Results 51 to 60 of about 1,696 (209)
High Voltage, 2022 The multiple reignitions of vacuum circuit braker (VCB) while switching off the shunt reactor in an offshore wind farm (OWF) would produce a high overvoltage. The post‐arc process of ion movement in the vacuum interrupter is analysed.
Zhi Zheng +5 more
doaj +1 more source
Zhongguo dianli, 2021 DC blocking can cause transient overvoltage in the wind-thermal-storage system with multi-channel delivery. Firstly, the paper analyzes the impact of the surplus reactive power and the strength of the sending-end system on the transient overvoltage of ...
Jixian ZHAO, Fengting LI, Chunya YIN
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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
电力工程技术Aiming at the transient overvoltage problem in the new energy high-penetration area of the feeder due to DC bipolar blocking fault, a converter bus reactive power allocation capacity optimization scheme is proposed with the constraint that the transient ...
Xinyue LI +4 more
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Review of overhead line defect inspection based on deep learning and UAV images
电力工程技术Line commutated converter based high voltage direct current (LCC-HVDC) is the key to large-scale grid connection and long-distance transmission of renewable energy. However, faults such as DC blocking and commutation failure may lead to short-term excess
ZHOU Wenqing, LIU Gang
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Study on characteristics of slow-front overvoltage of ±1100 kV UHVDC transmission lines
The Journal of Engineering, 2018 The ±1100 kV Zhundong–Wannan ultra high-voltage direct current (UHVDC) transmission project is under construction in China, which has the highest operating voltage in the world.
Jiqun Zhong +5 more
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Zhongguo dianli, 2022 The transient overvoltage at the sending terminal of the offshore wind power collection and transmission system with AC cables threatens the safe and stable operation of the system.
Yanxia SUN, Shiwen FANG, Zhen LI
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Overvoltages and Transients Identification In On-line Bushing Monitoring
Journal of Energy : Energija, 2020 Overvoltages and transients are sometimes recognized as the cause of bushings’ rapid failure. This fact is confirmed by the studies published at the 2018 CIGRE session. They can also initiate dangerous resonance phenomena in transformer windings. The identification of very fast overvoltages characterized by high dynamics of voltage changes, so-called ...
Gil, Wieslaw +2 more
openaire +3 more sources
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
CES Transactions on Electrical Machines and SystemsHigh-voltage direct current (HVDC) transmission is a crucial way to solve the reverse distribution of clean energy and loads. The line commutated converter-based HVDC (LCC-HVDC) has become a vital structure for HVDC due to its high technological maturity
Bo Pang +6 more
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