bluuebunny/crossref_metadata_2025_split huggingface dataset:
Evaluation and Application of New Anti-expansion Unblocking Agent for Water-sensitive Oil Deposit
Authors: Wei Lili , Xie Juan , Yu Jiliang , Cai Shaosong , Zhang Wei , Yan Haijun , Ma Zhi , Su Na , Gao MengXiang , Liu Shasha , Qin Zhonghai 
Published: December 2019

Abstract
In water-injection development, water-sensitive oil deposits are prone to water injection pressure increase and water injection volume decrease, which makes it difficult to complete production and injection allocation. To solve this problem, on the basis of screening traditional anti-expansion unblocking agents, and combined with the performance evaluation of the formula and core experiment, a reasonable improvement scheme was proposed in this paper to develop a new type water-sensitive oil reservoir anti-expansion unblocking agent. The performance evaluation experiment shows that it has an applicable dissolution rate for oil rock samples and can dissolve inorganic salt scale; the anti-expansion rate is up to 90%; the core dynamic evaluation experiment shows that the core permeability can be increased more than double after the injection of the anti-expansion unblocking agent. The new type water-sensitive anti-expansion unblocking agent were used in 7 wells of the site, and all of them have a good effect of water injection pressure decrease and water injection volume increase.
Study on the dosage of temporary plugging Agent for steering fracturing
Authors: Dong Bo , Pu Xiao , Deng Jiasheng , Li Lei 
Published: December 2019

Abstract
The Triassic Baikouquan Formation in the Junggar Basin has developed a large number of dense sandstore conglomerate reservoirs, which belong to ultra-low permeability and ultra-low permeability refractory reservoirs. In recent years, the productivity of single well is improved by selecting potential production wells for multi-stage steering fracturing. In order to realize the forced steering of fractures, it is very important to study the sealing pressure of temporary plugging agent. According to the actual needs of Baikouquan steering fracture, the net pressure model of steering fracture is established. The net pressure value in the seam is calculated according to the change of ground stress after steering, then calculated the minimum temporary plugging agent sealing pressure needed for a single fracture. Based on the net pressure model, the corresponding software is developed and applied to the field. The practical application effect is good, which provides economical and effective technical technical support for the continuous and stable production of low permeability oil field.
Development and Application of R pin insulator insulating rod with pincer
Authors: Jun Ma , Yonggang Shi , Gang Dong , Fuxing Gong , Kegang Wei , Xin Su , Yu Ding , Zhu Wang 
Published: December 2019

Abstract
In the field of live working of transmission lines, the R pin insulator has been put into application as an emerging type of insulator connection in recent years. In view of the difficulty in eliminating the prior art and tools, and affected by the working environment, this scheme has designed a kind of R pin insulator insulating rod with pincer. The design scheme consists of a hook body and connecting members, an insulating operating rod, etc., and does not change the operation method of the original insulating rod for the pincer, and the hook head is horizontally moved by the rotation of the nut to achieve the loading and taking of the R type limiting pin. The deductor has a simple structure, is simple and flexible to operate, and is convenient to carry. The process of taking off the sales is less difficult, greatly shortening the time, improving the efficiency of the work, and achieving the purpose of optimizing the operation process. And it has a broad market prospects.
Study on corruption bacteria in Beijing sausages
Authors: Gao Xiang , Han M M , Zhang X Y , Cai Z Y , Wang Fang , Pang M X , Qi J H 
Published: December 2019

Abstract
Low-temperature meat products are very popular, but due to the characteristics of processing technology, there are still some heat-resistant microorganism residues after sterilization, which lead to its extremely vulnerable to corruption and short shelf-life. The spoilage discipline and mechanisms of Beijing sausages were summarized on the basis of spoilage bacteria isolation, identification and analysis. The main results were as follows: by using method of 16S rDNA sequence analysis, the main spoilage bacteria which isolated and identified from Beijing sausages were Pseudomonas sp, Staphylococcus sp, and Brochothrix sp. By denaturing gradient gelelectrophoresis(PCR-DGGE) analysis, there were 13 kinds of the spoilage bacteria of Beijing sausages, and Pseudomonas sp was the main spoilage bacteria.
Study on enhancing heat transfer performance of spiral groove tube in phase change heat storage for solar energy
Authors: Jingzhi Jiang , Lin Bo , Zhengjia Chen , Shuyao Hu , Haiting Cui 
Published: December 2019

