bluuebunny/crossref_metadata_2025_split huggingface dataset:
Adaptive identification method of new energy grid operation risk based on linear decision function
Authors: Xiong Xiaocui , Chen Songling , Fang Xiaoming , Zhang Mingnian , Zhang Xiaoming 
Published: September 2023

Abstract
The current conventional risk identification method of new energy grid operation mainly achieves risk identification by mining equipment status information, which leads to poor identification effect due to the lack of effective extraction of abnormal data features. In this regard, a linear decision function-based adaptive risk identification method for new energy grid operation is proposed. The data flow model is constructed by combining the linear decision function, and the features of interval abnormal data and fluctuating abnormal data are extracted. A sliding window model is constructed, and the unsupervised model is used to realize the effective update of new energy grid operation data. In the experiments, the proposed method is verified for recognition accuracy. The experimental results show that when the proposed method is used to identify the risk of grid operation, the effective data mis-deletion rate of the algorithm is low and has a more desirable identification effect.
Assessment Technology and Application of Wind Energy Resources in Complex Mountain Areas at High Altitude
Authors: Yang Pengcheng , Dai Liwei , Zhang Jun 
Published: September 2023

Abstract
Based on the meteorological stations and wind measurement data of a high-altitude region in Liangshan Prefecture, Sichuan Province, collation, analysis, and evaluation are carried out. The results show that: the prevailing wind direction in the region is stable and the wind energy resources have a certain development value, but the turbulence intensity is high and belongs to IEC Class B, which has a certain impact on the fatigue load of wind turbines, and the safety of local wind turbines needs to be reviewed.
Optimization Configuration of Distributed Multi-Energy Complementary Energy Systems
Authors: Wang Yang , Zhang Sheng , Yao Guangyuan , Wang Jingnan , Wu Jian , Lu Shian , Cheng Yunguo , Wang Qianggang , Dai Xuhui 
Published: September 2023

Abstract
This paper points out the uncertainty of existing optimization models due to factors such as environmental and equipment output, which have a significant impact on the accuracy and rationality of system planning. Therefore, this paper establishes a full-working-condition-mathematical model for distributed multi-energy complementary energy systems and constructs an optimization configuration mathematical model with the total annual cost of the system as the optimization objective. Subsequently, an energy supply equipment optimization configuration method for distributed multi-energy complementary energy systems is proposed. Finally, the effectiveness of the proposed optimization configuration method is verified through case studies. This research will have important guiding significance for the construction and operation of distributed multi-energy complementary energy systems.
Heating performance enhancement in panel-type radiators based on vortex generators and fin form optimization
Authors: Liu Zongjiang , Zhang Linhua , Xu Wei , Li Zhong , Feng Airong 
Published: September 2023

Abstract
Increasing the heat performance of heating radiators could be a valuable method for building energy conservation. This paper studied the influence of fins on the thermal performance of panel radiators (type 11). The effect of different vortex generator angles, the gap width of discontinuous fins, and different forms of staggered fins have been studied numerically and experimentally. Firstly, the simplified model of the panel radiator was analyzed by CFD simulation, the thermal performance under different geometric parameters was studied, and better geometric parameters were obtained. Research shows that optimizing the parameters of the vortex generator has a positive effect in increasing the heat dissipation of the radiator. Both discontinuous fins and staggered fins can improve the thermal performance of the radiator. The research shows that the fin shape has a significant impact on the heat dissipation of the radiator. The thermal performance of the radiator can be greatly improved by using a vortex generator with specific angles, staggered fins, and discontinuous fins. These technical routes can be directly implemented on the basis of the original radiator, which provides a direction for the technical improvement of this type of radiator.
First-Principles Simulations for the Effect of Zinc Ions on MnO2/water system
Authors: Liu Tong , Yuan Haonan , Su Yuefeng , Cao Duanyun 
Published: September 2023

