bluuebunny/crossref_metadata_2025_split huggingface dataset:
Harmonic Analysis of Magnetic Field Measurement of Maglev Plane Motor
Authors: Wenru Xu , Shengguo Zhang , Weiwen Hu , Jiawei Yang , Hao Hou 
Published: June 2021

Abstract
With the rapid development of production scale and technology level in the field of precision engineering technology, plane motor is a new type of motor which can directly output plane motion and has the characteristics of simple structure, high precision and fast response speed. In this paper, the magnetic levitation plane motor (MLPM) as the research object, it is a hot research and development in recent years, MLPM has a good application prospect in driving advanced manufacturing equipment used under high vacuum conditions. In this paper, the harmonic characteristics of magnetic levitation plane motor are analyzed by establishing the analytical model of each odd harmonic. The actual magnetic field of the permanent magnet array is measured on the measuring platform of Tesla meter, and the measurement results are analyzed. And then the analytical data are compared with the actual field data. Further calculation shows that the maximum relative error between the simulated and measured results decreases gradually with the increase of the odd harmonic order of the magnetic field.
Research on the Business Model of Hazardous Waste Disposal of Power Grid Enterprises Based on the Commercial Canvas Model
Authors: Xinli Xiao , Zhuonan Li , Yanming Jin , Min Liu , Lingyu Chen 
Published: June 2021

Abstract
The issue of hazardous waste disposal has become a key difficulty and obstacle for power grid companies to achieve green development. This article systematically analyses the business model of hazardous waste disposal of power grid companies based on the business model canvas model, which consists of value proposition, core resources, key business, important partners, customer segmentation, channel access, customer relationship, cost structure and revenue sources, and then lays a theoretical foundation for hazardous waste disposal of grid companies.
Research on Influence of Temperature on Capacity Fade of Lithium Ion Battery
Authors: Bai Dingsong , An Ziliang , Wang Ning , Liu Shaofeng , Yu Xintong 
Published: June 2021

Abstract
In this paper, the research object is the ternary lithium battery with the NCA as positive material and graphite as negative material. The model of one-dimensional capacity fade is established by COMSOL. At different simulated temperatures, the changes of the SOC and the voltage drop of the SEI film on the positive surface were analyzed. The results show that the SOC of average on the positive surface of the battery decreases with the increase of temperature and increase of the battery impedance.
Research on energy densities of secondary batteries
Authors: Zi-qiang Mei , Xiao-chen Liu , Wan-long You , Xiao-bin Yu 
Published: June 2021

Abstract
Improving the energy densities of secondary batteries has always been the core goal of scientific research and engineering development. In this paper, by testing the energy densities of the test samples, the gravimetric energy density (GED) and volumetric energy density (VED) of Li-ion and Li-metal batteries are analyzed. By comparing with the development trend of batteries at home and abroad, we can see that Li-metal batteries are the development direction of high-energy-density batteries in the future. By comparing the test results of this paper with the energy densities data published at home and abroad, we can see that the GED and VED of Li-ion and Li-metal batteries in China have reached the international advanced level. The research results of this paper can basically reflect the development status and provide guidance for the development of high-energy-density batteries in China.
Research on Live Detection Technology of Contact Ablation Degree of Power High Voltage Reactive Power Switching Switch
Authors: Wang Shao Ran , Zhang Yi Zhu , Zhao Xiao Bing , Jia Shou Hui , Yu Bo , Hou Xin Ming , Liu Yi Ning 
Published: June 2021

Abstract
In power system, high voltage reactive power switching switch is an important control unit, which is an important tool to start the connection of power equipment. In order to ensure the safe operation of high-voltage reactive power switching switch, this paper proposes a new method for live detection of contact ablation degree of high-voltage reactive power switching switch to solve the lack of effective detection and evaluation means of contact ablation degree of high-voltage reactive power switching switch in power system. During the opening and closing process of high voltage reactive power switching switch, RF electromagnetic wave signal will be radiated, which contains information reflecting the ablation degree of contact. In this paper, through the detection and analysis of electromagnetic wave signal, the detection of contact ablation degree of high voltage reactive power switching switch is realized. This paper analyzes the influencing factors of radiated electromagnetic wave in the process of circuit breaker opening and closing. The anti-interference method of electromagnetic wave field detection is used to realize the live detection of contact ablation degree of high voltage reactive power switching switch. It effectively solves the problem of mutation detection of contact ablation degree of high voltage reactive power switching switch, and greatly improves the detection rate of contact ablation degree defects.
Research on Fault Diagnosis of Smart Meters Based on Machine Learning
Authors: Huang Changbao , Wang Youxiang , Liu Ying , Wang Chao , Wang Guanhe 
Published: June 2021

