bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effects of soil testing and Formula Fertilizer on Fruit quality of the Kyoho Grape
Authors: Zhang Liu-Jia , Li Jing-Bai , Chao-Liu  , Fang-Liu  , Zhang Jia-Min 
Published: March 2020

Abstract
The effects of soil testing formula fertilizer on fruit quality of the Kyoho grape was studied by using 4-year-old Kyoho grape as the test material. The results showed that, scientific and reasonable formula fertilizer could improve the quality of grape comparing with conventional fertilizer, evidently increase the single grain weight of fruit and single ear weight of fruit, and also increase the vitamin C content, sugar-acid ratio and solid acid ratio. On the other hand, it could decrease titratable acid content, and slightly increase vertical and horizontal diameters, but had little effect on pericarp color.
Effects of microbial fertilizer on apple fruit quality
Authors: Liu Yangyang , Xu Ximin , Fu Haiyan , Zhao Mingyang , Chen Wei 
Published: March 2020

Abstract
Pre-harvest factors have a great impact on fruit quality. In order to study the effects of pre-harvest microbial fertilizer on fruit quality, we applied Pseudomonas fluorescens and Bacillus amyloliquefaciens to ‘Starkrimson’ apples during maturation. We found that microbial fertilizer treatment can significantly increase the content of fruit aroma and soluble solids, single fruit weight and brittleness, reduce the organic acid content of the fruit during maturation. These findings provide reference for the scientific selection of fertilizer.
Recovery of copper and nickel from ammoniacal medium through double supported liquid membranes containing N902 as carrier
Authors: Duan Hengpan , Liu Hongpan , Chen Wei 
Published: March 2020

Abstract
In this paper, simultaneous recovery and separation of copper and nickel from ammoniacal medium through double supportedliquid membranes containingN902 as carrier were investigated. The results show that copper was continuously transported across double membranes, but nickel only was transported throughone of them. Therefore, more than92.4% of nickel and 94.0% of copperinthe mixed feed phase wereseparated into the twodifferent strip phaseswitha transporttime of 30 hoursunder the conditions:6 g/L and 180 g/L H2SO4 solutions as two different strip phases, 100 mg/L each of two metals dissolved in 2.0 mol/L total ammoniacal solution as the feed phase, and 25 vol.%N902 as the carrier in two membranes.
Evaluation the ecological water demand of Dongting Lake based on ecological hydrology during the storage period
Authors: Dai Lingquan , Liu Haibo , Li Wei. , Tang Zhengyang 
Published: March 2020

Abstract
This paper is aimed at evaluating the ecological water demand of Dongting Lake in the middle reach of Yangtze River. Since Dongting Lake has evolved into a lake area connected by three waterways: Eastern Dongting Lake, Southern Dongting Lake and Western Dongting Lake, the ecological water level and ecological water demand of different lake areas must be obtained separately. In the Eastern Dongting Lake, we choose Lujiao station as the water level representative station, and choose Yingtian and Yangliutan station as the water level representative station in Southern Dongting Lake, and choose Nanzui and Xiaohezui station as the water level representative station in Western Dongting Lake. The natural water level data is used to obtain the ecological water level in different lake areas of Dongting Lake based on the ecological hydrology method, and then the ecological water demand is obtained through the lake water level-volume relationship curve. The ten-day average minimum ecological water demand of Dongting Lake from September to October is 6.042, 5.294, 4.095, 3.548, 3.139, 2.864 billion m3. The determination of the minimum ecological water demand of Dongting Lake provides a scientific basis for defining the safety status of the lake ecosystem.
Experimental study on phase behavior of heavy oil-solvent mixture system
Authors: Zhang Yanyu , Liu Yunlong , Sun Xiaofei , Wang Xiangyu , Gong Hangfei 
Published: March 2020