Abstract
The aqueous zinc-ion battery (AZIB), with its excellent power density, high energy density, safety, and sustainability, is a potential energy storage device. Manganese dioxide (MnO2), as the cathode material of AZIB, has shown exceptional electrochemical performance due to its multiple valence states and outstanding ion storage performance. Nevertheless, the energy storage process of MnO2 remains controversial. In order to explain the energy storage process of MnO2 in AZIB, it is necessary to explore the effect of Zinc ions (Zn2+) on the structure of the MnO2/water interface at the atomic scale. The effect of Zn2+ on the structure of MnO2/water interface systems was examined in this work using molecular dynamics simulation. Two representative crystal phases of MnO2, including α-MnO2 and δ-MnO2, were considered. The results revealed that Zn2+ will affect the structural stability of the MnO2/water interface system, and the degree of structural deformation in MnO2 varies with its crystal phase. Moreover, Zn2+ for both the α-MnO2/water and δ-MnO2/water systems prefer to be stabilized at the interface near MnO2 and the water, forming a spinel-like product. These results offer a fresh understanding of the MnO2 energy storage process in AZIBs and can help in the development of high-performance cathode materials.
Full-Loop Study of a Pilot-Scale Dual Fluidized Bed Cold Flow System: Hydrodynamic Simulation
Authors: Chen Yexi , Xiang Wenguo 
Published: September 2023

Abstract
Computational particle fluid dynamics (CPFD) simulations of three-dimensional cold-flow gas-solid flow were performed for a pilot-scale dual-circulating fluidized bed (DCFB) using Barracuda Virtual Reactor® 17.4.0. This DCFB system is a fluidized bed gasifier used in a calcium-loop gasification process to produce a hydrogen-rich gas with CO2 capture. The effects of different bubble bed inlet airflow rates and different solid inventories on the full-loop pressure distribution and particle concentration distribution were compared. The increase in the bubble bed inlet airflow rate significantly increases the pressure in the bubble bed and lift pipe, and the increase in the solids inventory significantly increases the pressure where the solids are tightly packed. For long-term operation, the appropriate combination of parameters should be found to maintain a stable particle seal at the loopseals.
Offshore Electrical-Oil Production Coupling System Reliability Analysis
Authors: Wang Yongqian , Liu Liyuan , Li Shanshan , Zhou Bonan , Liu Xingyang 
Published: September 2023

Abstract
The role played by offshore oil resources in energy supply is becoming more and more important, and the normal operation of oil production system on offshore oil platforms requires the reliable operation of the electric power system as a prerequisite; the failure of the components in the oil production system may lead to a large-scale production shutdown, and cause the related electrical components to shut down, making the power system ineffective in a certain range. In this paper, a coupled system model of the electric power system and production system of an offshore oil platform based on massively parallel computing is proposed. By analysing the connection between the oil production system and the electric power system, the coupled system model is established and the load data are calculated. Meanwhile, the reliability model of the coupling components is established based on the fault data, and the electric-related reliability index and the production-related reliability index of the coupling system are proposed. The broad-first search (BFS) algorithm was used to determine whether the coupling nodes were powered, and the depth-first search (DFS) algorithm was used to determine the connectivity of the coupling system. In addition, a minimum load-shedding model based on the integrated fault degree is proposed to reduce the load shedding of the coupled system.
Multi-energy Complementary Power System Economic Dispatch Considering Carbon Emission and Regional User Coordination
Authors: Li Shanshan , Yang Xusong , Liu Bin 
Published: September 2023

Abstract
The integration of multi-energy complementarity and source-grid-load-storage is an important initiative to promote energy transformation and the high-quality development of power systems. This paper proposes a two-tier day-ahead multi-energy complementary power system economic dispatch model from the perspective of clean and low-carbon, taking into account carbon emissions and multi-regional user synergy. The model optimises the production and purchase of electricity through different decisions between the upper generation side and the lower user side, which minimises the energy production cost in the upper tier and the energy purchase cost in the lower tier, and achieves mutual benefits between the upper and lower tiers. This paper validates the algorithm and model with an improved IEEE 39-node system.
The Scaling Analysis and Numerical Simulation of Single-phase Natural Circulation
Authors: Luo Liqiang , Tao Hanzhong , Li Yannan 
Published: September 2023

