bluuebunny/crossref_metadata_2025_split huggingface dataset:
The potential of load identification and regulation in the textile industry
Authors: Cai Yuqing , Zhu Lingling , Ye Qiang , Hu Zeyan , Chen Wuxiao , Zhang Chenhan 
Published: September 2023

Abstract
Firstly, this paper introduces the daily load characteristics and annual load characteristics of the textile industry and points out that the electricity load of the textile industry shows obvious seasonal changes. There is a certain degree of randomness. Then, this paper analyzes the behavior characteristics of electricity consumption in the textile industry, including the behavior mode of electricity consumption and the characteristics of electric equipment. It points out that the textile industry has a certain potential and space in energy utilization. Finally, this paper focuses on the load regulation situation of the textile industry and summarizes the load proportion, regulation mode, regulation time, and adjustable load proportion of the textile industry. This paper studies and discusses the energy utilization and load control of the textile industry, which has certain theoretical and practical significance.
Analysis of the Rectification of Electromagnetic Radiated Emission Performance of a Plug-in Hybrid Mini Truck
Authors: Guo Jiajia , Ren Guiying , Wang Dongsheng , Wang Chong , Wang Zilong , Zhao Mingli , Sun Yanan , Hang Zhou 
Published: September 2023

Abstract
The EMC radiated emission performance of the plug-in hybrid mini truck shall meet the relevant requirements of national standards GB/T 18387-2017 and GB 34660-2017 on the radiation of vehicles. The plug-in hybrid mini truck is placed in a 10 m semi-anechoic chamber for the whole vehicle as required by the standards. By activating different working conditions of the vehicle, various possible situations occurring in the normal driving process of the vehicle are simulated. When a plug-in hybrid mini truck underwent the above two tests, the result of radiated emission test was found to exceed the limit value of the standard. The relevant problem electrical parts are identified by analyzing the radiated emission data of the vehicle, conducting near-field scanning of the vehicle, and locating the over-standard problem points. Through rectification and optimization, the plug-in hybrid mini truck fulfilled the relevant requirements of national standards GB/T 18387-2017 and GB 34660-2017 on the radiation of vehicles.
Evaluation of Energy Storage Station Based on the Optimal Weighting Method
Authors: Yang Zaixin , A Minfu , Yin Baiqing 
Published: September 2023

Abstract
The energy storage station is playing an increasingly important role in supporting new power systems. How to scientifically and effectively evaluate the application effect of energy storage stations is an urgent problem to be solved. In this study, a multi-indicator evaluation model for energy storage stations is established. An improved fuzzy comprehensive assessment (FCA) with optimal weight is applied to actual energy storage stations. Using the energy storage station monitoring platform, comprehensive evaluation scores of demonstrated energy storage stations are obtained. The support effect of energy storage stations on the power grid is evaluated from three aspects: performance, operational reliability, and energy efficiency. The higher the evaluation score, the stronger the energy storage regulation ability, and the more significant the active support to the power grid.
Power distribution network reliability calculation method based on collective multi-label classifier and energy entropy
Authors: Huang Yuchun , Zhang Daolu , Liu Minghao , Zhang Yanyu , Zhang Bin 
Published: September 2023

Abstract
Reliable power supply from the grid is vital to life and work, production activities, and national security. At present, the simulation calculation method of distribution network reliability needs a lot of time. In view of this shortcoming, this paper proposes a multi-label classifier model using the importance sampling method, which can shorten the calculation time by reasonably extracting samples. At the same time, the multi-label classifier can evaluate the failure probability of the electric power distribution network at the bus level. Finally, we use the IEEE RTS model to test the proposed method, and the effectiveness of the proposed method is verified.
Product design innovation based on the functional characteristics of the eight-masted windmill
Authors: Zhou Feng , Zhao Xuegong , Wang Chenbin , Zhang Liping 
Published: September 2023