Abstract
Based on the energy storage problem for solar energy utilization and the advantages of spiral groove tube heat exchanger, spiral groove tubes were used in the solar energy phase change heat storage. The thermal storage process of heat reservoir was simulated numerically. Firstly, the simulation method and the reliability of the used model are verified experimentally with smooth tube. Using spiral groove tube as water flow pipe and phase change material as heat storage medium, The three-dimensional model of heat storage was built by Gambit software and the grids were divided by ICEM. The heat storage process in the spiral groove tube and smooth tube heat storage were numerically simulated and the heat transfer enhancing effect was investigated. The influence of structural parameters such as groove pitch and groove depth on the heat storage process is simulated numerically and the influence rules are analyzed. The results show that the convective heat transfer intensity and heat transfer capability are enhanced when the smooth tubes are substituted by spiral groove tubes in the phase change heat storage and the heat storage time becomes shorter. In the range of this paper, the optimal structural parameters of spiral groove tube is groove pitch p=7mm and groove depth e=0.4mm.
Performance test & analysis on fan coil unit and improved induction air unit system
Authors: Wang Zhiyi , Li Jingfan , Wang Dongming 
Published: December 2019

Abstract
Induction air unit was improved by decreasing the induction ratio and adding the rectifier. Performance test on fan coil unit and improved induction air unit system was carried in the model houses. Test results showed: (1) Induction air unit system could meet the temperature requirement of room. It had a strong dehumidifying ability and much uniformity air velocity in the range of comfortable. (2) Induction air unit system had little temperature gradient and difference. (3) The unit was energy efficient combined with the extensive air handling unit and medium temperature chiller. Improved induction air unit would be used in the high quality air conditioning spaces.
The determination of simultaneous use coefficient for load prediction of the tourism resorts
Authors: Guozhong Zheng , Yajing Wang 
Published: December 2019

Abstract
Load prediction of regional buildings is the basis of equipment capacity allocation of regional energy system. However, the equipment capacity of the energy system is usually too large and unnecessary energy consumption is wasted. It is very important to choose an effective load prediction method. In this paper, scenario analysis and software simulation methods are combined to simulate the cooling load and heating load of the tourism resorts, then the load and the simultaneous use coefficients of the tourist resorts under different building ratios are obtained. The proposed method is simple and effective, and it can provide reference values of simultaneous use coefficients for similar projects in the future.
Applying analysis of power quality enhancement by using UPQC
Authors: Xie Wei 
Published: December 2019

Abstract
The current power sector is dealing with the weak power quality issues and the main reasons hiding behind the weak power quality are harmonics, fluctuations of voltage, transients and reactive power consume. These problems are caused by arising trends in our consume. Nowadays, the share of supply from power electronic devices has greatly increased among our consume. Coupling of the grid to a symbiosis of wind farms and PV parks has also raised matter of weak power quality. There is no doubt that shunt and series compensation is efficient but if they are utilized as a single unit simultaneously, this will increase the efficiency of the device and become a greater beneficiary of the power sector, which together serve as UPQC (Unified Power Quality Conditioner). Therefore, to improve the power quality is the main task of UPQC and through compensation to the above problems proves that it has considerable advantages in improving power quality. So UPQC is considered to be an effective method to solve power quality problems. Since UPQC is used for both shunt and series compensators, it contains two inverters to provide this service. They are voltage source inverters with a common DC link, which are called shunt and series converters. These controllers can be controlled by various techniques such as PI controllers, Fuzzy controllers, Neural Networks etc. The series converter is in charge of the smoothing of the voltage, and the shunt converter compensates for the distorted load current.
Review and evaluation of the research status of science and technology innovation index
Authors: Chang Yan , Shi Yongpeng 
Published: December 2019

Abstract
At present, technological innovation has become the most important competitiveness of a country. Starting from the scientific and technological innovation index, this paper firstly reviews the research status and evaluation criteria of science and technology innovation index at multiple levels such as the national, regional, and enterprise levels. Then the practice of the current science and technology innovation index is systematically combed and studied. Finally, on the basis of literature review and status quo, this paper reviews the current research on sci-tech innovation index, and points out that selecting appropriate index system according to different stages of economic development and different levels of sci-tech development is the foundation of constructing sci-tech innovation index.
An Empirical Study on Party Basic-Organizational Construction and Organizational Outcomes in State Owned Enterprise–Take Psychological Empowerment as Moderators
Authors: Ni Hui-jun , Kang Mingju , Wang Xi 
Published: December 2019

Abstract
The paper discusses the impact of Party Party Construction and organizational outcomes. The survey from state owned enterprise shows that party basic-organizational construction can significantly affect organizational outcomes. This paper takes psychological empowerment as intermediary variables to study the relationship between party basic-organizational construction and organizational outcomes. The survey from State owned enterprise shows that Party basic-organizational construction can have significant predictive power on outcomes and psychological empowerment acts as a significant moderator. This research provides useful tools for organizational outcomes management through enterprise activities of party basic-organizational construction.
Correlation Analysis between party leading and Organizational Outcomes in Grid Enterprises–Take Organizational Learning as Moderators
Authors: Ni Hui-jun , Ye Fei , Li Jingwei 
Published: December 2019

