Results 31 to 40 of about 64,850 (165)
Rolling Bearing Incipient Fault Detection Based on a Multi-Resolution Singular Value Decomposition
Applied Sciences, 2019 The periodic impulse characteristics caused by rolling bearing damage are weak in the incipient failure stage. Thus, these characteristics are always drowned out by background noise and other harmonic interference.
Jiesi Luo, Shaohui Zhang
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Investigation of Impulse Aging of Energy-Absorption Elements for Hybrid DC Circuit Breakers
Applied Sciences, 2023 The state of the energy-absorption branch MOV in the hybrid DC circuit breaker (DCCB) has a very important impact on the short fault breaking operation of the circuit breaker.
Xinyi Wang +6 more
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Characteristics of Impulse Discharges in Wet Soil
The Transactions of The Korean Institute of Electrical Engineers, 2017 This paper presents the experimental results related to soil ionization and electrical breakdown in a concentric hemispherical electrode system under lightning impulse voltages. Dynamic voltage-current and impedance-time characteristics of soil ionization were measured and analyzed. Also the electrical breakdowns of the soil gap were investigated.
Hoe-Gu Kim, Bok-Hee Lee
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Current Sensor with Optimized Linearity for Lightning Impulse Current Measurement
SensorsImpulse current measurement technology is widely used in various applications, including lightning protection monitoring in power systems, welding current measurement in aircraft and shipbuilding industries, as well as high-current measurement in pulsed ...
Wenting Li +7 more
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IEEE Access, 2020 Landslide-induced impulse waves in a river-valley reservoir region have become a serious threat to life and property intactness. Compared with previous studies focusing on landslides in open-water regions, this article systematically carried out ...
Bin Deng, He Tao, Changbo Jiang, Ke Qu
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Известия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2012 The paper considers the influence of impulse unloading of APS power block turbine on its dynamic steadiness. The performed calculations while simulating four various impulse turbine characteristics have shown that the highest effect is obtained while ...
Yu. D. Filipchik
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Tower impulse grounding resistance measurement based on multiple frequency impedance
IET Generation, Transmission & Distribution, 2023 Tower impulse grounding resistance is important for judging the lightning protection performance of transmission lines. Therefore, it is significant to accurately measure the tower impulse grounding resistance. Existing measurement methods mainly contain
Yihua Dan +5 more
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Influence of Pulse Interval on Soil Dispersion Characteristics under Continuous Impulse
Advances in Electrical and Computer EngineeringUnder continuous lightning strikes, the impulse dispersion characteristics of grounding devices more effectively indicate the effectiveness of tower grounding for lightning protection.
CAO, W. +4 more
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Ultrasonics SonochemistryThe combined action of multiple particles and cavitation bubbles can severely damage hydraulic machinery. Combining the Kelvin impulse theory and the results of high-speed photography experiments, this paper researches the dynamic behaviors of a single ...
Xiaoyu Wang +4 more
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IEEE Access, 2019 The observation of the air gap discharge process is the basis of revealing the physical mechanism of gas discharge and establishing the accurate numerical simulation model.
Yaqi Zhang +7 more
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