Abstract
To catch and research the functional characteristics of the eight-masted vertical windmill and its automatic readjustment of sail angle in the Lixia River area of northern Jiangsu Province, to permit this intangible cultural heritage a new practical meaning in modern tourism through the innovative design of the sail structure of the eight-masted windmill, and to come up with a portable folding windmill product suitable for outdoor sports enthusiasts. Firstly, we spell out the history of the eight-masted windmill and its “trotting horse lamp” structure through literature research and draw the working principle of the eight-masted windmill in operation, and combine the eight-masted windmill with power generation device by converting wind energy into electricity. The design direction was to design a lightweight, breeze start, and stable power output windmill generator; secondly, the sketch of the windmill main shaft structure and scheme were selected, and the integrated form of the fan blade and the mast was selected as the sketch scheme; finally, the model experiment of the prototype of the folding scheme was conducted, and the absolute pressure difference between blades was analyzed by hydrodynamics to determine that the windmill can be used to generate electricity. After verifying its feasibility, the portable folding generator was modeled in 3D by MCAD, and make a physical model of the generator was made in a reduced scale of 1:2.5. Through the innovative design of the eight-masted windmill, it is made to serve the production life of modern society.
Numerical Simulation of Thermo-hydraulic Behaviour of Shell and Tube Heat Exchanger Equipped with Segmental Baffle and Helical Baffle
Authors: Hu Bao , Liu Hongjiao , Jin Mei 
Published: September 2023

Abstract
The baffle type and structure are critical to enhancing the comprehensive thermo-hydraulic behavior of shell-and-tube heat exchangers (STHX). In the study, Solidworks software was used to establish three-dimensional mesh models of STHX equipped with the segmental baffle and the continuous helical baffle, respectively. ANSYS software was adopted to study the effects of the baffle type and the baffle geometric parameters on the thermo-hydraulic characteristic of STHXs using the pressure drop of the shell side, the coefficient of heat transfer and isobaric JFP factor as the evaluation characteristics. For segmental baffles, better thermo-hydraulic performance could be obtained with a baffle spacing of 200 mm and a gap height of 0.4 D. For helical baffles, an optimized thermo-hydraulic performance could be obtained with a baffle pitch of 150 mm. By comparing the comprehensive thermo-hydraulic performances of STHXs equipped with two different baffles, it could be concluded that the isobaric JFP
factor of STHX equipped with the helical baffle was 1.18 times that of STHX equipped with the segmental baffle under the different suitable flow rate.
Heat Transfer Enhancement Analysis of Collector Tube in LFR-CSP
Authors: Xu Jianwei , Chen Kang , Chen Pengfei , Niu Dongsheng , Wang Xiao 
Published: September 2023

Abstract
The heat transfer characteristics of the collector tube is one of the cores of a linear Fresnel reflector-solar thermal power generation system (LFR-CSP). In this paper, the heat transfer model of reflective linear Fresnel single-tube compound parabolic collector (CPC) is established. In light of the normal operating conditions during the day, it is found that the direct normal irradiation (DNI) and loop length exert significant effects on the heat collection and thermal loss performance of the linear Fresnel reflector. With the increase of DNI and unit length, the outlet temperature and heat collection capacity of the collector loop increase significantly. Because of the increase of DNI, the increase of collector heat is higher than that of thermal loss. However, the thermal loss per unit length increases correspondingly with the increase in loop length, and the heat collection efficiency decreases. Ambient temperature and wind velocity are not the main factors affecting the heat collection and thermal loss performance of the linear Fresnel reflector under the prerequisite of a good vacuum degree of the collector tube.
Heat Transfer Performance of Water-cooled Heat Sink for I&C System Controller Chip in Nuclear Power Plant
Authors: Fei Guobiao , Xiao Li 
Published: September 2023

