bluuebunny/crossref_metadata_2025_split huggingface dataset:
Distributed coordinated control of energy storage system in low-voltage distribution network
Authors: Yang Xiao-ping , Quan-kai MA 
Published: November 2020

Abstract
With the increase of the photovoltaic penetration rate in the low-voltage distribution network, the uncertainty of its output has adversely affected the voltage quality of the power grid. In view of the relatively large R/X characteristics of the low-voltage distribution network, it is proposed to coordinate the active power of the optical storage unit injection system to solve the problem of voltage over-limit of the low-voltage distribution network. Aiming at the imbalance of the energy storage system participating in the voltage control process, a control strategy to coordinate the charging and discharging of each unit of the distributed energy storage system was proposed. At the same time, considering the capacity of the energy storage unit and the coordination of the initial state of charge, the capacity of the energy storage system is utilized to the maximum extent. Finally, the simulation verifies the effectiveness of the proposed coordinated control strategy.
Failure Analysis of 500kV Gapless MOA
Authors: Yang Shaoyuan , Yang Xuefei , Wang Rongchao , Wu Chunhong 
Published: November 2020

Abstract
This paper analyzes the cause of a 500kV gapless MOA fault in a substation. The appearance inspection and disassembly analysis of the arrester are carried out. Combined with the protection action, the fault cause of the arrester is analyzed. It is found that the fault is caused by the side flashover failure of the local resistor piece of the line arrester due to the steepness of the lightning invasion wave is large. When the line is reclosed, the lower section bears the over-voltage, resulting in the damage of some resistors, and then causes the pressure release. Based on the analysis the paper puts forward some corresponding operation and maintenance measures.
Correlation analysis between forced oscillation modes caused by wind power
Authors: Lyu Wan , Gu Wen , Wu Xi , Yang Hongyu , Jiang Chen , Xu Shanshan 
Published: November 2020

Abstract
With the increase of the grid-connected capacity of wind power, the influence of power system forced oscillation caused by wind power is becoming bigger and bigger, so it is necessary to understand its production mechanism and general characteristics. In this paper, the nonlinear and non-stationary signal generated by the unstable wind speed is analyzed to speculate the characteristics of wind-induced oscillation. Secondly, the bispectrum analysis and the bicoherence analysis are introduced. The obtained bispectrum and bicoherence coefficients are used to analyze the oscillation caused by wind power and the quadratic phase coupling relationship between oscillation modes. Finally, the simulation is operated considering small wind farm connected to a 4-generator-2-area (4G2A) system. The simulation results verify the correctness of the proposed speculation and the effectiveness of the proposed method.
Benefit-balance model of combined operation of wind power and pumped storage based on Sharply value method
Authors: Li Jia , Xue Lei , Song XiaoJun , Li Yong , Ge AiXin , Chang Pengfei , Li ShouQiang 
Published: November 2020

Abstract
Reasonable benefit distribution is a key issue in the joint operation of wind power pumped storage. Only by ensuring the fairness of the benefit distribution can the cooperation of wind power pumped storage be carried out for a long time, and then the maximum benefit can be guaranteed. This paper analyses the problem of reasonable distribution of profits from the combined operation of wind power pumped storage from the perspective of cooperative game theory, uses the Shapley value method to distribute the profits obtained from cooperation, and improves them. Factors such as value, input resource level, resource utilization rate, etc., introducing a comprehensive correction factor, thereby establishing an improved profit distribution model of the Shapley value method. The result of the example analysis shows that the improved profit distribution model of Shapley value is more in line with the actual situation, and the interests of various partners are guaranteed to the greatest extent, which is helpful for the long-term cooperation of this cooperation, thereby bringing benefits to the dispatch of the power system. Therefore, the improved Shapley value method is an important method of profit distribution for the combined operation of wind power pumped storage.
Analysis of Electric Field Distribution on Composite Insulator of 500kV AC Typical Tower and Its Effect on Decay Fracture
Authors: Fan Yu , Deng Yu , Zhou Jun , Wang Jian , Lei Longwu , Xu Jun , Wang Xiaojie 
Published: November 2020

Abstract
A new type of composite insulator mechanical failure named decay-like fracture happens rather often in UHV AC transmission lines. However, the cause from the point view of electric field is not clear. To investigate the effect of electric field on the occurrence and development mechanism of decay-like fracture, the 3D tower-conductor-insulator models for ZB2-type and CZ34-type transmission tangent towers are established and analysed based on the finite element simulation. The conclusion can be drawn that the tower type has a significant effect on the electric field distribution along the axial direction of the insulator string, and the degradation is more likely to occur in high-voltage side of the B-phase string, which is consistent with the fracture failure investigation. Simulation results also show that the withstand electric field strength is 297kV/m. The distribution of surface potential and electric field under the actual operating voltage provide a new idea for the condition monitoring of the decay-like fracture of UHV AC composite insulators in transmission lines, as well as a reference for further research in the field of decay-like fracture failure.
Research on wireless sensor network system for structural damage monitoring
Authors: Ding Lei , Wu Jian , Hu Yu , Shi Tian-tian 
Published: November 2020

