High Voltage最新文献_第9页

An experimental proof of concept of time-reversal single-sensor acoustic source localisation: Application to partial discharges 时间反转单传感器声源定位概念的实验证明：应用于局部放电

IF 4.9 2区工程技术

High Voltage Pub Date : 2025-03-05 DOI: 10.1049/hve2.70008

Hamidreza Karami, Zhaoyang Wang, Parsa Khorasani, Javad Zohrevand, Marcos Rubinstein, Farhad Rachidi

{"title":"An experimental proof of concept of time-reversal single-sensor acoustic source localisation: Application to partial discharges","authors":"Hamidreza Karami, Zhaoyang Wang, Parsa Khorasani, Javad Zohrevand, Marcos Rubinstein, Farhad Rachidi","doi":"10.1049/hve2.70008","DOIUrl":"10.1049/hve2.70008","url":null,"abstract":"In this paper, for the first time, an experimental proof of concept for utilising time reversal (TR) in the acoustic regime to localise partial discharge (PD) sources was presented using a single sensor. To achieve this, an experimental setup comprising a water tank, acoustic transducers for signal transmission and reception, and 2D scanners was developed. The performance of the proposed method was evaluated across various scenarios, encompassing different PD source locations and sensor placements, barriers obstructing the line of sight between the receiving sensor and PD sources, varying levels of noise, and different frequency bandwidths for the PD sources. The experimental results demonstrate a near-zero localisation error in all considered examples. The achieved resolution was approximately half of the minimum wavelength. Furthermore, the acoustic TR method exhibits remarkable precision in source localisation, even when faced with obstacles such as a multi-layered metallic cylinder and in scenarios lacking a direct line of sight between the sensor and the source. The accuracy of acoustic TR's localisation remained robust in the presence of noise, showcasing resilience at signal-to-noise ratio levels as low as −20 dB. Additionally, the performance of the acoustic TR method remained consistent across a broad frequency spectrum, spanning from 60 to 200 kHz.","PeriodicalId":48649,"journal":{"name":"High Voltage","volume":"10 2","pages":"351-361"},"PeriodicalIF":4.9,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/hve2.70008","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143892893","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

Severity assessment of local ageing defects in cross-linked polyethylene cables based on the high-voltage frequency domain spectroscopy non-linearity and its sensitivity analysis 基于高压频域谱非线性及其灵敏度分析的交联聚乙烯电缆局部老化缺陷严重性评估

IF 4.9 2区工程技术

High Voltage Pub Date : 2025-02-24 DOI: 10.1049/hve2.12518

Haoyue Wang, Meng Li, Yiyi Zhu, Jinghan He, Chengrong Li, Xiaowei Wang, Maolun Sun

{"title":"Severity assessment of local ageing defects in cross-linked polyethylene cables based on the high-voltage frequency domain spectroscopy non-linearity and its sensitivity analysis","authors":"Haoyue Wang, Meng Li, Yiyi Zhu, Jinghan He, Chengrong Li, Xiaowei Wang, Maolun Sun","doi":"10.1049/hve2.12518","DOIUrl":"10.1049/hve2.12518","url":null,"abstract":"Local ageing defects are the main causes of cross-linked polyethylene (XLPE) power cable faults. This research aims at assessing the severity level of typical cable local ageing defects based on the high-voltage frequency domain spectroscopy (FDS) non-linearity. Experimentally, typical XLPE cables ageing defect conditions are simulated, with different ageing types, degrees, and local proportions. Then, the high-voltage FDS detection is conducted and the results have been analysed. It has been found that the high-voltage FDS non-linearity is only related to the detection voltage and ageing degree. Especially, it is more sensitive to changes in the ageing severity. Thus, the local ageing defect severity assessment method based on non-linearity has been established. Additionally, the sensitivity has been compared between two diagnostic evaluation methods: the high-voltage FDS and the widely used very-low frequency method (VLF, 0.1 Hz). It can be concluded from the comparison result that the proposed assessment method has higher sensitivity than that of the traditional methods. Finally, the effectiveness of the proposed method for evaluating the on-site long cables has been validated. The result demonstrates that the proposed method can assess on-site long cables and has the potential to be formed as quantitative standards.","PeriodicalId":48649,"journal":{"name":"High Voltage","volume":"10 2","pages":"385-399"},"PeriodicalIF":4.9,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/hve2.12518","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143892904","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

