networks using soft open point (SOP) and demand response (DR) energy storage, which can effectively solve the problems of voltage overruns, line overcurrent, and bidirectional flow currents caused by the photovoltaic (PV) getting into the distribution network. First, the model for the rebuilding of the distribution network is created by using the energy storage method of DR and SOP. Then, MISOCP, which stands for mixed-integer second-order cone programming, is the model that is used to change the distribution network reconfiguration, and the transformed model is solved by the MOSEK algorithm package in MATLAB. Finally, the strategy suggested in this research may successfully enhance the distribution grid’s consumption capacity after PV access, as shown by the verification in the IEEE33 node distribution grid system.