AbstractThe paper discusses the impact of party construction and organizational outcomes. The survey from state owned enterprise shows that Party Construction can significantly affect organizational outcomes. This paper takes organizational learning as intermediary variables to study the relationship between state owned enterprise and organizational outcomes. The survey from state owned enterprise shows that party construction can have significant predictive power on outcomes and organizational learning acts as a significant moderator. This research provides useful tools for organizational outcomes management through the power of enterprise activities of party construction.
Evaluation Method of the Spatial-Temporal Complementary Characteristics Between Power Source and Load Based on Power Big Data
Authors: Zheng Kuan , Yan Xiaoqing , Li Yachun , Yang Jie 
Published: December 2019

Abstract
With the rapid development of the intermittent renewable energy power generations such as wind power and solar power and the new random load such as EV, the double randomness become a great threat the safe and stable operation of power system. It has become a hot issue raised increasingly concern from the academic and engineering fields that how to reduce the randomness and volatility of the two sides of the system by utilizing the spatial-temporal complementary characteristics of different energy resources and loads. In this paper, the evaluation model of complementary characteristics between power and load across time and space based on the Power Big Data theory is proposed. By simulating the complementarity of the power supply and load between Northwest China and European load centres from three dimensions: load-load complementarity, source-source complementarity and source-load complementarity, it proves there are great complementary benefit by interconnecting the grids with different regions across continents, which provides a theoretical basis for the next implementation of the Global Energy Interconnection.
Optimization of Process Technique of Rice Milk Drinks via Response Surface Methodology (RSM)
Authors: Lin Qian , Zhang HongYun , Li Jun , Zhu Danshi , Liu He 
Published: December 2019

Abstract
In this manuscript, the production process of rice drink was optimized by response surface analysis. The results showed the best process conditions for rice milk drinks as follow: ratio of material to liquid was 1:18, the amount of maltose added was 5.4% and the amount of non-dairy cream was 1.3%. The product was an ivory emulsion, which not only had a strong rice flavor and frankincense, but also had a delicate and smooth taste without condensation and stratification which provided new ideas and methods for the intensive processing of glutinous rice.
Research on Interaction and Coordination Control Technology of Wind Power and DC System of Receiving Grid
Authors: Li Haifeng , Li Xiaojun , Chen Meng , Jin Tao , Tang Xiaojun , Huo Qidi 
Published: December 2019

Abstract
In this paper, an in-depth study on the interaction characteristics and coordinated control technologies of wind power and DC systems is carried out. This paper first defines the physical significance of the interaction between wind power and DC in the receiving grid. At the same time, an interaction factor that takes into account the strength of the wind and DC relative AC system and the relative impedance between them is established. Then the factors affecting the interaction between wind power and DC system are analyzed. Finally, the coordinated control strategy between the them is discussed. The North China Power Grid, which is connected by offshore wind power and Xitai DC, is used as an example. The results show that the smaller the electrical distance between wind power and DC system, the larger the scale of the two systems and the more obvious interaction between them.
Wind power grid-connected frequency regulation strategy based on ESO control and PI control
Authors: Xu Maoda , Yang Hui , Hao Wenbo , Zhao Xiaoyang , Yu Siyao 
Published: December 2019

Abstract
Frequency fluctuation of wind power grid-connected system is difficult to adjust, aiming at this problem, this paper proposed a control strategy based on the combination of inner loop control and outer loop to restrain frequency fluctuation. extended state observer (ESO) is used as the outer loop. The error and disturbance which cannot be reflected directly in the system structure are estimated by linearization. The inner loop PI controller is designed through the parameters of proportional link and integral link to realize the reasonable allocation of internal model poles and achieve better damping effect. Simulation show that the control strategy can effectively suppress the system frequency fluctuation caused by load fluctuation and maintain frequency stable. The research results can be used to guide engineering practice.
Simulation of an improved PID algorithm and its application in thermal conductivity measuring apparatus
Authors: Wang Jun , Wei Yongbin , Chen Wenjie 
Published: December 2019

Abstract
The working principle of an improved PID algorithm and its application in thermal conductivity measuring apparatus is presented in this work. A special simulation application software was developed for parameter tuning and optimizing. The simulation result was used in the thermal conductivity measuring apparatus which is designed under the principle of guarded hot plate. Therefore, the testing process time required for the thermal conductivity of building thermal insulation material was cut by one-third, from one hour to twenty minutes.
Accurate Positioning in Extraordinary Circumstances
Authors: Li Qi 
Published: December 2019

Abstract
This paper mainly introduces the indoor and underground closed space, When the GPS can not meet the user’s requirements for positioning accuracy, the new positioning technology is adopted. SLAM positioning for indoor positioning, and some basic component information used in this technology is at the present stage; In addition, the UWB ultra wideband technology used in underground space and some commonly used algorithm models of the technology are presented.
Research on the development of photovoltaic informatization based on ubiquitous power Internet of things
Authors: Fan-teng Meng , Xiang-ying Xie , Zhi-xiong NA , Da-yan MA , Wen-tao Shen 
Published: December 2019