Infrared image-based multi-point temperature monitoring for ultra-high-voltage direct current wall bushings subject to insulation shed interference 基于红外图像的绝缘棚干扰超高压直流套管多点温度监测

IF 4.9 2区工程技术

High Voltage Pub Date : 2025-02-24 DOI: 10.1049/hve2.70007

Huajie Liang, Ziyou Li, Zhaocong Liu, Qiang Li, Shihong Zhang, Zhenyu Zhang, Jinxiong Wang, Jianbo Jiang, Chichun Zhou

{"title":"Infrared image-based multi-point temperature monitoring for ultra-high-voltage direct current wall bushings subject to insulation shed interference","authors":"Huajie Liang, Ziyou Li, Zhaocong Liu, Qiang Li, Shihong Zhang, Zhenyu Zhang, Jinxiong Wang, Jianbo Jiang, Chichun Zhou","doi":"10.1049/hve2.70007","DOIUrl":"10.1049/hve2.70007","url":null,"abstract":"Ultra-high-voltage direct current wall bushings are critical components in direct current transmission systems. Temperature variations and abnormal distributions can signal potential equipment failures that threaten system stability. Therefore, monitoring these critical multi-point temperature variations is essential. However, the unique design of the bushings, featuring insulation sheds of periodic shape, distorts infrared temperature measurements by introducing interference points. These interference points, dependent on the measurement's angle and distance, appear irregularly in infrared images, severely impacting the accuracy of multi-point temperature distribution assessments. To address this challenge, an anomaly detection method is proposed that adaptively identifies interference points. The method identifies interference points by comparing pixels and uses a voting mechanism to improve identification accuracy. Compared with traditional methods, this approach presents two main advantages: adaptive identification capability, which enables it to recognise interference points and adapt to changing conditions, and unsupervised learning, which enables it to work effectively without requiring manually labelled data. Experimental tests on 161 bushing infrared images demonstrate the effectiveness of the method, achieving a 100% success rate in identifying localised overheating issues. The method has been integrated into high-voltage direct current transmission anomaly systems and can be used to monitor critical equipment, enhancing system reliability and safety.","PeriodicalId":48649,"journal":{"name":"High Voltage","volume":"10 2","pages":"411-418"},"PeriodicalIF":4.9,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/hve2.70007","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143892905","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

Unveiling first self-healing in metallised film capacitor: A macro–micro analysis 首次揭示金属薄膜电容器的自愈：宏观-微观分析

IF 4.9 2区工程技术

High Voltage Pub Date : 2025-02-24 DOI: 10.1049/hve2.70005

Yushuang He, Feipeng Wang, Guoqiang Du, Lei Pan, Jian Li, Hongming Yang, Xiao Zhang, Zhicheng Zhang, Kaizheng Wang