Abstract
Phase behavior research is of great significance for formulating oilfield development plans. In this paper, an experimental procedure was proposed to investigate the phase behavior of a solvent mixture(5 mol% CO2+45mol% CH4+55 mol% C3H8) withVenezuela Orinoco heavy oil. The measured physical properties of the heavyoil–gaseous solvent system include the bubble point pressure, swelling factor, density and viscosity of the liquid phase as a function of gas mole fraction. The experimental results show that as the gas molar fraction increases from 10% to 30%, the bubble point pressure and swelling factor of the heavy oil-solvent mixture system increase accordingly; as the dissolved gas content in the heavy oil increases, the viscosity and the densityof the system is reduced, but the reduction is getting smaller and smaller.
The Impact of Urbanization Development on the Meteorological and Environmental Elements in the Central Cities of Liaoning Province
Authors: Wang Yangfeng , Lu Zhongyan , Zhao Hujia , Ma Yanjun 
Published: March 2020

Abstract
Based on the meteorological and environmental data on Shenyang, Anshan, Fushun and Benxi and the data on urbanization indexes in central cities of Liaoning from 1992 to 2012, this paper analyzes the law of annual changes of urbanization indexes and meteorological and environmental factors in central cities of Liaoning, and studies the influence of urbanization development factors on meteorological environment factors through correlation analysis, grey correlation analysis and the GM (1, n) model. Then the important influence factors are selected. The results show that the main urbanization factors affecting the wind speed, temperature, humidity and other meteorological factors in the central cities of Liaoning Province are the completed area of houses, population density, smoke and exhaust emissions, road length and so on. The urbanization factors that affect PM10, SO2, NO2 and other environmental factors mainly include the emission of smoke and gas, the total amount of water supply in the city, the completed area of houses and population density. The main influence factors of urbanization are different among in central cities of Liaoning. The fitting results of the GM (1, n) model show that there has a close relationship between urban development factors and meteorological and environmental factors. In addition, the GM (1, n) model has a high precision, which also shows the superiority of the GM (1, n) model in the application of urban multi factor correlation system.
Study on Dormancy Stage of Winter Bud of Grape
Authors: Fang-Liu  , Li Jing-Bai , Chao-Liu  , Wu San-Lin , Chang-Liu  , Wang Hang-Fei 
Published: March 2020

Abstract
Winter bud dormancy of grape cultivated in high temperature, humidity and low solar radiation areas of Sichuan Province experienced three stages of similar dormancy, internal dormancy and ecological dormancy. Around mid-October, it is the similar dormancy stage, and from mid-October to late-December, it is the internal dormancy stage. In early January, it enters the ecological dormancy stage,2.5% cyanamide treatment could break the dormancy of winter buds of ‘Summer black’ and ‘Xiangyue’ grapes.
Study on the Internet of things system for dust migration control on excavation surface
Authors: Gong Xiaoyan , Cui Jian , Zhu Bin 
Published: March 2020

Abstract
In view of the current situation of serious dust over limit and low intelligence level in the integrated excavation face, combined with the smart control device of wind flow developed in the laboratory, an intelligent control system of wind flow in the integrated excavation face is developed based on the Internet of things technology. This paper presents the realization method of the system hardware and the development process of the software. The system collects the sensor signals and remotely transmits data from the intelligent control device for the wind speed, gas, dust and wind current at the fully mechanized working face, and the remote transmission of data. The device performs automatic control to achieve real-time regulation of dust movement.Finally, the software and hardware system is applied to the intelligent adjustment test platform of local ventilation equipment in coal mine for testing. The test results show that the system runs smoothly, the data is accurate and the operation is simple.
Review of Environmental Safety Research Based on Systematic Mapping Study: Taking CNKI Database as an Example
Authors: Tu Xiaojian 
Published: March 2020

