Results 171 to 180 of about 2,596,360 (213)

Travelling wave directional pilot protection for hybrid LCC-MMC-HVDC transmission line

, 2020
Currently, line commutated converter (LCC) and modular multilevel converter (MMC) based hybrid high voltage direct current (HVDC) is applied in actual power transmission system.
Dong Wang, Mengqian Hou, Gao Mengyou, Qiao Feng   +3 more
semanticscholar   +1 more source

HVAC Transmission System for Offshore Wind Power Plants Including Mid-Cable Reactive Power Compensation: Optimal Design and Comparison to VSC-HVDC Transmission

IEEE Transactions on Power Delivery, 2020
The design distance of offshore wind power plants connected through HVAC transmission systems might be extended due to the introduction of mid-cable reactors for reactive power compensation purposes and the latest developments of AC cables for higher ...
J. Dakic, M. Cheah‐Mane, O. Gomis‐Bellmunt, E. Prieto‐Araujo   +3 more
semanticscholar   +1 more source

Telephone interference criteria for HVDC transmission lines

IEEE Transactions on Power Delivery, 1989
The telephone interference caused by a transmission line is primarily characterized by the equivalent line disturbance current defined as: le=?n (Cn · In)2 where Cn = C-message weighting factor for the n:th harmonic ln = residual line current of n:th harmonic For many HVdc lines, particularly in North America, this current has been required to be < 270
Arne V. Johansson, Ake Ekstrom
openaire   +1 more source

800-kV HVDC transmission systems

2008 IEEE/PES Transmission and Distribution Conference and Exposition, 2008
The panelist will discuss the recent developments responsible for the planning, design and implementation of plusmn 800 kV HVDC transmission systems. The focus of the presentation will be overhead HVDC transmission lines. Following a brief review of the research and testing that has been carried out so far for the electrical design of HVDC lines, the ...
openaire   +1 more source

Three Megawatt HVDC Transmission Simulator

IEEE Transactions on Industry and General Applications, 1967
The construction and operation of back-to-back converters will be described. Each converter consists of six legs of series connected thyristors. The converters are then used in a pump back scheme wherein ac power is rectified and then inverted back into the ac mains.
John S. Hess, Leslie R. Rice
openaire   +1 more source

Control of MMC-HVDC transmission system: a review on internal and external converter control under grid strength

Electrical Engineering, 2023
Farzin Gharaghani, M. Asadi
semanticscholar   +1 more source

HVDC transmission - opportunities and challenges

8th IEE International Conference on AC and DC Power Transmission (ACDC 2006), 2006
HVDC transmission has a number of technical advantages compared with HVAC transmission, which have been highlighted in many papers. However, HVDC transmission has remained a niche technology, being used only for long distance overhead transmission, submarine cable and frequency conversion.
openaire   +1 more source

Fuzzy logic control for HVDC transmission

IEEE Transactions on Power Delivery, 1997
The conventional proportional-integral type control system loops for the current and extinction angle controllers in HVDC power converters are replaced with fuzzy logic based controls. The two approaches are compared using simulations on an electromagnetic transients simulation program.
A. Daneshpooy, A.M. Gole, D.G. Chapman, J.B. Davies   +3 more
openaire   +1 more source

Electromagnetic simulation of HVDC transmission

2020
Electromagnetic simulation is an effective approach to study the dynamic behaviors of high-voltage direct current (HVDC) transmission system. Transient characteristics of HVDC transmission system can be described with a set of differential equations, which are time varying and nonlinear. To include the distributed parameter effects of HVDC transmission
openaire   +1 more source

Digital dynamic simulation of HVDC transmission systems

Proceedings of MELECON '94. Mediterranean Electrotechnical Conference, 2002
The planning, design and operation of HVDC transmission systems requires the detailed study of various options and prediction of the system performance. HVDC transmission systems described by nonlinear models are not tractable for analytical approaches. Here, the tableau approach is the method that is used for the analysis of HVDC transmission systems.
DİNÇER, HASAN, Gurunlu, C.
openaire   +3 more sources