Results 21 to 30 of about 181 (134)
Reduction Reactive Power and Collapse Voltage Using Series Capacitors Compensation in Sudden Change Loads of Transmission Lines [PDF]
The continuous increase of disturbances on the interconnected electric power system resulting in its inability to reliably meet demands. This paper presents an application of a series capacitor compensation in transmission line and shunt reactors ...
Hussein Thani Rishag
doaj +1 more source
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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This article presents an original experimental method applied to assess the stability limits of a given Metal Oxide Varistor (MOV), with cylindrical symmetry (cylinder or disk shape), as a direct relation between the ambient temperature and the service ...
Petru Andea +4 more
core +1 more source
An energy absorbing method for hybrid mmcs to avoid full-bridge submodule overvoltage during DC fault blocking [PDF]
The full-bridge submodules (FB-SMs) in hybrid modular multilevel converters need to absorb the enormous energy stored in dc side and arm inductors during dc fault blocking, which may lead to severe overvoltage.
Xiong, Jian +5 more
core +1 more source
Recovery of Antimony: A Laboratory Study on the Thermal Decomposition and Carbothermal Reduction of Sb(III), Bi(III), Zn(II) Oxides, and Antimony Compounds from Metal Oxide Varistors [PDF]
As antimony is typically present in industrial and commercial products only in small amounts, the concentration of antimony in waste types is low and a limited amount of antimony is currently recycled. One product relatively rich in antimony is the metal
Steenari, Britt-Marie, +8 more
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金属氧化物压敏电阻(metal oxide varistor,MOV)广泛应用于各种直流断路器中,用于抑制过电压、系统能量耗散与开断电压建立。受目前加工工艺限制,单MOV阀片通流能力有限,故断路器中多采用多柱并联结构。柱间电流分配不均会导致局部阀片超负荷耗能,造成开断失败甚至设备损坏。文中基于实验测量建立了一种直流开断工况下的MOV电气模型,基于该模型提出了MOV阀片均流选配方法。经实验验证,传统基于雷电冲击测试方法选配的MOV在直流开断工况的均流特性不能完全满足要求 ...
龙辰 +7 more
doaj
Two basic ways to realise DC circuit breakers
As a key element of the DC grid, the technology of DC circuit breakers (DCCBs) still have difficulty to be widely used due to its large cost and volume. This paper studies the basic principle and its realisation methods for DCCBs.
Zheng Xu +3 more
doaj +1 more source
Lightning protection for power transformers of Aqaba Thermal Power Station
In this paper, a study of the lightning phenomenon and its harmful effect on Aqaba Thermal Power Station (ATPS), located in the south-western border of Jordan, is presented using the Electromagnetic Transients Program – Alternative Transients Program ...
Wael Fawzi Abu Shehab +2 more
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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
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
wiley +1 more source

