Results 11 to 20 of about 80 (76)
A Review of Current Issues in State-of-Art of Wind Farm Overvoltage Protection
Energies, 2011 This paper elaborates on several important outstanding issues in the state-of-art of overvoltage protection selection for modern wind farms. The lack of experience with this still-new technology, together with the inherent complexity of wind farm ...
Ranko Goić, Petar Sarajčev
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IET Science, Measurement & Technology, 2021 This paper presents an advanced technique based on cross‐Stockwell transform (XST) and sparse autoencoder to predict the surface contamination severity of metal oxide surge arrester (MOSA) employing leakage current signal.
Arup Kumar Das +2 more
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Modelling of Low-Voltage Varistors’ Responses under Slow-Front Overvoltages
Electronic Materials, 2023 In this study, commercially low-voltage MOVs are exposed to switching surges to analyse and model the relationship between the number of surges and the MOV grain barrier height response.
Lutendo Muremi +2 more
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Energies, 2018 The voltage distribution along the non-linear resistance of metal oxide surges is of great importance for their proper operation, since the non-uniform potential distribution results in higher thermal stresses of the varistor discs near the high voltage ...
Christos A. Christodoulou +3 more
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Alleviation of the transients induced in large photovoltaic power plants by direct lightning stroke
Ain Shams Engineering Journal, 2023 Lightning strokes are considered the most common passively effective cause on the photovoltaic (PV) power plants compared to the other internal faults. In this paper, a 1 MW solar PV grid-connected power plant was studied.
Abdelrahman Said +3 more
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Energies, 2017 The appropriate circuit modeling of metal oxide gapless surge arresters is critical for insulation coordination studies. Metal oxide arresters present a dynamic behavior for fast front surges; namely, their residual voltage is dependent on the peak value,
Christos A. Christodoulou +4 more
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Current interruption tests of HVDC circuit‐breakers: Requirements, methods and a testing case
IET Generation, Transmission & Distribution, 2022 Development towards HVDC grids is drawing intense development of HVDC circuit‐breakers (CBs). The increasing rated voltage and capacity requires HVDC CBs with excellent performance to be installed and comprehensive tests on HVDC CBs are indispensable ...
Shenli Jia +6 more
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Calculation and protection on the lighting intruding waves of 550 kv GIS substation
The Journal of Engineering, 2018 Electromagnetic Transient Programme has been used to calculate the lightning intruding wave of 550 kV GIS substation. The effects of mode operation, surge impedance and length of cable have been considered in the process of calculation.
Dongpeng Sui +5 more
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Harnessing Phase Separation for the Development of High‐Performance Hydrogels
Advanced Science, EarlyView.ABSTRACT Hydrogels are indispensable for the development of next‐generation bioelectronics, soft robotics, and biomedical devices, where their mechanical properties determine performance and reliability. Among strategies to enhance hydrogel mechanics, phase separation enables controlled heterogeneity resulting in gel networks that are reinforced by ...
Yue Shao +3 more
wiley +1 more source
Advanced Science, EarlyView.ROS‐Responsive H2S Hydrogel (HAPPF) Coordinated Regeneration for High‐Quality Diabetic Wound Repair.A self‐regulating dynamic hydrogel is developed to deliver a fluorogenic H2S donor in response to excessive ROS. Released H2S acts as a master regulator to resolve chronic inflammation (M2 polarization), restore VEGF‐driven angiogenesis, and rebalance ...
Xuyang Ning +7 more
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