Results 21 to 30 of about 29,243 (264)
A Location Method for AC Fault in LCC-HVDC System Based on Virtual Conduction Width Characteristics
IEEE Access, 2023 When an AC fault occurs in HVDC transmission system, the transient response change in the rate of change of current and voltage, which may lead to the unexpected action behavior of converter protection.
Shanshan Yin
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Xibei Gongye Daxue Xuebao, 2023 The internal leakage fault-tolerant control problem of the electro-hydraulic servo actuator under the influence of multiple unmodeled dynamics is investigated in this paper, and an adaptive fault-tolerant control scheme based on unmodeled dynamics ...
LI Ting +4 more
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A new pilot directional protection method for HVDC line based on the polarity of inductive energy
IET Generation, Transmission & Distribution, 2021 Concerning the poor immunity of DC line protection to fault resistance in the case of internal fault and its mal‐operation proneness in the case of external fault, a new pilot directional protection scheme for HVDC line in AC/DC hybrid system based on ...
Jing Ma +4 more
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IEEE Access, 2021 In this paper, a novel adaptive fault-tolerant controller is proposed for a typical electro-hydraulic rotary actuator in the presence of disturbances, internal leakage fault, and sensor fault simultaneously.
Van Du Phan +3 more
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Internal representation of a process, fault diagnosis and fault correction [PDF]
Ergonomics, 1979 This paper reports on an investigation into the relationship between the internal representation of a process on the one hand and on the other, control behaviour when diagnosing and correcting faults. The subjects were 87 process operator trainees, performing certain tasks in a simulated process control situation.
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Internal faults in power transformers
IET Electric Power Applications, 2007 The paper deals with internal faults in large power transformers. The explanation of such faults is followed by the description of an analytical method proposed for the calculation of the power flow during an interturn fault, including the current supplied by the power grid, the current in a group of short-circuited turns and the current in the spot of
M. Jabloński, E. Napieralska-Juszczak
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Distance protection based on parameter identification considering transformer characteristics
The Journal of Engineering, 2018 The distance protection method with parameter identification can distinguish internal fault from external fault correctly and avoid the transient overreach effectively based on the accurate secondary signal data.
Zhiqin Zheng +4 more
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A Study on the Selection of Failure Factors for Transient State Lithium-Ion Batteries based on Electrochemical Impedance Spectroscopy [PDF]
한국정밀공학회지, 2021 Lithium-ion batteries are one of the main parts of electrical devices and are widely used in various applications. To safely use lithium-ion batteries, fault diagnosis and prognosis are significant.
Miyoung Lee +3 more
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Lithosphere, 2021 Superimposed tectonic movement and karst erosion resulted in a combination of fractures and irregular caves in deep/ultradeep carbonate rocks, typically along major fault swarms.
Peng Cao +6 more
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Waveform dissimilarity factor-based protection for main transformers in wind farms
Energy Reports, 2023 Current differential protection (CDP) is widely used as main protection for transformers due to its high reliability and selectivity. Owing to non-fundamental frequency current, magnetizing inrush and current transformer (CT) saturation, CDP may undergo ...
Yingyu Liang +3 more
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