bluuebunny/crossref_metadata_2025_split huggingface dataset:
Energy management strategy of field power station based on differential hysteresis voltage stabilization
Authors: Wang Haisheng 
Published: June 2023

Abstract
The existing field power stations mainly use diesel generator sets for power supply, with poor power supply stability and no uninterrupted power supply capability. Therefore, a hybrid energy storage device is introduced into the field power station to improve it. According to the working characteristics of different energy sources, an energy management strategy based on differential hysteresis voltage stabilization is proposed. Hysteresis voltage stabilization control makes it true that the diesel generator set as the main energy source works for a long time, and the battery as a backup energy source works when necessary. Differential voltage stabilization control realizes coordination control of the two, which allows the battery to exit work smoothly. The strategy can get transient stability and stable economy, and extend the life of the battery. Simulation results show that this strategy is superior to the traditional hysteresis voltage stabilization strategy.
Anti-interference Performance of the Temperature Acquisition System for the Vacuum Thermal Test
Authors: Wen Jing , Feng Yao , Wu Dongliang , Zhu Xi , Liao Tao , Shen Bin 
Published: June 2023

Abstract
The thermal test temperature acquisition system is one of the core systems in the thermal test of the spacecraft. It uses thermocouple sensors for temperature data acquisition, and its data stability directly affects the success or failure of the thermal test task. The equipment types in the original thermal test environment were single, and the electromagnetic compatibility design was weak. With the increase of the types of test equipment in the thermal test, the electromagnetic interference in the test environment is becoming more and more serious and even directly affects the stability of temperature data collection. Based on the principle of thermocouple temperature measurement and electromagnetic compatibility, this paper establishes relevant models for analysis and simulation and obtains methods to improve system electromagnetic compatibility under different interference conditions. And in a certain thermal test, using the simulation results of the model, the corresponding circuit improvement was carried out, which finally reduced the influence of electromagnetic interference on the system and ensured the smooth progress of the task.
Fault Section Location Method for Distribution Network Based on Waveform Difference Clustering
Authors: Luo Hanjing 
Published: June 2023

Abstract
The conditions of single-phase grounding faults are variable in the resonant grounded system, and the traditional fault location methods of the distribution system based on a single characteristic quantity have their own discrimination blind area, and the reliability of the method is difficult to guarantee. In order not to be troubled by the problems, a fault section location method based on waveform difference degree clustering is proposed. According to the differential characteristics of transient and steady component waveforms of zero-sequence current at each detection point upstream and downstream of a fault point, the discrete Fréchet distance algorithm is used to quantify the transient waveform difference and steady-state waveform difference between adjacent detection points, and Fuzzy C-Means algorithm (FCM) is used to synthesize multi-feature information to distinguish the normal section from the fault section, which effectively eliminates the single feature location blind area and realizes adaptive fault section location. The PSCAD/EMTDC simulation results show the method is suitable for accurate location under different fault conditions.
Calcium carbide furnace batching system based on integral separation PID control
Authors: Zhou Dedong , Shi Dongdong 
Published: June 2023

Abstract
The precise ratio of raw materials and the uniformity of furnace charge mixing are the premise of calcium carbide quality, energy saving, and consumption reduction, which have a great influence on the operation of calcium carbide furnaces. Based on analyzing the batching equipment and the batching process, the mathematical model of the batching process is established and the model parameters are determined by the method of the soaring curve. According to the characteristics of the batching process, a quantitative feeding control system was designed by using an integral separation PID control algorithm, and PID controller parameters were determined by the empirical trial and error method. The practical application in the production field shows that the quantitative feeding control system designed in this paper can fully meet the precise ratio of raw materials and the uniformity of mixing charge of calcium carbide furnace.
Energy Efficiency Evaluation Method for Township Power Users Based on OLAP Technology
Authors: Yin Yucan 
Published: June 2023

Abstract
With the development of the smart grid and energy Internet, the traditional demand side response is further expanded to the integrated energy management of users, which puts forward higher requirements for the energy management level of users. The energy consumption structure of users has changed greatly. How to measure the rationality of energy consumption, reduce the cost of energy consumption, save energy, and improve efficiency is very important for users. Aiming at the energy efficiency evaluation of township power users, this paper constructs an index system including users’ energy utilization. It also establishes an evaluation method based on the NSGA-III algorithm combined with OLAP technology to measure the closeness between each energy use scheme and the optimal energy use scheme. Finally, through the example analysis and verification, the results indicate that the proposed energy efficiency evaluation method based on OLAP technology is reasonable. Energy efficiency evaluation can meet the needs of information interaction between users and the smart grid, and improve the energy efficiency and energy-saving effect of township power users through energy efficiency evaluation and management.
Control Technology of Smart Grid Considering Intermittent Power Uncertain Dispatch
Authors: Liao Feng , Lu Ying 
Published: June 2023

