bluuebunny/crossref_metadata_2025_split huggingface dataset:
Research and Analysis of Nonlinear Predictive Model Identification Control Based on Pumped Storage Unit in Construction Site
Authors: Gou Xiaoping , Zhang Wanjun , Zhang Feng , Zhang Jingxuan , Zhang Jingyi , Zhang Jingyan 
Published: September 2020

Abstract
In this paper, a generalized predictive control method for the speed control system of pumped storage units is proposed, which is suitable for different working conditions of the power generation direction of pumped storage units. Through a combination of mechanism modeling and data-driven model order and parameter reduction strategy to determine the time delay and order of the instantaneous linear prediction model of the speed control system of pumped storage unit. According to the operation state and control target of the unit, the design scheme of the generalized predictive control frequency regulation mode and the opening regulation mode are given respectively, and the dynamic analysis of the control process under different operation conditions is carried out according to the actual parameters of the speed regulation system of a single 300MW pumped storage unit of a pumped storage power station in Central China, which verifies the effectiveness of the control method.
Discussion on the application of energy microgrid integrated with blockchain technology
Authors: Zhou Yuangao 
Published: September 2020

Abstract
Based on the technical characteristics of the blockchain, the credibility, fit, architecture, and main business models of the data processing of the energy microgrid integrated with the blockchain technology are analyzed and discussed. It shows the feasibility and necessity of implementation, and puts forward a targeted solution to the current situation. Blockchain is very promising to promote the development of energy microgrid.
Crosstalk Analysis and Suppression of GaN Driving Circuit in Bridge Converter
Authors: Zhou Yang , Yang Li , Gong Xiang 
Published: September 2020

Abstract
Enhancement mode Gallium-Nitride power transistors (GaN HEMT) have emerged as promising devices for high frequency, high efficiency and high power density switch m ode power supplies. However, when GaN device works in high frequency, the dv/dt and di/dt slopes are increased due to stray inductances and parasitic capacitances, which leads to oscillations and overshoots in gate-source voltage and affect the stability of driving circuits. Especially in the phase-bridge circuit, the crosstalk between the upper and lower switch seriously limits the performance of the device. In order to solve the short circuit problem of bridge arms generated by oscillation and crosstalk, an improved design of gate driving circuit was proposed, which could eliminate the parasitic oscillation and voltage spikes, suppress crosstalk and higher harmonics effectively. In addition, A double pulse test prototype is built and the simulation and experimental results verify the effectiveness of this driving circuit.
Study of A 28-GHz Tree-shaped Fractal Millimeter Wave Antenna
Authors: Li Wenpe , He Wei , Lai Zhongrong , Liu Siyu 
Published: September 2020

Abstract
In this study, a tree-shaped fractal antenna is designed. The antenna uses a finite ground plane with a rectangular structure. By increasing the number of iterations of the tree fractal structure, optimizing the size of the priority ground plane and the size of the dielectric substrate, the antenna can obtain good impedance matching. And through electromagnetic simulation of HFSS. The antenna’s working frequency band is 26GHz-30.2GHz (relative bandwidth is 15%), and the maximum gain is 4.72dB at the center frequency of 28GHz, which can be used for future 5G communication.
Research on interconnection power system Construction of traditional energy Control Structure
Authors: Liu Min , Zhang Yanxi , Yan Dongwen 
Published: September 2020

Abstract
With the increasing proportion of new energy in the power system energy. It has become an inevitable trend for new energy grid connected to participate in power system frequency modulation. As the representative energy of new energy, wind power has become the research focus of frequency modulation with traditional energy in recent years. In order to realize the frequency stability of power system, the load frequency control technology is used for power system frequency modulation at this stage. That is to say, in the case of any load disturbance, the power system can realize the load disturbance following the random change of power generation, so as to maintain the frequency deviation within a allowable range (±0.2Hz). Based on this purpose, this design starts from the load frequency control model of conventional units, and first does not consider the role of wind power to build the control structure of traditional energy. In order to facilitate the study of the design of traditional energy units are selected thermal power units. Starting from the establishment of power system frequency response model, we can understand the composition of traditional energy power system frequency response model and the structural characteristics of multi regional interconnected power system. The characteristics of load frequency control module of governor, turbine, generator, load and other basic conventional units are analyzed, and the related transfer function is listed. After the completion of the basic module, the mathematical model of traditional energy single area and traditional energy two areas is built. At the same time, when considering the construction of two regional interconnected thermal power units, we should also pay attention to the characteristic analysis of tie line power and regional control deviation.
Energy Efficiency Evaluation Method of Customer-side Integrated Energy System
Authors: Wang Hongyan , Liu Qian , Niu Ze 
Published: September 2020