Abstract
To strengthen the real-time monitoring and management of on-site meters and to detect hidden problems of meters for timely correction, this paper proposed a fault diagnosis method of smart meters based on the decision trees of machine learning. By establishing a fault analysis model for smart meters, this method analyzed the laws of smart meter failures. It extracted typical characteristics from the massive data produced by the operating smart meters and studied the correlation among these characteristics as well as weight coefficients to obtain the probability of smart meter failures. Furthermore, the model was constantly optimized according to the feedback of on-site meter troubleshooting from operation and maintenance personnel, which effectively enhanced the timeliness and accuracy of fault detection and correction and reduced the difficulty of operation and maintenance.
P-delta effect analysis of continuous distribution system based on generalized differential quadrature method
Authors: Wang Haifeng 
Published: June 2021

Abstract
Based on the generalized differential quadrature method, an analysis method of p-delta effect for continuous distribution system is proposed. Firstly, the structural system with continuous distribution of mass and stiffness is taken as the research object. Based on the principle of virtual work, the axial and transverse vibration equations considering the effect are given. Secondly, the partial differential equations are discretized by using the generalized differential quadrature method, and the dynamic ordinary differential equations are obtained to analyze the p-delta effect of the continuous distribution system. Finally, an example based on 5MW wind turbine parameters is analyzed, and the results show that the GDQM has high calculation accuracy, which can be obtained by dividing only a few nodes; This method can not only consider the second-order effect of gravity, but also consider the time-varying p-delta effect caused by vertical earthquake, and can reveal the influence of vertical earthquake on the lateral dynamic characteristics of structures in real time; No matter the gravity second-order effect or the time-varying p-delta effect, this method does not need iteration and has high computational efficiency.
Research on the Whole Process Control of Cold Chain Transportation under the Background of Resource Saving
Authors: Jing Ye , Si-Cong Li 
Published: June 2021

Abstract
With the continuous improvement of people’s requirements for food safety and quality, cold chain logistics has become the focus of much attention in the logistics industry. my country’s Cold chain logistics is developing rapidly in China, but the overall level is low, and the cold chain loss rate of fresh agricultural products is high, causing huge waste. Road transportation is an important part of cold chain logistics. 90% of the freight volume in the cold chain logistics is completed by road transportation, but the proportion of broken links in the transportation process reaches 60%, which seriously affects service quality of cold chain logistics. Cold chain logistics is directly related to people’s life safety and physical health, and it is also an important way for my country to build a resource-saving society. However, one of the problems with the inadequacy of the cold chain is the incomplete management system, extensive management methods, and imperfect management systems and standards of the cold chain transportation enterprises, refrigerated and heat-preserving vehicles and other basic elements by the industry management department. Therefore, it is necessary to establish a closed-loop management and control system for the entire process of “market access-process monitoring-service evaluation-joint rewards and punishments” centering on road cold chain transportation. The high-quality development of logistics creates a good market environment, improves the service quality and management level of cold chain transportation, and reduces the loss of agricultural products in the cold chain logistics process.
Research and Application of Electromagnetic Wave Signal Acquisition Device for Power System Circuit Breaker
Authors: Wang Shao Ran , Zhang Yi Zhu , Wang Chao , Jia Shou Hui , Hou Xin Ming , Lv Yue , Chen Chen 
Published: June 2021

Abstract
Power circuit breaker is an important tool to satisfy the controllability and safety of power system. Therefore, to ensure the stable operation of the circuit breaker is to ensure the normal supply of electric energy. In order to better capture the electromagnetic wave signal radiated by the circuit breaker and better judge the state of the electromagnetic wave radiated by the arc of the circuit breaker, a new type of vibration trigger device specially used for collecting the electromagnetic wave signal radiated by the circuit breaker and its use method are proposed in this paper. This method can collect the electromagnetic wave signal of circuit breaker through the optimized design of vibration trigger device. The device uses all metal integrated cast aluminum shell and independent power supply. This device can effectively resist electromagnetic interference, and is convenient for the acquisition of electromagnetic wave signal. The device developed in this paper and its application method belong to the field of off-line detection of electrical equipment, and are especially suitable for vibration triggering of the device when collecting the radiated electromagnetic wave signal during the action of circuit breaker.
Electrochemical evaluation myclobutanil as inhibitor for copper in nitric acid medium
Authors: Tao Xuefei. , Tengxu Lingjie , Liu Guanting , Tao Zhihua 
Published: June 2021

