High Voltage最新文献

Comparison of corona effect prediction criteria on sphere-plane configuration 球面配置的电晕效应预测标准比较

IF 4.4 2区工程技术

High Voltage Pub Date : 2024-07-31 DOI: 10.1049/hve2.12476

Manuel De La Hoz, Petrus Jacobus Pieterse, Agurtzane Etxegarai, Diego Gonzalez, Ángel Javier Mazon, Dirk Uhrlandt

{"title":"Comparison of corona effect prediction criteria on sphere-plane configuration","authors":"Manuel De La Hoz, Petrus Jacobus Pieterse, Agurtzane Etxegarai, Diego Gonzalez, Ángel Javier Mazon, Dirk Uhrlandt","doi":"10.1049/hve2.12476","DOIUrl":"https://doi.org/10.1049/hve2.12476","url":null,"abstract":"When designing high-voltage elements, knowing if the corona effect will be present during their life cycle is relevant. Therefore, designers consider several prediction criteria based on physical features related to breakdown discharge principles to predict the corona effect. The introduced practical set-up consists of a concave cone electrode with a hemispheric tip above a plate to evaluate selected corona prediction criteria. The hemisphere has a fixed diameter of 7 mm, and the electrode separation ranges from 2.5 to 39 cm. Information about the corona mode inception under different voltage sources was extracted using an intensified charge-coupled device camera and a partial discharge metre. The prediction criteria were connected to a specific corona mode depending on the main discharge structure behind its development. The average deviation between these criteria and experimental results was around eight percent. Underlying assumptions in criteria are also discussed in light of the experimental results.","PeriodicalId":48649,"journal":{"name":"High Voltage","volume":null,"pages":null},"PeriodicalIF":4.4,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/hve2.12476","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142007199","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

AC ripple on DC voltage: Experimental and theoretical investigation of the impact on accelerated ageing in electrical insulation 交流纹波对直流电压的影响：对电气绝缘加速老化影响的实验和理论研究

IF 4.4 2区工程技术

High Voltage Pub Date : 2024-07-30 DOI: 10.1049/hve2.12475

Giovanni Gardan, Gian Carlo Montanari

{"title":"AC ripple on DC voltage: Experimental and theoretical investigation of the impact on accelerated ageing in electrical insulation","authors":"Giovanni Gardan, Gian Carlo Montanari","doi":"10.1049/hve2.12475","DOIUrl":"https://doi.org/10.1049/hve2.12475","url":null,"abstract":"With the increasing penetration of DC systems into the high voltage and medium voltage power industry, DC voltage is becoming common for distribution/transmission and to supply different typologies of loads. The allowable extent of AC ripple superimposed to DC, and its effect on insulation ageing, is a long-term discussed topic. The most harmful phenomenon causing extrinsic ageing acceleration and insulation system premature failure is partial discharges (PD); thus, the risk of incepting PD due to AC ripple could become a primary issue for electrical asset equipment reliability. In this work, the impact of AC sinusoidal ripple on insulation system life and reliability is dealt with, considering both intrinsic and extrinsic ageing but focusing on the latter, that is, the PD aspect. Experiments are performed to assess how the jump voltage (due to AC ripple) and the DC component impact on PD activity in terms of amplitude and repetition rate. For the first time, the correlation between the magnitude of jump voltage associated with ripple and PD inception is established, shedding a light on the allowable ripple extent which does not impact significantly on ageing and premature insulation failure. This approach can provide straightforward tools for design specification and ageing inference of insulation systems.","PeriodicalId":48649,"journal":{"name":"High Voltage","volume":null,"pages":null},"PeriodicalIF":4.4,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/hve2.12475","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142007198","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ultrasonic localization method based on Chan‐WLS algorithm for detecting power transformer partial discharge faults by fibre optic F‐P sensing array 基于 Chan-WLS 算法的超声波定位方法，用于利用光纤 F-P 传感阵列检测电力变压器局部放电故障