{"title":"Unveiling first self-healing in metallised film capacitor: A macro–micro analysis","authors":"Yushuang He, Feipeng Wang, Guoqiang Du, Lei Pan, Jian Li, Hongming Yang, Xiao Zhang, Zhicheng Zhang, Kaizheng Wang","doi":"10.1049/hve2.70005","DOIUrl":"10.1049/hve2.70005","url":null,"abstract":"Metallised film capacitors (MFCs) are renowned for their unique self-healing (SH) properties, which bestow them with exceptional reliability and stability in the face of intense electric fields, high voltages, and pulse power applications. Nonetheless, the exploration of SH characteristics concerning single-layer dielectric film remains insufficient for advancing MFC reliability evaluation. To establish the theoretical correlation of SH characteristics from the device to the film in the MFCs, this work developed a simulation model to analyse the SH dynamic behaviour in the MFCs. The effects of coupling capacitors, arc resistance and insulation resistance on the macroscopic characteristics (voltage drop and pulse current) are focused during the SH process in MFCs. The results indicate that SH is primarily associated with the voltage drop duration rather than the sampling current. Consequently, the SH process in MFC is characterised as an abrupt decrease in voltage to its minimum value. This refinement enhances the SH energy dissipation model of MFC. The quantified relationship between the macroscopic characteristics and microstructure evolution (polypropylene decomposition and aluminium electrode vaporisation) is established in MFCs under diverse SH energy levels. As SH energy and duration increase, the proportion of energy attributed to polypropylene decomposition increases, resulting in multi-layer ablation and adhesion within the metallised film and a pronounced deterioration in MFC electrical performance. The examination of macro–micro perspectives sheds new light on the intricate mechanisms governing the SH behaviour in MFCs, offering valuable insights for the advancement of their design, reliability evaluation, and performance optimisation in diverse electrical applications.","PeriodicalId":48649,"journal":{"name":"High Voltage","volume":"10 2","pages":"362-373"},"PeriodicalIF":4.9,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/hve2.70005","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143892906","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

Effect of gamma-ray irradiation on electrical conductivity of polypropylene composite for nuclear cable insulation 射线辐照对核电缆绝缘聚丙烯复合材料电导率的影响

IF 4.9 2区工程技术

High Voltage Pub Date : 2025-02-14 DOI: 10.1049/hve2.70002

Baixin Liu, Yu Gao, Chenyi Guo, Jing Li, Yu Chen, Junguo Gao, Boxue Du

{"title":"Effect of gamma-ray irradiation on electrical conductivity of polypropylene composite for nuclear cable insulation","authors":"Baixin Liu, Yu Gao, Chenyi Guo, Jing Li, Yu Chen, Junguo Gao, Boxue Du","doi":"10.1049/hve2.70002","DOIUrl":"10.1049/hve2.70002","url":null,"abstract":"In this paper, the effect of gamma-ray irradiation on the electrical conductivity of polypropylene (PP) composites has been studied. The samples are prepared using PP and styrene–ethylene–butylene–styrene elastomer with contents ranging from 0 wt% to 50 wt%, and exposed to Cobalt-60 gamma irradiation, with a dose from 0 to 250 kGy. Electrical conductivities at different temperatures and trap distributions are measured to observe the deterioration of insulation performance. The microstructure of the sample is estimated using differential scanning calorimetry, X-ray diffraction, thermogravimetric analysis and a scanning electron microscope. The obtained results demonstrate a correlation between the increase in electrical conductivity and the elevation in both total dose and temperature. At 250 kGy, the trap distribution tends to become shallower, accompanied by a decrease in crystallinity, melting and decomposition temperatures of the sample. The PP composite exhibits better stability against irradiation and thermal effects, primarily due to the cross-linked structures formed by irradiation.","PeriodicalId":48649,"journal":{"name":"High Voltage","volume":"10 2","pages":"470-479"},"PeriodicalIF":4.9,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/hve2.70002","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143892902","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

Guest Editorial: Special issue on real-time simulation and validation of modular multilevel converter-based high-voltage direct current systems 特刊：基于模块化多电平变换器的高压直流系统的实时仿真与验证

