Results 51 to 60 of about 235 (182)
High VoltageThe submodule in multilevel modular converters experiences a very fast transient overvoltage (VFTO) during switch operation of gas‐insulated switchgear, which also results in overvoltage on power devices, such as thyristors and insulated gate bipolar ...
Hong Shen +7 more
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Frontiers in Energy Research, 2023 Series-compensated transmission lines (SCTLs) are increasingly preferred for transmitting bulk amounts of electricity generated from the present-day large-scale wind farm to the utility grid due to several technical and economic benefits. However, when a
M. S. Prabhu +4 more
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IET Generation, Transmission &Distribution, Volume 20, Issue 1, January/December 2026.A new evolutionary search algorithm based on improved Particle Swarm Optimisation (PSO) is introduced in this study to estimate the phasor. The performance has been evaluated through extensive simulations considering transient components, harmonics, and frequency changes in noiseless and noisy conditions.
Seyedeh Mina Abed Shiadeh +2 more
wiley +1 more source
Energies, 2022 Deep decarbonization is the goal of modern power systems, so it is inevitable that large-scale wind farms will be integrated into systems. This also gives rise to many problems, which have been studied in detail in the literature.
Chi Hsiang Lin
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Reliability evaluation of metal oxide varistors for maintenance scheduling [PDF]
WIT Transactions on Ecology and the Environment, Vol 91, 2006 Surge overvoltages result in a power system from overcurrents due to atmospheric discharges, induction phenomena, switch operations or faults. In order to reduce the probability of injuries to people and of failure of electrical and electronic systems, power systems within a structure should have adequate equipotential bonding. Surge protective devices
Amicucci, G. L., Gentile, P.
openaire +2 more sources
Journal of the American Ceramic Society, Volume 109, Issue 1, January 2026.Abstract Microstructure homogeneity and grain size reduction are needed to ensure the current uniformity and reliability required in metal oxide varistors for DC circuit breakers. Cold sintering (CS)–a low‐temperature digestive liquid and high‐pressure densification process–has previously shown reduced grain growth, but it is not clear how the lower ...
Kayla Y. Chuong +5 more
wiley +1 more source
Applied SciencesMetal-oxide surge arresters (MOSAs) are critical devices for overvoltage protection in power systems, and the aging characteristics of their zinc oxide (ZnO) varistors under impulse and power-frequency voltages exhibit significant differences.
Yongqiang Fan +7 more
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International Journal of Energy Research, Volume 2026, Issue 1, 2026.Automatic generation control (AGC) is vital for preserving frequency and power balance in modern interconnected power systems (IPSs), which are increasingly challenged by nonlinear dynamics, parameter uncertainties, and unpredictable load variations.
Getaneh Mesfin Meseret, Mohammad Ghiasi
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High Voltage, Volume 10, Issue 3, Page 673-679, June 2025.Abstract This study focuses on the distribution of high‐resistance media (pores and spinels) within ZnO $\text{ZnO}$ varistors and explores the mechanical and electrical failure mechanisms of varistors under different pulse actions. Micro‐CT technology revealed that the proportion of high‐resistance media in the edge area is much higher than in the ...
Pengfei Meng +7 more
wiley +1 more source
High Voltage, Volume 10, Issue 3, Page 546-554, June 2025.Abstract Commutation failure (CF) is an inherent problem faced by line commutated converter high voltage direct current (LCC‐HVDC) technology. To completely solve the problem of CF, we have proposed a novel hybrid commutated converter (HCC) technology based on reverse blocking integrated gate commutated thyristor, which can utilise two methods for ...
Zongze Wang +7 more
wiley +1 more source