Abstract
In this work, scaling analysis and numerical simulation of the single-phase natural circulation loop with water are presented. First, grid-dependency testing and model validation are performed. Then, according to the assumption of the boundary conditions, the effect of the heat input and structural parameters on the heat transfer characteristic is studied, including the boundary condition and temperature of the steam fluid. The results show that the scaling model can accurately express the flow heat transfer characteristics of the original model, and can reach a steady state under different working conditions. The formation of stable natural cycles is the result of coupling the boundary conditions of the heating and cooling segments under the fixed structure reference. The mass flow rate on the steady state decrease with the increase of the external fluid temperature in the cooling section, and as the heat transfer coefficient of the external convection heat transfer coefficient increases.
Benefit Analysis and Comparison of Electric Heating System for Municipal Central Heating
Authors: Qu Shipeng , Qi Liyong , Wang Fenglei , Li Zile , Xu Chen , Xiao Baihui , Qin Kaiyang 
Published: September 2023

Abstract
Electric heating can not only relieve the pressure of municipal central heating but also help to solve the problem of wind and light abandonment, which is an important direction for the future development of central heating. To maximize the comprehensive benefits, this paper constructs three kinds of electric heating systems. According to the comprehensive benefit evaluation of technical, economic, and environmental aspects, the comprehensive optimal scheme is selected. An office area in Beijing is taken as an example to determine the optimal scheme of electric heating and heating supplement. The results show that the comprehensive benefit of the heat pump + phase change accumulator system is the best, but the environmental benefit needs to be further improved. To promote the pace of electric heating and heating supplement, the government should increase the subsidies for electric boiler technology. At the same time, clean energy power supply enterprises should improve the trading mechanism of the electric heating market and reduce the price of clean energy heating.
Standardization proposal and product design of offshore floating photovoltaic system cables
Authors: Zhou Jialong , Liang Bin , Wang Guangliang , Jing Jixu , Li Dong , Huang Weide 
Published: September 2023

Abstract
The cable product for sea surface floating photovoltaic system is a waterproof cable with a highly comprehensive performance developed from the wiring application of the land photovoltaic system, which is mainly used for the electrical connection between modules of sea surface floating photovoltaic system, as well as the electrical connection of each assembly to the combiner box and combiner box to the inverter. This work introduced the main product types of photovoltaic cables in domestic and internationally, focusing on environmental adaptability, mechanical performance, and special waterproof performance analysis. On this basis, the standardization proposal for cables used in floating photovoltaic systems on the sea was proposed to facilitate the generalization, serialization, and standardization of such products, and further introduce the corresponding product design scheme, material selection, and process control, so as to provide reference for the cable manufacturing enterprises.
Research on improved linear auto-disturbance rejection control of hybrid energy storage in optical storage microgrid
Authors: Meng Lingzhao , Niu Shengsuo 
Published: September 2023

Abstract
Photovoltaic power generation has uncertainties such as randomness and volatility. In order to ensure the stable operation of the power system, hybrid energy storage technology is introduced to improve the voltage stability of the optical storage microgrid. Traditional PI control still needs some help in response speed and overshoot. Facing the hybrid energy storage microgrid system with nonlinear and strong coupling characteristics, in order to improve power quality and reduce bus voltage fluctuation and impact, this paper designs an improved active disturbance rejection control (ADRC) integrated energy storage control system based on a fuzzy algorithm, Based on the traditional double closed-loop PI control, the fuzzy LADRC is used to replace the voltage outer loop, and the system model is built on the MATLAB/Simulink platform for simulation. The results show that the proposed control strategy has a smaller overshoot, faster dynamic response time, and good anti-interference ability compared with the traditional PI and ADRC, which improves the dynamic performance of the photovoltaic energy storage system while stabilizing the bus voltage fluctuation and ensures the stable operation of the powergrid.
Experimental study on the energy loss from flow and electrical of vanadium battery with constant pump frequency
Authors: Sun Yanzhao , Zou Tao , Li Dianhong , Li Juntao 
Published: September 2023