IF 4.9 2区工程技术

High Voltage Pub Date : 2025-02-14 DOI: 10.1049/hve2.70004

Chongru Liu, Jun Liang, Zhanqing Yu

{"title":"Guest Editorial: Special issue on real-time simulation and validation of modular multilevel converter-based high-voltage direct current systems","authors":"Chongru Liu, Jun Liang, Zhanqing Yu","doi":"10.1049/hve2.70004","DOIUrl":"10.1049/hve2.70004","url":null,"abstract":"Modular multilevel converter-based high-voltage direct current (MMC-HVDC) technology is advancing rapidly in modern power systems, striving for higher voltage levels and greater power transmission capacity. Real-time simulation has become an essential tool for the design, analysis, and validation of MMC-HVDC systems. However, the complexity of MMC-HVDC with its numerous fast-switching power electronic components presents significant challenges in accurately capturing dynamic responses. Advanced simulation techniques are indispensable for modelling the intricate behaviours of converters, control systems, and protection mechanisms, which are critical for the reliable operation of MMC-HVDC systems.We are honoured to have been invited by High Voltage to serve as guest editors for this special issue, which highlights key achievements in the field of real-time simulation and validation of MMC-HVDC systems. This issue comprises both invited and submitted papers. After rigorous peer review, four outstanding articles were selected showcasing cutting-edge research in real-time simulation technologies, advanced computational methods, and innovative platforms for emerging new power systems.We extend our heartfelt gratitude to all contributing authors for their exceptional work and to the reviewers for their meticulous and insightful feedback, which have been instrumental in ensuring the quality of this special issue. We also sincerely thank the editorial team of High Voltage for their support and dedication throughout the preparation process.We hope this special issue serves as an inspiring and educational resource, offering valuable insights and advancing the field of MMC-HVDC systems. Happy reading!","PeriodicalId":48649,"journal":{"name":"High Voltage","volume":"10 1","pages":"1-2"},"PeriodicalIF":4.9,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/hve2.70004","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143536023","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

High-speed dynamic sensing and analysis of high voltage circuit breaker spring-operating mechanism 高压断路器弹簧操动机构的高速动态传感与分析

IF 4.9 2区工程技术

High Voltage Pub Date : 2025-02-14 DOI: 10.1049/hve2.70006

Quan Yuan, Lei Deng, Qishen Lyu, Hao Guo, Xin Zhang, Jibin Wu, Nianping Yan, Xilin Wang

{"title":"High-speed dynamic sensing and analysis of high voltage circuit breaker spring-operating mechanism","authors":"Quan Yuan, Lei Deng, Qishen Lyu, Hao Guo, Xin Zhang, Jibin Wu, Nianping Yan, Xilin Wang","doi":"10.1049/hve2.70006","DOIUrl":"10.1049/hve2.70006","url":null,"abstract":"Diagnosing the operational status of High-voltage circuit breakers (HVCBs) is crucial for ensuring the safe and stable operation of the grid. Mechanical characteristic parameters are effective indicators for evaluating the performance of HVCBs. Recent studies have shown that the actions of the springs and cams in HVCBs can be used to detect the operational status of the mechanical mechanisms, which occur extremely quickly, usually in the speed of m/ms. In this paper, dynamic vision sensing technology was employed to rapidly and dynamically capture the movements of the springs and cam of the HPL245B1 HVCB. The data volume of a single experiment is less than 100 MB, whereas the data collected by a high-speed camera at the same frame rate exceeds 1 GB. Action data streams of the springs and cam were obtained and images were reconstructed from the event streams. The Lucas–Kanade optical flow algorithm and the normalised cross-correlation algorithm are applied to calculate the parameters of spring deformation characteristics and cam rotation characteristics for mechanical feature detection of HVCBs. This is the first attempt to utilize brain-inspired hardware technology for the status monitoring of electrical equipment. The advantages of dynamic vision sensing technology, such as high dynamic range, low data transmission, and low energy consumption, also offer significant benefits for air discharge monitoring and status monitoring of electrical equipment.","PeriodicalId":48649,"journal":{"name":"High Voltage","volume":"10 4","pages":"1010-1019"},"PeriodicalIF":4.9,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/hve2.70006","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144915144","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

Development of a field-programmable gate array-based real-time generic solver for power electronics circuits with arbitrary configurations 为具有任意配置的电力电子电路开发基于现场可编程门阵列的实时通用求解器

IF 4.9 2区工程技术

High Voltage Pub Date : 2025-02-12 DOI: 10.1049/hve2.70001

Yuan Chen, Jiadai Liu, Hui Ding, Yi Zhang

引用次数: 0

Comparative studies of C4F7N-based gas mixtures as the eco-friendly alternative to SF6 for interrupting applications c4f7n基气体混合物作为SF6的环保替代品的比较研究

