Diagnosing insulation intrinsic ageing is essential for preventing failure of submarine cables, and in case failure, helping any decision about maintenance actions. In this study, a novel aged cable diagnosis approach based on high-voltage frequency domain spectroscopy (HV-FDS) with broader width proposed to analyse the high-field polarisation characteristics conductivity behaviour 500 kV polym...

In this paper, by studying the change rule of zero sequence voltage when single-phase leakage occurs, detection method insulation decline mine cables is studied, especially additional low-frequency signal sampling technology power cables. Combined with conventional protection technology, online monitoring equipment and supporting software for parameters are developed to realize each branch cabl...

This paper presents the development of resistance heating furnace based on direct electrical conduction method that can perform with lower energy. Based concept welding, was developed for heat treatment 22MnB5 Boron steel aim to change microstructure from pearlite austenite phases before quenched into martensite phase. The main component this machine consisted transformer, copper electrodes, ca...

There is rising interest in medium-voltage direct current (MVDC) power systems for several reasons, including compatibility with DC loads and avoidance of alternating (AC) frequency synchronization issues when combining multiple source outputs [1]. However, few MVDC are currently operation, there relatively little experience compared to the knowledge available (MVAC) systems. Presently, IEEE St...

The insulation condition of cables has been the focus research in power systems. To address problem that electric field is not easily measured under operating 10 kV transmission with defects, this paper proposes a data-driven cable defect model based on convolutional neural network approach. data during operation obtained by finite element calculation, and multi-dimensional input feature quanti...

Abstract In this paper, studies concerning the changes brought by gamma radiation on some PVC plates were made. The respective samples exposed to irradiation, at room temperature and different doses, such as (10, 20, 40, 80) kGy. in irradiated plates’ properties studied UV-Vis, electrical measurements, SEM analysis non-irradiated samples. results show that irradiation affects of plates. This de...