Abstract
This paper applies the Systematic Mapping Study (SMS) to the review of environmental safety research in China. Different from the traditional systematic literature review, this study focuses on the classification and analysis of related literatures to form a number of quantitative, systematic visualization images to identify the current status and gaps in the research field. The paper follows the SMS analysis steps, takes the literature related to environmental safety research in recent 3 years from CNKI database as the analysis sample. SMS method is used to systematically analyze the publication trends, research types and research contributions, which offers a visual summary map of the field. The research results show that the SMS method can reflect the status quo of environmental safety research and identify research gaps efficiently and accurately, and can put forward targeted opinions accordingly.
Dechlorination effect of slow speed elution on municipal solid waste incineration bottom ash
Authors: Lu Peng , Xing Li-Nan , Cao Qi-Quang , Zhang Ai-Jia , Zhang Xiao-Hui , Xie Guo-Li , Zheng Ming-Yue , Yuan Yuan , Chen Hong-Mie , Yang Dong-Qing 
Published: March 2020

Abstract
The bottom ash, accounting for 20% to 30% of the original living garbage, has been a large content source of municipal solid waste in China and incineration treatment becomes the most important garbage disposal method. The water-soluble chloride ions will be released to the environment by the eluent produced from the bottom ash. It has a negative influence on bottom ash treatment and reuse. This study analyzed the changing of residue of chloride ion, ammonium nitrogen, pH value during the elution process by the column simulation experiment. The dechlorination investigation may improve the commercial application of bottom ash by revealed the regular of chloride ion migration under the condition of slow speed elution.
Simulation Study on Transmission Line Fault and Traveling Wave Transmission Characteristics
Authors: Qin Xiujun , Huang Feng , Huang Zhidu , Mo Zhiyue 
Published: March 2020

Abstract
Fault traveling wave characteristics and traveling wave transmission characteristics are the key factors affecting the positioning accuracy of traveling wave positioning technology. This paper takes a common 110 kV transmission line as the research object, establishes the electromagnetic transient simulation model through ATP-EMTP software, and simulates the lightning strike, lightning shielding, metal grounding and high resistance grounding faults of the line, and obtains the difference of fault traveling wave current and voltage characteristics under different types of faults. On this basis, the attenuation law of each modulus traveling wave is studied. Finally, the application of each modulus traveling wave in fault location is analyzed.
Mechanism Analysis and Experimental Study on Tree Faults in Transmission Lines
Authors: Liu Zhenyao , Gao Song , Jiang Haibo , Guo Rong , Kang Yubin , Chen Xuan 
Published: March 2020

Abstract
It is difficult to reclose transmission line successfully after tree fault occurs, which is easy to cause line outage. At present, most of the existing research focuses on the diagnosis and disposal of tree faults, while the mechanism of tree faults is relatively rare. Firstly, the formation process of tree faults and the typical discharge characteristics at different tree height stages are analyzed. Then, the process of tree-wire gap discharge at different stages is simulated in laboratory environment. With trees approaching transmission lines, corona discharge, hidden discharge and flashover discharge occur in turn, and the discharge increases from weak to strong, and the amplitude increases, while the frequency of discharge waveform tends to decrease.
Design and Research of Power Grid Equipment Supply Chain Based on Blockchain Technology
Authors: Tang Xueyong , Li Qingsheng , Liu Qisheng , Xue Yi , Liu Yan , He Xianggang , Wang Longyang , Qu Haoyue , Tao Bingquan 
Published: March 2020

Abstract
The comprehensive construction of the ubiquitous power Internet of Things has been determined to the current core task by the State Grid Company. Power equipment supply chain is an important part of ubiquitous power Internet of things. Its operation efficiency is directly related to the operation efficiency of ubiquitous power Internet of things. In order to solve a series of problems in the operation of power equipment supply chain, such as lower efficiency of equipment supply chain, higher supply cost and poor stability of supply chain, due to the characteristics of information asymmetry, incompleteness and time lag. The block chain technology is introduced into the supply chain of power grid equipment. A multiple linear regression model is established to analyze the economic value of the system, and the stability of the system is analyzed by combining the basic characteristics of block chains. The feasibility of the theory is verified by case analysis. The results show that the supply chain of power grid equipment based on block chain technology can reduce the equipment purchase cost of power grid enterprises and improve the stability of equipment supply chain.
Stability coordination control of multi-resource integrated microgrid considering demand response
Authors: Sun Leping , Han Shuai , Wu Wanlu , Guo Xiaoxuan 
Published: March 2020