IF 4.4 2区工程技术

High Voltage Pub Date : 2024-07-19 DOI: 10.1049/hve2.12472

Hong Liu, Tianhe Yang, Zhixian Zhang, Haoyuan Tian, Yuxuan Song, Qiuxia Sun, Wei Wang, Yunjun Geng, Weigen Chen

{"title":"Ultrasonic localization method based on Chan‐WLS algorithm for detecting power transformer partial discharge faults by fibre optic F‐P sensing array","authors":"Hong Liu, Tianhe Yang, Zhixian Zhang, Haoyuan Tian, Yuxuan Song, Qiuxia Sun, Wei Wang, Yunjun Geng, Weigen Chen","doi":"10.1049/hve2.12472","DOIUrl":"https://doi.org/10.1049/hve2.12472","url":null,"abstract":"Fibre optic F‐P sensor has become one of the mainstream detection methods for partial discharge faults due to their advantages of good insulation, high sensitivity, resistance to electromagnetic interference, simple structure and inexpensive pricing. The first‐order resonant frequency of the acoustically sensitive diaphragm of the F‐P sensor is given based on the theory of plate and shell vibration, and the fibre optic F‐P sensing array is designed based on the Fabry–Perot interference principle. A sensor installation method is also proposed for introducing a fibre optic F‐P probe into the power transformer interior using a fibre optic penetrator through flange at the power transformer oil change valve. A system of non‐linear equations is developed by utilising the time difference of arrival (TDOA) of the partial discharge ultrasound signal propagation to the F‐P sensing array. The Chan‐WLS algorithm is used to convert the non‐linear equations in the TDOA localisation method into a non‐linear optimisation problem to be solved and experimentally verified on the 220 kV real power transformer. The experimental results show that the error in the partial discharge fault localisation is solved based on the Chan‐WLS algorithm and the actual location is 20.27 cm, which is within the acceptable error.","PeriodicalId":48649,"journal":{"name":"High Voltage","volume":null,"pages":null},"PeriodicalIF":4.4,"publicationDate":"2024-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141822932","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modular digital twin modelling method for 10 kV cable lines based on real‐time temperature field inversion 基于实时温度场反演的 10 kV 电缆线路模块化数字孪生建模方法

IF 4.4 2区工程技术

High Voltage Pub Date : 2024-07-15 DOI: 10.1049/hve2.12465

Shijie Huang, Haiqing Niu

{"title":"Modular digital twin modelling method for 10 kV cable lines based on real‐time temperature field inversion","authors":"Shijie Huang, Haiqing Niu","doi":"10.1049/hve2.12465","DOIUrl":"https://doi.org/10.1049/hve2.12465","url":null,"abstract":"State perception of long‐span 10 kV cable lines is one of the critical issues in building intelligent distribution networks. Digital twin (DT), which can map the physical status of equipment in real‐time, has received extensive attention. However, traditional modelling methods cannot meet the requirement of long‐span complex DT's real‐time computation and scalability. In order to reduce the modelling cost and improve the calculation speed, a modular DT modelling method for cable lines based on real‐time temperature field inversion is proposed. The authors develop a modular reduced‐order modelling method that applies to long‐span 10 kV cable lines. Combined with the temperature field inversion, a DT inversion algorithm is proposed to evaluate the transient temperature field and contact resistance inside cable lines, which has been used to evaluate the emergency load capacity. Finally, temperature rise tests verified the DT inversion algorithm's correctness. The operating status of cable lines was evaluated through the modular DT, and the emergency time and emergency ampacity were calculated. The result shows that the new method meets the real‐time and high‐precision requirements of DT calculation in actual operation scenarios. It can be easily extended to cable lines of different voltage levels.","PeriodicalId":48649,"journal":{"name":"High Voltage","volume":null,"pages":null},"PeriodicalIF":4.4,"publicationDate":"2024-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141832819","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study on the terahertz domain dielectric relaxation response and mechanism of thermal‐oxidative aged cross‐linked polyethylene 热氧化老化交联聚乙烯的太赫兹域介电弛豫响应及机理研究