Abstract
Myclobutanil is a triazole fungicide with low toxicity and easily biodegradable so that it can be used as an alternative corrosion inhibitor in metal pickling. Myclobutanil was studied as a corrosion inhibitor of Cu in 0.5M HNO3 solutions by potentiodynamic polarization, electrochemical impedance spectroscopy (EIS) and scanning electron microscopy (SEM). Electrochemical test show that myclobutanil is an effective inhibitor and the inhibition efficiency equal approximately to 93.7% when the inhibitor concentrations were fixed in 1mM.
Experimental study on the effect of heat transfer temperature difference on frosting characteristics of air-cooled heat exchanger
Authors: Jia Lu , Shen Jiang , Hu Kaiyong , Zhu Tingting 
Published: June 2021

Abstract
In this paper, the frosting experiment was carried out by the wind tunnel experimental device in the single experimental section of the closed-mouth return flow. Through the experimental study on the influence of heat exchange temperature difference on the growth characteristics of the frosting layer in the finned evaporator under the experimental conditions of different initial head wind speeds, the following conclusions were drawn: At 2m/s, the frost thickness of finned tube evaporator increases gradually with the frosting time at different heat exchange temperature differences. At 3, 4, 5m/s initial face wind speed, the frost thickness of finned tube evaporator grows in a three-stage pattern at different heat exchange temperature differences. The cooling capacity of the evaporator at different face wind speeds and different heat transfer temperature differences increases first and then decreases with the frosting time.
Research on Electric Control Device of Hybrid Energy in Household Air Conditioning
Authors: Zhang Yanyan 
Published: June 2021

Abstract
Hvac energy consumption is the construction of large energy consumption, in order to realize building energy conservation to reduce the energy consumption of hvac operation, through the research by a thin film solar battery, connecting wires, charge and discharge controller, the electric control board outdoor, indoor machine electric control box, electronic circuit control board, switch and battery of household air conditioning hybrid energy electrical control devices, When it is sunny, the direct current generated by the solar cell group is directly supplied to the indoor unit. When it is cloudy, it is switched to the power supply to the indoor unit, forming a hybrid power supply mode for complementary use, which can effectively reduce the electric energy consumed by the operation of HVAC and realize energy saving in the operation of HVAC.
Research and Application of a Technology Eliminating Restriction of Electrical Equipment Capacity as Clean Electricity Heating Develops Rapidly
Authors: Limin Deng , Lingwen Sun , Di Zhao , Jia Song , Lingzhi Pan , Yizhu Zhang 
Published: June 2021

Abstract
Replacing coal by electricity projects is one of the national public welfare projects. In the field of energy conversion, the larger the number of electric heating users is, the more favorable it is to control air pollution, and the more significant benefits of the society, ecological system and environment are. This paper put forward a technology for solving restriction on rapid development of clean electricity heating due to electrical equipment capacity. It is able to enable a large number of users to access the power distribution network without capacity increase or with little capacity increase, which is beneficial to promoting electric heating extensively and accelerating the process of “replacing bulk coal by clean electric energy” project in China.
Research on Application of Network Slicing Technology Based on 5G in Smart Grid
Authors: Wei Hongliang , Chen Guohui , Zhang Yizhu , Guo Chao , Shi Shuo , Liu Yong , Wang Chuntao , Suo Dongdong 
Published: June 2021

Abstract
5G technology has been continuously promoted and has become a key driving force to promote the development of all walks of life and assist the national strategic decision-making. In the era of Internet of Everything, 5G network slicing technology, with its advantages of low latency, high security and scheduling, can better realize the rational and efficient scheduling and allocation of network resources, and fully improve the effective utilization rate of resources. This paper systematically summarizes the network slicing technology, analyzes the application of 5G network slicing technology in different power Internet of Things business scenarios and communication requirements, and puts forward the challenges that 5G network slicing technology in smart grid may face in the future, aiming at providing theoretical basis for the further development of 5G technology and promoting the continuous development of 5G smart grid application.
Analysis of Serious Deformation of Cavitation Tubing in Salt Cavern Gas Storage in Jianghan Oilfield
Authors: Wei Hu , Shigang Fan , Chenglin Wang , Guohai Yuan 
Published: June 2021

Abstract
Jianghan Oilfield salt cavern gas storage is characterized by depth, high temperature and high pressure. At present, the main problem of Jianghan Oilfield salt cavern gas storage is that in the process of cavitation, the frequent bending deformation at the end of the cavitation tubing string leads to the difficulty of operating the tubing string, which extends the cavitation period and affects the production of the gas storage. The problem of tubing string in the cavitation of salt cavern gas storage in Jianghan Oilfield was counted, and the causes of tubing string bending were analyzed from the aspects of salt layer geological characteristics, tubing string mechanics, fluid mechanics, etc. It was concluded that the injection rate was higher than the critical liquid carrying flow rate, leading to tubing string instability and deformation, which provided theoretical reference for the construction of salt cavern gas storage.
Refined Calculation and Demonstration for Sunshine Temperature Difference Effect of Long Span Continuous Beam
Authors: Peiliang Jia 
Published: June 2021

