Results 21 to 30 of about 40,690 (240)

Insulator fault feature extraction system of substation equipment based on machine vision

IET Networks, EarlyView., 2022
Abstract The artificial intelligence technology and intelligent automation are more and more widely used, the insulators play a supporting and insulating role in the operation of the grid. The use of machine vision inspection technology to detect insulator faults has become an inevitable trend of the times.
Keruo Jiang, Qiaoqun Xia, Lijun Ma, Xin Xu, Zhipeng Shao   +4 more
wiley   +1 more source

A Simplified Top-Oil Temperature Model for Transformers Based on the Pathway of Energy Transfer Concept and the Thermal-Electrical Analogy

Energies, 2017
This paper presents an alternative approach to determine the simplified top-oil temperature (TOT) based on the pathway of energy transfer and thermal-electrical analogy concepts.
Muhammad Hakirin Roslan, Norhafiz Azis, Mohd Zainal Abidin Ab Kadir, Jasronita Jasni, Zulkifli Ibrahim, Azalan Ahmad   +5 more
doaj   +1 more source

Study of the B-Dot Sensor for Aircraft Surface Current Measurement

Sensors, 2022
The B-dot sensor is a type of Rogowski coil widely used in the measurement of current. However, the accuracy of the B-dot for measuring aircraft high-frequency lightning current is greatly affected by factors such as numerical integration drift, high ...
Chen Tong, Zemin Duan, Yeyuan Huang, Shanliang Qiu, Xiaoliang Si, Zhibao Li, Zhijie Yuan   +6 more
doaj   +1 more source

Application of 3D scanning technology in Royal Malaysian Air Force Industrial Revolution 4.0‐based aircraft maintenance

IET Networks, EarlyView., 2022
Abstract 3D scanning is rapidly becoming a key maintenance tool. Aerospace was a pioneer in adopting 3D scanning technology because aircraft manufacture and maintenance require precision. Monitoring deterioration, removing components for maintenance, and verifying covert operations are not practical or helpful without technology.
T. Nanthakumaran Thulasy, Puteri N. E. Nohuddin, Istas Fahrurrazi Nusyirwan, Mohd Hanafi Ahmad Hijazi, Musaddak Maher Abdul Zahra   +4 more
wiley   +1 more source

Observation of the Whole Discharge Process During a Multi-stroke Triggered Lightning by Continuous Interferometer

应用气象学报, 2020
The discharge process is often discussed in the lightning physics. VHF (very high frequency) observations play an important role in studying lightning discharge processes, because they show where air breakdown occurs.
Zhang Yang, Chen Zefang, Wang Jingxuan, Fan Yanfeng, Zheng Dong, Lü Weitao, Zhang Yijun   +6 more
doaj   +1 more source

MiR‐513a promotes human erythroid differentiation by modulating c‐Jun

FEBS Open Bio, EarlyView.
During early human erythropoiesis, miR‐513a promoted erythroid differentiation in primary human CD34+ hematopoietic stem‐progenitor cells and human TF‐1 erythroleukemic cells by indirectly decreasing c‐Jun and phospho‐c‐Jun expression, which are associated with increased GATA1 expression.
MinJung Kim, Brittany Taylor, Shannon Bolten, Christian L. Eberly, Mahliya Abdurahman, T. Michael Creed, Acong Yang, Taylor L. Hatchet, Tristan Dyson, Shuo Gu, Curt I. Civin, Tami J. Kingsbury   +11 more
wiley   +1 more source

Spatiotemporal Characteristics of Development Speed of Downward Positive Cloud-to-ground Lightning Leader Channels in Guangzhou

应用气象学报
Positive cloud-to-ground (CG) natural lightning typically exhibits higher energy release than negative CG lightning, with greater peak current, longer duration, and larger charge transfer.
Shao Xinran, Wu Bin, Lü Weitao, Qi Qi, Lü Fanchao, Ma Ying, Chen Lüwen, Liu Hengyi, Xu Weiqun   +8 more
doaj   +1 more source

Gigantic jet discharges evolve stepwise through the middle atmosphere

Nature Communications, 2019
Gigantic jets, lightning discharges originating from tropical thunderstorms that can reach the base of the ionosphere at 90 km altitude, have not been captured using high-speed video cameras before.
Oscar A. van der Velde, Joan Montanyà, Jesús A. López, Steven A. Cummer   +3 more
doaj   +1 more source

Application of Markov Model to Estimate Individual Condition Parameters for Transformers

Energies, 2018
This paper presents a study to estimate individual condition parameters of the transformer population based on Markov Model (MM). The condition parameters under study were hydrogen (H2), methane (CH4), acetylene (C2H2), ethylene (C2H4), ethane (C2H6 ...
Amran Mohd Selva, Norhafiz Azis, Muhammad Sharil Yahaya, Mohd Zainal Abidin Ab Kadir, Jasronita Jasni, Young Zaidey Yang Ghazali, Mohd Aizam Talib   +6 more
doaj   +1 more source

A Comprehensive Review on Optimal Location and Sizing of Reactive Power Compensation Using Hybrid-Based Approaches for Power Loss Reduction, Voltage Stability Improvement, Voltage Profile Enhancement and Loadability Enhancement

IEEE Access, 2020
With the modernization of power grids, the network optimal utilization is essential to ensure that voltage profile at each bus is maintained within an acceptable range, voltage stability of the system is enhanced, power losses in lines are minimized ...
Bazilah Ismail, Noor Izzri Abdul Wahab, Mohammad Lutfi Othman, Mohd Amran Mohd Radzi, Kanendra Naidu Vijyakumar, Muhammad Najwan Mat Naain   +5 more
doaj   +1 more source