IF 4.4 2区工程技术

High Voltage Pub Date : 2024-07-11 DOI: 10.1049/hve2.12463

Mengqi Wang, Shihang Wang, Xinyu Li, Yang Feng, Jingran Wang, Shengtao Li

{"title":"Study on the terahertz domain dielectric relaxation response and mechanism of thermal‐oxidative aged cross‐linked polyethylene","authors":"Mengqi Wang, Shihang Wang, Xinyu Li, Yang Feng, Jingran Wang, Shengtao Li","doi":"10.1049/hve2.12463","DOIUrl":"https://doi.org/10.1049/hve2.12463","url":null,"abstract":"To further study the thermal‐oxidative ageing mechanism of crosslinked polyethylene (XLPE), the terahertz frequency domain dielectric parameters and relaxation phenomena of thermal‐oxidative aged XLPE are analysed using terahertz time domain spectroscopy. It is found that the real part of the terahertz dielectric constant increases with the increase of thermal‐oxidative ageing duration, and the imaginary part shows an overall upward trend. Relaxation of the complex dielectric constant of the aged XLPE samples is obvious. Through the second‐order Cole–Cole equation fitting, it is found that there are two relaxation processes around 0.15 and 1.5 THz, and the relaxation strength gradually increases with the ageing time. To explain this phenomena, microstructure changes and crystallisation behaviours are characterised using Fourier transform infrared spectrum and differential scanning calorimetry, respectively. It is suggested that the two relaxations may be caused by elastic dipole polarisation originating from the angular deflection of polar groups and stretching rotation of hydrogen bond. In addition, by comparing the relaxation strength in different temperatures, the source of the relaxation process is further confirmed.","PeriodicalId":48649,"journal":{"name":"High Voltage","volume":null,"pages":null},"PeriodicalIF":4.4,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141656601","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Safety monitoring method for powerline corridors based on single-stage detector and visual matching 基于单级探测器和视觉匹配的电力线走廊安全监测方法

IF 4.4 2区工程技术

High Voltage Pub Date : 2024-07-11 DOI: 10.1049/hve2.12464

Jinheng Li, Hanbo Zheng, Peng Liu, Yanshen Liang, Feng Shuang, Junjie Huang

{"title":"Safety monitoring method for powerline corridors based on single-stage detector and visual matching","authors":"Jinheng Li, Hanbo Zheng, Peng Liu, Yanshen Liang, Feng Shuang, Junjie Huang","doi":"10.1049/hve2.12464","DOIUrl":"10.1049/hve2.12464","url":null,"abstract":"Effective monitoring and early warning of overhead power lines are critical for ensuring power supply stability and personnel safety. However, existing methods that rely solely on single vision or light detection and ranging (LiDAR) have limitations such as numerous invalid alarms, hardware equipment constraints, and lack of real-time monitoring capabilities. This article proposes an intelligent monitoring method for safety distance of the powerline corridor based on heterogeneous sensor information. Firstly, an optimised single-stage detector is designed to detect safety hazard objects. In the detector, the backbone network and the sample matching strategy are improved; in addition, the learning strategy is adjusted. Next, the pose transformation relationship is obtained through the visual matching of prior LiDAR information and images. The back projection transformation of 2D–3D is achieved according to the relationship. Finally, a monocular camera-based end-to-end distance measurement scheme is proposed by combining 2D object information with coordinate transformation relationships. The scheme is applied to the distance measurements from hazard objects to powerlines. The experimental results show that the optimisation method improves the detection accuracy and reduces the computational complexity of the model. Also, case experiments with continuous frame data verify the effectiveness of the safety distance monitoring scheme.","PeriodicalId":48649,"journal":{"name":"High Voltage","volume":null,"pages":null},"PeriodicalIF":4.4,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/hve2.12464","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141657744","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mesh‐free Monte Carlo method for electrostatic problems with floating potentials 浮动势静电问题的无网格蒙特卡洛方法

IF 4.4 2区工程技术

High Voltage Pub Date : 2024-07-07 DOI: 10.1049/hve2.12468

Wenjing Yin, Yunqing Wang, Hong Deng, Jiawei Wang, Xiaoke Gao, Ruoyu Huang, Kun He, Weijiang Chen, T. Dong