Abstract
Fully exploit the demand-side resources to build a multi-energy complementary microgrid system, which can improve the stability control of multiple indicators and save system operating costs. Based on the microgrid architecture including gas turbine generator set, energy storage system and central air-condition, each part of the system model is constructed to study the complementarity between resources, and a multi-resource integration multi-user regulation configuration method is proposed. Based on the principle of reverse thrust control, the multi-objective stability coordination control strategy of the microgrid system in off-grid mode is proposed, and the stability of the controller is proved theoretically. The control algorithm is verified by a simulation example. The result shows that the coordinated controller can ensure the tracking and adjustment of multiple controlled quantities such as power angle and frequency of the microgrid system during control, and the system can be quickly pulled back to stable operating state after the control is over. The participation of demand response resources in micro-network regulation can effectively improve the dynamic response of each state quantity of the system, and improve system stability, and reduce system control expenditure.
Experimental Study on High Frequency Pulse Current Variation Characteristics of Pollution Discharge of Insulators
Authors: Zeng Huarong , Tan Fali , Mao Xianyin , Zhang Lusong , Luo Guoqiang , Huang Huan , Lu Jinke , Zhang Qiangyong 
Published: March 2020

Abstract
Pollution flashover of insulators is an important factor causing trip of transmission lines and even large-scale blackouts of power grids. At present, the research on pollution discharge of insulators mainly focuses on leakage current monitoring, while leakage current detection mainly focuses on the low-frequency components of the discharge process, and the research on high-frequency discharge characteristics is rare. In this paper, the voltage is monitored based on the coupling capacitance partial voltage method. The high-frequency current is monitored based on the Rogowski coil principle. The characteristics of high frequency pulse discharge in safety zone, forcast zone and danger zone are analyzed. The results show that the pulse amplitude and repetition rate increase significantly with the increase of discharge. The statistical law of high frequency pulse current can reflect the severity of pollution discharge and realize early warning.
Research on the Low Voltage Ride Through Capability of Hybrid Modular Multilevel Converters
Authors: Huang Zhisong , Lv Dianshun , Wang Lipeng , Wu Xin , Ma Qiang 
Published: March 2020

Abstract
With the increase of the penetration rate of wind power in the power system, the latest grid-connection rules require that the inverter of Wind Turbine should have the capability of low voltage ride through (LVRT). This paper aims at a Wind Turbine based on hybrid modular multilevel converter (MMC). Firstly, the mathematical model of the system is established in the stationary coordinate system. In order to ensure that the Wind Turbine can operate without network disconnection during grid fault, this paper adopts a corresponding hierarchical control strategy, the strategy applies to hybrid modular multilevel converter and provide control flexibility, and realize the LVRT of a Wind Turbine, an electromagnetic transient model of the hybrid MMC based Wind Turbine is simulated in PSCAD/EMTDC and the results verify the feasibility and effectiveness of the proposed scheme and control strategy.
Practices and Enlightenment of Domestic and Foreign Demand Response in Electricity Market
Authors: Han Shuai , Wu Wanlu , Guo Xiaoxuan , Sun Leping 
Published: March 2020

Abstract
With the increasing proportion of intermittent power supplies and large capacity generator set, demand response based on excitation and price is widely concerned for improving the flexibility of system operation scheduling. The development of demand response in the electricity market is in the ascendant in the world, and the market mechanism can be better designed by fully drawing on existing experience. This paper comprehensively analyses the released relevant policies, technical standards and implementation of existing pilot projects of domestic and foreign demand response in electricity market, summarizing the research focus in recent years, learning the experience of the existing demand response project and combining the current situation of the power market revolution, then put forward some suggestions to develop the mechanism of demand response in electricity market.
Comparative Analysis of Two Actuators for High Voltage Bypass Switch
Authors: Jiang Jinghua , Zhang Hongtie , Sun Yingjie , Zhao Jianlei , Zhu Yu , Zhang Liyan , Dong Enyuan 
Published: March 2020

