Results 31 to 40 of about 7,321,916 (189)
Zhejiang dianli, 2023 Grid-connected offshore wind farms are likely to cause harmonic resonances in the power system that jeopardize the safe operation of the power grid. To this end， the impact of grid-connected offshore wind farms on the transient overvoltage and harmonic ...
XU Qunwei +6 more
doaj +1 more source
Determination of protection system requirements for DC UAV electrical power networks for enhanced capability and survivability [PDF]
, 2011 A growing number of designs of future Unmanned Aerial Vehicle (UAV) applications utilise dc for the primary power distribution method. Such systems typically employ large numbers of power electronic converters as interfaces for novel loads and generators.
Burt, Graeme +3 more
core +4 more sources
The Journal of Engineering, 2019 In the hierarchically connected ultra-high voltage (UHV) DC projects, the minimum air clearance on the 1000 kV AC side of converter transformer directly affects the layout and area of the valve hall.
Lou Ying +3 more
doaj +1 more source
Dynamic frequency control with increasing wind generation [PDF]
, 2004 Paper presented at the 2004 IEEE Power Engineering Society General Meeting, 6-10 June 2004, Denver, ColoradoFrequency control is essential for the secure and stable operation of a power system.
Rourke, Shane +9 more
core +1 more source
Overvoltage Protection for High Frequency High Voltage Power Transformers
Eletrônica de Potência, 2019 Transformers with high-voltage operation may have undesired behavior due to the effects of their parasitic elements. In power electronics applications, if the primary voltage has harmonics, transformer resonances may be excited, causing high primary ...
Diego Teruo Mendes de Souza +2 more
doaj +1 more source
Substation reliability evaluation in the context of the stability prediction of power grids [PDF]
Bulletin of the Polish Academy of Sciences: Technical Sciences, 2020 The aim of the presented work was to examine the reliability assessment model on the example of a selected power grid object. The analyzed object was tested based on assumptions about technological breaks that were caused by overvoltage, among others ...
M. Borecki +3 more
doaj +1 more source
, 2019 As one part of the power system, high-temperature superconducting (HTS) cables may be subject to various system faults, such as overvoltage. When overvoltage occurs, HTS cables may quench and the resistance of HTS tapes will increase rapidly, which will ...
Jianwei Li +3 more
core +1 more source
High Voltage, 2022 The large leakage current of the roof arrester caused by the high‐frequency resonant overvoltage on the high‐speed train occurs intermittently, which will cause the arrester to overheat locally.
Jixing Sun +7 more
doaj +1 more source
POWER FREQUENCY OVERVOLTAGES GENERATED BY SOLAR PLANT INVERTERS
RE&PQJA new kind of overvoltage, not covered by present standards, has been detected in solar plants when switching the inverters off. This power frequency overvoltage can be transmitted to the MV network, giving rise to damages to some pieces of low voltage electronic equipment.
null F.J. Pazos +5 more
openaire +1 more source
Research on influencing factors of arc grounding over-voltage in mine power supply system
Gong-kuang zidonghua, 2017 In order to comprehensively study influence factors such as grounding resistance, line resistance, fault location, grounding capacitance, interphase capacitance and arc ignition time on arc grounding over-voltage in mine power supply system, typical mine
LIU Jucai +6 more
doaj +1 more source