Abstract
To improve the heat dissipation reliability of the nuclear power control system chip, the structure of its water-cooled heat sink is compared and analyzed. Three schemes of water-cooled heat sinks are proposed, and CFD analyzes the heat dissipation performance of the heat sink. The simulation data of the heat transfer coefficient, pressure loss, and heat sink comprehensive coefficient are compared. The results show that the average temperature of the bottom surface of the three heat sinks tends to be flat with the flow velocity increase, and the heat dissipation coefficient Nu is also the same. The S-type heat sink has a higher heat transfer coefficient and lower average bottom temperature. The pressure loss of the S-type heat sink is much higher than that of the other two schemes with the increased flow rate, and the system resistance is large. By calculating the comprehensive coefficient of the heat dissipation process of the three heat sinks and considering the heat dissipation capacity and other factors, it is considered that the circular fin heat sink can be the optimal solution.
Middleware Key Technologies Supporting Panoramic Display of Low-voltage Distribution Substation Area Operation
Authors: Shi Zhan , Deng Xiaozhi , Li Xingnan , Yang Zhihua 
Published: September 2023

Abstract
A panoramic display system for low-voltage distribution substation areas is built in this paper to meet the visual monitoring requirements of equipment operation status in low-voltage distribution substation areas. Aiming at the characteristics of complicated data structure, decentralized deployment, and equipment isomerization of power equipment, a middleware for panoramic display system of low-voltage distribution substation area operation is designed. The residual search method realizes the data identification to give a timely warning. Heterogeneous data is clustered by the K-means method. Simulation results verify the better performance of the proposed middleware for low-voltage substation operation.
Design of complex vector regulator for Linear Induction Motor
Authors: Guo Han 
Published: September 2023

Abstract
The edge-end effect in the operation of a Linear Induction Motor (LIM) will lead to great changes in motor parameters, and the d and q axes of LIM have cross-coupling terms. The PI regulator usually used in traditional vector control has a high requirement on the accuracy of parameters, and the PI regulator cannot realize the complete axis decoupling control of d and q, which will lead to the decline of the control accuracy. In this paper, the mathematical model of the LIM considering side effects is adopted, and a complex vector regulator is used to replace the traditional PI regulator, which realizes decoupling control of the d-q axes and eliminates the influence of coupling terms. Finally, this paper is verified on dSPACE semi-physical platform. Results show that the decoupling effect of d-q axes using complex vector regulator is due to the PI regulator.
Site assessment of transformer state based on individual Raman spectrum equipment
Authors: Fang Jian , Lin Xiang , Zhou Fengxiang , Tian Yan , Zhang Min , Li Kairan , Sun Jian 
Published: September 2023

Abstract
The transformer is the pivotal equipment in the power system, and its operating conditions are critical to the entire power grid, so it is important to evaluate its state in a timely manner. A method of site assessment of transformer state by using individual Raman spectrum equipment was presented in this paper. First, transformer oil samples containing different health states were collected by accelerated thermal aging tests and field sampling. The oil samples were then subjected to Raman testing and the Raman spectral features that can reflect the transformer state were extracted based on multidimensional scaling analysis (MDS). The evaluation model of transformer condition based on Raman spectra of insulating oil was constructed by random forest (RF), and the evaluation accuracy was higher than 90% for 20 actual samples. The results of this paper can provide technical support for intelligent operation and maintenance of substations.
The Simulation Analysis and Countermeasures of LCC-HVDC Complementary Resonance
Authors: Su Yinsheng , Liu Zhijiang , Chen Deyang , Xie Huifan , Lin Xuehua , Liu Hongtao 
Published: September 2023

Abstract
With the advancement of HVDC technology, the AC/DC hybrid grid has gradually emerged. The interaction and influence between AC and DC have become increasingly prominent, with the complementary resonance problem between AC and DC emerging as a hot research topic. In this paper, firstly, the phenomenon of LCC-HVDC complementary resonance is analyzed in both time and frequency domains, and a method for setting the saturation curve of the converter transformer in time domain simulation is proposed. Subsequently, targeting the actual LCC-HVDC complementary resonance, a hardware-in-loop simulation platform is constructed based on the actual HVDC control and protection equipment, and the actual field complementary resonance is reproduced. By simulating different operation modes, the operation range with a low risk of complementary resonance is determined. The influencing factors of complementary resonance are discussed and analyzed. Finally, through real-time simulation, the results show that the simulation method proposed in this article for setting the saturation curve of the converter transformer can accurately reflect the complementary resonance phenomenon between AC and DC caused by the saturation of the converter transformer. The countermeasures proposed in this article can effectively remove the complementary resonance between AC and DC and have been applied to the operation and control of actual power grids.
Research on 750kV Reactor Vibration Based on Electromagnetic-mechanical Field Coupling Finite Element Model
Authors: Wu Jianming , Min Yongzhi 
Published: September 2023