{"title":"Mesh‐free Monte Carlo method for electrostatic problems with floating potentials","authors":"Wenjing Yin, Yunqing Wang, Hong Deng, Jiawei Wang, Xiaoke Gao, Ruoyu Huang, Kun He, Weijiang Chen, T. Dong","doi":"10.1049/hve2.12468","DOIUrl":"https://doi.org/10.1049/hve2.12468","url":null,"abstract":"Numerical simulation plays a crucial role in the analysis and design of power equipment, such as lightning protection devices, which may become inefficient using traditional grid‐based methods when handling complex geometries of large problems. The authors propose a grid‐free Monte Carlo method to handle electrostatic problems of complex geometry for both the interior and exterior domains, which is governed by the Poisson equation with a floating potential boundary condition that is neither a pure Dirichlet nor a Neumann condition. The potential and gradient at any given point can be expressed in terms of integral equations, which can be estimated recursively within the walk‐on‐sphere algorithm. Numerical examples have been demonstrated, including the evaluation of the mutual capacitance matrix of multi‐conductor structures and lighting striking near real fractal trees. The proposed method shows advantages in terms of geometric flexibility and robustness, output sensitivity, and parallelism, which may become a candidate for game‐changing numerical methods and exhibit great potential applications in high‐voltage engineering.","PeriodicalId":48649,"journal":{"name":"High Voltage","volume":null,"pages":null},"PeriodicalIF":4.4,"publicationDate":"2024-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141671274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analysis of electrical–thermal‐stress characteristics for eccentric contact strip in the valve‐side bushing of converter transformer 变流器变压器阀侧套管中偏心接触带的电气-热应力特性分析

IF 4.4 2区工程技术

High Voltage Pub Date : 2024-07-04 DOI: 10.1049/hve2.12467

Yongqi Wang, Kai Liu, M. Lin, H. Tang, Xining Li, Guangning Wu

{"title":"Analysis of electrical–thermal‐stress characteristics for eccentric contact strip in the valve‐side bushing of converter transformer","authors":"Yongqi Wang, Kai Liu, M. Lin, H. Tang, Xining Li, Guangning Wu","doi":"10.1049/hve2.12467","DOIUrl":"https://doi.org/10.1049/hve2.12467","url":null,"abstract":"Ultra‐high voltage direct current (UHVDC) transmission project in China is expanding, and the technology is increasingly maturing. The converter transformer is a crucial component in the UHVDC transmission projects, and its valve‐side bushing plays a key role in ensuring the stable operation of the power system. This paper investigates the electrical–thermal‐stress distribution characteristics of the contact strip in an eccentric state. The research focuses on a section of the contact strip in the plug oil at the tail end of the bushing on the valve side of the converter. A three‐dimensional finite element simulation model is established, and the contact strip contact resistance is used to define the contact strip eccentricity. The temperature rise platform of the contact strip was constructed to verify the precision of the simulation outcomes. The study investigated the variations in electric, thermal, and stress of contact strips in various eccentric states, as well as transient development, and the four stages of contact strip deformation were summarised using calculation results, providing quantitative analysis criteria for assessing the degree of deterioration of contact strips under eccentric conditions. Through the test and calculation, it can be seen that the contact resistance of the normal contact strip changes with the height in the form of a typical first‐order exponential function. The contact resistance value is between 200 and 400 μΩ under the actual mounting height; for the brand‐new contact strip, the maximum temperature difference is 2.984 K without other interference; and after 15 min, the maximum displacements of the upper and lower half‐ring strips reached are 84.3 and 83.7 μm, respectively, due to the thermal expansion. The study results offer a theoretical foundation for understanding the failure of elastic electrical connection components in the bushing on the valve side of the converter.","PeriodicalId":48649,"journal":{"name":"High Voltage","volume":null,"pages":null},"PeriodicalIF":4.4,"publicationDate":"2024-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141679254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of different anodised nanoporous structures on the anti‐icing and electrical properties of transmission Al lines 不同阳极氧化纳米多孔结构对输电铝线防冰和电气性能的影响