Abstract
The phenomenon of “anti-peak regulation” occurs when large-scale new energy is connected to the grid. The strange phenomenon of wind, light, and water curtailment at low loads occurs in areas with weak power regulation capacity, and the problem of peak regulation of the power system has become increasingly prominent. The typical scenario method is adopted to simplify the description of photovoltaic power generation output and hydropower station runoff. Then, considering the fluctuation of power production and output of the water and photovoltaic complementary system, the short-term multi-objective optimal dispatching model of the water and the photovoltaic complementary system is constructed with the objective of maximizing the average capacity coefficient and power generation load rate of the system on the premise of meeting the corresponding hydropower constraints. Finally, the simulation experimental platform is built. The multi-objective algorithm is used to solve the model. Through the case study, the complementary effect of intermittent power uncertain dispatching is analyzed, and the effectiveness of the model is verified. The dispatching mode can fully guarantee the collaborative optimization decision-making problem of a multi-microgrid with clean power. It can also effectively promote the acceptance level of clean power in the distribution network, and reduce the carbon emission of the distribution network.
Planning and Design of Building Electricity Based on Spatial Distribution Model
Authors: Li Youhua 
Published: June 2023

Abstract
Electrical equipment is ubiquitous in modern buildings, which not only provides great convenience but also produces a lot of energy consumption, which is contrary to the current purpose of energy saving and emission reduction. Under this background, the planning and design of building electricity based on a spatial distribution model are studied. In this study, BIM software is applied to build a building spatial distribution model. On this basis, the power supply and distribution system is re-planned, including the reasonable selection of transformer specifications and models, the selection and laying of cable conductors, and the improvement of the power factor. With the minimum energy consumption as the planning objective, the genetic algorithm is adopted to plan the operation scheme of the lighting electrical system and HVAC electrical system. The results verify that, according to the building electrical planning scheme based on the spatial distribution model, the energy consumption of the building is less in 15 hours, which illustrates the rationality of the planning scheme.
Path Following for UAV using Nonlinear Model Predictive Control
Authors: Chen Chao , Tan Jiali 
Published: June 2023

Abstract
For the fixed-wing UAV control system, the lateral path-following system is an important part, which ensures that the UAV flies stably in accordance with the predetermined route within a certain height. For the lateral path following of UAV based on nonlinear model predictive control, the model of the lateral kinematics of the fixed-wing UAV is established first, and then the path-following problem of UAV at a constant height is considered. The objective function with constraints based on the NMPC is established, and finally the nonlinear optimization algorithm is used to minimize the designed objective function. The optimal control quantity in the rolling interval is obtained. Matlab is used to simulate the designed controller and compare it with the commonly used L1 guidance law, and the results of the simulation demonstrate that the NMPC has superior control leverage.
A Weighting-Factorless Predictive Torque Control Method for Open-End Winding PMSM with Common DC Bus
Authors: Zhang Dongdong , Yu Junyong , Du Annan , Lin Xiaogang 
Published: June 2023

Abstract
The weighting factors (WFs) of conventional predictive torque control (PTC) are difficult to tune, which limits its practical application. When the conventional PTC is applied to the open-end winding permanent magnet synchronous motor (OEW-PMSM) with a common DC bus, there are three different units of variables that require prediction and control. Therefore, it is necessary to introduce two WFs to construct the cost function (CF), which increases the difficulty of realizing the control strategy. Sequential PTC adopts the idea of hierarchical optimization to avoid the introduction of WFs directly. In this paper, the sequential PTC structure is constructed to avoid the introduction of WFs. Then, the number of elements in the finite control set (FCS) of each layer is optimized to reduce torque and zero sequences current (ZSC) ripple, so as to achieve a better control effect. Finally, the effectiveness of the proposed sequential control strategy is proved by simulation.
FBG temperature measurement error compensation method based on LSTM and attention mechanism
Authors: Chen Yannan , Li Haitao , Kong Weiheng , Wang Lihui 
Published: June 2023

Abstract
Real-time temperature measurement of power cables is an important part of the power system, and improving the accuracy of temperature measurement is a key factor of the temperature measurement system. The measurement of existing measurement methods is susceptible to interference and has certain errors. In this paper, an error compensation model is established by using a two-layer LSTM network to view the dynamic error in the process of FBG temperature measurement, and the attention mechanism is used to capture the relevant parameters of temperature change, so as to improve the model effect. The experimental results show that the compensation effect of the two-layer LSTM-Focus model is increased by 44.4% compared with the single LSTM model, which can meet the actual measurement requirements.
Fault Traveling Wave Detection Method based on ICEEMDAN-MCKD
Authors: Zeng Jiachen , Ni Cong , Yu Kun 
Published: June 2023

