Article
Energy & Fuels
Mohamed Alashqar, Conghuan Yang, Ying Xue, Zhaoxi Liu, Weiye Zheng, Xiao-Ping Zhang
Summary: The increasing electricity demand necessitates the installation of more generating units in the grid. However, this leads to fault current levels exceeding the limits of electrical equipment, especially in interconnected grids. Existing solutions have drawbacks, while the superconducting fault current limiter (SFCL) shows promise. This paper proposes the use of the resistive SFCL to enhance the stability of an interconnected power system, with a case study conducted on a two-area system to analyze the optimal value and locations of the SFCL. Results demonstrate that the system remains stable without the need for tuning the power system stabilizer (PSS).
FRONTIERS IN ENERGY RESEARCH
(2023)
Article
Engineering, Electrical & Electronic
Isa Hafidz, Rafin Aqsa Izza Mahendra, Margo Pujiantara, Ardyono Priyadi, Mauridhi Hery Purnomo
Summary: This article proposes an optimal placement method for a resistive-type superconducting fault current limiter (RSFCL) to achieve good power system transient stability. The method has several advantages, including the use of a fault analysis procedure to consider the magnitude of short-circuit currents and the proximity of the line to the generator for device placement. Additionally, parameter analysis was used to evaluate the effectiveness of the proposed method, leading to the finding that placing the limiter on the line with the most significant short-circuit value near the generator improves power system stability.
IET GENERATION TRANSMISSION & DISTRIBUTION
(2023)
Article
Engineering, Electrical & Electronic
Naoki Hayakawa, Yuji Mori, Hiroki Kojima
Summary: This article investigates the breakdown characteristics of liquid nitrogen (LN2) under steady-state and fault current limiting operations. The study examines the heat flux and pressure dependence of the dynamic breakdown strength of LN2 and proposes a flowchart to estimate the breakdown strength for insulation design.
IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION
(2022)
Article
Energy & Fuels
Guillermo Garcia, D. Marene Larruskain, Agurtzane Etxegarai
Summary: This paper presents different approaches to model resistive type superconducting fault current limiters (R-SFCLs) and evaluates their suitability for assessing the performance of high voltage direct current (HVDC) grids. The RQ model is chosen as the most suitable model for studying HVDC grids, and it is found that R-SFCL can greatly decrease fault currents and reduce circuit breaker requirements, providing reliable protection for HVDC grids.
Article
Energy & Fuels
Janusz Kozak
Summary: This paper presents the design of a Superconducting Fault Current Limiter (SFCL) and calculation results of forces and stresses in the windings of a resistive fault current limiter. The use of magnetically compensated windings made of HTS tape in the limiter reduces the voltage and limits the fault current, thus decreasing the thermal and dynamic effects of the fault current passage. The importance of selecting means to limit fault currents, maintaining power quality standards, and ensuring the safe levels of stress in the superconducting tape in fault conditions are emphasized in this study.
Article
Computer Science, Information Systems
Guangyang Zhou, Minxiao Han, Shaahin Filizadeh, Zhi Geng, Xiahui Zhang
Summary: The article proposes a fault detection scheme for MMC-MTdc grids based on a resistive-type superconducting fault current limiter, showcasing efficient and rapid detection capabilities with high resistance tolerance. Simulation results confirm the ability to identify metallic short circuit faults within 1 ms and promptly detect faults with high resistance in less than 3 ms.
IEEE SYSTEMS JOURNAL
(2022)
Article
Engineering, Electrical & Electronic
Hongxu Li, Bin Xiang, Xuedong Wang, Siyi Li, Siyuan Liu, Yingsan Geng, Zhiyuan Liu, Jianhua Wang
Summary: This paper proposes a novel design method for a DC circuit breaker that coordinates with a superconducting fault current limiter to reduce di/dt before current zero-crossings and enable repeat operations economically.
IEEE TRANSACTIONS ON POWER DELIVERY
(2022)
Article
Engineering, Electrical & Electronic
R. F. Silva, G. R. F. Q. Mafra, G. G. Sotelo, M. Z. Fortes, F. Trillaud, D. Guillen
Summary: Electric power systems may experience high asymmetry fault currents when generators are close to large motors and loads. These fault currents may exhibit Delayed Current Zeros (DCZ) depending on the fault inception instants. This study demonstrates that resistive superconducting fault current limiters (r-SFCL) can address the DCZ issue and reduce the magnitude of fault currents.
INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS
(2023)
Article
Engineering, Electrical & Electronic
J. Sheng, L. Yao, Y. Chen, J. Gu, Z. Li, Z. Hong, Z. Jin
Summary: This paper presents the testing of a single phase resistive type superconducting fault current limiter (SFCL) in the distribution network of Chongming Island, China. The SFCL's working performance was evaluated based on data from rated state test and artificial fault tests, and further discussions were conducted to verify its current limiting and voltage holding functions through a numerical model in PSCAD.
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2021)
Article
Chemistry, Multidisciplinary
Sylwia Hajdasz, Adam Kempski, Krzysztof Solak, Maciej Marc, Jacek Rusinski, Pawel Szczesniak
Summary: Superconducting fault current limiters (SFCL) using high-temperature superconducting tapes of the second generation (HTS 2G) can replace traditional devices in power systems to limit short-circuit currents. The critical current of the HTS tape determines the activation of the SFCL and should remain constant to ensure proper cooperation with power system protection devices. The article presents research results on the degradation processes of 2G HTS tapes due to prospective short-circuit currents exceeding the critical current, including the decrease in critical current value and determination of limitation values of voltage drop that do not cause accelerated degradation processes.
APPLIED SCIENCES-BASEL
(2023)
Article
Engineering, Electrical & Electronic
Rohit S. Thute, Himanshu J. Bahirat, S. A. Khaparde
Summary: A fault current limiter (FCL) is an economical option to limit increased fault current levels and improve rotor angle stability. Previous studies focused on FCLs with quick recovery and concluded that they enhance rotor angle stability. However, this paper examines the impact of a superconducting FCL (SCFCL) with delayed recovery on transient rotor angle stability. The study develops an analytical understanding of the stability of a system with SCFCL and employs time-domain simulations to demonstrate its effects on rotor angle stability, showing that the SCFCL with delayed recovery can lead to rotor angle instability in certain cases.
ELECTRIC POWER SYSTEMS RESEARCH
(2023)
Article
Engineering, Electrical & Electronic
Lei Chen, Jingguang Tang, Hong Dong, Ruizhe Hu, Xuechun Wang, Hongkun Chen, Md Rabiul Islam, Xinyi Deng
Summary: This paper discusses the power angle stability issues faced by multi-microgrid clusters controlled by virtual synchronous generator (VSG), and proposes the use of resistive superconducting fault current limiters (R-SFCLs) to address the problem. Simulation results show that the R-SFCLs can effectively suppress overcurrent and improve transient stability in the clusters.
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2022)
Article
Engineering, Electrical & Electronic
Osama E. Gouda, Mohamed Awaad, Zinab E. Afifi
Summary: The study shows that the HVDCGCB with resistive SFCL can successfully interrupt fault current, reducing arcing time to milliseconds and significantly improving interruption capability through commutation capacitance charging voltage and discharging current. The superconducting resistance provides high discharge current, leading to an improvement in the circuit breaker interruption process and a decrease in the rise rate of the re-striking voltage between the circuit breaker contacts when using the resistive SFCL.
ELECTRIC POWER SYSTEMS RESEARCH
(2021)
Article
Engineering, Electrical & Electronic
Sang-Yong Park, Hyo-Sang Choi
Summary: The issue of DC transmission and distribution systems is on the rise due to the increase in DC supply and demand. The future MTDC system has become a major concern beyond the traditional PTP HVDC system. However, the lack of zero-crossings in DC fault current, which is about ten times higher than AC, poses challenges in fault protection for grid conversion equipment.
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2023)
Article
Engineering, Electrical & Electronic
M. Khorasaninejad, M. Radmehr, M. Firouzi, A. Koochaki
Summary: The high DC fault current is a major challenge in HVDC systems, with fault current limiters (FCL) providing an effective solution. A resistive mutual-inductance fault current limiter (RMFCL) is proposed in this paper, which reduces the DCCB requirements by modifying the power circuit and proves to be effective in a 3-terminal HVDC system in PSCAD/EMTDC system.
INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS
(2022)
Article
Geosciences, Multidisciplinary
Haihai Hou, Longyi Shao, Yue Tang, Zhen Li, Sheng Zhao, Minglei Yao, Xuetian Wang, Jiaqiang Zhang
Summary: This study focuses on characterizing the pore structure of coal reservoirs in northern China. By utilizing various techniques such as proximate analysis, coal petrology, and nuclear magnetic resonance, the study examines the coal samples from three coalbed methane exploration areas. The results show that coalification and igneous intrusion greatly influence the coal properties, including vitrinite content, pore connectivity, and methane adsorption capacity. The study also reveals the complex variation in pore size distribution and highlights the best target maturity level for CBM exploitation.