Abstract
At present, the integrated energy efficiency evaluation (EEE) system based on subsystems is not yet mature. Combining the characteristics of modularization and decentralization of the integrated energy system (IES), based on the membership function of fuzzy theory and the AHP method, this paper constructs a set of customer-side comprehensive EEE system, which covering all kinds of energy sources including electricity, gas, cooling, heat, water and so on. On this basis, the method of comprehensive energy efficiency evaluation index (EEEI) based on subsystem is summarized which can meet the requirements of breadth and depth of comprehensive EEE and provide decision basis for system design and operation.
Research on Application of Three-Dimensional Design Standardization and Three-Dimensional Design Review Method for Transmission and Transformation Project
Authors: Lan Feng , Lu Fumu , Qiu Xuanyu 
Published: September 2020

Abstract
This paper systematically introduces a three-dimensional transmission and transformation engineering auxiliary design software, and analyses its function, structure and technical characteristics. The main feature of this software is that it has a relatively powerful three-dimensional auxiliary design capability, which can help designers quickly generate a three-dimensional model of power transmission and transformation projects. The three-dimensional model can not only give the project investor an overall image and visual effect of the project during the design bidding stage, but also serve as a reference for the design of the relevant drawings in the later period. At the same time, after having an accurate model, the designer can verify the correctness and reliability of the design, can directly obtain some spatial information, and can dynamically modify, adjust and verify the model as needed. The software also provides related information statistics, query, modification, retrieval and other functions, and provides corresponding drawing management tools according to drawing management specifications. (With the actual application of the system, the design level and technical capabilities of designers will be further improved to ensure that the design work can be completed with high quality and efficiency.
Research on General Model System for Three-Dimensional Design of Transmission and Transformation Project Under Smart Grid Modeling Standards
Authors: Zhang Shengxi , Lan Feng , Li Caihong 
Published: September 2020

Abstract
The traditional design method of power transmission and transformation project based on knowledge model has the problems of rough construction quality and low economic benefit of power transmission and transformation project. Therefore, the design method of power transmission and transformation engineering based on three-dimensional digital intelligent technology is proposed, and the working mode of intelligent power transmission and transformation engineering is designed. Based on this working mode, a three-dimensional collaborative design process for power transmission and transformation engineering is obtained. The design platform is built to shorten the design cycle of power transmission and transformation projects, so that the efficiency of power transmission and transformation engineering design is greatly improved. Through the digital handover of the three-dimensional collaborative database, the transmission and transformation engineering information is sorted and sorted, so that multiple people can view and modify the information at the same time, and the three-dimensional verification process of the transmission and transformation project is designed to achieve a safe distance and collision to the transmission and transformation project. Testing to improve the accuracy of engineering design. Experimental results show that the proposed method can improve the design efficiency and quality of power transmission and transformation projects, and has a higher social and economic evaluation effect.
Research on Echelon Utilization of Lithium Battery
Authors: Li Zehan , Yin Kun , Liu Zhenxing , Song Jialiang , Chen Zhongkai 
Published: September 2020

Abstract
This thesis finds a form of cascade use for retired lithium batteries by analysis, tests, screens and reorganizes retired lithium batteries into new standard energy storage modules, which are successfully applied to stadium scooters. The results show that this form can effectively extend the life cycle of lithium batteries.
Application of improved GM (1, m) model for transformer faults prediction
Authors: Chen Guoping , Shi Yujie , She Haizhi , Qin Yanjun , Zhou Xiaohong , Qi Zhengdong , Guo Wenke 
Published: September 2020

Abstract
The traditional GM (1, m) prediction model is improved, the original data sequence is transformed, and its data generation method is changed, so that the transformed data sequence has a more approximate exponential change property, which meets the gray model’s smoothness Requirements, to be able to predict fluctuation series. At the same time, in order to improve the prediction accuracy of the model, the model background value is optimized, so that the prediction accuracy of the model is greatly improved. The improved GM (1,7) prediction model is used to predict the volume fraction of various gas characteristics of the transformer. Compared with the traditional GM (1,1) and GM (1,7) prediction results, it has a good approximation to the original data sequence the effect shows the effectiveness of the model.
Research Review of Flywheel Energy Storage Technology
Authors: Jing Lili , Xue Xiaochuan , Guo Xiaoxia 
Published: September 2020

Abstract
to study the flywheel energy storage technology, a great number of papers about the researches on and development of high-speed flywheel energy storage system in China and overseas were reviewed and summarized. The technology started early in foreign countries. It developed rapidly and has formed a certain series of products today, while in China, the research on this technology is quite laggard and still in the experimenting stage. Now there is no flywheel energy storage product which can be applied in practice in quantity. Therefore, the research on a new type of efficient and low power consumption energy storage flywheel is of great value and significance today.
Research on Foundation Type Selection of Overhead Transmission Lines under Different Environmental Conditions
Authors: Gan Jingshuang , Li Lingyun 
Published: September 2020