Abstract
In recent years, the application of wireless sensor networks in the field of structural monitoring has been widely concerned by experts and scholars in various countries. The throughput and real-time performance of the wireless sensor network should be considered when the structure health monitoring wireless sensor network is deployed. According to the characteristics and requirements of wireless structure damage monitoring, this paper analyzes the system from three aspects: monitoring system process, node design and damage diagnosis algorithm.
Research on Multi Time Scale Scheduling based on Active Distribution Network
Authors: Yu Hongxia , Han Tianhang 
Published: November 2020

Abstract
The active distribution network is a public distribution network with a flexible structure, which adopts the mode of active management of distributed power supply, energy storage equipment and customer two-way load. In order to reasonably plan the distributed power, coordinate the optimal operation of the distributed power and give full play to the active role of new power sources and loads such as the distributed power, it is necessary for the distribution network to take active management and planning. The multi time scale coordinated control strategy of active distribution network can make up for the prediction error of renewable energy and load in the future, and give full play to the active role of new generation such as distributed generation. Multi time scale scheduling includes the global optimal control of active distribution network on the long time scale, the correction of long time scale prediction error on the short time scale and the regional autonomous control of real-time active distribution network. The study of multi-objective function and multi time scale scheduling can control multiple optimization objectives, integrate economic environment and other factors, which has the significance of compensating the prediction error of renewable energy and load in the future.
Red electroluminescence from Tb2O3: Eu/PEDOT: PSS heterojunction light-emitting diodes
Authors: Wan Guangmiao , Wang Shenwei , Li Ling , Yin Xue , Mu Guangyao , Yi Lixin 
Published: November 2020

Abstract
In this work, heterojunction light-emitting diodes made of Tb2O3: Eu and PEDOT: PSS were prepared and the impact of PEDOT: PSS on luminous intensity of the devices was studied. The electrical and optical properties of the devices were tested. Five luminescence peaks at 544, 585, 610, 648, and 695 nm, corresponding to Tb3+ 5D4 →7F5 and Eu3+ 5D0 →7F1,5D0 →7F2,5D0 →7F3 and5D0 →7F4 transitions were observed. The PEDOT: PSS film has an enhancement effect on electroluminescence.
Optimization of Flash Extraction Process and Antioxidant Activity in Vitro of Ligustrum Lucidum Seed Oil
Authors: Zhou Guangjiao , Feng Xuehua , Ji Donghan 
Published: November 2020

Abstract
Taking the extraction voltage, liquid-solid ratio and extraction time as the factors, and the yield of Ligustrum lucidum seed oil as the evaluation index, response surface methodology was used to explore the best technology of Ligustrum lucidum seed oil flash extraction method, and its antioxidant activity was analyzed. The results showed that the optimum extraction conditions were as follows: voltage 140 V, ratio of liquid to material 12:1, extraction time 150s, and the oil yield was 13.53%. The results showed that Ligustrum lucidum seed oil had certain scavenging ability to DPPH · free radical and hydroxyl radical, and its scavenging ability were positively correlated with its mass concentration. When the mass concentration was 2.5mg/ml, the DPPH · free radical scavenging rate was 32.25% and the hydroxyl radical scavenging rate was 43.83%.
Signal Denoising of Multi Element Infrared Signal Based on Wavelet Transform
Authors: Lei Bingshan , Hao Weina , Yan Keding , Li Jing 
Published: November 2020

Abstract
General target detection system is based on active detection method, which is usually of poor concealment and bulky. In order to improve the concealment and dexterity of airborne detection, an airborne infrared scanning imaging system for ground vehicles based on passive infrared detection is proposed. In order to solve the problem of false alarm and false recognition when the rotary airborne multi-element infrared detection is used to identify armored vehicles on the ground, based on the wavelet theory, the infrared signal output from the air to ground rotary detection system is de noised by wavelet. The denoising threshold function suitable for the rotating multi element infrared detection system is constructed. Through calculation analysis and experimental verification, the fours-layer coif wavelet basis function is the best. On the premise of not losing the infrared information of the original armored vehicle target, the output waveform is flat when there is no armored vehicle, and the output waveform is smooth when there is armored vehicle target. It provides a theoretical basis for the later realization of armored vehicle type identification.
Study on the Relationship of FDI and Processing Trade Value-added Rate —Based on the Data from Shandong Province of China
Authors: Sui Hongxia 
Published: November 2020