Article
Energy & Fuels
Zixuan Zheng, Yu Chen, Xiaoyuan Chen, Boyang Shen, Xianyong Xiao, Shan Jiang, Mingshun Zhang, Huayu Gou, Zhou Pang, Yi Lei
Summary: This article presents a novel solution for the hybrid energy transmission of liquefied shale gas (LSG) and electricity using cryogenic and superconducting technologies. Through practical design and economic analysis, the technical and economic advantages of the proposed solution are confirmed, providing comprehensive methods and design guidance for future hybrid energy transmission.
Article
Engineering, Electrical & Electronic
Zixuan Zheng, Xiaoyuan Chen, Xianyong Xiao, Huayu Gou, Mingshun Zhang, Shan Jiang, Boyang Shen, Lin Fu
Summary: This letter presents a novel circuitry that combines cryogenic power electronics (CPE) with the superconducting Z-source dc circuit breaker technology to address the challenges faced by room-temperature power electronics based dc circuit breakers and fault current limiters. The new device demonstrates a reduction in overall system loss, automatic fault current limiting with no delay, and active device isolation and passive fault isolation within a short time period.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2023)
Article
Chemistry, Analytical
Bin Jiang, Yue Tang, Jianrong Bao, Chao Liu, Yanhai Shang
Summary: This article proposes an efficient polar coded selective decode-and-forward (SDF) cooperation method to address the error propagation issue in satellite IoT devices with terrain shielding. The method utilizes channel state information (CSI) to derive a new decision threshold based on the channel gain ratio of the optimal relay-destination link (R-D). Simulation results show that the proposed scheme achieves about 0.9 dB and 0.5 dB gains at a bit error rate (BER) of 10-4, respectively, compared to non-cooperation and existing polar coded cooperation channels.
Article
Medicine, Research & Experimental
Zunyong Feng, Zhou Jing, Qiang Li, Liuxi Chu, YuXin Jiang, Xuanbo Zhang, Liang Yan, Yinhua Liu, Jing Jiang, Ping Xu, Qun Chen, Ming Wang, Hui Yang, Guoren Zhou, Xiaochun Jiang, Xiaoyuan Chen, Hongping Xia
Summary: Exosomes derived from AEC-IIs, called ADEs, can balance airway immunity and alleviate damage and fibrosis by regulating the immune and metabolic status of TRAMs. In a mouse fibrosis model, supplementation with ADEs reduced acute injury, prevented advanced fibrosis, alleviated ventilatory impairment, and decreased mortality.
Article
Chemistry, Multidisciplinary
Yanlin Feng, Xin Ning, Jianlin Wang, Zhaoyang Wen, Fangfang Cao, Qing You, Jianhua Zou, Xin Zhou, Teng Sun, Jimin Cao, Xiaoyuan Chen
Summary: Photoimmunotherapy is a novel targeted therapeutic strategy for highly malignant triple-negative breast cancer. However, its therapeutic effect is restricted by limited tissue penetration of light and complex immunosuppressive microenvironment. A new mace-like plasmonic Au-Pd heterostructures have been developed to enhance the outcomes of photoimmunotherapy. These structures exhibit strong photothermal and photodynamic effects, triggering immunogenic cell death and stimulating immune response. This study integrates nanotopology and plasmonic performance for the treatment of TNBC through immunotherapy.
Article
Chemistry, Multidisciplinary
Jun Wang, Hongye Ding, Yang Zhu, Yina Liu, Meili Yu, Huilan Cai, Rujiang Ao, Hongwei Huang, Peng Gong, Yaxin Liao, Zhaolin Chen, Lisen Lin, Xiaoyuan Chen, Huanghao Yang
Summary: In this study, siRNA-embedded Fe-0 nanoparticles (Fe-0-siRNA NPs) were synthesized for self-reinforcing CDT via FHC downregulation. Upon internalization by cancer cells, pH-responsive Fe-0-siRNA NPs are degraded to release Fe2+ and FHC siRNA, promoting endo/lysosomal escape of siRNA and enhancing CDT through (OH)-O-center dot generation.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Junjie Cheng, Yang Zhu, Yi Dai, Li Li, Miya Zhang, Duo Jin, Manman Liu, Jiaji Yu, Wenxin Yu, Dan Su, Jianhua Zou, Xiaoyuan Chen, Yangzhong Liu
Summary: The metabolic reprogramming of tumors requires high levels of ATP, posing a challenge for photothermal therapy. Raising the temperature helps in tumor ablation but causes severe side effects. In this study, a gas-mediated energy remodeling strategy was proposed to improve PTT efficacy while minimizing side effects.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Business
Shu Guo, Xuting Sun, Hugo K. S. Lam
Summary: This article studies the information disclosure games over the environmental efforts in fashion supply chains and discusses how the application of blockchain technology influences these games.