Abstract
The foundation engineering is an important part of the transmission line engineering system, which has an direct impact on the safe operation of the line project. According to different topography and geological conditions, this article draws a conclusion of foundation type that are more in line with technical conditions and actual conditions under different environmental conditions through comparing and studying various applicable foundations. It aims to provide certain reference significance for the selection of transmission line foundations.
Benefit evaluation of pumped storage power station in electricity marketization environment
Authors: Huang Xiaoying , Wang Qingran , Wu Haoyu , Yang Yong , Xu Delong , Li Xuejiao , Jiang Weihai , Li Bo 
Published: September 2020

Abstract
At present, pumped storage power station based on two-part system electricity price cannot effectively recover the cost in China, so it has become one of the development directions for the pumped storage power station to enter the electricity market and obtain benefits. Combined with the background of electricity marketization, this paper analyses the benefits of pumped storage energy in electricity market from two aspects: the electric energy market and the auxiliary service market, based on the functions of peak load shifting, peak-regulating, frequency modulation and phase modulation provided by pumped storage power stations. Efficiency analysis based on pump storage power station, an economic benefit, environmental benefit and social benefit for the primary index is established under electricity market environment benefit evaluation system of pumped storage power station, based on the G1 - benefit evaluation model of entropy weight method, taking Tongbai pumped storage power station as an example to carry on the comprehensive evaluation, the evaluating model is verified to have been put into production of pump storage power station in power market yield were analysed, and it provides the direction for future development of China pump storage power station is proposed.
Research on the Technical Reliability of the Overhead Transmission Lines Based on the Life Cycle Technology
Authors: Gan Jingshuang , Li Lingyun 
Published: September 2020

Abstract
Based on the actual operating conditions of overhead transmission line, the safety and reliability of overhead transmission line is researched using the life cycle technology. Taking a 220kV overhead transmission line as an example, various parameters at different life stages are measured and analyzed, and finally the technical scheme most conducive to ensuring safe and reliable operation of the overhead transmission line is obtained. The research results provide a reference for the power company to ensure the safety of the power system operation and stimulate the innovation of power technology.
Sensitivity comparison of impedance sensors with different coil arrangements
Authors: Ma Laihao , Zhang Hongpeng , Zeng Lin , Shi Haotian , Bai Chenzhao , Zhao Xupeng 
Published: September 2020

Abstract
Two inductance-capacitance dual mode sensors based on different arrangement of dual coil and microchannel for oil multi-contaminant detection are proposed. The inductance detection model of metal particles and capacitance detection model of non-metal particles are constructed theoretically. The experimental results show that the two dual mode sensors both can realize inductance detection of iron and copper particles and capacitance detection of water droplets and air bubbles in oil. The detection sensitivity can be effectively improved by placing the microchannel on the edge of coil inner hole. The sensor of dual coils perpendicular to microchannel has more sensitive in inductance detection and the sensor of dual coils parallel to microchannel has more sensitive in capacitance detection. This research is helpful to improve the design and sensitivity of oil multi-contaminant detection sensor, and is of great significance to the realization of health monitoring and fault diagnosis of machinery.
The review of the degradation mechanism of the catalyst layer of membrane electrode assembly in the proton exchange membrane fuel cell
Authors: Xu Ke , Zhao Xueying , Hu Xiao , Guo Zhiyuan , Ye Qing , Li Lu , Song Jie , Song Pengxiang 
Published: September 2020

Abstract
With the rapid depletion of fossil reserves, unstable prices of fossil commodities and the negative effect of fossil fuel on the environment, the demand for clean energy power generation increases. Proton exchange membrane (PEM) fuel cells are a prominent technology for power generation in a variety of applications such as fuel cell vehicles, portable power supplies, stationary power stations and submarines. With their high power density, low emission, low operating temperature, high efficiency, noiseless operation and simplicity of design and operation, PEM fuel cells have a number of attractive advantages over traditional power sources. In this paper, the degradation mechanism of the catalyst layer of the membrane electrode assembly and the core component of the proton exchange membrane fuel cell are summarized. Besides, the degradation mechanism of the Pt-based catalyst, carbon support and Nafion ionomer are obtained. Considering the agglomeration and growth of Pt catalyst, Pt loss and migration, active site pollution and other micro processes, the degradation of catalyst is analyzed in depth. Furthermore, the carbon corrosion process is studied under the normal operation, fuel starvation of the anode and partial hydrogen coverage of the anode processes. In addition, the chemical degradation of Nafion ionomer and the effect of the length of the side chain to the electrode structure are discussed. Eventually, the improved strategies for the failure of the catalyst layer of the membrane electrode assembly are proposed, in the hope to provide useful guidance for the development of long-life proton exchange membrane fuel cells in commercialization.
Research on Green Logistics Energy-Saving and Emission-Reduction Vehicle Distribution System under Low Carbon Economy
Authors: Cao Boyang 
Published: September 2020

