Results 1 to 10 of about 401 (153)
Research on Resonance Overvoltage of EHV Transmission Lines Caused by Lightning Strike [PDF]
IEEE Access, 2021 This paper studies the mechanism and influencing factors of resonance overvoltage of EHV transmission lines caused by lightning. By analyzing the time domain steady state of the simplified resonance circuit, the physical mechanism of resonance is ...
Xiao Lei +5 more
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Detection of Harmonic Overvoltage and Resonance in AC Railways Using Measured Pantograph Electrical Quantities [PDF]
Energies, 2021 Harmonic resonances are part of the power quality (PQ) problems of electrified railways and have serious consequences for the continuity of service and integrity of components in terms of overvoltage stress.
Andrea Mariscotti, Leonardo Sandrolini
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Transformation of Transient Overvoltages by Inductive Voltage Transformers [PDF]
Sensors, 2021 Overvoltage transients occur after any type of switching activity in a power network, such as breaker operation, fault occurrence/clearance and rapid load change. This distortion of voltage is transformed to the secondary circuit of a voltage transformer.
Michał Kaczmarek, Dariusz Brodecki
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Open Physics, 2020 In order to solve the problem that the long cable variable voltage and variable frequency (VVVF) system does not adopt an effective capacitor voltage sharing control method, resulting in a poor effect of resonance overvoltage control, the resonance ...
Deng Yonghong, Zhang Quanzhu
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Energy Reports, 2023 Overvoltage is a critical problem of Thailand’ distribution system. The electrical protection device in the distribution system needs to be able to support this level of overvoltage.
Chaiyaporn Lothongkam +2 more
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Ain Shams Engineering Journal, 2019 When a large power transformer is energized, a high magnitude inrush current may result in harmonic resonance overvoltage (HRO), if the system has resonance phenomenon. Such overvoltages may cause large stresses on the system. This paper investigates the
Ahmed Fouad +3 more
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THE RESONANT OVERVOLTAGE IN NON-SINUSOIDAL MODE OF MAIN ELECTRIC NETWORK
Electrical engineering & Electromechanics, 2018 Purpose. The resonant overvoltage arises in main electrical networks as a result of random coincidence of some parameters of circuit and its mode and it may exist for a relatively long time.
V. G. Kuznetsov +4 more
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Известия Томского политехнического университета: Инжиниринг георесурсов, 2019 The relevance of the study: At the present stage of CIS countries network development the problem of increase the operation reliability of transformers, which main part has been already out of date is of the first-priority. The problem is also up to date
Myroslav Sabat +3 more
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Zhejiang dianli, 2023 Aiming at the problem of overvoltage caused by ferromagnetic resonance fault of 220 kV CVT （capacitive voltage transformer） and the problem of false alarm of 3U0 monitoring device， a simulation model is established based on actual parameters， and the ...
LI Bowen +5 more
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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
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