Abstract
Based on the data of Shandong province in china over the 1998-2017 periods, this paper examines the impacts of inward FDI from Japan, Korea and USA on the Processing Trade Value-added Rate (ADVA) respectively. The cointegration equation indicates Japanese and Korean direct investments in Shandong Province are positively correlated with ADVA, but American direct investment is negative. There is no evidence that the FDI from Japan, Korea and USA have effects on the processing trade value-added rate of Shandong province as they are not Granger causality of ADVA. The power to promote the transformation and upgrading of Shandong’s processing trade comes from inside instead of outside, and independent technology innovation is critical.
Climatological influence of land and atmospheric initial conditions on North America and Eurasia surface temperature and circulation in the past 57 years (1958–2014) reforecasts
Authors: Shukla Ravi P 
Published: November 2020

Abstract
This study demonstrates the potential impact of land and atmospheric initial conditions (ICs) on the mean state of land surface temperature (SKT) and mid-troposphere circulation over Eurasia and North America (NA) using the Climate Forecast System version-2 (CFSv2) ensemble seasonal reforecasts for 1958–2014. The land ICs and atmosphere ICs have assembled from several different data sources before and after 1979 in January initialized reforecasts (JIR). Therefore, two-time periods have defined, earlier period (1958–1978) and later period (1994–2014). The climatological difference between JIR P58-78 and P94-14 depicts enhanced cold SKT and sub-surface temperature at 0–10 cm over northern Eurasia and northeast region of NA from May to June. Model overestimates snow cover fraction from May to June in JIR P58-78 than JIR P94-14, which leads to excessive upwards-shortwave radiation in the northern latitudes. Due to cold temperature from the surface to mid-troposphere, model depicts lower geopotential heights in mid-troposphere, which leads to increase westerly winds at mid-troposphere over northern latitudes from May to June. The climatological differences between earlier and later periods of JIR from May to June are similar to differences between reforecasts initialized in winter and spring as reported by some recent studies. The climatological difference between JIR P58-78 and P94-14 depicts enhanced cooling from surface to 600 hPa over northern latitudes in January. As lead months increase, the magnitude of cold temperature decreases gradually from February to March. Most prominent centers of geopotential height from surface to mid-troposphere over northern latitude in climatological differences between earlier and later periods of JIR in January vanish in February. The different sources of ICs and the nature of land conditions before and after 1979 are main causes of large differences in JIR from May to June over northern latitudes.
Sustainable development of rural areas, Russian issues
Authors: Diuldin Maksim , Bykova Natalia , Zhuchenko Alexander , Rozhmina Tatiana , Cheremisin Alexey , Switala Franciszek 
Published: November 2020

Abstract
The rural areas of Russia are characterized by a great variety of natural conditions, depending on their geographical location. This determines the historical economic use of these areas and hence the formation of certain types of agro-ecosystems. The rapid growth of cities in some regions of Russia has led to a marked disruption of life-supporting processes in the surrounding natural ecosystems, as well as in rural areas adjacent to cities and their agglomerations. From this point of view, it is important to find models for ecologically balanced rural development. Compared to “organic agriculture”, it is a broader concept that may be closer to “sustainable” agriculture.
Ecological state of soils in recreational areas
Authors: Hamitova Svetlana , Ivanova Marina , Fedchenko Elena , Pestovskij Aleksandr , Popova Aleksandra , Vlasova Olga 
Published: November 2020

Abstract
Study of heavy metal contamination of soil is carried out by means of various methods in many countries of the world. The review of to-date research works performed by us has shown that the Chinese scientists have been particularly active in this issue. Analysis of the land cover of the Vologda region is not well examined yet, which enhances the relevance of our research. In 2018, with the support of veterans, Olympic champions, the administration of the Verkhovazhsky rural settlement, State Duma deputy E.B. Shulepov in the village of Smetanino, we created the People’s Garden, Veterans Park, and the Olympic Cedar Grove. The aim of the research is to study the soils of the recreational areas of the village of Smetanino, Verkhovazhsky district, Vologda region. The research methods included determining the chemical composition of the soils selected, as well as processing and summarizing the data obtained. The sampling was carried out in 2019. The chemical tests of soil were performed according to the approved GOSTS and methods in the accredited laboratory of the FSBI Federal Centre of Agrochemical Service Vologodsky. In general, Veterans Park has the greatest heavy metal contamination of the soil, while the Olympic Cedar Grove has the least.
New approaches and methods for technologically polluted territories remediation
Authors: Sushkova Svetlana , Minkina Tatiana , Dudnikova Tamara , Barbashev Andrey , Kalinichenko Valery , Antonenko Elena 
Published: November 2020

