Results 151 to 160 of about 16,187 (303)
High Voltage, EarlyView.ABSTRACT The breathing system of an oil‐immersed transformer is of vital importance for maintaining equilibrium between internal and external pressures, with any malfunction potentially disrupting the transformer's stable operation. This study develops a thermal–fluid–structure interaction (TFSI) model to simulate the breathing phenomenon in a 110 kV ...
Lujia Wang +5 more
wiley +1 more source
Repairing Power Pole During Power Outage
, 1991 Photographs of individuald repairing power pole from power outage during the Temple rededication. Caption reads, 'Repairing power pole after major power interruption. Repaired with dispatch.
core
High Voltage, EarlyView.ABSTRACT A time domain pulse (TDP) based on the frequency domain reflectometry (FDR) method can be used to diagnose the insulation state of cable defects. However, because of the limitations of the FDR test instrument, the lack of a reflection coefficient spectrum (RCS) in the low‐frequency band (LFB) can result in low frequency oscillation in the time
Jingtao Huang +6 more
wiley +1 more source
Outage probability based power allocation and relay selection algorithm in cooperative communication
Tongxin xuebao, 2013 The relay selection and power optimization of multi-relay cooperative communication network under a joint sum power constraint was considered.A low complexity lay selection and power allocation algorithm was also pro-posed in amplify-and-forward ...
Li-yue SUN, Xiao-hui ZHAO, Ming GUO
doaj
High Voltage, EarlyView.ABSTRACT The harmonic current and vibration of a converter transformer are effective pieces of information for detecting mechanical faults in the winding. In this paper, the ratio of vibration acceleration to the current squared is defined as the vibration frequency response function (VFRF) of the winding, and then, a novel online vibration frequency ...
Shuyu Wu, Fan Zhang, Shengchang Ji
wiley +1 more source
Outage Performance of Underlay Multihop Cognitive Relay Networks with Energy Harvesting
, 2016 This letter studies the outage performance of multihop cognitive relay networks with energy harvesting in underlay paradigms, wherein the secondary users are powered by a dedicated power beacon (PB) and their transmit powers are subject to the harvested ...
Liang YC(梁应敞) +4 more
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High Voltage, EarlyView.ABSTRACT Infrared and visible image registration is a key task in automated distribution network inspection. Previous approaches typically apply a single homography to align infrared and visible images leading to local misalignment. To address this, this study proposes a novel region‐based registration algorithm specifically designed for wide‐depth ...
Yingchen Zhang, Bo Wang, Fei Tang
wiley +1 more source
Influence of Arc Faults on Pressure Production Characteristics in AC Turret of UHV Transformers
High Voltage, EarlyView.ABSTRACT The overpressure caused by arc fault in the oil tank can lead to a transformer explosion. Since the AC turret of transformers serves to connect the transformer windings with the AC busbar, the arc current can be extremely high if an earth fault arc occurs leading to potentially hazardous pressure.
Yuhang Li +4 more
wiley +1 more source