Abstract
The Internet of things integrates traditional technologies with communication, information, sensing and other technologies to achieve comprehensive perception, intelligent processing, reliable transmission of traditional physical facilities. Photovoltaic power application market has developed over a decade, with a continuously expanding installed scale and the conditions of grid parity have been provided preliminarily. In this paper, photovoltaic distribution is proposed to replace large centralized ground power stations in the future and become the main force of photovoltaic power generation. In addition, intelligent photovoltaic Internet of things (iot) system with comprehensive perception, cloud-side collaboration and whole-process data sharing and integration is designed.
A new type of high density fracturing fluid system
Authors: Gao Yuebin , Cai Bo , Qiu Jinping , He Chunming , Duan Guifu , Li Shuai , Xu Zhihe 
Published: December 2019

Abstract
Deep oil and gas reservoirs enjoy great opulence in resources, and yet the ultra-deep burial, high temperature, high pressure and natural fractures in reservoirs bring great difficulties to propped fracturing. Given the challenge of propped fracturing in deep reservoirs, a new cost saving and high density fracturing fluid system was developed, of which the performance was evaluated and formulation was optimized, and with this fracturing fluid system, wells that cannot be treated before, can now be effectively stimulated. The advanced fracturing fluid system has been applied to eight layers in five wells, which all proved to be successful and effective, with remarkable reservoir stimulation efficacy. The post-production in the formation testing grew twice of the pre-fracturing production, and two wells were seen gas production exceeding one million cubic meters. The advanced fracturing fluid system greatly expands the well depth range of exploration and development, and lays a solid technical foundation for implementation of propped fracturing in deep reservoirs.
Test of flow characteristics and parameter optimization of steam turbine DEH
Authors: Zhizheng Du , Yan Zhang , Baoying Zhu 
Published: December 2019

Abstract
The characteristics of steam turbine high pressure cylinder intake valve directly affect the performance of AGC and primary frequency modulation, In DEH system, the nonlinear characteristics of the high valve flow need to be corrected to ensure a smooth and linear relationship between the integrated valve level instruction and the steam flow of the turbine. When the nonlinear correction of the high valve flow is not correct, there may be nonlinear intervals such as “dead zone”, “jump”, and “inflection point” between the valve comprehensive opening instruction and the steam turbine flow, The valve integrated opening command mutates the gain of steam turbine flow, causing the valve to be insensitive or oscillating when the valve is in a certain opening range under the coordinated control system of the furnace and machine.
The shunt capacitor placement based on partition method in middle level distribution networks
Authors: Lunzhu Dawa , Kui Tao , Dunzhu Basang , Ping Ni , Zhihua Dong , Zhiyuan Pan 
Published: December 2019

Abstract
The capacitor placement based on rational reactive power partition can reduce the power loss and increase benefits in middle distribution systems. So this paper proposes a new capacitor placement method based on reactive power partition. First the distribution is partitioned by Depth First Search algorithm and the principle that the reactive power of each partition load is the most similar. Then the number of node is also more similar in each partition. This is helpful for the selection of locations. Secondly the locations and capacity are simultaneously optimized after partition and obtain more benefits. Finally the 94 node distribution system proves the advantage and practicality of the proposed algorithm.
Research on the Progress Supervision Technology of Electricity Grid Construction Projects Based on Multi-service Collaboration
Authors: Zhang Jian , Yang Junyi , Gao Qian , Liu Kai , Jin Cheng , Huang He , Wang Jing , Tang Jie , Xu Shijie 
Published: December 2019

Abstract
With the continuous deepening of external supervision and internal lean management, the quality requirements for investment statistics of power grid enterprises are increasing. However, the scale of investment and the number in power grid projects are large. The traditional management mode is not only heavy workload but also low accuracy. Therefore, it is necessary to strengthen the supervision of the progress of electricity grid construction projects through the coordination of multi-business departments, and check the quality of investment statistics, so as to find suspected problem items in time, to batch positioning the causes of deviation and to improve the lean management level of electricity grid construction projects.
Optimization Study on Direct-expansion Evaporative Condensation Air-conditioning System
Authors: Yu Wenhong , Wang Haoyu , Zhang YiXiang 
Published: December 2019

Abstract
This paper introduces the working principle and characteristics of the direct-expansion evaporative condensation air-conditioning system, and analyzes the main factors affecting the cooling efficiency of a building’s direct-expansion evaporative condensation air-conditioning system. Based on the conclusion, this paper optimizes the operation strategy and reduces the system energy consumption and provide reference for the design, control and operation of this system in the future.