Abstract
Logistics is called “the source of the third profit”, and it has attracted more and more attention from people, and it has increasingly become the basic industry of the national economy. Distribution is a special and comprehensive form of activity in the logistics system, which is a close combination of logistics and business flow. Distribution is the process of allocating goods at the distribution center or other logistics nodes according to the requirements of the customer and handing them to the customer in the most reasonable way. After the economic work conference of the 18th National Congress of the Communist Party of China, the government and enterprises put green and low carbon in a more important position, and industries such as urban construction and traditional manufacturing need to think about how to become greener, especially for the logistics and transportation industry. Based on this research background, the paper developed an intelligent vehicle scheduling system. Based on the summarization of a large number of applications at home and abroad, from the two aspects of the vehicle routing problem model and solution algorithm, the domestic and foreign research status of the vehicle routing problem is deeply analysed. According to different factors, the vehicle routing problem is based on the basic model and the derivative model. To classify and solve the current research hot issues-open vehicle routing problem and dynamic network vehicle routing problem. The system includes vehicle scheduling, management of carrier bills, electronic map display, basic information maintenance and other functions.
Evaluation of cable moisture-proof measures based on AHP
Authors: Luan Le , Wang Hongbin , Peng Heping 
Published: September 2020

Abstract
With the widespread use of cross-linked polyethylene (XLPE) cables in the power system, the problem of aging due to moisture ingress of XLPE cables is becoming increasingly prominent. Under the humid laying environment, the XLPE cable sheath is easy to damage. The storage seal is improper or the water fill in the cable channel causes the XLPE cable to be immersed for a long time, which will seriously affect the insulation and service life of the cable. Therefore, it is important to establish a systematic evaluation system for moisture-proof measures of XLPE cables. This paper analyzes the reasons for the moisture of XLPE cables and the common moisture-proof measures. Based on the AHP method, comprehensively considers the impact of economy, technicality, applicability and feasibility, and establishes an evaluation system of cable moisture-proof measures. In the evaluation system, the criteria layer is subdivided into seven secondary indicators. For the plan layer, comprehensively consider the XLPE cable structure, cable materials, cable accessories and laying environment and other factors to select the XLPE cable moisture-proof measures for comparison. This paper uses AHP to figure out the comprehensive weight of each moisture-proof measure to the target layer, and the consistency test was conducted to prove the validity. The results have shown that the XLPE cable using water treeing resistant material in the plan layer has the best comprehensive effect. This paper provides a systematic and comprehensive evaluation system for future researches on cable moisture-proof measures, and the research results provide reference value for cable design and selection in the hot and humid areas.
Research on Multi-Objective Optimal Dispatch of Microgrid Containing Electric Vehicles Based on Improved NSGA-II Algorithm
Authors: Liu Yang , Liu Tianyu 
Published: September 2020

Abstract
In this society where resources are increasingly scarce, the microgrid is developing rapidly in anticipation, due to the random energy storage characteristics of electric vehicles, the integration of electric vehicles in the microgrid is of great significance to suppress the volatility of new energy. In this paper, a microgrid model of renewable energy, energy storage equipment, micro-turbine and electric vehicles is established, and the impact of time-sharing electricity prices on system operation is fully considered., With the operating cost of the microgrid system and the cost of environmental pollution control as the goal, use the improved NSGA-II to solve. The effectiveness of the proposed microgrid optimization model is verified through analysis of examples, and compared with the standard genetic algorithm algorithm to solve the model. The results show that the improved algorithm can effectively improve the algorithm’s operation efficiency and optimization ability, and in the microgrid Access to electric vehicles can also reduce environmental pollution and reduce the cost of operating microgrid systems.
Status and development of flexible wing aircraft
Authors: Ao Yuntu , Ma Liangzheng , Huang Wei , Li Yu , Wang Ying 
Published: September 2020

Abstract
The flexible wing aircraft is derived from the flexible wing and can be divided into inflatable and parafoil type according to its wing type. The flexible wing aircraft has a broad application in both aerospace, missiles and unmanned aerial vehicles. This paper summarizes the current status and application prospect of flexible wing aircraft by summarizing the research of domestic and foreign scholars. Finally, this paper is summarized and the outlook for development is presented.