Results 11 to 20 of about 10,617 (269)

Simulation and Experimental Research on Overvoltage Measurement of Hybrid CVT [PDF]

E3S Web of Conferences, 2021
The CVT equipment running on site is slightly modified to form a hybrid CVT to achieve transient overvoltage measurement, which is theoretically feasible and practical.
Nie Yu, Zhang Guoqing, Song Jiakuo, Wang Guizhong   +3 more
doaj   +1 more source

Empowering and conquering infirmity of visually impaired using AI‐technology equipped with object detection and real‐time voice feedback system in healthcare application

CAAI Transactions on Intelligence Technology, EarlyView., 2023
Abstract The Internet of Things is emerging as a crucial technology in aiding humans and making their lives easier. Among the human population, a large percentage of people suffer from disabilities resulting in challenges in everyday life particularly people with visual disabilities.
Hania Tarik, Shahzad Hassan, Rizwan Ali Naqvi, Saddaf Rubab, Usman Tariq, Monia Hamdi, Hela Elmannai, Ye Jin Kim, Jae‐Hyuk Cha   +8 more
wiley   +1 more source

A New Quantitative Analysis Method for Overvoltage in Sending End Electric Power System With UHVDC

IEEE Access, 2020
With the development of renewable electric power generation and ultra-high voltage direct current (UHVDC) transmission, the transient overvoltage in the sending end electric power system with UHVDC occurs, but it is lack of quantitative transient voltage
Ancheng Xue, Lei Yue, Jiahuan Zhang, Jiehao Cui, Zhiqiang Li, Yecheng Li, Lei Gao, Weifang Lin, Xiaoyu Ren   +8 more
doaj   +1 more source

Research on Resonance Overvoltage of EHV Transmission Lines Caused by Lightning Strike

IEEE Access, 2021
This paper studies the mechanism and influencing factors of resonance overvoltage of EHV transmission lines caused by lightning. By analyzing the time domain steady state of the simplified resonance circuit, the physical mechanism of resonance is ...
Xiao Lei, Tao Cui, Xiaohui Wu, Hong Zeng, Qiang Liu, Linhuan Li   +5 more
doaj   +1 more source

Harmonic elimination of a fifteen‐level inverter with reduced number of switches using genetic algorithm

IET Power Electronics, EarlyView., 2023
This article presents a Fifteen‐level inverter topology that has a lesser number of switches (12) and can accommodate isolated DC sources. The total harmonic elimination (THD) of the proposed topology using genetic algorithm is within the IEEE 519 standards. Further, the fifteen‐level inverter is implemented in Hardware and firing pulses were generated
Yogesh Joshi, Shimi Sudha Letha, Farhad Ilahi Bakhsh, Gopal Lal Jaat, Suyash Tilak   +4 more
wiley   +1 more source

Research on Transient AC Overvoltage Suppression Strategy of Islanded Wind Power Transmission via VSC-HVDC

发电技术, 2022
Voltage source converter based high voltage direct current (VSC-HVDC) has a broad application prospect in the field of islanded renewable energy transmission, due to its advantages such as no commutation failure. When AC fault occurs in the AC power grid
YU Xiao, BU Guangquan, WANG Shanshan
doaj   +1 more source

Inter-Turn Breakdown Fault Analysis and Winding Structure Optimisation of Winding of Dry-Type Transformers in Wind Farms

Energies, 2023
To address the problem of winding turn-to-turn breakdown faults in 35 kV dry-type transformers in wind farms under overvoltage conditions, this paper establishes a simulation model based on the structural dimensions and material parameters of the ...
Ziheng Pu, Xinyun Yu, Yaoqiang Wang, Hao Liu, Zihao Feng   +4 more
doaj   +1 more source

Analysis of influence of energy storage system parameters on HVDC commutation failure overvoltage [PDF]

E3S Web of Conferences, 2023
Overvoltage is a common fault in high voltage direct current (HVDC) transmission systems, which directly affects the safe and stable operation of the system.
Ge Pengjiang, Wang Kangping, Duan Naixin, Wang Jili, Lv Jinli, Zhang Xiaoqi   +5 more
doaj   +1 more source

Multi DC coordinated transient overvoltage suppression strategy for high proportion new energy sending terminal area

电力工程技术, 2023
Aiming at the transient overvoltage problem of high proportion new energy multi direct current (DC) transmission system caused by DC blocking fault, the interaction mechanism between multiple DC lines is analyzed firstly and the multi-outfeed voltage ...
ZHANG Qirui, XIN Chaoshan, LI Fengting, YIN Chunya, LIU Jiangshan, LI Yuan   +5 more
doaj   +1 more source

Research on over-voltage characteristics of ultra high-voltage direct current transmission system

Energy Reports, 2022
Load dumping overvoltage has a significant effect on insulation coordination of direct current (DC) transmission system. Based on the PSCAD/EMTDC electromagnetic transient simulation programs, this paper has built the electromagnetic transient ...
Yingjin Li, Jian Cui, Ran Yang, Ping Huang, Bo Chen, Junfei Wang, Zhizheng Gan   +6 more
doaj   +1 more source