Abstract
Polycyclic aromatic hydrocarbons (PAHs) have been a major concern because of their carcinogenicity, mutagenicity, teratogenicity and wide distribution in the environment. Over 90% of PAHs in the environment exist on soil surface/sediment. Thus, it is critically important to understand the patterns of BaP accumulation and transformation peculiarities in soil for the technologically polluted territories remediation. It was studied the soils contaminated by power energy enterprise working on the burning coal with over 70% emissions containing PAHs. The territory adjoined to the Novocherkassk Power Station showed an intensive accumulation of polyarenes increased from 2012 up to 2019. With increasing distance from the plant, the PAHs accumulation in soils gradually decreases. The maximum of the PAHs content in the soil was found on the monitoring site located at 1.6 km from the enterprise 4185.4 ± 167.4 ng/g, the lowest level of PAHs was found at 20 km (1185.5 ± 45.0 ng/g PAHs). PAHs extraction from collected soil samples was performed using new ecologically clean express-method of subcritical water extraction without organic solvents use. The approaches for improving the contaminated territory ecological situation have been proposed including biological remediation by biochar, activated carbon.
On the possibility of using noble gases in the liquid phase in agriculture
Authors: Mozhyako Anna , Dudkin Valentin , Kosolapov Vladimir , Savchenko Ivan , Zhuchenko Alexander , Diuldin Maksim 
Published: November 2020

Abstract
The article substantiates the need to search for new solutions to increase crop yield through the use of new fertilizers. One of the options was proposed in this article. During the operation of nuclear power plants, by products are formed in the form of inert gases, for example, an isotope nitrogen-16, or helium-3 and helium-4, or xenon-133 and xenon-135. They are quite difficult to filter out of the air. If they are filtered into the atmosphere, other gas formations will pass. Therefore, the design of a cryogenic unit was developed for their deposition on the walls of the pipeline (transfer to a liquid state). In this case, they are separated by using different temperatures. Each liquid mixture is placed in its container. In autumn, these mixtures are transported to agricultural fields and spreads out. Experiments have shown that the use of these mixtures can increase the potato yield by two times compared to the case of no use of fertilizers. When comparing the results of the research of the potato yield grown using manure from domestic animals and compost with the yield obtained using a liquid mixture of the noble gas, it was established that the yield is lower by 60 % and 40 %.
Problems of waste management for semi-submersible drilling rig «polar star»
Authors: Chulkin Sergey , Polyakov Nikita 
Published: November 2020

Abstract
The development of hydrocarbon deposits on the Sakhalin shelf is one of the main components of JSC. Gazprom’s Eastern gas program. When drilling mud is used in the process of drilling wells, one of the most important components in the installation is a circulation system designed for cleaning the drilling mud from solid and gaseous phases, storing it and then feeding it into the well. In the light of the above, the study of this field, the chemical nature and directions of rational use of condensates is particularly relevant and modern. The purpose of the work is to conduct an audit of the polar Star drilling platform, study the operation of the installed equipment for the possibility of using hydrocarbon-based solutions. In the course of research and calculations, there were identified problematic equipment nodes that need to be completed. It is concluded that at the moment the Polyarnaya Zvezda oil drilling platform is not ready to use hydrocarbon-based solutions, but it is also not ready for safe and organized drilling operations. Without fixing the identified problem systems, drilling operations will be very difficult and environmentally unsafe.
Criteria and methodological approach to assessment of wastewater treatment methods
Authors: Korenchenkova Darya , Chulkin Sergey 
Published: November 2020

Abstract
When assessing water quality, there are several criteria. In the first place is the standardization factor, including limits on the withdrawal of water from sources, limits on the discharge of wastewater and the maximum mass of pollution for each ingredient. Further, water use implies three main types: 1) hygienic requirements for drinking water; 2) the quality of water for cultural purposes; 3) to the waters of fishery purposes. With the transition of Russia to the market, fundamentally changed attitudes towards ecology and raw materials, to technical policy, improving methods and means of wastewater treatment in order to extract useful elements from them and rational waste disposal. However, the problem of priority protection of domestic “know-how”, especially in environmental issues, aggravating the difficult social environment, remained relevant. Thus, there is a need to develop criteria and methods for minimizing costs while maintaining natural sources and wastewater treatment. There is a need to calculate socio-economic efficiency when it comes to the introduction of non-waste technologies related to the environment, which improves the social situation and the country’s prestige on a global level. Consider some points linking these problems with the solution of the problems of economics and ecology. It is necessary to highlight such aspects of the problem as: monitoring of harmful components, the cost-effectiveness of water treatment methods and the development of new methods for the production of effective sorbents and reagents. A separate article is the non-waste processes. In industrialized countries, the same problems exist that are often solved by rational disposal methods.