bluuebunny/crossref_metadata_2025_split huggingface dataset:
Research on optimal dispatching method of power systems with high proportion of clean energy based on multi-energy complementarity
Authors: Gou Jing , Wang Xi , Su Yunche , Yang Xinting , Li Ao , Jin Zhibo , Li Huaqiang 
Published: April 2020

Abstract
The rapid development and large-scale utilization of clean energy is not only conducive to alleviate the global fossil energy crisis, but also brings huge economic and environmental benefits. However, the uncertainty of new energy represented by wind power and photovoltaic power brings a lot of impact on the operation and dispatching of the power system. Hence, it’s urgent to explore a new dispatching mode adapted to the power system with high proportion of clean energy. The optimal dispatching method of power system with high proportion clean energy based on multi-energy complementarity is explored with goal of making full use of clean energy and reducing the operating cost. Particle swarm optimization algorithm and branch and bound method are used to solve the cascade hydropower optimal dispatching problem and the wind, photovoltaic, thermal power joint optimal dispatching problem respectively. Finally, the feasibility of the model is verified by an example.
Short-term electricity price forecasting G-LSTM model and economic dispatch for distribution system
Authors: Lyu Zheng , Wang Yushan , Wang Jiayu , Zhang Lin , Shen Jian , Wang Xu 
Published: April 2020

Abstract
In electricity market, electricity prices play an important role. The short-term electricity trading accounts for a large part in the market. Thus, this paper studied the short-term electricity price forecasting and proposed a new method -- G-LSTM (LSTM with error correction using GARCH model). Using this model, we achieve good performance on the LMPs (locational marginal prices) forecasting in the PJM power market. And based on our electricity price forecasting results, we calculate the ED (economic dispatch) plan of an IEEE 33-bus distribution system which contains wind power generation and photovoltaic power generation as an example.
Energy management strategy of marine lithium batteries based on cyclic life
Authors: Chen Rong , Yu Wanneng , Zhu Yonghuai , Wang Jinduo 
Published: April 2020

Abstract
In recent years, pure electric ship research has become a hot spot in the field of ship research, and lithium battery packs are a major difficulty in the research of pure power ships. Especially the life and safety problems of lithium battery packs seriously affect the future practical application of ships. Therefore, the energy storage system is designed as two sets of lithium battery packs. While increasing the energy of the energy storage system, the power supply of the battery pack is ensured, which not only ensures the safety of the pure electric ship, but also reduces the aging reaction rate of the lithium battery pack. Through the multi-energy ship modeling, specifically related to the control and safe operation of lithium battery packs, a lithium battery pack energy management strategy is provided. The specific scheme is: the model of ship sailing mileage and SOC is established by the theory of energy conservation, the lithium battery aging model is obtained by the lithium battery data of the actual pure electric ship navigation, and the lithium battery pack energy switching based on the mileage aging battery model is proposed. The strategy uses a logic threshold optimization algorithm to reduce the aging rate of the lithium battery pack. Finally, the experimental results show that the lithium battery pack with energy management strategy can perform 400 more navigations when the capacity loss reaches 15% in the same environment. It shows that this strategy is beneficial to improve the cycle life of lithium battery packs.
Analysis on the impact of new energy automobile industry support policy on regional economy
Authors: Yu Yue , Jiang Jun 
Published: April 2020

Abstract
From 2008 to 2018, the Chinese government has issued more than 200 policies on new energy automobile industry at the national, provincial and municipal levels in the past ten years. These policies systematically guide the new energy automobile industry to develop vigorously from the aspects of comprehensive promotion, energy-saving layout, price, charging equipment and batteries, subsidies, tax exemption, loans and investment, etc. The implementation of the support policy in the relevant areas of the development of new energy automobile industry will have a tremendous impact on the environmental protection, taxation, employment, scientific research, Power industry and related industries in the relevant areas, thus bringing the regional economic development to a new climax.
A dynamic analysis on global biomass energy trade network
Authors: Yang Xu , Li Xingjiang , Yan Fuhai 
Published: April 2020

