Results 61 to 70 of about 10,217 (226)
Rare Lightning and Convection Characteristics During Two Successive Tornadoes in Southern China
High Voltage, EarlyView.ABSTRACT Systematic investigations into lightning characteristics of tornado storms in China remain scarce. This study comprehensively analyses rare lightning behaviour and overshooting top characteristics for two successive tornadoes during a long‐lived supercell in southern China on 27 April 2024.
Fengquan Li +9 more
wiley +1 more source
Possibilities of limiting overvoltage pulses
, 2021 Předkládaná diplomová práce je zaměřena na vznik přepěťových impulzů v síti a jejich omezení. Teoretická část se nejprve zabývá elektromagnetickou kompatibilitou, dále jsou uvedeny typy rušivých signálů, jejich vazební mechanismy a také přepěťové ...
Kubiš, Vít
core
A New Method to Overvoltage Restrain of ElectricLocomotive Passing the Neutral Section
机车电传动, 2013 Overvoltage problem caused by electric locomotive passing the neutral section, always result in traction substation trip or the arc eroding the contact line.
LI Zong-lei +3 more
doaj
International Journal of Electrical Power & Energy SystemsThe hybrid cascaded HVDC system(HC-HVDC) in sending end system is composed of an Line Commutated Converter(LCC) connected in series with a parallel group of Modular Multilevel Converters (MMC).
Jiangshan Liu +5 more
doaj +1 more source
High Voltage, EarlyView.ABSTRACT This paper investigates the generation mechanism of quasi‐power‐frequency resonant overvoltage triggered by multiple lightning strikes in high‐voltage alternating current (HVAC) systems equipped with shunt reactors. Based on field measurements from a 500 kV AC system, equivalent and simplified circuit models have been established to analyse ...
Tao Liang +7 more
wiley +1 more source
High Voltage, EarlyView.ABSTRACT The double‐break vacuum circuit breakers (VCBs) that utilize series break technology effectively increase the switching capability for capacitive currents, elevate the withstand voltage level, and reduce the likelihood of restrike, all without compromising the breaking capacity for short‐circuit currents.
Yun Geng +6 more
wiley +1 more source
Overvoltage protection for range extended electric vehicles
, 2015 This paper deals with a protection circuit against an overvoltage caused by a sudden battery removal from the dc link terminals. The system can be protected against this overvoltage by opening the neutral point of the generator and by engaging a ...
Van den Bossche, Alex +5 more
core +1 more source
High Voltage, EarlyView.ABSTRACT The alternate arm converter (AAC) is one of the most efficient multilevel topologies based on voltage source converters (VSCs), which has recently gained attention in various applications, particularly in high voltage direct current (HVDC) systems.
Ehsan Akbari, Milad Samady Shadlu
wiley +1 more source
High Voltage, EarlyView.ABSTRACT To effectively suppress transient overvoltages in HVDC systems, the design and experimental validation of a multi‐module series controllable arrester are presented. The voltage‐limiting performance, series voltage equalisation capability, and robustness under fault conditions in high‐voltage scenarios require further research.
Tai Yang +4 more
wiley +1 more source
Study on the Power‐Frequency Arc Extinction Characteristics of Semi‐Closed Short‐Gap Device
High Voltage, EarlyView.ABSTRACT Multi‐chamber arc‐extinguishing devices have a simple structure and excellent arc‐extinguishing performance; thus, they have attracted considerable attention as lightning protection devices. However, the structural parameters of different models of the aforementioned devices vary, leading to inconsistent protection levels; therefore, the arc ...
Yeqiang Deng +4 more
wiley +1 more source