Results 21 to 30 of about 3,691 (249)
Mechanism and suppression of breaking overvoltage of DC circuit breakers
High VoltageThe occurrence of breaking overvoltage in a DC circuit breaker (DCCB) poses a potential threat to the safe operation of a DC grid. Based on the structure of the ±10 kV three‐terminal DC distribution network, this paper sets up the medium‐voltage DCCB and
Lu Qu +7 more
doaj +2 more sources
Research on fast transient overvoltage suppression measures in 750kV GIS
Journal of Physics: Conference SeriesAbstract The isolation switch in gas-insulated switchgear (GIS) will generate rapid transient overvoltage VFTO during opening and closing, which will cause great harm to the GIS itself and adjacent equipment. In order to solve the problem of rapid transient overvoltage in GIS, the electromagnetic transient program (ATP-EMTP) was used to ...
Longyun Jiang
openaire +2 more sources
Overvoltage and Oscillation Suppression Circuit With Switching Losses Optimization and Clamping Energy Feedback for SiC MOSFET [PDF]
IEEE Transactions on Power Electronics, 2021 Chengzi Yang +5 more
openalex +3 more sources
Insulator fault feature extraction system of substation equipment based on machine vision
IET Networks, EarlyView., 2022 Abstract The artificial intelligence technology and intelligent automation are more and more widely used, the insulators play a supporting and insulating role in the operation of the grid. The use of machine vision inspection technology to detect insulator faults has become an inevitable trend of the times.
Keruo Jiang +4 more
wiley +1 more source
IEEE Access, 2021 During the switching operation of the non-load power transmission lines, the undisired switching overvoltage issue is inevitable, causing grid voltage oscillations, waveform distortion and other phenomena at the end of the non-load power transmission ...
Bo Yang +4 more
doaj +1 more source
Energy Reports, 2022 In grounding fault of DC system, overvoltage will appear on equipment nodes in converter station. Due to different operation mode and equipment type, it is very different from overvoltage in AC system.
Zongyang Zhang +5 more
doaj +1 more source
Energies, 2023 The high amplitude and steep overvoltage generated by the breaking of the vacuum circuit breaker in the wind farm damages the inter-turn insulation of the transformer.
Ziheng Pu +4 more
doaj +1 more source
电力工程技术, 2023 Aiming at the transient overvoltage problem of high proportion new energy multi direct current (DC) transmission system caused by DC blocking fault, the interaction mechanism between multiple DC lines is analyzed firstly and the multi-outfeed voltage ...
ZHANG Qirui +5 more
doaj +1 more source
Machines, 2023 With the development of the photovoltaic industry; there will be an increasing demand for efficient, high-power density, and low-cost grid interface converters.
Jian Yu +4 more
doaj +1 more source
Novel method for restraining 35 kV shunt reactor switching overvoltage – phase controlled breaker
The Journal of Engineering, 2019 Phenomena such as current chopping, arc reignition and equivalent current chopping might appear when cutting off shunt reactor. Overvoltage caused by switching will lead to interphase fault in related equipment and inter-turn insulation damage in the ...
Yiming Zheng +5 more
doaj +1 more source