bluuebunny/crossref_metadata_2025_split huggingface dataset:
Feasibility Analysis of New Energy Development under the Asian-African-European Grid Interconnection Mode
Authors: Li Nana , Xie Guohui , Zhou Liansheng , Gan Zhiyong 
Published: July 2020

Abstract
The power area of Asia-Africa-European power transmission is rich in new energy resources such as wind resources and solar resources. West Asia and Africa have the potential to build large-scale renewable energy power generation bases. Based on the basic idea of Levelized Energy Cost Analysis (LCOE), this paper proposes an improved feasibility analysis model of new energy power generation technology, comprehensively considering the impact of policies, technology, politics and other factors on the cost of power generation. Feasibility of power transmission from large renewable energy bases in West Asia and Africa to Europe are measured under interregional grid interconnection. The results show that: the wind and solar power generation bases in West Asia and Africa are feasible of transferring electricity to Europe, and solar intercontinental interconnected transmission is more feasible than wind power.
Study on Cooling Water Source Seawater Filtration System of Nuclear Power Plant
Authors: Wu Qiaojun , He Guangchu , Wen Hongyong , Lin Xinpeng , He Shengliang , Chang Xincai 
Published: July 2020

Abstract
Littoral nuclear power plants at home and abroad use seawater as cooling source, which is the cooling system of nuclear island and conventional island. In recent years, many marine organisms such as jellyfish, phaeocystis globosa, hyacinth melon and prawn have affected the safety of water intake of nuclear power plant, and even led to the event of unit load reduction operation, machine trip and even reactor trip. In this paper, by analysing the existing problems of cold source seawater filtration system in nuclear power plant, the plane layout of water intake project is optimized, and the sea biological interception filtration system is established. Relying on the large offshore platform, online monitoring of the incoming sea creatures and the status of interceptors can realize the mechanized automation of intercepting and cleaning, and improve the reliability and efficiency of intercepting and cleaning. Reduce manual intervention and temporary network layout, reduce the risk of marine personnel operation, and improve the ability to withstand severe weather and large-scale outbreak of marine organisms. It ensures the safe operation of nuclear power plant.
Study on Engraving Resistance Characteristic of Band Based on Different Structure Parameters of Rifling
Authors: Liu Qi , Wang Yuwei , Li Ruijing , Zhu Wenfang , Zhao Na 
Published: July 2020

Abstract
The gun barrel working in complex environments is prone to damage, including the wear and ablation of the bore in the gun barrel. These changes cause changes in the rifling structure, which in turn affects the combustion law of gunpowder gas, which affects the pressure in the bore and changes the internal ballistics of the gun performance. This article takes a large caliber howitzer as the research object, considers the frictional force change during high-speed and high-pressure sliding, and also considers the energy conservation criterion during the engraving process. The initial ballistic equations are established during the initial movement period and Coupled solution with band engraving process. Considering the large deformation, high strain rate, temperature softening effect and cumulative damage effect, an explicit dynamic algorithm is used to compare the differences of the elastic band engraving process under different rifling structure parameters. The influence of different rifling structure parameters on the force state of the belt is analyzed. The influence of the main structural parameters of the engraving system on the belt engraving process is obtained. It provides a useful reference for the integrated analysis of the ammunition and the gun and the optimization of the barrel structure.
Online sealing of SF6 leak for Gas insulated switchgear
Authors: Du Baoshuai , Zhang Zhongwen , Qiao Yaxia , Suo Shuai , Luo Hongjian , Li Xinmei 
Published: July 2020

Abstract
SF6 gas leak is a common issue that needs to be addressed for Gas insulated switchgear (GIS). In this paper, typical gas leaking defects of GIS are described with the reason leading to them. A cost-effective online sealing technology based on adhesion and gas diversion is established and a case study is presented. Besides, an analytical model which can be used to predict the pressure evolution for the leaking component as well as in the sealing zone is proposed. It has been shown that this technique can be applied to sealing SF6 gas leak of GIS components with different shape and structure.
Model of Clean Energy Substitution Based on Energy Saving and Emission Reduction Targets
Authors: Zhao Ailin , Lan Mengxin , Zhang Xiaochun , Zeng Ming , Sun Chenjun 
Published: July 2020

Abstract
Under the situation of increasing air pollution and rapid development of clean energy, actively promoting energy substitution plays an important role in implementing energy strategy deployment and safeguarding energy security in China. This paper puts forward an energy substitution path considering the interaction between different energy sources, and establishes an energy alternative model based on energy saving and emission reduction targets. The proposed model takes the total amount of carbon emissions as the optimization target, and calculates and analyses the energy substitution path and the substitution space by considering the terminal energy consumption characteristics and the restriction of clean energy supply. Finally the paper makes instance calculations on the energy substitution space at the end of 13 th five-year plan and the 14 th five-year plan. The calculation result verifies the feasibility and superiority of the proposed model and solution method.
Analysis of electromagnetic force of damping winding in salient pole synchronous motor short circuit fault
Authors: Shen Yubo , Lan Sen , Zhang Dewen , Xu Minhu , Zhang Kexin , Liu Heqian , Kong Fanrong , Yu Hao 
Published: July 2020