Abstract
When the vanadium battery was running, pump frequency and current density were two frequently adjusted parameters. When the pump frequency was constant, the main flow-electrical parameter variation needs to be further studied. To this end, a 10 kW vanadium battery was built. When the current density was relatively high during the charge-discharge, the flow-electrical parameters of the cathode and anode including the temperature, flow resistance, turning voltage difference, capacity loss, energy loss and energy efficiency were studied. Besides, the compositions of capacity and energy were introduced, and the loss calculation scheme was proposed. Firstly, in flow analysis, the flow resistance was defined, which represents the flow state of the electrolyte. It was found that the flow resistance was nearly linear with the temperature. Secondly, in electric analysis, the turning voltage difference increased with the current density increasing. For the same current density, the total energy loss of charge was less than the discharge, and the energy loss of bypass was less than the internal resistance. With the current density increasing, the energy efficiency decreased. The research can be provided insight into the optimizing operation for the vanadium battery.
Remaining useful life prediction of sodium-ion batteries based on ICEEMDAN-CNN-GRU
Authors: Shi Yongsheng , Zhai Xinran , Hu Yujun 
Published: September 2023

Abstract
A hybrid battery remaining useful life (RUL) prediction model based on ICEEMDAN-CNN-GRU(M1) is proposed to address the nonlinearity and complexity of capacity degradation in sodium-ion batteries. Firstly, capacity attenuation data and some indirect parameters easily obtainable by sensors are experimentally measured. The original capacity sequence is reconstructed into a new one using the ICEEMDAN method to effectively suppress the influence of capacity regeneration and noise signals. Secondly, a hybrid CNN-GRU prediction model is constructed by leveraging the advantages of convolutional neural networks (CNN) in the field of data mining and gated recurrent unit (GRU) in time series prediction. Three sets of indirect parameters are used as inputs, and the reconstructed capacity is used as the output for RUL prediction model training with different starting points. Finally, the effectiveness of the algorithm is verified through data from three different rates, and the predicted indicators are better than those of traditional algorithms such as GRU, LSTM, and SVM.
A study of power storage configurations in residential communities in multiple scenarios accounting for battery degradation
Authors: Shang Liqun , Zhang Jiantao , Min Pengbo , Li Hongbo , Hou Yadong 
Published: September 2023

Abstract
The peak and valley load differences in residential communities are large, and there is a timing difference between the peak hours of load and photovoltaic power generation. As a result, power storage system deployment can employ photovoltaic output to lessen peak and valley load discrepancies. To make power storage design in residential areas more feasible, the research initially examines the influence of charging and discharging rate and depth on the life of power storage batteries to develop a dynamic loss model for power storage batteries and estimate the operational life of the system; secondly, as the goal function, the largest yearly net revenue is used to optimize the optimization of the power storage system; finally uses particle swarm algorithm to simulate the power storage system in residential communities under different operational scenarios. The results indicate that the residential district power storage system is more effective in the grid-connected scenario and validate the reasonableness and effectiveness of the model used, providing a reference for the planning and construction of residential district power storage systems.
Corrugation-like Triboelectric Nanogenerators Integrated Buoys for Wave Energy Harvesting
Authors: Guan Tangzhen , Wang Weichen , Wang Xinyu , Wen Chengxuan , Xu Ruijiang , Zhu Chuanqing , Zou Tao , Zheng Jiaxi , Xu Minyi , Wang Hao 
Published: September 2023