Abstract
The vibration signal characteristics of a 750kV shunt reactor with high voltage level and high vibration amplitude is one of the important indexes to evaluate the operating condition of the reactor. Since the high level of safe operation with Ultra-high voltage power equipment, it is challenging to collect long-term and extensive vibration signal data under safe operating conditions. This paper establishes the electromagnetic-mechanical field coupling finite element model (FEM) of a 750kV shunt reactor under a COMSOL open-source simulation environment. The resonance effect of magnetostriction of the iron core and the Maxwell forces between the iron core discs on the reactor structure is analyzed. The vibration distribution and typical frequency characteristics of each part of the 750kV shunt reactor are analyzed to provide a reference for the research of vibration fault diagnosis of Ultra-high shunt reactor.
Wireless Charging Docking Method for Multi-Sensor Integrated Logistics Robot in Substation
Authors: Pan Shuyan , Lu Zijian , Yan Yu , He Yang , Wang LiDe , Yan Kai , Zeng ZhaoQiang , Zhou YunYa 
Published: September 2023

Abstract
To avoid wasting time and manpower during the wireless charging docking process of logistics robots of different sizes and models in substations, which may affect the operational efficiency of the robots, this paper proposes a wireless charging docking method for multi-sensor integrated logistics robots in substations. First, multiple data signals, such as infrared sensors, pressure sensors, and ultrasonic sensors, are fused within the coarse positioning interval to obtain the length and width data of the robot. The robot is then controlled to travel along the X-axis towards the pre-set displacement sensor while maintaining its position relative to the wireless charging transmitter coil. In the fine positioning interval, the distance between the displacement sensor and the wireless charging transmitter coil is fixed. A coarse-precision positioning transformation method is used to decelerate the robot as it travels along the X-axis towards the pre-set displacement sensor, and the robot is parked at the wireless charging transmitter coil. Additionally, two sets of laser sensors are used to compare the lateral distance, which is half the difference between the charging station width and the robot width. This assists the robot in aligning along the Y-axis with the wireless charging transmitter coil and completing the wireless charging docking process. The experimental results show that the wireless charging system has superior docking time and stability compared to traditional docking methods. It is also compatible with multiple logistics robots of different sizes for wireless charging, with a docking error of less than 0.3%. This effectively improves the charging efficiency of robots in substations.
Value Gain-based Power Line Subcarrier Aggregation Method under Colored Noise
Authors: Shi Zhan , Deng Xiaozhi , Li Xingnan , Yang Zhihua , Qian Xin 
Published: September 2023

Abstract
With the large-scale power electronic equipment connected to the distribution network in the form of a new power system, the colored noise generated by power equipment will greatly reduce the efficiency of data transmission. The power line communication subcarrier grouping aggregation method features high transmission efficiency, excellent reliability, and high stability, which can improve the anti-interference and anti-noise performance of power line subcarriers. However, traditional subcarrier packet aggregation methods neglect the network topology changes and node service requirements, resulting in low adaptability of available subcarriers for power electronics scenarios. Therefore, we propose a value gain-based power line subcarrier aggregation method under colored noise. It can achieve adaptive colored noise awareness and dynamically optimize the subcarrier grouping aggregation. Simulation results demonstrate the excellent performance of the proposed algorithm in terms of availability and utilization efficiency.
Research on Voltage Flexibility Analysis and Governance Measures for Distribution Networks with High Proportion
Authors: Qi Xuesong , Wang Yuming , Sun Jia , Guo Tiebin , Li Zhenxin , Guan Xiaozhuo 
Published: September 2023