Abstract
In recent ten years, China’s pumped storage power station has developed rapidly. As the core component of pumped storage unit, salient pole synchronous motor is very important to study its abnormal operation. In this paper, taking salient pole synchronous motor as the research object, the mathematical expressions of magnetomotive force for single-phase short circuit to ground, phase to phase short circuit and two-phase short circuit to ground are derived respectively, and the mathematical law of magnetomotive force for short circuit fault of salient pole synchronous motor under generating condition is revealed. It provides a basis for fault diagnosis, related research and calculation of salient pole synchronous motor.
Research on energy repetitive conversion of multi-micro grid system based on CVaR
Authors: Ma Jing , Meng Jinchuan , Feng Qiming , Feng Junlong , Liu Zhipeng , Liu Mingwei , Li Jinyu , Li Jiamei , Chen Xiaoke 
Published: July 2020

Abstract
the introduction of power to gas P2G (power to gas) equipment inside the micro grid strengthens the coupling between the power and natural gas network, reducing the phenomenon of wind and light abandoning, but also makes the renewable energy during the optimal scheduling of energy conversion, reducing energy efficiency, resulting in energy consumption. At the same time, with the aggregation of more and more microgrids in a certain region, a multi-microgrid system is formed, which has power interaction between microgrids. In this context, CVaR is introduced into the objective function of economic dispatching, and an optimal scheduling model considering the internal energy repeated conversion and power interaction between microgrids is established. This model takes into account the influence on the output of each equipment, and the optimal operation plan and optimal operating cost of the system are obtained. Finally, an example is given to verify the model, and the results show that the proposed optimal scheduling model can reduce the operating cost of the system, improve the energy efficiency and realize the energy optimization management of the whole system under the condition of improving the consumption of renewable energy.
Investigation on Exergy in The Process of Heat Exchanger Defrosting
Authors: Dong Wei , Li Yongcun 
Published: July 2020

Abstract
Excellent thermodynamics performance of heat exchangers plays a vital role in the effective operation of the air source heat pump (ASHP). However, the growing process of frost on the surfaces of the heat exchanger in winter could always affect the thermodynamic performance of the heat exchanger, which has attracted a great deal of attention over the past years. Moreover, the exergy analysis based on the second law of thermodynamics of the heat exchangers in the frosting condition has not been investigated before. In the present paper, exergy analysis of air-side heat exchanger was experimentally investigated. The experimental results show that exergy destruction would reach the minimum. The system has the lowest peak of energy utilization. This study is particularly useful for the design of optimal defrosting condition for heat exchangers of ASHP in winter.
Design and Research of 10KV Electronic Transformer Live Performance Evaluation Platform
Authors: Wang Yongchao , Zhang Wei , Li Na , Zhang Jiahai , Wang Guixian , Su Linhao , Gao Xinhang 
Published: July 2020

Abstract
Design and research a test platform suitable for 10KV electronic voltage transformer and 10KV electronic current transformer for long-term charging performance evaluation. The 10KV electronic transformer live test platform includes a primary boost device, a primary current boost device, a reference voltage transformer, a reference current transformer, a standard voltage transformer and a standard current transformer. The test circuit is designed to be three-phase. Under the condition that the system input voltage is 380V / 220V and the total input capacity is not greater than 100KVA, the auxiliary transformer and other auxiliary equipment are used to achieve long-term live operation and performance evaluation of the 10KV electronic transformer.
Application of acoustic emission technology in hydraulic pressure test of nuclear power plant
Authors: Zhang Zhenguo , Feng Huixing , Zhao Weihua , Li Maochao 
Published: July 2020

Abstract
Combined with the technical characteristics of hydraulic pressure test and acoustic emission technology in nuclear power station, this paper discusses the application status and technical features of acoustic emission technology in primary circuit hydraulic pressure test, vessel hydraulic pressure test, boundary valve leak detection of hydraulic pressure test and pipeline hydraulic pressure test in detail, and this paper also looks forward to the application prospect of acoustic emission technology in the field of hydraulic pressure test in nuclear power station.
Study on Operation of hybrid Wind-PV-ES power system In East China
Authors: Xu Lingjun , Zhong Na , Sang Da , Li Gang , Zhang Xiaohu 
Published: July 2020