Abstract
The continuous rigid frame bridge of Jiagai River Bridge is (100 + 192 + 100) m, with a main span of 192m, which will break the historical record of 176m of Chaoyang Jialing River Bridge and become the largest continuous rigid frame bridge of single track railway in China. The single track railway continuous rigid frame bridge has the characteristics of large load, poor stability and high prestress requirements. The temperature difference in sunlight will produce temperature deformation and emperature stress in the concrete box girder bridge, which will affect the linear monitoring measurement results. In particular, the sunshine temperature difference will produce nonlinear temperature gradient in the vertical and transverse direction of the cross section of the statically indeterminate box girder bridge, resulting in the generation of temperature self stress and temperature secondary stress. This kind of temperature stress is often large, which leads to the cracking of concrete and even endangers the normal operation in the future. This paper studies the calculation of temperature field, temperature stress and temperature deformation of concrete box girder caused by solar radiation, and compiles a program to realize the visual calculation of sunshine temperature effect.
Research on all-optical redundancy networks underground coal mines
Authors: Zhang JinHao , Lin Yin , Chen Min 
Published: June 2021

Abstract
In view of the serious environmental interference of coal mine underground, the inconvenient power supply of underground equipment and the existence of passive serial series series number of existing F5G underground network network, explore a new coal mine underground all-optical network redundancy technology networking scheme, realize the multi-stage series of passive light branches of the mine, Solve the problem of low number of underground optical branches in series and anti-interference of communication. Based on the principle of all-optical network network, this paper expounds the redundancy protection mechanism of all-optical network group, and designs a wide-ranging coverage scheme of fiber optic whole mine through precision calculation and analysis. Through laboratory verification and coal mine roadway simulation experimental data show that the all-optical redundancy technology network scheme can realize the underground passive light multi-stage serialization, while ensuring the priority and reliability of underground gas system. At the same time, the priority and reliability of the underground gas system are guaranteed; the scheme parameter comparison table is suitable for various types of coal mines and can be used as a reference for coal mine users in the construction of underground all-optical networks.
Resistivity Measurements to Study the Early Chemical and Autogenous Shrinkage of a Binary Alkali-activated Slag-metakaolin System
Authors: Zhu Chunyan , Zhou Yu , Guo Yaoxiang , Wen Zhiwen , Zhang Liangwei , Wang Zhihan , Fang Yuan , Long Wujian 
Published: June 2021

Abstract
Alkali-activated slag-metakaolin (AASM) has a lower shrinkage than alkali-activated slag, but its complex shrinkage behaviour remains elusive. In this paper, resistivity measurements were used to monitor the early chemical shrinkage and autogenous shrinkage evolution of AASM (containing 10%, 30%, 50%, or 70% metakaolin). The MK content greatly affected the development of autogenous shrinkage of AASM, and the specimens with 50% MK showed the lowest autogenous shrinkage of 49%. The presence of MK delayed the formation of calcium aluminosilicate hydrate (C-A-S-H) gels (the activation products of slag), thus mitigating autogenous shrinkage. A functional relationship between early autogenous shrinkage and resistivity was established, which showed that resistivity can be used to evaluate and predict the early autogenous shrinkage of AASM.
A New Method of Determining the Lower Limit of Pore in Saturated Kerosene
Authors: Zhao Weijun , Yang Xinying , Huang Weidong , Wang Zongcheng , Li Ping , Nie Yanbo , Luo Yinghuan 
Published: June 2021

Abstract
To determine the lower limit of the pore size of saturated kerosene indirectly for testing porosity, the combined total porosity was first calculated using carbon dioxide adsorption, nitrogen adsorption, and mercury intrusion tests. Then the combined porosity is gradually accumulated from large pores to tiny pores. When the accumulation is equal to the total kerosene porosity, the corresponding pore diameter is a minor pore diameter measured by kerosene porosity. A total of 5 samples were collected this time. The lower limit of kerosene porosity was determined as 3.1nm, which shows that the kerosene saturation method can describe most of the shale’s mesopores and macropores. This method can also be extended to determine the lower limit of the pore size by the porosity method, such as helium.
The Ionothermal Synthesis of Dihydrophenazine-based Covalent Triazine Frameworks for Supercapacitors
Authors: Liu Caixia , Li Pengfei 
Published: June 2021

Abstract
The dihydrophenazine-based covalent triazine frameworks (CTFs) were prepared via a zinc chloride mediated ionothermal synthesis. The obtained dihydrophenazine-based CTFs exhibit high surface areas of up to 1213 m2/g with a high nitrogen content of 8.35 wt%. Electrochemcial test of dihydrophenazine-based CTFs shows a high specific capacity of 256 F/g in an aqueous electrolyte at a current density of 0.8 A/g with excellent rate capability and cycling stability.