Abstract
In recent years, increasing attention has been paid to the development of biomass energy. Global biomass energy trade plays an important role in this development process. However, due to the uneven distribution of biomass energy supply and demand, as well as different policies in different regions, the development of biomass energy, to some extent, has been affected. Thus, it is essential to investigate the evolution mode of global biomass energy trade, so as to promote its balanced development and sustainable growth. In this paper, we analysed the dynamic evolution of global biomass energy trade from 2011 to 2017 based on complex network theory and some conclusions were given. Firstly, the results show that the overall volumes of biomass energy trade is on the rise, but its mode tends to be low density with a large volume of trade concentrated in some countries. Secondly, it is worth noting that European countries and the North America are more active in global biomass energy trade, while only a small number of developing countries, like Brazil, China and India, have certain influence on the biomass energy trade. Thirdly, it seems that most countries prefer to establish biomass energy trade export relationships with other countries rather than import. Finally, given the poor performance of both in-degree and out-degree in the Middle East and North African regions over time, more attention should be paid to the development of biomass energy in these areas. The main contribution of this paper is to understand the market evolution of global biomass energy trade in 2011-2017 from the perspective of complex networks, being a supplement to the existing researches on biomass energy trade.
Economic analysis of natural gas distributed energy system for data center in Shanghai
Authors: Wang Shipeng , Zhao Dazhou , Ke Dongdong 
Published: April 2020

Abstract
Energy consumption of the data center is one of the main constraints for the development of data centers in developed regions. Shanghai has clearly defined the conditions and requirements for the construction of the data center. Through the scheme demonstration and economic analysis of gas distributed energy stations for the data center in Shanghai, the energy economy is the main factor restricting the gas distribution energy supply for the data center. Under the current background, the gas distributed energy station for the data center in Shanghai is more suitable for the construction of third-party investment operation and maintenance entities, which can significantly reduce the power usage effectiveness of the data center, although the annual energy cost of the data center increase significantly. At the same time, gas distributed energy stations need to pay attention to expand winter heat users and improve the equivalent utilization hours of energy stations to achieve greater economic benefits.
Study on heat transfer between the rod and the environment under conditions of forced convection
Authors: Eremin A V 
Published: April 2020

Abstract
Obtaining analytical solutions to unsteady heat conduction problems is of great scientific and practical interest. Such solutions make it possible to do an in-depth analysis of thermal processes, such as isotherm fields analysis, study of the thermally stressed states of structures, parametric identification, etc. This article deals with a simple method for obtaining approximate analytical solutions of one-dimensional heat conduction problems. In particular, an algorithm for solving the problem for a rod (plate) with a given boundary condition of the third kind on one of the surfaces is presented. It is shown that solving the equation at isolated points of the spatial variable allows obtaining the high-precision solutions to this problem with a minimum amount of computational work. The relations for determining the temperature have a simple form and do not contain special functions and parameters. It should be noted that the exact solution to a similar problem based on the Fourier separation method is an infinite series containing eigenvalues (roots of the transcendental equation).The practical application of such solutions is very limited. The paper also contains the convergence analysis of the method, the residuals of the initial differential equation for various approximations. The method developed can be used to solve more complex problems that allow separation of variables in the initial l differential equation.
Preparation of the forecasted fuel and energy balance of a boiler in an inadequate data condition
Authors: Guzhov S V , Gasho E G , Shepel V A 
Published: April 2020

Abstract
The task of fuel and energy balance preparation for heat energy sources in inadequate data conditions is an urgent issue, especially for the outdated boilers. It is difficult to use formulas for physically worn-out systems description, mainly because thermotechnical characteristics of the insulating components have significant deviations from the standard values. Boiler’s equipment physical depreciation increases greenhouse gas emissions into the atmosphere. Therefore, dealing with modernization funding feasibility of the heat energy sources, and also for periodic adjustment works that help to reduce harmful substance emissions into the atmosphere, requires the use of a fairly complete mathematical model of a boiler and a heat network. However, the lack of data makes it very difficult to formulate a reliable model. Status analysis of every element in the system is a labor-intensive and expensive task. Another extremely labor-intensive issue is a determination of the forecasted thermal energy demand of the municipal consumers and sector of housing and public utilities. Physically worn-out buildings have low thermal resistance, which increases heat demand. Calculation of the necessary amount of heat generation by the worn-out boilers for the city districts with worn-out buildings is difficult due to lack of a wide range of data about the boiler’s condition, network condition, and heated buildings condition. The paper presents the predictive energy balance preparation method using the statistical method of information processing only.
An elaborated diffusion mathematic model of radiative transfer in an extinction medium
Authors: Kuznetsov V A , Trubaev P A , Ryazancev O A 
Published: April 2020