Abstract
The rapid development of wind power and photovoltaic power in East China has gradually eroded the margin of safe operation of the power grid in recent years. A Wind-PV-ES power system evaluation model is established in this paper, It simulates the production process of Wind-PV-ES power system, and the reasonable capacity ratio of scenery of Wind and PV, the reasonable matching plan and coordinated operation of Wind-PV-ES were carried out. This model effectively evaluates the impact and benefits of Wind-PV-ES power system In East China. The ultimate aim is to provide references for future energy structure adjustment in East China.
Research on Application of Building Energy Saving and Emission Reduction Technology in Civil Engineering
Authors: Zhou Lili 
Published: July 2020

Abstract
In the context of energy saving and emission reduction concepts, the construction industry can effectively reuse the demolished waste building materials, which can promote the protection of China’s ecological environment, avoid the waste of construction resources and energy, and achieve global warming to reduce emissions, Energy saving and low consumption make a significant contribution, which can promote the improvement of China’s economic efficiency. Therefore, energy-saving and emission-reducing measures should be applied in civil engineering construction to promote green and sustainable development of civil engineering construction.
Design of Power Ripple Detection System for Carrier Module of Electric Energy Meter
Authors: Ou Xin , Wang Yiqun , Sun Hang , Hao Fengzhu , Han Peng , Pan Yi 
Published: July 2020

Abstract
DC power supply is usually obtained by rectification, filtering, voltage stabilization and other processes of municipal electricity. Due to the incomplete rectification or the existence of switching power supply, the output DC stability is superimposed with AC components, called ripple. The generation of ripple will bring noise, reduce the efficiency of power supply and affect the normal operation of the system. Strong ripple will cause the generation of surge voltage or current, and burn down electrical appliances and other equipment. This paper designs a detection device which can quickly and efficiently detect the ripple of carrier power supply. The experimental results show that the design system can help testers quickly judge whether the ripple of carrier module power supply meets the ripple voltage limit stipulated by Southern Power Grid Corporation, and is used to detect the ripple of power supply. Testing provides a new method of implementation.
Research on thermal load classification and safeguard implementation
Authors: Zheng Yeqiu , Li Qifen , Li Huayue , Yang Yongwen 
Published: July 2020

Abstract
Under the current economic development, the contradiction between the shortage of energy and the increasing energy demand of the society becomes more and more prominent, which brings great hidden danger to the energy security of our country. In order to reduce the loss caused by the interruption of power supply, energy management measures corresponding to the importance of user load need to be developed. However, the existing load classification system only involves electric power and does not clearly distinguish the importance of thermal and cooling loads, making it difficult to guarantee the safety of power supply of important cooling and thermal loads in emergency situations. With reference to the principle of classified safeguard of electric load, this paper proposed the idea of thermal load classification with the analysis of the personal injury, economic loss and political significance. It provides important ideas and methods for the construction of comprehensive classification and classification of energy and complete standard system of energy security.
The Method of Improving the Performance of Network Analysis Application for the Whole Power Grid
Authors: He Ming , Lu Yi , Li Jing , Zhang Guofang , Guo Guo 
Published: July 2020

Abstract
With the rapid development of UHV AC / DC hybrid power grid, it is required that the Network Analysis Application have the ability of unified analysis and high-performance computing. In this paper, the time-consuming analysis of each sub-function of Network Analysis Application is carried out to realize the performance bottleneck analysis of the whole process of network analysis. It is proposed that the performance of network analysis should be improved in three aspects: data input and output, topology analysis and core computing of Network Analysis Application. In the aspect of data input, the grid model data service is constructed to realize the combination of measurement reading and model reading, and the parallel model verification and boundary equivalence are completed; In the aspect of data output, it can be parallelized by table, block and equipment; In the aspect of topology analysis, the shared memory programming model OpenMP is adopted, and based on the fork/join parallel mode, its parallelization is realized; In the aspect of core computing, the existing parallel computing methods are summarized, and through the actual power grid simulation analysis, it puts forward the parallel computing mode applicable to different scale power grids and different applications. Finally, the effectiveness of this method is verified by comparing the optimized performance of state estimation.
Application of Ultrasonic Technology in Flow Measurement System in Irrigation District
Authors: Liu Qing , Feng Simin 
Published: July 2020

Abstract
Irrigation area measurement of water volume is to optimize irrigation area water use scheduling, and is the key to realizing irrigation area total water control and irrigation water quota management. In order to improve the management level of irrigation districts, speed up the construction of current irrigation districts, and gradually realize digital irrigation districts, it is imperative to transform the automatic construction of water measurement and water measurement in irrigation districts. This project takes the Erba Main Canal of Fenhe Irrigation District in Shanxi Province as the research site. The ultrasonic equipment installed on the irrigation open channel is used to study the measurement of the non-uniform flow of the open channel. According to the cross-sectional area obtained by the water level, the flow rate is calculated.
Research on Applications of An Improved Current Type Push-pull Full bridge bidirectional DC-DC Topology in UPS
Authors: Zhang Peng , Ren Xiuying , Lan Sen , Zhang Dewen , Zhang Hongda , Wang Yue , Shen Yubo 
Published: July 2020

