Results 191 to 200 of about 311,111 (242)

HVDC Cable Systems—Highlighting Extruded Technology

IEEE Transactions on Power Delivery, 2014
HVDC cable systems are growing in number. This is a result of globally defined targets leading to an increase of investments in renewables. The HVDC cable systems enable us to integrate these new energy sources in a manner that reduces losses and stabilizes operations. In this paper, the focus is on extruded HVDC cables.
Hossein Ghorbani, Marc Jeroense, Carl-Olof Olsson, Markus Saltzer   +3 more
openaire   +1 more source

Insulation materials for HVDC polymeric cables

IEEE Transactions on Dielectrics and Electrical Insulation, 2017
Polymeric insulation materials have been very successfully used in the extruded high voltage alternating current (HVAC) cables underground power transmission for a long time. Although the development history of extruded polymeric HVDC cables is not very long, it has shown great advantages in power transmission over HVAC cables and other kinds of HVDC ...
Jinliang He, George Chen
openaire   +1 more source

Electric Stresses in a HVDC Cable Through Joint

IEEE Power Engineering Review, 1984
Longitudinal and radial stresses in a hvdc cable through joint are computed using a finite difference method. The joint and associated cable are rated at 266 kV d. c., 1200A and assumed buried to a depth of l.lm in homogeneous soil of thermal resistivity 1.2 deg C-m W-1.
D. Chu, B. M. Weedy, A. E. Davies
openaire   +1 more source

Effect of modified ZnO on electrical properties of PP/SEBS nanocomposites for HVDC cables

IEEE transactions on dielectrics and electrical insulation, 2018
Polypropylene (PP) has the potential to be used as insulation for high voltage direct current cables due to its high melting point, excellent recyclability and electrical insulation properties.
J. Zha, Junfeng Wang, Si-Jiao Wang, Qingqing Qin, Z. Dang   +4 more
semanticscholar   +1 more source

HVDC Extruded Cables-Parameters for Determination of Stress

IEEE Power Engineering Review, 1984
The distribution of electric stress in the insulation of a h.v.d.c. cable is determined by the resistivity of the insulation, which is dependent both on temperature and stress. In the present work an attempt is made to quantify for polymeric insulation the parameters of an equation for resistivity of the form used for paper/oil, i.e. ?= ??exp-(??+ sE).
D. Chu, B. M. Weedy
openaire   +1 more source

Space charges and life models for lifetime inference of HVDC cables under voltage polarity reversal

2019 AEIT HVDC International Conference (AEIT HVDC), 2019
HVDC cables connected to Current Source Converters are subjected to polarity reversal when the HVDC intertie changes the power flow. Mass Impregnated Non-Draining cables had been using since the dawn of HVDC transmission with Current Source Converters ...
M. Marzinotto, A. Battaglia, G. Mazzanti
semanticscholar   +1 more source

HVDC Cable Accessory Insulation

2017
HVDC cables have shown great advantages for long-distance, high-power underground or underwater transmission. The performance of cable accessories, as an essential part of the HVDC networks, is a great concern to the reliability of the system. However, Cable accessories made of ethylene-propylene-diene terpolymer (EPDM), which are considered to be the ...
openaire   +1 more source

A Deeper Insight in Predicting the Effect of Voltage Polarity Reversal on HVDC Cables

Conference on Electrical Insulation and Dielectric Phenomena, 2019
The reversal of voltage polarity is essential in HVDC cable systems with Current Source Converters (CSC), since it enables to revert the direction of the power flow.
A. Battaglia, M. Marzinotto, G. Mazzanti
semanticscholar   +1 more source

Discharging Characteristics of a HVDC Test-Cable

2019 14th Conference on Industrial and Information Systems (ICIIS), 2019
In HVDC power transmission, power cables are taking the place of overhead lines at a rapid rate. While testing HVDC power cables, manufacturers often encounter difficulty of handling, as a prior knowledge of the time at which the power cable would discharge completely is not known. This paper explores the discharging time of cables of different lengths
Aritra Das, C.C. Reddy
openaire   +1 more source

Effect of multi-dimensional zinc oxide on electrical properties of polypropylene nanocomposites for HVDC cables

IEEE transactions on dielectrics and electrical insulation, 2019
Polypropylene (PP) is one of the most important high voltage direct current (HVDC) cable insulation materials, which has been widely used in recent years.
J. Zha, Qingqing Qin, Z. Dang
semanticscholar   +1 more source