Results 81 to 90 of about 916,905 (189)

Resonant Overvoltages in Offshore Wind Farms Analysis, modeling and measurement

, 2017
In this thesis, the resonant overvoltages at the terminal and inside wind turbine transformers are studied. The motivation of this study is the requirement for improved transformers for wind farms, especially Offshore Wind Farms (OWF). Compared to conventional medium voltage transformers, these transformers should operate in more onerous conditions ...
openaire   +2 more sources

Experimental Research of the Overvoltage in the Insulated Neutral Network

The isolated neutral network isolation resistance is often affected by the lightning discharge surge to the line cables or towers. Several overvoltage waves are maid at the moment of the lightning discharge surge.
Gvozdas, Vitalijus, Valatka, Povilas
core  

Study of series resonance overvoltage at LV side of transmission transformer during EHV cable energization

, 2017
A series resonance between the leakage transformer inductance and HV cable capacitance can be excited by a voltage disturbance at the EHV side of the transformer. In this paper, the series resonance phenomenon is initially studied using lumped parameters
Barakou, F., Pitsaris, A., Wouters, P.A.A.F.; id_orcid, Wouters, P.A.A.F., Steennis, E.F.   +4 more
core   +1 more source

Research on the Coordination of Surge Protectors in Communication Power Systems

Energies
To address the issue of coordination failure in multi-stage surge protective devices (SPDs) under lightning surges in communication power systems, this study employs traveling wave propagation theory and electromagnetic transient simulations using the ...
Kang Yang, Hongyan Xing, Zhoulong Wang, Linlong Shi   +3 more
doaj   +1 more source

Evaluation of the efficacy of transient overvoltages suppression measures in different wind farm topologies using SF6 circuit breaker. [PDF]

Sci Rep, 2023
Eliyan T, Wadie F.
europepmc   +1 more source

Multi-module series suppressor for the protection of wind farm transformers against resonance overvoltages

International Journal of Electrical Power & Energy Systems
Large-scale integration of renewable energy sources (RESs) presents significant challenges for modern power grids, particularly with wind farms playing a crucial role in energy generation. However, frequent switching operations during the (dis)connection
Amir Heidary, Mohamad Ghaffarian Niasar, Marjan Popov   +2 more
doaj   +1 more source

A New Optical Fiber Voltage Transformer with Capacitor Used on Electric Locomotives

机车电传动, 2014
For the issue that resonance of traditional voltage transformer used on electric locomotives causeed overvoltage while locomotive passing neutral section, a neu design was presented with resistive-capacitive voltage measurement method replacing existing ...
YU Dan, SUN Wen, XU Yan, MA Tan
doaj  

Research on the Influence of Ferromagnetic Resonance on the Temperature Rise Characteristics and Insulation Performance of Electromagnetic Voltage Transformers

IEEE Access
Electromagnetic potential transformers (PTs) in ungrounded distribution networks are prone to ferromagnetic resonance, causing overvoltage and overheating, which lead to insulation degradation and equipment failure.
Bai Lu, Yang Dongdong, Zhang Yu, Huang Shuqi, Pei Chu, Wang Wei, Chen Yutong   +6 more
doaj   +1 more source

Research on No-load Overvoltage and Commutation Overvoltage of Three-phase Full-wave Rectifier

, 2011
The function relationship is achieved among no-load voltage of three-phase diode full-wave rectifier, absorbing capacitance of bridge diode and no-load resistance by simulation.
何多昌, 蒋家久, 唐亚军, 陈志博   +3 more
core   +1 more source

Tailoring the Preformed Solid Electrolyte Interphase in Lithium Metal Batteries: Impact of Fluoroethylene Carbonate. [PDF]

ACS Appl Mater Interfaces, 2023
Weintz D, Kühn SP, Winter M, Cekic-Laskovic I.   +3 more
europepmc   +1 more source