Abstract
Uninterruptible power supply (UPS) boasts the superiority of fast dynamic response and clean output power, which can ensure the stable operation of the system and the safety and reliability of data. Currently, it takes up a large proportion in the backup power market and is extensively applied in key industries such as energy and the Internet. UPS is connected between commercial power and power load, and furnishes uninterrupted, reliable and high-quality power to vital loads when the input power fails. Bi-directional DC-DC converter can realize bi-directional flow of energy, which is functionally equivalent to two uni-directional DC-DC converters, rendering the system to carry the advantages of high power density and low cost, which has become a research focus at home and abroad in the passing years. The traditional current-mode push-pull full bridge topology fails to realize the soft start of the on-line UPS and stable operation of it under empty and light load. Based on this topology, the inductor secondary coil and two freewheeling diodes are added to make the push-pull tube work in any duty ratio state, thus meeting the design requirements of the bi-directional DC-DC converter in UPS. The working principle of the improved topology is described in this thesis, and Saber and Matlab are used for simulation analysis. Prototype is made and debugged to verify the feasibility of the design so as to achieve the expected design goals.
Analysis on the Problem of Blocking of the Storage Pump Caused by Peak Load Regulation of the Unit
Authors: Liu Ke , Wang Haichao , Liu Jinglong , Cui Fuxing , Duan Chuanjun , Zhang Xudong 
Published: July 2020

Abstract
A unit frequently participated in the deep peak load regulation of the power grid. In the process of deep peak load regulation, the time of oil feeding and stabilization of combustion was relatively long, which caused the blocking of the pipeline at the inlet of the ash storage pump at the rear of the electrostatic precipitator. According to the analysis, it was found that it was caused by the spontaneous combustion and coking of mixture of oil and pulverized coal which had not been thoroughly burned in the ash bucket.
Applicability Analysis of Directional Components in AC/DC Hybrid System
Authors: He Chenyun , Yang Binyuan 
Published: July 2020

Abstract
AC/DC hybrid power grids are more and more widely used in China, and the traditional relay protection directional components have experienced multiple misoperations. The adaptability of traditional directional components in AC / DC hybrid power grids is studied. Traditional direction components are based on fault sequence component network analysis. During the fault, the positive and negative sequence impedance of the AC-DC hybrid power grid is quite different, and the impedance angle of the line impedance and the equivalent impedance of the grid is no longer close to 90°. Misjudgment will occur in the direction component with sudden change, and performance cannot be guaranteed. As a result, directional elements based on the positive and negative sequence current branching coefficients being approximately equal are not suitable for AC/DC hybrid power grids. As for the directional element of the zero sequence principle, since the zero sequence network on the inverter side is relatively stable, its performance is reliable and it can operate correctly.
Research on the Comprehensive Energy Consumption of the Cable of the Radio Frequency Acquisition Terminal
Authors: Chen Xiangjin , You Dingjun , Wang Xiao , Cao Weijie , Xu Jianzhong , Bai Fan 
Published: July 2020

Abstract
Promoting two types and two transformations, and achieving two transformations is a medium- and long-term development strategy for cable implementation, and is committed to a smart, efficient, reliable, and green direction. The biggest difficulty in the research of distribution cables is the research of cables, and it is also the key point that affects the reliability of power supply. The article discusses the application of wireless radio frequency technology to the on-site identification of cables to improve the efficiency of on-site cable positioning and fault handling, improve power supply reliability, Cable intelligent, efficient and reliable cable research methods use radio frequency technology identification methods to collect on-site cable and equipment attribute information, establish on-site underground cable information identification network, establish data electronic ledger in the background, and then enrich the cable GIS system data, Analyse the comprehensive energy consumption of the cable, and provide a scientific research reference direction for the distribution network cable research.
Research on Key Technologies of Power System Automation Application under Smart Grid
Authors: Zhang Kexin , Tan Long , Chen Shiyu , Han Siwei , Zhang Dewen , Xu Minhu 
Published: July 2020

Abstract
With the continuous development of the scale of the power grid and the advancement of the integrated mode of regulation and control, the amount of real-time monitoring information in the power grid system has grown rapidly today, which has imposed a great burden on all levels of dispatch monitoring. The old alarm function of the power dispatching automation system has been unable to better meet the needs of efficient monitoring. Therefore, it is necessary to brush, analyse, process and summarize the alarm information of each link in the monitoring business, so as to improve the overall operation status of the power grid. Awareness and processing speed of abnormal faults. Based on this, this paper discusses and studies the smart alarms of the smart grid, analyses the overall architecture, and analyses several smart alarm technologies used in the smart grid system on this basis, with a view to the subsequent development of smart grids and alarms the technical research provides a theoretical reference.