Abstract
To address the challenge of calibrating the traveling wave-front for fault location in high noise environments, we propose an improved method that combines the ICEEMDAN and maximum correlation kurtosis deconvolution (MCKD). Our approach first decomposes the fault traveling wave signal into modal components using the ICEEMDAN algorithm. Next, the MCKD algorithm enhances the energy amplitude of the decomposed signal, suppresses strong background noise interference, and accurately calibrates the fault traveling wave-front. Simulation results demonstrate that ICEEMDAN-MCKD achieves precise calibration of the wave-front, exhibits strong denoising ability, and performs better than existing methods in terms of detecting traveling waves and minimizing wave-front determination time errors in noisy environments.
Ventilation and heat dissipation analysis of photovoltaic roof
Authors: Yin Zirui , Zhang Tao , Cai Jingyong , Fan Yi , Shi Zhengrong 
Published: June 2023

Abstract
In recent years, the development and utilization of new energy have attracted more and more attention. As a green and clean energy, the utilization and development of solar energy have attracted much attention. Moreover, solar photovoltaic (PV) technology has been vigorously promoted, with building-integrated photovoltaic (BIPV) technology widely used in the building sector. However, in BIPV, although PV modules can be used as building envelope materials and provide electricity for buildings, due to various conditions during installation and design, PV modules are prone to overheating problems and affect photovoltaic performance. Hence, in the present study, a novel type of PV roof structure with lightweight crystalline silicon PV modules installed on the building surface is proposed, and an air space is provided between the novel lightweight crystalline silicon PV modules and the building surface, the novel lightweight crystalline silicon PV module has the characteristics of thinness and flexibility. After that, an experimental test platform with air space is established, and the data of typical meteorological days are selected to analyze the electrothermal performance of the novel lightweight PV roof, to obtain the optimal structure with the best PV performance. The results show that, under the same conditions, when the spacing is 0 mm and 80 mm, the temperature of the backplane and the substrate of the PV module gradually decreases with the increase of the air space. In contrast, the PV power and electricity generation gradually increase with the growth of the spacing. At the same time, when the distance exceeds 40 mm, the changing trend of the backplane of the PV module temperature, the temperature of the roof substrate, and the electricity generation is not apparent. In the present study, the optimal spacing of the novel lightweight PV roof is 40 mm.
Experimental study and simulation of distributed photovoltaic heating asphalt system
Authors: Zhai Shuncai , Qing Chunyao , Wang Zhenzhong , Kong Lingchen , Liu Chunyu , Liu Shengyong 
Published: June 2023

Abstract
The traditional asphalt heating methods need to consume many fossil fuels, which conflicts with carbon peaking goals and neutrality. Therefore, replacing fossil fuels and improving heating efficiency is a realistic and severe task. This paper proposes a distributed photovoltaic heating asphalt system based on a literature review and field investigation of current asphalt mixing plants. The system rationally uses idle workshop roofs to lay solar photovoltaic modules for power supply. It replaces the natural gas boiler, heat conduction oil furnace, and asphalt heating tank with an integrated electric heating asphalt tank. The power generation capacity of the distributed photovoltaic power system and the electric heating asphalt heating process were tested and simulated, and the heat transfer characteristics of asphalt during heating were obtained. The results show that the daily generating capacity of the 39.6kW photovoltaic system is 135.8kWh, which can meet the heating demand of 3 tons of asphalt. The average asphalt heating rate increases to 19°C/h compared to the traditional heating rate. And no pollutants are produced during the whole process. Overall, the system can achieve remarkable efficiency improvement, energy conservation, and environmental protection.
Application of SAGD technology in the development of super heavy oil reservoir buried medium deep
Authors: Li Yujun 
Published: June 2023

