Results 21 to 30 of about 763 (183)
Energies, 2023 To address the problem of winding turn-to-turn breakdown faults in 35 kV dry-type transformers in wind farms under overvoltage conditions, this paper establishes a simulation model based on the structural dimensions and material parameters of the ...
Ziheng Pu +4 more
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Analysis of influence of energy storage system parameters on HVDC commutation failure overvoltage [PDF]
E3S Web of Conferences, 2023 Overvoltage is a common fault in high voltage direct current (HVDC) transmission systems, which directly affects the safe and stable operation of the system.
Ge Pengjiang +5 more
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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
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Analysis and Estimation Method for the Impact of Different Renewable Energy Ratios on Transient Overvoltage under DC Faults [PDF]
Dianli jianshe[Objective] To address the ambiguous trends in transient overvoltage caused by unclear definitions of renewable energy ratios， this paper investigates how fluctuations in renewable generation and random unit commitment lead to varying impacts under ...
LIANG Chenguang, SHEN Xiaolin, YIN Chunya, LIU Wan, LI Xiaozhu, GAO Shang
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Research on over-voltage characteristics of ultra high-voltage direct current transmission system
Energy Reports, 2022 Load dumping overvoltage has a significant effect on insulation coordination of direct current (DC) transmission system. Based on the PSCAD/EMTDC electromagnetic transient simulation programs, this paper has built the electromagnetic transient ...
Yingjin Li +6 more
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Energies, 2017 In recent years, with the rapid development of offshore wind turbines (WTs), the problem of lightning strikes has become more and more prominent. In order to reduce the failure rate caused by the transient overvoltage of lightning struck offshore WTs ...
Li Zhang +4 more
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Angewandte Chemie, EarlyView.Sketch for chemical Na bilayer (a) aggregation to higher aggregates (b), resulting in loss of space charge zones. The electrons compensating for the Na+ are partly in the space charge layers and partly in‐between the Na‐layers. ABSTRACT The difficult intercalation of sodium (Na) into graphite is studied by systematic and long‐time investigations (of up
Chuanhai Gan +7 more
wiley +2 more sources
Considering the Switching Strategy of the Transmitting Wind Power to Deal with the DC Blocking Fault Under the Constraint of Transient Overvoltage [PDF]
Dianli jianshe[Objective] For the power grid with high penetration of new energy，measures such as rapid shut-off or emergency reduction of the power of new energy stations are often used to deal with DC lockout faults，but the cutting will weaken the strength of the ...
MA Qiang, YIN Chunya, QIN Yanhui, MA Xing, TANG Zhipeng
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Energy Reports, 2023 In order to suppress the sending end transient overvoltage caused by HVDC commutation failure considering large wind power integration, this paper proposes a coordinated optimization method for the control parameters of DC and wind power, which can ...
Yang Li +3 more
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Modeling and Analysis of Transient Overvoltage of Direct Drive Wind Turbine Under Symmetrical Faults
Zhongguo dianliLarge-scale wind power bases typically adopt UHVAC/UHVDC transmission systems for power export, with weak grid strength in the collection area. After short-circuit faults, transient overvoltage issues are prone to occur, making it urgent to study the ...
Hongbo LUO +3 more
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