IF 4.4 2区工程技术

High Voltage Pub Date : 2024-07-04 DOI: 10.1049/hve2.12471

Xueying Dai, Yuan Yuan, Jie Xiao, Chenghao Jiang, Xujiang Hua, Huiying Xiang, Tao Zhu, Guoyong Liu, Jiang Zhou, Ruijin Liao

{"title":"Influence of different anodised nanoporous structures on the anti‐icing and electrical properties of transmission Al lines","authors":"Xueying Dai, Yuan Yuan, Jie Xiao, Chenghao Jiang, Xujiang Hua, Huiying Xiang, Tao Zhu, Guoyong Liu, Jiang Zhou, Ruijin Liao","doi":"10.1049/hve2.12471","DOIUrl":"https://doi.org/10.1049/hve2.12471","url":null,"abstract":"Ice accumulation of overhead transmission lines can lead to serious damage to power systems. Superhydrophobic nanostructured Al conductors are proposed to replace the de‐icing or ice‐melting equipment for economic advantages, good anti‐icing properties and robust electrical performance. Anodisation under different direct current densities is adopted to fabricate two nanostructures on Al conductors, including the reticular and honeycomb‐like nanoporous structures. Compared to pure Al conductors, the anodised surface of honeycomb‐like nanoporous structures exhibits lower ice adhesion (3.82 kPa) and ice accumulation. Aluminium conductor steel reinforced treated in the proposed method has also been validated to exhibit a significant anti‐glaze icing property. Additionally, corona performance and line loss are experimentally measured and calculated to prove good electrical performance. The 0.27 A Al strand shows the highest corona inception voltage (27.86 kV) and the lowest AC resistance (4.65 Ω/km), which is attributed to the good dielectric property and heat dissipation. Therefore, the proposed anti‐icing transmission conductors show profound application potential for power systems.","PeriodicalId":48649,"journal":{"name":"High Voltage","volume":null,"pages":null},"PeriodicalIF":4.4,"publicationDate":"2024-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141678087","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The relationship between power of arc discharge in transformer oil and peak value of the shock wave 变压器油中电弧放电功率与冲击波峰值之间的关系

IF 4.4 2区工程技术

High Voltage Pub Date : 2024-07-03 DOI: 10.1049/hve2.12462

Guangjin Zhang, Tianyu Han, Tao Wen, Yi Zhao, Weijiang Chen, Qiaogen Zhang, Jinzhong Li, Ke Wang

{"title":"The relationship between power of arc discharge in transformer oil and peak value of the shock wave","authors":"Guangjin Zhang, Tianyu Han, Tao Wen, Yi Zhao, Weijiang Chen, Qiaogen Zhang, Jinzhong Li, Ke Wang","doi":"10.1049/hve2.12462","DOIUrl":"https://doi.org/10.1049/hve2.12462","url":null,"abstract":"Since 2018, there have been seven incidents of explosions and fires in ultra‐high voltage transformers in China, which are caused by internal arc discharge in transformer oil. Various pressure measurement experiments have been conducted to explore the laws of discharge pressure. However, differences in experimental conditions, discharge energy, and current peak values have led to discrepancies in the discharge power and pressure laws in these experiments. Thus, it is crucial to investigate the relationship between arc discharge power and pressure peak in transformer oil. An arc discharge test platform was established to measure pressure waveforms based on the RLC circuit. Additionally, a shadow optical path observation system was implemented to record the development process of discharge arc, bubble pulsation, and shock waves. The study reveals the positive relationship between the average power and the peak value of the shock wave; the former refers to the breakdown and expansion stage of the arc channel, and the latter is generated by the discharge, respectively. Overall, the pressure generation mechanism of arc discharge in transformer oil and the relationship between arc discharge power and peak value of discharge pressure are revealed.","PeriodicalId":48649,"journal":{"name":"High Voltage","volume":null,"pages":null},"PeriodicalIF":4.4,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141680869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0