Results 31 to 40 of about 7,891 (205)

A market-based transmission planning for HVDC grid—case study of the North Sea [PDF]

open access: yes, 2015
There is significant interest in building HVDC transmission to carry out transnational power exchange and deliver cheaper electricity from renewable energy sources which are located far from the load centers.
Gibescu, M   +3 more
core   +1 more source

Modular multilevel converter with modified half-bridge submodule and arm filter for dc transmission systems with DC fault blocking capability [PDF]

open access: yes, 2018
Although a modular multilevel converter (MMC) is universally accepted as a suitable converter topology for the high voltage dc transmission systems, its dc fault ride performance requires substantial improvement in order to be used in critical ...
Abdelsalam, Ibrahim A.   +3 more
core   +2 more sources

The adequacy of the present practice in dynamic aggregated modelling of wind farm systems [PDF]

open access: yes, 2016
Large offshore wind farms are usually composed of several hundred individual wind turbines, each turbine having its own complex set of dynamics. The analysis of the dynamic interaction between wind turbine generators (WTG), interconnecting ac cables, and
Dyke, K   +3 more
core   +1 more source

Electric Field and Temperature Simulations of High-Voltage Direct Current Cables Considering the Soil Environment

open access: yesEnergies, 2021
For long distance electric power transport, high-voltage direct current (HVDC) cable systems are a commonly used solution. Space charges accumulate in the HVDC cable insulations due to the applied voltage and the nonlinear electric conductivity of the ...
Christoph Jörgens, Markus Clemens
doaj   +1 more source

Space Charge Accumulation under Effects of Temperature Gradient and Applied Voltage Reversal on Solid Dielectric DC Cable [PDF]

open access: yes, 2009
A well-known fact of the existence and accumulation of space charge within the insulating material poses threat to the reliability in the operation of dc power cables.
Chen, George   +2 more
core   +1 more source

Recyclable Polypropylene-Based Insulation Materials for HVDC Cables: Progress and Perspective

open access: yesCSEE Journal of Power and Energy Systems
Polypropylene (PP)-based recyclable materials have attracted tremendous interest for HVDC cable insulation applications due to their superior electrical properties, e.g., high thermal stability and superior recyclability.
Yao Zhou   +5 more
doaj   +1 more source

Research on Nonlinear EPDM for ±525kV HVDC Cable Accessories

open access: yesMATEC Web of Conferences, 2019
High voltage direct current (HVDC) cable accessories are usually the weak link in the cable system for the electric field distribution is often extremely uneven, and it has a range of adverse effects in design and manufacture.
Li Dong, Zhu Zhien, Yang Liming, Ma Yili
doaj   +1 more source

Feasibility of Space Charge Measurements on HVDC Cable Joints: Study Group—IEEE DEIS Technical Committee “HVDC Cable and Systems:”

open access: yesIEEE Electrical Insulation Magazine, 2022
This is the first time that the feasibility of space charge measurements on full-sized HVDC cable joints has been explicitly considered. In this article we also consider whether the PEA and TSM techniques could be used.
Tzimas A.   +15 more
openaire   +3 more sources

Electric Field Determination in DC Polymeric Power Cable in the Presence of Space Charge [PDF]

open access: yes, 2007
The pulsed electroacoustic (PEA) technique was used to perform space charge measurements in polymeric power cables. However, for a practical dc power cable the electric field is affected by conductivity of the material, which is a function of both ...
Chen, George, Choo, Wilson
core   +1 more source

Breakdown property of ±320 kV HVDC cable system XLPE/EPDM accessories

open access: yes电力工程技术, 2023
In high voltage direct current cable system, the cable joint and termination are the weakness to stand high voltage, thus making their breakdown strength the critical property to the reliability of power transmission system.
LIU Yongbin   +5 more
doaj   +1 more source

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