Abstract
The bypass switch is required to complete the closing operation quickly and accurately protect the transmission line. Therefore, there is a high requirement for the actuator of the bypass switch. According to the characteristics of the bypass switch, the commonly used actuators are compared, and the magnetic force actuator and the motor actuator are initially selected to meet the requirements. Firstly, the characteristics of the magnetic and motor actuator are compared and analyzed in principle. Then, the optimization model of the two actuators is obtained through simulation optimization. Under the same working voltage, the action characteristics of the two actuators, including the action speed, the start time and the output force, are compared. Finally, a comprehensive reference for the selection of the bypass switch actuator is provided.
Phase-controlled technology for bypass switch of UHV series compensation
Authors: Tan Shengwu , Wei Jianwei , Zhang Liyan , Zhang Chaojun , Zhang Yinsui , Zhu Yu , Dong Enyuan 
Published: March 2020

Abstract
The large inrush current occurs when the series compensation capacitor bank is cut off. The inrush current can be effectively suppressed by the phase-controlled technology. The controlled closing strategy for the bypass switch of the series compensation capacitor bank is developed in this paper. The UHV transmission line and capacitor series compensation are established. The arc model of pre-breakdown and time scatter model are established. The closing strategy is simulated in the MATLAB/Simulink. The simulation results show that the closing strategy in this paper can effectively suppress the inrush current of the bypass switch.
Research on High Voltage Power Line extraction based on Transmission Line Point Cloud characteristics and Model fitting
Authors: Yang Yuan , Yang Heng , Zhou ZhenFeng , Yang LiuGui 
Published: March 2020

Abstract
High-voltage power line digitization is one of the key contents of intelligent inspection of transmission line. Airborne LiDAR has obvious advantages in three-dimensional digital reconstruction of high-voltage power line. In this paper, a power line extraction algorithm for transmission line corridor based on LiDAR point cloud data is proposed. According to the distribution characteristics of point clouds in transmission line corridors, rough extraction of power lines is carried out. Noise points are eliminated by improved Hough and RANSAC parabola fitting method. Then the power lines are segmented horizontally and vertically. According to the vertical parabola model of a single power line and the straight line model of water surface, the complete power lines are extracted by model growth algorithm. Line point. The experimental results show that the accuracy of the proposed algorithm is 99.6%.
Research on the Market Pattern and Evolution of Integrated Energy Service Market in the Commercial Ecology of Ubiquitous Power Internet of Things
Authors: Siwu Li , Wei Zhang , Xi Chen , Jing Wan , Yuxin Zou 
Published: March 2020

Abstract
The introduction of UPIoT (Ubiquitous Power Internet of Things) has brought new opportunities and challenges to the entire energy production industry, and also brought new development space for the IES (integrated energy services) market. This paper analyzes the commercial ecosystem of the UPIoT, based on its core technology architecture and the intrinsic association between UPIoT and IES. This paper also analyzes the pattern of the integrated energy service market, classifies the main body of the integrated energy service market, studies different types of IES market competition and the evolution path of market development.
Interval prediction of photovoltaic power generation based on cloud theory
Authors: Zhao Haibo , Dong Xiaoyang , Wang Ai , Wang Zheng , Zhang Yanhui , Zhang Zhi , Dong Xia , Song Xiaojun , Wang Yaju , Xing Yahong 
Published: March 2020

Abstract
With the increasing integration of photovoltaic power into the power system, the reliable photovoltaic power generation prediction is of significant to the security and economics of the power system operation. However, the prediction deviation is unavoidable, therefore this paper presents an interval prediction model for the photovoltaic power generation based on cloud theory. Based on the error analysis of the photovoltaic power prediction, the training samples can be selected to establish the cloud model for each small power generation bin. In this way, the predictive cloud distributions for different predictive power generation can be obtained to generate the prediction intervals at each time slot. To take the photovoltaic power plant in German as example, the proposed model is validated. The results show that the proposed model outperforms the other benchmark method. And the calculation process of the proposed model is simple and short in computation time. The analysis results are expected to be used in the field of power grid dispatching and decision making.