Results 51 to 60 of about 122,975 (192)

HVDC-Transmission Line Model for Transient Simulation Purposes

open access: yesIFAC Proceedings Volumes, 1992
Abstract A lumped bipolair HVDC-transmission line model, based on least squares fitting of orthogonal polynomials, which are space dependent, and have time dependent coefficients, is presented and examined in this paper. The model enables the line voltage and current to be approximately determined for arbitrary points along the line and at arbitrary ...
R. Navarro-Adlemo, C. Breitholtz
openaire   +1 more source

Ann based Shortcoming Area in HVDC Transmission Line

open access: yesInternational Journal of Innovative Technology and Exploring Engineering, 2019
This paper is to ponder the use of Neural systems for shortcoming discovery and area in HVDC framework. The proposed Neural system learns examples and relationship on transient information. The Back-propagation algorithm has the ability to match map complex and nonlinear input - output behavior.
C. Poongothai, K. Gayathri
openaire   +1 more source

Influence of Ion Flow Field on the Design of Hybrid HVAC and HVDC Transmission Lines with Different Configurations

open access: yesEnergies
Due to the coupling of DC and AC components, the ion flow field of HVDC and HVAC transmission lines in the same corridor or even the same tower is complex and time-dependent.
Jinyuan Xing   +4 more
doaj   +1 more source

Fast Corona Discharge Assessment Using FDM integrated With Full Multigrid Method in HVDC Transmission Lines Considering Wind Impact

open access: yesIEEE Access, 2020
A novel approach for solving the monopolar corona in high voltage direct current (HVDC) transmission line systems is proposed by the finite difference method (FDM) and a full multigrid method (FMG).
M. Abouelatta   +5 more
semanticscholar   +1 more source

A Study for the Measurement of the Minimum Clearance Distance between the 500 kV DC Transmission Line and Vegetation

open access: yesEnergies, 2018
High voltage direct current (HVDC) transmission is being widely implemented for long-distance electrical power transmission due to its specific benefits over high voltage alternating current (HVAC) transmission.
Kumail Hassan Kharal   +6 more
doaj   +1 more source

Influence factors and reasonable arrangement of corridor width of ±800 kV HVDC and 750 kV HVAC hybrid transmission lines

open access: yesThe Journal of Engineering, 2019
With the development of economy and the increased demand of power energy, it is unavoidable that high-voltage direct current (HVDC) and high-voltage alternating current (HVAC) transmission lines are in the same corridor.
Qian Zhang   +3 more
doaj   +1 more source

Single‐end protection algorithm for HVDC transmission lines based on the current difference

open access: yes, 2020
This study presents a single-end protection algorithm for current source converter (CSC) high-voltage direct current (HVDC) transmission lines to solve shortcomings such as inadequate sensitivity, low speed and the need for communication link of ...
Mohammad Mehrabi‐Kooshki   +2 more
semanticscholar   +1 more source

Development of a Wireless Sensor Network for Distributed Measurement of Total Electric Field under HVDC Transmission Lines

open access: yesInternational Journal of Distributed Sensor Networks, 2014
A wireless sensor network-based distributed measurement system is designed for collecting and monitoring the electric field under the high voltage direct current (HVDC) transmission lines.
Yong Cui   +5 more
doaj   +1 more source

Numerical Analysis of Ion Flow in One-Bipole HVDC Transmission Line Using Revised Charge Injection Methods

open access: yesIEEE Access
In the evolving field of electric power transmission networks, high-voltage direct current (HVDC) transmission has garnered attention for its efficacy in long-distance power delivery.
Minhee Kim, Se-Hee Lee
doaj   +1 more source

Minimum Frequency and Voltage Stability Constrained Unit Commitment for AC/DC Transmission Systems

open access: yesApplied Sciences, 2019
An increased use of the high-voltage direct current (HVDC) technologies can have important effects on frequency performance and voltage stability of the receiving-end grid during normal operation as well as during blocking failure.
Ningyu Zhang, Qian Zhou, Haoming Hu
doaj   +1 more source

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