Results 21 to 30 of about 3,398 (227)

Progressive fault isolation and grid restoration strategy for MTDC networks [PDF]

, 2018
A multi-terminal dc (MTDC) grid has a number of advantages over traditional ac transmission. However, dc protection is still one of the main technical issues holding back the expansion of point-to-point dc links to MTDC networks.
Adamczyk, Andrzej, Barker, Carl, Dantas, Rui, Liang, Jun, Ugalde Loo, Carlos Ernesto, Whitehouse, Robert   +5 more
core   +1 more source

Anomalous Sodium Insertion in Highly Oriented Graphite: Thermodynamics, Kinetics and Evidence for Two‐Sided Intercalation

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, Chuanlian Xiao, Hongguang Wang, Peter A. van Aken, Rotraut Merkle, Sebastian Bette, Bettina V. Lotsch, Joachim Maier   +7 more
wiley   +2 more sources

Research on switching overvoltage suppression of 35 kV shunt reactor

Journal of Physics: Conference Series, 2020
Abstract In recent years, a number of equipment abnormal events caused by operating overvoltage have occurred during the interruption of 35 kV shunt reactors, which jeopardizes the safe and stable operation of the grid. In order to explore the mechanism of operating overvoltage when 35 kV shunt reactor is cut off and the effect of ...
Bing Yu, Gang Yu, Yiming Zheng, Luyao Zhou, Chen Li   +4 more
openaire   +1 more source

Research on Transient AC Overvoltage Suppression Strategy of Islanded Wind Power Transmission via VSC-HVDC

发电技术, 2022
Voltage source converter based high voltage direct current (VSC-HVDC) has a broad application prospect in the field of islanded renewable energy transmission, due to its advantages such as no commutation failure. When AC fault occurs in the AC power grid
YU Xiao, BU Guangquan, WANG Shanshan
doaj   +1 more source

Overvoltage suppression method for DC microgrid under inter-pole short-circuit fault [PDF]

AIP Advances
Aiming at the problems that the existing methods do not fully consider the influence of fault states and have poor overvoltage suppression effects and irregular voltage waveforms, an overvoltage suppression method for DC microgrids under inter-electrode ...
Xiaobin Cai, Lijun Tang, Jiaquan Yang, Nianrong Zhou   +3 more
doaj   +1 more source

Modelling and control of current full compensation system‐based controllable voltage source

IET Generation, Transmission & Distribution, 2023
Current active suppression technology of arc overvoltage in distribution network has small capacity of controllable voltage source and complex control and cannot flexibly adjust the zero‐sequence voltage of neutral point.
Hongwen Liu, Xiangjun Zeng, Qing yang, Chenchao Chai   +3 more
doaj   +1 more source

Impact of converter interface type on the protection requirements for DC aircraft power systems [PDF]

, 2012
The utilization of converter interfaces has the potential to significantly alter the protection system design requirements in future aircraft platforms.
Burt, Graeme, Fletcher, Steven, Galloway, Stuart, Norman, Patrick   +3 more
core   +1 more source

The phenomenon and suppression strategy of overvoltage caused by PV power reverse flow

Frontiers in Energy Research
In the current distribution network’s energy structure, photovoltaic (PV) occupies a high proportion. However, the access of a high proportion of PV will lead to the phenomenon of reverse power flow in the distribution network, and then the problem of ...
Yumeng Xie, Qiying Li, Lei Yang, Kun Yang, Zhen Wang, Jie Liu, Hongjin Fan   +6 more
doaj   +1 more source

Research on the impact of grid-connected offshore wind farms on transient overvoltage and characteristics of harmonic resonances

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, LUO Huafeng, MEI Bingxiao, LIU Haojun, ZHU Feibai, ZHU Hanshan, CHEN Xiangrong   +6 more
doaj   +1 more source

Analytical models of probability distribution and excess noise factor of Solid State Photomultiplier signals with crosstalk

, 2012
Silicon Photomultipliers (SiPM), also so-called Solid State Photomultipliers (SSPM), are based on Geiger mode avalanche breakdown limited by strong negative feedback.
Afek, Barrett, Buzhan, Consul, Eraerds, Futlik, Mirzoyan, Otte, Ramilli, S. Vinogradov, Vacheret, Vinogradov   +11 more
core   +1 more source