Abstract
Continental super heavy oil reservoirs in China are characterized by deep burial depth, strong reservoir heterogeneity and high oil viscosity. The steam huff and puff technology are used to develop this type of reservoir, but in this development method, its oil recovery rate, oil steam ratio, and ultimate recovery are low. The benefit of the reservoir development is losses in this high cost per ton of oil. Many vertical wells injecting steam and one horizontal well-producing liquids pattern of SAGD technology (abbreviated as VERTIHORIONATAL pattern SAGD) were Innovated to solve the problems based on SAGD technology introduced from Canada. The SAGD technology introduced in Canada was made of double horizontal wells. The above horizontal well injects steam and the other horizontal well produces liquids continued (abbreviated as DOUBLE HORIZONTAL pattern SAGD). The VERTIHORIONATAL SAGD technology makes full use of the original well pattern of huff and puff and takes advantage of the thermal connectivity and underground temperature field formed by early development; At the same time, the VERTIHORIONATAL pattern SAGD technology can effectively solve the problem of steam cavity uneven expansion caused by reservoir heterogeneity by adjusting the location of steam injection vertical wells. It can also balance the liquid production in good horizontal sections and improve steam cavity formation speed by adjusting steam injection well sections and steam injection parameters. The technology has been successfully applied in the medium-deep super heavy oil reservoir in the Shu-1 area, Du84 block, Liaohe Oilfield. Seven oil wells with a daily output of 100 tons have been cultivated, and a stable production of million tons for four consecutive years. It has been built as China’s largest SAGD development demonstration area for medium-deep super-heavy oil.
Numerical Simulation of Flow Characteristics in Circulating Fluidized Bed Boiler
Authors: Zhao Bo , Yang Min , Cui Xutong , Bai Bingbing , Huang Fei , Gao Wanliang , Wang Lin 
Published: June 2023

Abstract
Considering the different particle sizes in the circulating fluidized bed boiler furnace, the binary-component method is used to analyze the flow characteristics in the circulating fluidized bed boiler furnace. The particle dynamics principle is used to solve the gas-solid two-phase mass equation, momentum equation and turbulence equation using the two-fluid model. The model uses more mature boiler design drawings, reproduces the flow characteristics of particles in the furnace, obtains the shape of the lower bubbling bed and the fast upper bed, and analyses the gas phase velocity and particle distribution in the furnace under the design parameters.
Numerical simulation on the re-injection capacity of drainage water in Area H of E gas field
Authors: Liu Chang-sheng , Si Lei-ting , Yu Wen-hua , Tian Hao-nian , Qin Yan , Zhang Ling-yun 
Published: June 2023

Abstract
The E gas field is a typical dense sandstone gas reservoir. It faces the problem of sewage treatment during production and development due to the influence of water formation. The H area with weak production capacity is selected for sewage re-injection and evaluating its re-injection capacity is a significant step before sewage treatment. In this paper, geological modeling and numerical simulation are carried out to evaluate the re-injection of the drainage water in Area H of the East E gas field, to maximize the amount of water injection within the acceptable range of the reservoir, and to analyze the leakage simulation of the two main possible leaky layers. The results show that: the formation rupture pressure in the study area is 42 MPa; the injection flow rate should be controlled at 60-80 m3/d, and the recommended injection wellhead pressure is 16-20 MPa; the leakage problem in He 7 sections should be considered in the subsequent wastewater re-injection.
Wind Power Interval Prediction Based on Robust Kernel Density Estimation
Authors: Xie Daiyu , Fu Yuan , Yang Sheng , Yang Youhui , Chen Mingyuan 
Published: June 2023

Abstract
Wind power output has a high degree of randomness, so it is difficult to describe it accurately with some typical probability distribution. The extreme values influence the sample’s general non-parametric kernel density estimation method, and the estimated results are relatively conservative. A wind power interval prediction method based on robust kernel density estimation is proposed to improve the compactness and accuracy of interval prediction. In probability estimation, this method will assign a small weight to the extreme sample data to reduce its influence on the probability density estimation accuracy and has better robustness than the general kernel density estimation method. In addition, the bandwidth of robust kernel density estimation is a dynamic parameter, which can be adjusted with the sample data to improve the prediction accuracy and avoid over-conservative prediction.
Influence of plasma parameters on the effectiveness of multi-cusp magnetic field confinement in negative ion sources
Authors: Candeloro V. , Sartori E. , Serianni G. 
Published: June 2023

Abstract
Cusp-shaped magnetic fields are widely used to confine plasmas in various
applications. This field configuration allows to localise plasma losses: the width of such loss
cone, usually called leak width, was found to be proportional to the geometric mean of the ion and
electron Larmor radii, so that it becomes smaller for increasing magnetic field intensity. At the
same time, plasma diffusion towards the walls is reduced in the regions where the field lines are
parallel to the surfaces, leading to the formation of a Plasma Exclusion Zone (PEZ) whose
characteristic dimension was found to be proportional to the distance between the magnets. Besides
field intensity and geometry, the confinement effectiveness might also be affected by plasma
properties such as electron temperature, plasma potential across the sheath and
collisionality. Specifically, this contribution describes a numerical analysis performed by means
of a 2D-3V Particle-In-Cell code of the dependencies of both the PEZ size and the leak width on
magnetic field intensity and plasma potential, focusing on typical conditions found in plasma
sources for negative ion beams. The leak width was found to be larger than its theoretical
prediction regardless of the specific plasma parameters. The PEZ was found to be affected not only
by the distance between the magnets. In particular, the plasma potential was found to strongly
affect the plasma behaviour within the cusp region.