Abstract
The computational method of diffusion approach, used sometimes for simulating the radiative heat transfer, differs in simplicity of its algorithm, but can not take ac-count of radiation anisotropy. The reasons of its insufficient accuracy have been re-vealed; it is shown that inadequate boundary con-ditions produce unpredictable er-rors. Ways for eliminating short-comings of the diffusion method have been developed. The accurate diffusion model has been theoretically elaborated for radiative heat transfer in dust-laden gases. To eliminate singularity of temperature curves on the surface of confining walls, the en-closed extinction medium was hypothetically considered as an unbounded one. The radiation intensity has been expanded in a se-ries and integrated over the spherical solid angle, what has allowed to obtain more precise differential equation for the resulting radiation flux both in the unbounded and enclosed extinction medium. As a result, shortcomings peculiar to the previous method of diffusion approach have been eliminated, and correct Neumann and Robin boundary conditions have been formulated. As a result, the elaborated diffu-sion model got the increased accuracy in simulating radiative heat transfer, and con-currently it offers an advantage of simplicity and universality of the diffusion ap-proach method.
Features of the functional reliability of 0.4-10 kV distribution networks
Authors: Byk F L , Myshkina L S , Sabadash I A 
Published: April 2020

Abstract
The article is devoted to the study of the influence of regime restrictions on the functional reliability of distribution networks of 0.4-10 kV. This level of the network is largely determining the values of indicative indicators of reliability of power supply. In the work, by the example of the analysis of the reliability of power supply of two energy regions, the significance of the influence of the regime factor on the uninterrupted power supply is proved. Due to the complexity of the topology and the variability of the flow distribution, it is proposed to use the decomposition method for calculating the reliability and recoverability of network nodes. The expediency of calculating indicative indicators of the reliability of electricity supply at the stage of network design is shown, since today, in Russia, the economic efficiency of the functioning of territorial network companies is largely determined by the level of reliability due to the existing relationship between reliability indicators and the tariff for the transmission of electric energy.
Energy efficient multi-circuit cogeneration plant
Authors: Stepanov S F , Kovalenko V V , Kovalenko P V , Artyukhov I I , Mirgorodskaya E E , Mityashin N P 
Published: April 2020

Abstract
The paper reviews an energy efficient multi-circuit power plant with three independent power generation circuits and a generator control system. The proposed three-circuit autonomous power plant was constructed in accordance with a modular design. The structural scheme, design, operating modes, and simulation model in the Matlab+Simulink environment is presented. The increase in electrical efficiency at this cogeneration plant is due to the use of low-temperature boiling point heat-transfer fluids. This article proposes the method of increasing the efficiency of an existing installation from 60 kW to 100 kW by equipping it with additional equipment. This equipment provides deeper utilization of flue gas heat. If the base power plant is 60 kW, the heat input is about 200 kWh (an efficiency of the station is 30%), then the total electricity generation will be 100 kW. In this case, an additional 40 kW of power is without increasing fuel consumption.
The usage of organic wastes of malt and lysine-sulphate production for reclamation of soils, contaminated with petroleum products
Authors: Vasilenko T A , Efremova O V 
Published: April 2020

Abstract
This paper presents the research findings of using two organic wastes – from feed additives production and malt production, which can optimize the process of soil remediation from petroleum products. The experiment was performed in situ with applying in the soil, contaminated with petroleum products (industrial oil), the excess sludge of malt production waste biological purification (1.8 or 3.6 kg/m2 was applied). The organic matter content in the sludge was 31.79 %. With account of the high initial concentration of petroleum products (3100−8600 mg/kg) and their degradation during a short-term experiment (21 days), a conclusion was made, that the excess sludge of wastewater biological treatment had the potential for remediating soils from petroleum products. The percent reduction made up from 16.12 to 85.64% (at applying 0.44 kg/m2 of petroleum products) and 20.37; 33.72 and 89.03 % (at applying 0.66 kg/m2 of petroleum products). From the second waste product, which contained 83.0 % of organic matter, − corn-steep extract purification sludge, − a water extract was obtained. It has been determined that the cell colonies, which appeared from this extract (8-fold dilution) in the agarized growth medium in the presence of used petroleum products, are not inhibited, and petroleum products become a source of biogenic carbon for them.
Method development of the integral specific failure rate determination considering time in service and diameter of gas pipelines
Authors: Golovach Yu A , Kornilova N V 
Published: April 2020

Abstract
Gas consumption increase and also a large scale of gas-distributing networks create new and ever more challenging problems for the engineers, associated with the development and modernization, safety and reliability improvement of the systems. These problems can be solved only by using new technologies and methods of calculation. Analysis of the statistical data on the underground distributing gas pipeline damages in the Gorlovka city of Donetsk region revealed that most of the failures are from the corrosion damage. Based on the statistical data on all types of the underground gas pipeline damages, which is the source of the gas leak, the determination method of integral specific failure rate was developed considering time in service and diameter of the gas pipelines. This method is based on the determination of the optimal step of the gas pipeline time in service, during which the failure rate is taken as constant, and on the integral specific failure rate calculation. It was discovered that the integral specific failure rate depends on the gas pipeline diameter and its time in service. Due to the fact that the coefficient SDR jumps at the diameter 219x7 mm, the dependence equation of the integral specific failure rate on time in service and diameter of the gas pipeline is derived for two diameter ranges 57-159 mm and 219-530 mm. The diameter decrease and the time in service increase lead to the integral specific failure rate increase.
Trade-off working fluid selection for heat pumps
Authors: Karnaukh V V , Mazur V A , Biryukov A B , Rzhesik K A 
Published: April 2020

