Results 61 to 70 of about 3,794 (179)

Study and protection of lightning overvoltage on DC cables of solar power generation

, 2014
In this paper, lightning induced overvoltage on DC cables of solar power panel, which was laid on the ground and an underground level with proper insulation thickness, was investigated when a lightning strike at a nearby place and its proper protection ...
Ahmed, Md Raju, Md. Raju Ahmed, Hossain, Md Alamgir, Md. Alamgir Hossain   +3 more
core   +1 more source

The Lightning Protection Assessment of Distribution Lines with Considering Frequency Grounding System [PDF]

Iranian Journal of Electrical and Electronic Engineering
Ensuring the protection of all components within power systems from lightning-induced overvoltage is crucial. The issue of power interruptions caused by both direct and indirect lightning strikes (LS) presents significant challenges in the electrical ...
Aida Gholami, Masume Khodsuz, Valiollah Mashayekhi   +2 more
doaj  

Design of Hybrid Control Algorithm for Fault Ride-Through of Photovoltaic System

IEEE Access, 2019
This paper proposes a novel control algorithm to enhance the fault ride-through (FRT) capability of a photovoltaic (PV) system. In this method, the overcurrent of the grid-tied inverter is suppressed to a preset value using model current predictive ...
Feng Zheng, Yiqiang Chen, Tao Ye, Yachao Zhang, Fang Guo, Yi Zhang   +5 more
doaj   +1 more source

The Impact of Various Contact Structures on the Microscopic Surface Condition of Vacuum Interrupters During Capacitive Switching

High Voltage, EarlyView.
ABSTRACT The double‐break vacuum circuit breakers (VCBs) that utilize series break technology effectively increase the switching capability for capacitive currents, elevate the withstand voltage level, and reduce the likelihood of restrike, all without compromising the breaking capacity for short‐circuit currents.
Yun Geng, Xiaofei Yao, Pu Chen, Rong Jia, Hannan Shan, Yingsan Geng, Zhiyuan Liu   +6 more
wiley   +1 more source

Design of Zero Overvoltage Switching tailored power electronics

25102517Zero Overvoltage Switching (ZOS) can be used for clean switching transitions without overvoltage oscillations and unlimited switching speed, leading to the elimination of switching losses.
März, Martin, Matlok, Stefan, Schmied, Nico   +2 more
core   +1 more source

Theoretical Analysis on High Frequency Ferroresonant Overvoltage

, 2012
The high frequency ferroresonant occurs when a nonlinear inductor is fed from a series capacitor in the neutral insulated system and the neutral solidly grounded system.
Bo, Z.Q., Cao, D.L., Chen, X.F., Jin, E.S.   +3 more
core   +1 more source

Analysis on the fault characteristics of three-phase short-circuit for half-wavelength AC transmission lines

Global Energy Interconnection, 2018
Half-wavelength AC transmission (HWACT) is an ultra-long distance AC transmission technology, whose electrical distance is close to half-wavelength at the system power frequency. It is very important for the construction and operation of HWACT to analyze
Xuankun Song, Teng Feng, Liu Han, Travis M. Smith, Xinzhou Dong, Wenxuan Liu, Rui Zhang   +6 more
doaj   +1 more source

Comprehensive Design and Experimental Validation of 30 kV Ultra‐Fast Flexible Controllable Arresters for HVDC Systems

High Voltage, EarlyView.
ABSTRACT To effectively suppress transient overvoltages in HVDC systems, the design and experimental validation of a multi‐module series controllable arrester are presented. The voltage‐limiting performance, series voltage equalisation capability, and robustness under fault conditions in high‐voltage scenarios require further research.
Tai Yang, Xiangyu Zhang, Sihang Wu, Lei Qi, Xiang Cui   +4 more
wiley   +1 more source

Overvoltage Elimination via Distributed Backstepping-Controlled Converters in Near-Zero-Energy Buildings Under Excess Solar Power to Improve Distribution Network Reliability

Energies
This work uses battery-coupled power electronic converter systems and distributed backstepping controllers to improve the reliability of electrical distribution networks.
J. Dionísio Barros, Luis Rocha, A. Moisés, J. Fernando Silva   +3 more
doaj   +1 more source

Load Rejection Overvoltage Suppression and Parameter Design Method of UHV AC Transmission Line

UHV (ultra-high voltage) by instant AC transmission system is accompanied by huge reactive power transmission. When the load drops sharply, it is easy to produce serious power frequency overvoltage, which is also defined as load rejection overvoltage ...
Wang Ma, Yixing Ding, Rusi Chen, Yingge Wang, Dian Xu, Haiguang Liu, Guanqun Sun   +6 more
core   +1 more source