Abstract
Marine buoys, as the nodes of the marine monitoring system, play a vital role in monitoring marine activities, which can collect hydro-meteorological information for marine scientific research, offshore oil development, and construction of marine ports. However, sustainable and cost-effective power supply for marine buoys equipped with electrical devices is still a challenge. In this paper, the corrugation-like triboelectric nanogenerator (C-TENG) integrated with marine buoys was proposed, aiming at harvesting wave energy and powering marine buoys. The C-TENG consisting of corrugated plates, corrugation-like channels, aluminum electrodes, barrier sheets, flat plates, and polytetrafluoroethylene (PTFE) pellets, was capable of effectively converting the energy harnessed from waves into electricity. As a result of the ocean wave’s excitement, the sliding contact between the PTFE pellets and the aluminum electrode produced electron transfer via the triboelectrification effect and electrostatic induction. With the unique corrugation-like channels, the output of the devices was in the same phase, avoiding the electrical loss resulting from rectification. Furthermore, the power density of the 5 layers parallel-connected C-TENG units reached 21.95 W/m3, which was approximately 300% higher than the previous tower-like TENG. The experimental results prove that the proposed C-TENG may provide a possible solution for wave energy harvesting and marine buoy powering.
Optimal Scheduling Study of Multi-Source Power Generation System with an Electric Heating Unit
Authors: Yang Xiong , Zhang Xiaohong 
Published: September 2023

Abstract
This paper proposes an optimal dispatching strategy for a multi-source power generation system containing electric heating devices. A multi-source co-generation system model containing electric heating devices is constructed with the minimum integrated operating cost and the minimum variance of system output power as the multi-objective functions, and the system operating constraints and heat storage constraints as the constraints. A greedy algorithm is introduced and an improved NSGA-II algorithm is proposed to solve the model. After comparison, the integrated operation cost of the multi-source co-generation system with an electric heating device is reduced by 11.35%, the scenery utilization rate is increased by 22.15%, and the total power output volatility is reduced by 29.18%. The results verify the effectiveness and accuracy of the proposed optimal scheduling strategy and the improved algorithm.
An energy storage configuration planning strategy considering photovoltaic consumption
Authors: Zhou Zi Jian 
Published: September 2023

Abstract
The extensive access to new energy resources will influence the grid’s economic operation and reliable power supply. This text considers the planning problem of the power company’s configuration in the energy-storage system. And the planning goal is to maximize the comprehensive benefits of the power company. The comprehensive benefit model of new energy resource costs and related revenue of power companies, as well as the operational characteristics of photovoltaic and energy-storage equipments, is analyzed, and a comprehensive operational strategy for energy storage systems is constructed. Optimizing energy storage configuration plans and operational strategies for power companies can improve the operations’ economic benefits and the utilization level of new energy generation.
Low Frequency Oscillation Suppression Strategy in New Power System Based on Virtual Synchronous Generator
Authors: Lu Shengyang , Zhang Wuyang , Han Deyun , Wang Huibin , Meng Linglin , Yan Zhenhong , Cai Yupeng , Wang Haixin , Yang Junyou , Sui Yuqiu 
Published: September 2023

Abstract
With the blend of massive new energy into power network systems, the inertia and damping features of new power systems are reduced, which is prone to cause low-frequency oscillations (LFO) in the power systems. Virtual synchronous generators (VSG) have received widespread attention by simulating the external characteristics of synchronous generators (SG) to enhance the inertia of new power systems and help suppress low-frequency oscillations. By analyzing the mathematical model of VSG, the control links of each part of VSG are established, the traditional reactive power-voltage (Q-V) of VSG is improved, and the formulas of active voltage control and reactive power control droop coefficient are deduced.
Finally, a simulation model of VSG is created by MATLAB/Simulink platform, and new methods for suppressing LFO in power systems are compared and analyzed. The correctness of the formula and the improvement effect of reactive power and voltage control are verified.