Abstract
Nowadays heat pump systems are used to recover the heat from waste water from different sources and produce hot water for household and communal purposes. In this research comparative thermodynamic analysis of performance for a water-to-water single-stage vapor compression heat pump using several HCs, HCFCs and HFCs which belong to refrigerants of different generations is presented. A multi-criteria approach for optimal selection of refrigerants was used as scientific tool. Results of theoretical experiments of vapor compression heat pump system with the evaporator temperature range 0…25°C and condenser temperature 60°C and 83°C showed that the COP of R1234ze was higher than that of R600a, R152b by about 6.7…17.3%, 8.25…20.5%, and 1.7…14.4%, respectively, at condenser temperature 60 °C; however results are different if at condenser temperature is 83°C: the average COP of R600a was higher than that of R1234ze and R152b by about 7.7…14.7%, 9.3…15.8%, and 7.5…15.6%, respectively. COP displays a positive correlation with the evaporator temperature as well as a negative correlation with the condenser temperature. The complete analysis of all factors, including environmental safety, indicates that R1234ze and R600a refrigerants should be preferred as the working fluids for using in the water-to-water single-stage vapor compression heat pump for the hot water supply and heating purposes in industrial applications.
On the potential use of basalt waste as mineral fillers
Authors: Petropavlovskaya V B , Novichenkova T B , Zavadko M Y , Petropavlovskii K S 
Published: April 2020

Abstract
Producing present-day constructional materials on mineral binders is directly connected to the use of micro- and ultra-disperse technogenic modifying agents. They allow to obtain the maximum particle-particle packing in composition, provide rational raw mix design, contribute to structure formation process. The present article is devoted to the investigation of searching the most rational solution for the problem of basalt waste utilization, with the basalt waste being the valuable secondary raw material resource. The studies have shown that it is possible to use basalt dust as admix to gypsum composites. The basalt waste, by changing the composition grain-size distribution, provides the better particle-particle packing both for finegrained and coarse waste fractions, thus having positive effect on modified gypsum rock structure. Optimization of internal structure also contributes to the increase of gypsum rock strength properties. The obtained gypsum composite can be profitably employed for manufacturing small-piece walling gypsum materials by casting process.
Energy efficiency increase of the initial milk processing
Authors: Samarin G N , Vasilyev A N , Normov D A , Eventeva E A , Mamahay A K 
Published: April 2020

Abstract
Condition of the dairy industry in the Russian Federation over the last years is characterized by a long-standing and continuously deepening downtrend in dairy production and cow population decrease. From the present day perspective, main objective for Russian live-stock farmers, in the context of an import phaseout, is a dairy production increase. Presently at dairy farms in the Russian Federation 99% of freshly drawn milk is being cooled to 4.5°C by a refrigeration method. Refrigerators are complex machines that require skilled workforce for maintenance and operation, consume large amount of electrical energy (3.4 kWh per 100 kg of milk to cool down from 40 to 5°C). Price increase for energy resources, including electricity, is happening in all countries. Price increase is an objective process since commercial mineral deposits run short, their extraction decline, and price tag for extraction and delivery to the place where it can be processed and consumed is increasing. Within this context, any research study that focuses on specific energy resources decrease, including energy consumption for milk production and processing, is a critical task for the present day and for the foreseeable future.
Analysis of the effect of detergent additives on fuel on the performance of a diesel engine
Authors: Shabanov A Yu , Galyshev Yu V , Zaitsev A B , Sidorov A A 
Published: April 2020

Abstract
In work questions of influence of composition of basic diesel fuel on overall performance of the washing additives on the basis of results of motor tests are considered. The received results show need of individual selection of concentration of additive depending on composition of basic fuel. The analysis of results allowed to draw a conclusion on existence of an optimum ratio of concentration of additive and composition of basic fuel at which receiving the maximum effect of input of additive at preservation of the acceptable prime cost of the final product of fuel is possible. This conclusion is supported by the results of comparative stand tests of diesel engine firing fuels that significantly differ in basic physicochemical parameters. The tests have been conducted on laboratory test stand equipped with hydraulic dynamometer coupled with full-sized diesel engine type KAMAZ-740.10. Such arrangement enabled operation at any point within allowed zone of engine load/speed map.