Abstract
In response to issues such as reduced voltage flexibility caused by the integration of a large number of high-proportion distributed photovoltaic (HPDP) and new energy electric vehicles (NEEV) into the distribution networks, this article proposes a method for evaluating the voltage flexibility (VF) of distributed PV distribution networks with high proportions and corresponding governance measures, which can effectively improve the VF of distribution networks and the absorption rate of photovoltaic (PV) systems. Firstly, we build an integrated system model for PV, electrochemical energy storage (EES), and distributed charging piles (DCP). Then, from a spatial perspective, a VF evaluation method for HPDP distribution networks is proposed. We analyze the impact of HPDP integration on the VF of each node in the distribution network and propose a governance measure that combines EES and DCP to enhance the VF of the distribution network. Finally, we take a typical 10 kV distribution network architecture in Jilin Province as an example for numerical analysis, so the effectiveness of the proposed method is verified.
Voltage Sag Source Location based on the Random Forest
Authors: Li Guoxin , Yu Zhiyuan , Zheng Bowen , Qi Biao , Su Ziqing , Wang Di 
Published: September 2023

Abstract
As one of the most prominent power quality problems in the power system, voltage transients threaten the use of many electrical and electronic devices. The rapid and accurate location of voltage drop sources can better define the responsibility between the power supply and the customer. It can also provide a reliable basis for future grid development planning. In this paper, a random forest model is set up to extract data from several electrical characteristics of voltage transients according to the classical voltage transient location method, which is used as training and test samples to input into the random forest model to achieve the upstream and downstream location of voltage transient sources. The random forest model is more accurate than the single decision tree model and the traditional upstream and downstream voltage drop location method. It is possible to determine which of the traditional judgments is more important under this model.
Active Disturbance rejection Hopf bifurcation suppression strategy based on DC microgrid DC-DC converter
Authors: Zhang Jiangong , Zhou Xuesong , Ma Youjie , Yuan Yecang , Duan Jianxiong , Wang Bo 
Published: September 2023

Abstract
To solve the problem that the output voltage of the Buck converter is easily affected by the change of system parameters, which reduces the energy transmission quality, a linear active disturbance rejection control strategy is proposed in this paper. Firstly, a discrete mathematical model is established to analyze that Hopf bifurcation disturbance is the cause of low-frequency oscillation of output voltage, and the existence of Hopf bifurcation disturbance is verified by simulation. Secondly, based on the theoretical analysis, the suppression effect of improving the error feedback control rate on Hopf bifurcation disturbance is designed. Moreover, the stability of the control strategy under Hopf bifurcation disturbance is analyzed by using frequency-domain theory. Finally, the suppression of Hopf bifurcation disturbance by the proposed control strategy and the traditional PI control strategy under different working conditions is compared by simulation analysis. The results show that the proposed linear active disturbance rejection control strategy can effectively suppress Hopf bifurcation disturbance and guarantee the performance of the Buck converter.
Comprehensive Condition-Information-Based Risk Assessment Method for Power Transmission Line
Authors: Wang Xiulong , Han Jingshan , Fan Wenqi , Jiang Hong , Guo Yifan , Peng Jiang , Ge Huangxu , Zhao Mengshi 
Published: September 2023

Abstract
The traditional risk assessment methods do not adequately consider the specific operating environment and characteristics of a power transmission line. Therefore, a new risk assessment method considering the information of comprehensive conditions is proposed in this paper. First, a risk assessment model is designed via statistical methods based on the information on preceding failures and defects of a power transmission line. Then, the quantization processes of the state parameters of components in the transmission line are formed to get the risk assessment results considering historical failure information. These results are of failure probability meaning. Finally, the influences of the operating age of equipment in the transmission line, the position of the transmission line, the service time, and the working condition of the grid on the risk value of the transmission line are analyzed. An empirical example shows that the suggested method can predict the risks of transmission lines and offers a way for maintenance scheduling and equipment replacement.