IF 4.9 2区工程技术

High Voltage Pub Date : 2025-02-12 DOI: 10.1049/hve2.70003

Wen Wang, Xianglian Yan, Hao Wang, Keli Gao

{"title":"Comparative studies of C4F7N-based gas mixtures as the eco-friendly alternative to SF6 for interrupting applications","authors":"Wen Wang, Xianglian Yan, Hao Wang, Keli Gao","doi":"10.1049/hve2.70003","DOIUrl":"10.1049/hve2.70003","url":null,"abstract":"To comprehensively evaluate the feasibility of using C4F7N-based gas mixture as arc extinguishing medium, a comparative study is performed on the variations of the multi-physical fields, gas flow environment and decomposition characteristics of the gas mixtures. A modified theoretical basis of the arc model developed for the C4F7N-based gas mixture is presented in the work with particular emphasis on the non-recombination features of C4F7N. This work also experimentally studies the electrical characteristics of the gas medium and the monitored parameters are also used to calibrate the arc model. The amount change of the seven dominant decomposing by-products is analysed as well. The results present that the C4F7N/CO2/O2 ternary gas mixture exhibits a more promising interrupting performance. Increasing the O2 concentration from 5% to 10% has less effects on the arc characteristics, but it could suppress the formation of CO. The arc behaviour of C4F7N/CO2/O2 gas mixture is also improved with increasing the velocity of the moving components. The findings provide important insights into the potential of C4F7N-based gas mixtures as one of the sustainable and effective solutions for high-voltage interrupting applications.","PeriodicalId":48649,"journal":{"name":"High Voltage","volume":"10 1","pages":"228-242"},"PeriodicalIF":4.9,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/hve2.70003","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143533999","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

Rapid system prototype-based physical simulation platforms for power systems with high penetration of inverter-based resources 基于快速系统原型的电力系统物理仿真平台，具有高渗透的逆变器资源

IF 4.9 2区工程技术

High Voltage Pub Date : 2025-02-07 DOI: 10.1049/hve2.12520

Wei Yao, Yimin Ruan, Yuying Chen, Hongyu Zhou, Jinyu Wen, Meng Zhou, Wenping Zuo

{"title":"Rapid system prototype-based physical simulation platforms for power systems with high penetration of inverter-based resources","authors":"Wei Yao, Yimin Ruan, Yuying Chen, Hongyu Zhou, Jinyu Wen, Meng Zhou, Wenping Zuo","doi":"10.1049/hve2.12520","DOIUrl":"10.1049/hve2.12520","url":null,"abstract":"The traditional power system dominated by synchronous generators is gradually evolving into a power system with high penetration of inverter-based resources (IBRs). In this paper, the new characteristics that arise from the high penetration of IBRs in power systems are reviewed. In light of these characteristics, current simulation technologies are inadequate and new requirements for the simulation platforms have been proposed. In response, this paper introduces the rapid system prototype (RSP)-based physical simulation platforms, which include the digital simulator, the rapid prototype controller, and the rapid object-controlled prototype. RSP addresses the time-consuming and labour-intensive shortcomings of traditional simulation techniques and meets the rapid evolution needs of the power system with high penetration of IBRs. Compared with existing simulation platforms, RSP is a more suitable platform for the physical simulation of power systems with high penetration of IBRs. Using the modular multilevel converter-based high-voltage direct current as a case study, a novel physical simulation platform for power systems based on RSP is constructed. Experimental results demonstrate that the RSP concept and technology can establish an enterprise-level simulation environment and engineering practice platform. Moreover, it can provide realistic and flexible simulations of various characteristics of power systems with high penetration of IBRs.","PeriodicalId":48649,"journal":{"name":"High Voltage","volume":"10 1","pages":"3-16"},"PeriodicalIF":4.9,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/hve2.12520","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143533409","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