IEEE TRANSACTIONS ON ENGINEERING MANAGEMENT
(2023)
Article
Urology & Nephrology
Xin Xu, Sheng Nie, Hong Xu, Bicheng Liu, Jianping Weng, Chunbo Chen, Huafeng Liu, Qiongqiong Yang, Hua Li, Yaozhong Kong, Guisen Li, Qijun Wan, Yan Zha, Ying Hu, Gang Xu, Yongjun Shi, Yilun Zhou, Guobin Su, Ying Tang, Yanqin Li, Licong Su, Ruixuan Chen, Yue Cao, Peiyan Gao, Shiyu Zhou, Xiaodong Zhang, Fan Luo, Ruqi Xu, Qi Gao, Fan Fan Hou
Summary: Serum cystatin C is a sensitive biomarker for detecting neonatal AKI, and cystatin C-based criteria are more effective than creatinine criteria in identifying newborns at risk of in-hospital mortality.
JOURNAL OF THE AMERICAN SOCIETY OF NEPHROLOGY
(2023)
Article
Microbiology
Ying Tang, Yan Tang, Dandan Ren, Congcong Wang, Yao Qu, Li Huang, Yongjun Xue, Yina Jiang, Yiwen Wang, Ling Xu, Pinkuan Zhu
Summary: This study investigates the role of the blue-light receptor FaWC1 in regulating the intracellular HOG-MAPK signaling pathway to affect ROS sensitivity and pathogenicity in Fusarium asiaticum, an important cereal pathogen.
MICROBIOLOGY SPECTRUM
(2023)
Article
Chemistry, Applied
Yafeng Liu, Xiaoyuan Chen, Min Zhang, Ruofei Hao, Songting Tan
Summary: Two copolymer donors, VT and VDT, based on TVT and TTVTT derivatives, were synthesized and applied for OSCs. The extension of conjugation was found to affect the optical and electronic properties, molecular aggregation, charge separation, and overall photovoltaic performances. OSCs based on VDT:Y6 and VT:Y6 achieved optimal PCEs of 12.67% and 8.85%, respectively, without any additives or post-solvent/thermal annealing processes. These results highlight the effectiveness of extending the π-electron delocalization of copolymer donors to enhance device performances.
Article
Engineering, Electrical & Electronic
Ruohuan Yang, Jianxun Jin, Qian Zhou, Mingshun Zhang, Shan Jiang, Xiaoyuan Chen
Summary: This paper proposes a superconducting magnetic energy storage (SMES) integrated current-source DC/DC converter (CSDC) to address the unpredictable power fluctuation and fault ride-through capability in doubly-fed induction generators (DFIGs) integrated DC power system. The proposed SMES-CSDC has the advantages of fast response, extensive compensation range, concise hardware structure, and straightforward control strategy.
JOURNAL OF MODERN POWER SYSTEMS AND CLEAN ENERGY
(2023)
Article
Chemistry, Multidisciplinary
Min Zhang, Xiaoyuan Chen, Lei Wang, Xiong Deng, Songting Tan
Summary: By introducing a fused ring electron acceptor with a high-lying LUMO energy level and complementary spectrum, the PM6:Y6 binary system was transformed into a ternary blend film PM6:Y6:BTMe-C8-2F, achieving better photovoltaic performance with higher power conversion efficiency, balanced charge mobilities, and low charge recombination.
Article
Chemistry, Multidisciplinary
Jianwei Zhu, Yuning Zhang, Zheng Li, Xiaowen Bao, Yanfeng Zhou, Bo Ma, Ying Xie, Peiyu Yan, Zimei Wu, Qi Zhang, Jianhua Zou, Xiaoyuan Chen
Summary: This study designs an intelligent nanosystem that responds to hypoxia for targeted drug delivery, improving therapeutic efficacy and reducing side effects. The system combines hypoxia-activatable tirapazamine (TPZ) with polyethylene glycol to form a pH-sensitive poly-prodrug. Furthermore, the nanosystem can generate reactive oxygen species and has high photothermal conversion efficiency, which destroys tumor blood vessels and activates hypoxia-induced chemotherapy.
MATERIALS HORIZONS
(2023)
